Edgar Filing: Eaton Vance Tax-Managed Buy-Write Income Fund

Eaton Vance Tax-Managed Buy-Write Income Fund

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act File Number: 811-21676

Eaton Vance Tax-Managed Buy-Write Income Fund

(Exact Name of Registrant as Specified in Charter)

Two International Place, Boston, Massachusetts 02110

(Address of Principal Executive Offices)

Maureen A. Gemma

Two International Place, Boston, Massachusetts 02110

(Name and Address of Agent for Services)

(617) 482-8260

(Registrant’s Telephone Number)

December 31

Date of Fiscal Year End

December 31, 2018

Date of Reporting Period

Item 1. Reports to Stockholders

LOGO

Eaton Vance

Tax-Managed Buy-Write Income Fund (ETB)

Annual Report

December 31, 2018

Important Note. Beginning on January 1, 2021, as permitted by regulations adopted by the Securities and Exchange Commission, paper copies of the Fund’s annual and semi-annual shareholder reports will no longer be sent by mail unless you specifically request paper copies of the reports. Instead, the reports will be made available on the Fund’s website (funds.eatonvance.com/closed-end-fund-and-term-trust-documents.php), and you will be notified by mail each time a report is posted and provided with a website address to access the report.

If you already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. If you hold shares at the Fund’s transfer agent, American Stock Transfer & Trust Company, LLC (“AST”), you may elect to receive shareholder reports and other communications from the Fund electronically by contacting AST. If you own your shares through a financial intermediary (such as a broker-dealer or bank), you must contact your financial intermediary to sign up.

You may elect to receive all future Fund shareholder reports in paper free of charge. If you hold shares at AST, you can inform AST that you wish to continue receiving paper copies of your shareholder reports by calling 1-866-439-6787. If you own these shares through a financial intermediary, you must contact your financial intermediary or follow instructions included with this disclosure, if applicable, to elect to continue to receive paper copies of your shareholder reports. Your election to receive reports in paper will apply to all funds held with AST or to all funds held through your financial intermediary, as applicable.

LOGO

Commodity Futures Trading Commission Registration. Effective December 31, 2012, the Commodity Futures Trading Commission (“CFTC”) adopted certain regulatory changes that subject registered investment companies and advisers to regulation by the CFTC if a fund invests more than a prescribed level of its assets in certain CFTC-regulated instruments (including futures, certain options and swap agreements) or markets itself as providing investment exposure to such instruments. The Fund has claimed an exclusion from the definition of the term “commodity pool operator” under the Commodity Exchange Act. Accordingly, neither the Fund nor the adviser with respect to the operation of the Fund is subject to CFTC regulation. Because of its management of other strategies, the Fund’s adviser is registered with the CFTC as a commodity pool operator and a commodity trading advisor.

Managed Distribution Plan. Pursuant to an exemptive order issued by the Securities and Exchange Commission (Order), the Fund is authorized to distribute long-term capital gains to shareholders more frequently than once per year. Pursuant to the Order, the Fund’s Board of Trustees approved a Managed Distribution Plan (MDP) pursuant to which the Fund makes monthly cash distributions to common shareholders, stated in terms of a fixed amount per common share.

The Fund currently distributes monthly cash distributions equal to $0.1080 per share in accordance with the MDP. You should not draw any conclusions about the Fund’s investment performance from the amount of these distributions or from the terms of the MDP. The MDP will be subject to regular periodic review by the Fund’s Board of Trustees and the Board may amend or terminate the MDP at any time without prior notice to Fund shareholders. However, at this time there are no reasonably foreseeable circumstances that might cause the termination of the MDP.

The Fund may distribute more than its net investment income and net realized capital gains and, therefore, a distribution may include a return of capital. A return of capital distribution does not necessarily reflect the Fund’s investment performance and should not be confused with “yield” or “income.” With each distribution, the Fund will issue a notice to shareholders and a press release containing information about the amount and sources of the distribution and other related information. The amounts and sources of distributions contained in the notice and press release are only estimates and are not provided for tax purposes. The amounts and sources of the Fund’s distributions for tax purposes will be reported to shareholders on Form 1099-DIV for each calendar year.

Fund shares are not insured by the FDIC and are not deposits or other obligations of, or guaranteed by, any depository institution. Shares are subject to investment risks, including possible loss of principal invested.

Annual Report December 31, 2018

Eaton Vance

Tax-Managed Buy-Write Income Fund

Table of Contents


Management’s Discussion of Fund Performance			2

Performance			3

Fund Profile			3

Fund Snapshot			4

Endnotes and Additional Disclosures			5

Financial Statements			6

Report of Independent Registered Public Accounting Firm			19

Federal Tax Information			20

Dividend Reinvestment Plan			21

Management and Organization			23

Important Notices			26

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Management’s Discussion of Fund Performance¹

Economic and Market Conditions

U.S. stock indexes declined during the 12-month period ended December 31, 2018, as a sharp downturn in the final quarter of the year erased earlier gains.

U.S. stocks opened the period on an upswing, as investors reacted favorably to the passage of the Republican tax reform package in December 2017. Sharp cuts in corporate taxes, a key element of the bill, raised corporate-profit expectations. U.S. stocks also got a boost from positive U.S. economic data, including the unemployment rate, which fell to a 17-year low.

In February 2018, however, U.S. stocks pulled back amid fears that rising interest rates might boost the appeal of fixed-income investments. After a brief rebound, equity markets again weakened in the spring of 2018, as investors confronted the prospect of a global trade war due to President Trump’s then-new tariffs. The broad tariffs drew retaliatory actions from impacted countries including China, Canada, and certain countries in the European Union.

U.S. stocks bounced back during the summer months led by technology stocks, which rebounded following an earlier setback from a wave of data-privacy scandals. Markets plunged in the final three months of the period amid global trade war fears and sagging economies in China and Europe. Despite a partial rebound in the final days of the period, the U.S. stock market’s December 2018 plunge was the worst monthly loss since the 2008 financial crisis.

Amid investor worries, however, U.S. economic data remained largely positive during the period, prompting the U.S. Federal Reserve (the Fed) to raise the federal funds rate in December 2018 for the fourth time during the period. Since then, the Fed has indicated that it may reconsider its planned 2019 rate hikes.

For the 12-month period ended December 31, 2018, the blue-chip Dow Jones Industrial Average^®² declined 3.48%, while the broader U.S. equity market represented by the S&P 500^® Index fell 4.38%. The technology-laden NASDAQ Composite Index fell 2.84% during the period. Large-cap U.S. stocks as measured by the S&P 500^® Index generally outperformed their small-cap counterparts as measured by the Russell 2000^® Index during the period. Growth stocks as a group outpaced value stocks in both the large- and small-cap categories, as measured by the Russell Growth and Value Indexes.

Fund Performance

For the 12-month period ended December 31, 2018, Eaton Vance Tax-Managed Buy-Write Income Fund (the Fund) returned

–6.69% at net asset value (NAV), underperforming the –4.38% return of the Fund’s equity benchmark, the S&P 500^® Index (the Index) and the –4.77% return of the Fund’s options benchmark, the Cboe S&P 500 BuyWrite Index^SM.

The Fund’s options overlay strategy detracted from Fund performance versus the Index during the period. The Fund employs an options strategy of writing (selling) stock index call options on a portion of its underlying common stock portfolio. The options strategy is designed to help limit the Fund’s exposure to market volatility and to provide current income. The period was marked by a reset from the extremely low volatility that characterized 2017 to a higher volatility regime in 2018. As measured by the Cboe Volatility Index^®, the average implied volatility roughly doubled from 2017 to 2018. The higher volatility environment caused the premiums received by the Fund for selling options to increase versus 2017 prices. While higher implied and realized market volatility through most of 2018 was positive for performance of the option strategy, a strong equity rally in January 2018 negatively impacted options performance and led the options strategy to experience losses for the period as a whole.

The Fund’s common stock portfolio underperformed the Index, which detracted from relative performance as well. Stock selections in the financials and consumer discretionary sectors detracted from Fund performance versus the Index, as did stock selections and an overweight position, relative to the Index, in the materials sector. The Fund’s overweight position in life insurance and annuity provider Lincoln National Corp. (Lincoln National) declined during the period and hurt relative results in the financials sector. Falling equity markets and an ongoing low-interest rate environment were headwinds for investment portfolios and profitability across the insurance industry. Lincoln National also suffered from slowing growth in its variable annuity business during the period.

In contrast, stock selections in the industrials sector contributed to performance versus the Index. The Fund’s overweight position in Boeing Co. (Boeing), a manufacturer of passenger airliners and aerospace defense equipment, performed strongly as global strength in the airline business caused orders for Boeing aircraft to remain robust. Elsewhere in industrials, underweighting Index component General Electric Co. (GE) and selling it out of the Fund helped relative results. GE’s stock plummeted during the period, weighed down by poor earnings and cash flow, a weak balance sheet, multiple management changes, and a drastic cut in its stock dividend.

See Endnotes and Additional Disclosures in this report.

Past performance is no guarantee of future results. Returns are historical and are calculated by determining the percentage change in net asset value (NAV) or market price (as applicable) with all distributions reinvested and include management fees and other expenses. Fund performance at market price will differ from its results at NAV due to factors such as changing perceptions about the Fund, market conditions, fluctuations in supply and demand for Fund shares, or changes in Fund distributions. Investment return and principal value will fluctuate so that shares, when sold, may be worth more or less than their original cost. Performance less than or equal to one year is cumulative. Performance is for the stated time period only; due to market volatility, current Fund performance may be lower or higher than the quoted return. For performance as of the most recent month-end, please refer to eatonvance.com.


		2

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Performance²

Portfolio Managers Michael A. Allison, CFA and Thomas C. Seto


% Average Annual Total Returns	Inception Date		One Year			Five Years			Ten Years
Fund at NAV		04/29/2005		–6.69	%		5.43	%		10.20	%
Fund at Market Price		—		–12.65			6.38			10.67
S&P 500^® Index		—		–4.38	%		8.49	%		13.11	%
Cboe S&P 500 BuyWrite Index^SM		—		–4.77			5.07			7.95


% Premium/Discount to NAV³
										–4.20	%


Distributions⁴
Total Distributions per share for the period									$	1.296
Distribution Rate at NAV										9.23	%
Distribution Rate at Market Price										9.64	%

Fund Profile

Sector Allocation (% of total investments)⁵

LOGO

Top 10 Holdings (% of total investments)⁵



Microsoft Corp.	4.5	%

Apple, Inc.	4.3

JPMorgan Chase & Co.	2.2

Alphabet, Inc., Class A	2.2

Alphabet, Inc., Class C	2.1

Amazon.com, Inc.	2.1

UnitedHealth Group, Inc.	2.0

Johnson & Johnson	1.8

Home Depot, Inc. (The)	1.6

Walt Disney Co. (The)	1.6

Total	24.4	%

See Endnotes and Additional Disclosures in this report.


		3

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Fund Snapshot



Objective		The primary investment objective is to provide current income and gains, with a secondary objective of capital appreciation.

Strategy		The Fund invests in a diversified portfolio of common stocks and writes call options on one or more U.S. indices on a substantial portion of the value of its common stock portfolio to generate current earnings from the option premium. The Fund evaluates returns on an after tax basis and seeks to minimize and defer federal income taxes incurred by shareholders in connection with their investment in the Fund.


		Options Strategy		Write Index Covered Calls
		Equity Benchmark²		S&P 500^®Index

		Morningstar Category		Option Writing

		Distribution Frequency		Monthly

		Common Stock Portfolio

		Positions Held		169

		% US / Non-US		99.9/0.1

		Average Market Cap		$217.6 Billion

		Call Options Written

		% of Stock Portfolio		88%

		Average Days to Expiration		16 days

		% Out of the Money		5.2%

The following terms as used in the Fund snapshot:

Average Market Cap: An indicator of the size of the companies in which the Fund invests and is the sum of each security’s weight in the portfolio multiplied by its market cap. Market Cap is determined by multiplying the price of a share of a company’s common stock by the number of shares outstanding.

Call Option: For an index call option, the buyer has the right to receive from the seller (or writer) a cash payment at the option expiration date equal to any positive difference between the value of the index at contract expiration and the exercise price. The buyer of a call option makes a cash payment (premium) to the seller (writer) of the option upon entering into the option contract.

Covered Call Strategy: A strategy of owning a portfolio of common stocks and writing call options on all or a portion of such stocks to generate current earnings from option premium.

Out of the Money: For a call option on an index, the extent to which the exercise price of the option exceeds the current price of the value of the index.

See Endnotes and Additional Disclosures in this report.


		4

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Endnotes and Additional Disclosures

The views expressed in this report are those of the portfolio manager(s) and are current only through the date stated at the top of this page. These views are subject to change at any time based upon market or other conditions, and Eaton Vance and the Fund(s) disclaim any responsibility to update such views. These views may not be relied upon as investment advice and, because investment decisions are based on many factors, may not be relied upon as an indication of trading intent on behalf of any Eaton Vance fund. This commentary may contain statements that are not historical facts, referred to as “forward looking statements.” The Fund’s actual future results may differ significantly from those stated in any forward looking statement, depending on factors such as changes in securities or financial markets or general economic conditions, the volume of sales and purchases of Fund shares, the continuation of investment advisory, administrative and service contracts, and other risks discussed from time to time in the Fund’s filings with the Securities and Exchange Commission.

Dow Jones Industrial Average^®is a price-weighted average of 30 blue-chip stocks that are generally the leaders in their industry. S&P 500^® Index is an unmanaged index of large-cap stocks commonly used as a measure of U.S. stock market performance. NASDAQ Composite Index is a market capitalization-weighted index of all domestic and international securities listed on NASDAQ. Source: Nasdaq, Inc. The information is provided by Nasdaq (with its affiliates, are referred to as the “Corporations”) and Nasdaq’s third party licensors on an “as is” basis and the Corporations make no guarantees and bear no liability of any kind with respect to the information or the Fund. Russell 2000^® Index is an unmanaged index of 2,000 U.S. small-cap stocks. Cboe S&P 500 BuyWrite Index^SMmeasures the performance of a hypothetical buy-write strategy on the S&P 500^®Index. Cboe Volatility Index^® tracks the implied volatilities of a wide range of S&P 500^® Index options. Unless otherwise stated, index returns do not reflect the effect of any applicable sales charges, commissions, expenses, taxes or leverage, as applicable. It is not possible to invest directly in an index. Performance since inception for an index, if presented, is the performance since the Fund’s or oldest share class’ inception, as applicable.

³	The shares of the Fund often trade at a discount or premium from their net asset value. The discount or premium of the Fund may vary over time and may be higher or lower than what is quoted in this report. For up-to-date premium/discount information, please refer to http://eatonvance.com/closedend.

⁴

The Distribution Rate is based on the Fund’s last regular distribution per share in the period (annualized) divided by the Fund’s NAV or market price at the end of the period. The Fund’s distributions may be comprised of amounts characterized for federal income tax purposes as qualified and non-qualified ordinary dividends, capital gains and nondividend distributions, also known as return of capital. For additional information about nondividend distributions, please refer to Eaton Vance Closed-End Fund Distribution Notices (19a) posted on our website, eatonvance.com. The Fund will determine the federal income tax character of distributions paid to a shareholder after the end of the calendar year. This is reported on the IRS form 1099-DIV and provided to the shareholder shortly after each year-end. For information about the tax character of distributions made in prior calendar years, please refer to Performance-Tax Character of Distributions on the Fund’s webpage available at eatonvance.com. In recent years, a significant portion of the Fund’s distributions has been characterized as a return of capital. The Fund’s distributions are determined by the investment adviser based on its current assessment of the Fund’s long-term return potential. Fund distributions may be affected by numerous factors including changes in Fund performance, the cost of financing for leverage, portfolio holdings, realized and projected returns, and other factors. As portfolio and market conditions change, the rate of distributions paid by the Fund could change.

⁵	Depictions do not reflect the Fund’s option positions. Excludes cash and cash equivalents.

Fund snapshot and profile subject to change due to active management.


		5

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Portfolio of Investments


Common Stocks— 100.3%
Security	Shares		Value

Aerospace & Defense — 3.2%

Boeing Co. (The)⁽¹⁾		17,785	$	5,735,662

Northrop Grumman Corp.⁽¹⁾		12,027		2,945,412

Textron, Inc.		11,648		535,692

United Technologies Corp.⁽¹⁾		26,008		2,769,332

			$	11,986,098

Air Freight & Logistics — 0.1%

C.H. Robinson Worldwide, Inc.		5,324	$	447,695

			$	447,695

Airlines — 0.5%

Southwest Airlines Co.⁽¹⁾		36,616	$	1,701,912

			$	1,701,912

Auto Components — 0.3%

Garrett Motion, Inc.⁽²⁾		3,219	$	39,723

Goodyear Tire & Rubber Co. (The)		3,713		75,782

Lear Corp.⁽¹⁾		7,250		890,735

			$	1,006,240

Banks — 6.1%

Bank of America Corp.⁽¹⁾		96,896	$	2,387,518

Citigroup, Inc.⁽¹⁾		56,054		2,918,171

Fifth Third Bancorp⁽¹⁾		57,446		1,351,704

JPMorgan Chase & Co.⁽¹⁾		85,013		8,298,969

KeyCorp⁽¹⁾		85,122		1,258,103

M&T Bank Corp.		4,618		660,974

PNC Financial Services Group, Inc. (The)⁽¹⁾		13,046		1,525,208

SunTrust Banks, Inc.		5,538		279,337

Wells Fargo & Co.⁽¹⁾		86,859		4,002,463

			$	22,682,447

Beverages — 2.7%

Coca-Cola Co. (The)⁽¹⁾		122,893	$	5,818,984

PepsiCo, Inc.⁽¹⁾		38,171		4,217,132

			$	10,036,116

Biotechnology — 2.9%

AbbVie, Inc.⁽¹⁾		19,355	$	1,784,337

Amgen, Inc.⁽¹⁾		18,988		3,696,394

Celgene Corp.⁽¹⁾⁽²⁾		37,323		2,392,031

Gilead Sciences, Inc.⁽¹⁾		38,604		2,414,680


Security	Shares		Value

Biotechnology (continued)

Vertex Pharmaceuticals, Inc.⁽²⁾		1,850	$	306,564

			$	10,594,006

Building Products — 0.0%⁽³⁾

Resideo Technologies, Inc.⁽²⁾		5,366	$	110,271

			$	110,271

Capital Markets — 1.7%

E*TRADE Financial Corp.		10,178	$	446,610

Invesco, Ltd.⁽¹⁾		17,655		295,545

Lazard, Ltd., Class A		9,511		351,051

Legg Mason, Inc.		3,441		87,780

S&P Global, Inc.⁽¹⁾		20,139		3,422,422

State Street Corp.⁽¹⁾		27,413		1,728,938

			$	6,332,346

Chemicals — 2.2%

AdvanSix, Inc.⁽²⁾		1,530	$	37,240

DowDuPont, Inc.⁽¹⁾		80,552		4,307,921

Eastman Chemical Co.		3,608		263,781

Ingevity Corp.⁽²⁾		2,787		233,244

Sherwin-Williams Co. (The)⁽¹⁾		8,406		3,307,425

			$	8,149,611

Commercial Services & Supplies — 0.1%

Waste Management, Inc.		4,649	$	413,715

			$	413,715

Communications Equipment — 1.2%

Cisco Systems, Inc.⁽¹⁾		98,957	$	4,287,807

			$	4,287,807

Consumer Finance — 1.2%

American Express Co.⁽¹⁾		23,394	$	2,229,916

Discover Financial Services⁽¹⁾		40,754		2,403,671

			$	4,633,587

Containers & Packaging — 0.5%

Avery Dennison Corp.		15,307	$	1,375,028

WestRock Co.⁽¹⁾		16,727		631,611

			$	2,006,639


		6		See Notes to Financial Statements.

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Portfolio of Investments — continued


Security	Shares		Value

Distributors — 0.7%

Genuine Parts Co.⁽¹⁾		27,494	$	2,639,974

			$	2,639,974

Diversified Financial Services — 1.3%

Berkshire Hathaway, Inc., Class B⁽¹⁾⁽²⁾		24,462	$	4,994,651

			$	4,994,651

Diversified Telecommunication Services — 1.7%

AT&T, Inc.⁽¹⁾		144,091	$	4,112,357

Verizon Communications, Inc.⁽¹⁾		36,516		2,052,930

			$	6,165,287

Electric Utilities— 1.3%

Duke Energy Corp.⁽¹⁾		23,843	$	2,057,651

Edison International		20,090		1,140,509

Exelon Corp.		5,174		233,347

Pinnacle West Capital Corp.		7,168		610,714

Xcel Energy, Inc.		12,009		591,684

			$	4,633,905

Electrical Equipment — 0.5%

Emerson Electric Co.⁽¹⁾		32,303	$	1,930,104

			$	1,930,104

Energy Equipment & Services — 0.3%

Halliburton Co.⁽¹⁾		30,502	$	810,743

Helmerich & Payne, Inc.		7,615		365,063

			$	1,175,806

Entertainment — 2.1%

Netflix, Inc.⁽¹⁾⁽²⁾		6,968	$	1,865,055

Take-Two Interactive Software, Inc.⁽²⁾		1,400		144,116

Walt Disney Co. (The)⁽¹⁾		54,115		5,933,710

			$	7,942,881

Equity Real Estate Investment Trusts (REITs) — 2.4%

Apartment Investment & Management Co., Class A		12,428	$	545,341

AvalonBay Communities, Inc.⁽¹⁾		11,002		1,914,898

Crown Castle International Corp.		7,305		793,542

Equity Residential⁽¹⁾		14,774		975,232

Host Hotels & Resorts, Inc.⁽¹⁾		58,590		976,695

Kimco Realty Corp.⁽¹⁾		78,276		1,146,743

ProLogis, Inc.⁽¹⁾		22,296		1,309,221


Security	Shares		Value

Equity Real Estate Investment Trusts (REITs) (continued)

Realty Income Corp.		4,920	$	310,157

SBA Communications Corp.⁽¹⁾⁽²⁾		5,473		886,024

			$	8,857,853

Food & Staples Retailing — 0.6%

Costco Wholesale Corp.		802	$	163,375

Kroger Co. (The)		64,761		1,780,928

Sysco Corp.		4,255		266,618

Walmart, Inc.		1,859		173,166

			$	2,384,087

Food Products — 1.2%

Kellogg Co.⁽¹⁾		14,423	$	822,255

Kraft Heinz Co. (The)⁽¹⁾		8,326		358,351

Mondelez International, Inc., Class A⁽¹⁾		46,954		1,879,569

Tyson Foods, Inc., Class A⁽¹⁾		28,696		1,532,366

			$	4,592,541

Health Care Equipment & Supplies — 3.3%

Abbott Laboratories⁽¹⁾		78,922	$	5,708,428

Baxter International, Inc.⁽¹⁾		37,878		2,493,130

Stryker Corp.⁽¹⁾		23,912		3,748,206

Zimmer Biomet Holdings, Inc.		3,848		399,115

			$	12,348,879

Health Care Providers & Services — 3.0%

Centene Corp.⁽¹⁾⁽²⁾		7,212	$	831,543

CVS Health Corp.⁽¹⁾		47,515		3,113,183

UnitedHealth Group, Inc.⁽¹⁾		29,540		7,359,005

			$	11,303,731

Hotels, Restaurants & Leisure — 1.9%

Chipotle Mexican Grill, Inc.⁽²⁾		374	$	161,490

Marriott International, Inc., Class A⁽¹⁾		12,488		1,355,697

Marriott Vacations Worldwide Corp.		2,064		145,533

McDonald’s Corp.⁽¹⁾		25,653		4,555,203

Wyndham Destinations, Inc.⁽¹⁾		11,235		402,662

Wyndham Hotels & Resorts, Inc.		11,235		509,732

			$	7,130,317

Household Durables — 0.6%

Leggett & Platt, Inc.		11,383	$	407,967

Lennar Corp., Class A⁽¹⁾		18,642		729,834

Lennar Corp., Class B		372		11,655


		7		See Notes to Financial Statements.

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Portfolio of Investments — continued


Security	Shares		Value

Household Durables (continued)

Newell Brands, Inc.		61,788	$	1,148,639

			$	2,298,095

Household Products — 1.4%

Clorox Co. (The)⁽¹⁾		6,843	$	1,054,780

Kimberly-Clark Corp.⁽¹⁾		19,850		2,261,709

Procter & Gamble Co. (The)⁽¹⁾		21,335		1,961,113

			$	5,277,602

Industrial Conglomerates — 2.3%

3M Co.⁽¹⁾		21,663	$	4,127,668

Honeywell International, Inc.⁽¹⁾		32,197		4,253,868

			$	8,381,536

Insurance — 3.7%

Allstate Corp. (The)⁽¹⁾		36,105	$	2,983,356

Chubb, Ltd.		2,741		354,082

Cincinnati Financial Corp.⁽¹⁾		18,908		1,463,857

Lincoln National Corp.		39,818		2,043,062

Marsh & McLennan Cos., Inc.⁽¹⁾		44,342		3,536,275

MetLife, Inc.		6,849		281,220

Principal Financial Group, Inc.⁽¹⁾		29,001		1,280,974

Prudential Financial, Inc.		14,482		1,181,007

Travelers Cos., Inc. (The)		3,902		467,265

			$	13,591,098

Interactive Media & Services — 5.5%

Alphabet, Inc., Class A⁽¹⁾⁽²⁾		7,724	$	8,071,271

Alphabet, Inc., Class C⁽¹⁾⁽²⁾		7,534		7,802,286

Facebook, Inc., Class A⁽¹⁾⁽²⁾		35,046		4,594,180

			$	20,467,737

Internet & Direct Marketing Retail — 3.1%

Amazon.com, Inc.⁽¹⁾⁽²⁾		5,154	$	7,741,153

Booking Holdings, Inc.⁽¹⁾⁽²⁾		1,797		3,095,189

Shutterfly, Inc.⁽¹⁾⁽²⁾		19,125		769,973

			$	11,606,315

IT Services— 4.4%

Fidelity National Information Services, Inc.⁽¹⁾		26,132	$	2,679,837

International Business Machines Corp.⁽¹⁾		22,338		2,539,160

Mastercard, Inc., Class A⁽¹⁾		31,324		5,909,272

VeriSign, Inc.⁽¹⁾⁽²⁾		22,310		3,308,350

Visa, Inc., Class A⁽¹⁾		13,804		1,821,300

			$	16,257,919


Security	Shares		Value

Life Sciences Tools & Services — 1.3%

Thermo Fisher Scientific, Inc.⁽¹⁾		20,985	$	4,696,233

			$	4,696,233

Machinery — 0.6%

Caterpillar, Inc.		2,706	$	343,851

Dover Corp.⁽¹⁾		1,045		74,143

Snap-on, Inc.⁽¹⁾		6,380		926,950

Stanley Black & Decker, Inc.⁽¹⁾		8,690		1,040,541

			$	2,385,485

Media — 1.4%

Comcast Corp., Class A⁽¹⁾		153,659	$	5,232,089

			$	5,232,089

Metals & Mining — 0.4%

Nucor Corp.⁽¹⁾		25,287	$	1,310,119

			$	1,310,119

Multi-Utilities — 2.1%

Centerpoint Energy, Inc.		14,223	$	401,515

CMS Energy Corp.⁽¹⁾		65,445		3,249,344

Dominion Energy, Inc.		1,997		142,706

DTE Energy Co.⁽¹⁾		10,342		1,140,722

NiSource, Inc.⁽¹⁾		49,999		1,267,475

Public Service Enterprise Group, Inc.⁽¹⁾		34,219		1,781,099

			$	7,982,861

Multiline Retail — 0.8%

Kohl’s Corp.⁽¹⁾		22,868	$	1,517,063

Macy’s, Inc.⁽¹⁾		48,228		1,436,230

			$	2,953,293

Oil, Gas & Consumable Fuels — 4.6%

Chevron Corp.⁽¹⁾		49,190	$	5,351,380

EOG Resources, Inc.⁽¹⁾		25,247		2,201,791

Exxon Mobil Corp.⁽¹⁾		50,316		3,431,048

Marathon Petroleum Corp.⁽¹⁾		31,956		1,885,724

Phillips 66⁽¹⁾		24,334		2,096,374

Pioneer Natural Resources Co.		6,629		871,846

Williams Cos., Inc. (The)⁽¹⁾		58,161		1,282,450

			$	17,120,613

Personal Products — 0.1%

Estee Lauder Cos., Inc. (The), Class A⁽¹⁾		3,326	$	432,713

			$	432,713


		8		See Notes to Financial Statements.

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Portfolio of Investments — continued


Security	Shares		Value

Pharmaceuticals — 5.3%

Bristol-Myers Squibb Co.⁽¹⁾		70,886	$	3,684,654

Johnson & Johnson⁽¹⁾		51,433		6,637,429

Merck & Co., Inc.⁽¹⁾		70,172		5,361,842

Pfizer, Inc.⁽¹⁾		90,780		3,962,547

			$	19,646,472

Professional Services — 0.2%

ManpowerGroup, Inc.		1,193	$	77,306

Robert Half International, Inc.⁽¹⁾		13,943		797,540

			$	874,846

Real Estate Management & Development — 0.1%

CBRE Group, Inc., Class A⁽²⁾		8,158	$	326,646

			$	326,646

Road & Rail — 1.3%

J.B. Hunt Transport Services, Inc.		3,521	$	327,594

Kansas City Southern⁽¹⁾		11,539		1,101,397

Norfolk Southern Corp.⁽¹⁾		22,948		3,431,644

			$	4,860,635

Semiconductors & Semiconductor Equipment — 4.0%

Advanced Micro Devices, Inc.⁽²⁾		66,432	$	1,226,335

Analog Devices, Inc.⁽¹⁾		16,160		1,387,013

Applied Materials, Inc.⁽¹⁾		15,313		501,348

Broadcom, Inc.⁽¹⁾		8,718		2,216,813

Intel Corp.⁽¹⁾		49,395		2,318,107

NVIDIA Corp.⁽¹⁾		22,728		3,034,188

QUALCOMM, Inc.⁽¹⁾		53,656		3,053,563

Teradyne, Inc.⁽¹⁾		32,470		1,018,908

			$	14,756,275

Software — 6.0%

Microsoft Corp.⁽¹⁾		164,181	$	16,675,864

Oracle Corp.⁽¹⁾		93,841		4,236,921

salesforce.com, inc.⁽¹⁾⁽²⁾		10,977		1,503,520

			$	22,416,305

Specialty Retail — 2.1%

Advance Auto Parts, Inc.		3,365	$	529,853

Home Depot, Inc. (The)⁽¹⁾		35,644		6,124,352

Tiffany & Co.⁽¹⁾		14,641		1,178,747

			$	7,832,952


Security	Shares		Value

Technology Hardware, Storage & Peripherals — 4.3%

Apple, Inc.⁽¹⁾		101,439	$	16,000,988

			$	16,000,988

Textiles, Apparel & Luxury Goods — 0.7%

NIKE, Inc., Class B⁽¹⁾		30,243	$	2,242,216

Tapestry, Inc.		6,923		233,651

			$	2,475,867

Tobacco — 0.9%

Philip Morris International, Inc.⁽¹⁾		48,980	$	3,269,905

			$	3,269,905

Trading Companies & Distributors — 0.1%

Fastenal Co.		10,080	$	527,083

			$	527,083

Total Common Stocks — 100.3% (identified cost $130,263,829)			$	373,470,188

Total Written Call Options — (0.9)% (premiums received $4,018,994)			$	(3,193,775	)

Other Assets, Less Liabilities — 0.6%			$	2,232,914

Net Assets — 100.0%			$	372,509,327

The percentage shown for each investment category in the Portfolio of Investments is based on net assets.

⁽¹⁾	Security (or a portion thereof) has been pledged as collateral for written options.

⁽²⁾	Non-income producing security.

⁽³⁾	Amount is less than 0.05%.


		9		See Notes to Financial Statements.

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Portfolio of Investments — continued


Written Call Options — (0.9)%

Exchange-Traded Options — (0.9)%

Description	Number of Contracts		Notional Amount		Exercise Price		Expiration Date		Value

S&P 500 Index		115	$	28,828,775	$	2,750		1/4/19	$	(575	)

S&P 500 Index		120		30,082,200		2,700		1/7/19		(1,800	)

S&P 500 Index		120		30,082,200		2,715		1/9/19		(3,300	)

S&P 500 Index		120		30,082,200		2,700		1/11/19		(8,700	)

S&P 500 Index		120		30,082,200		2,650		1/14/19		(38,400	)

S&P 500 Index		120		30,082,200		2,625		1/16/19		(87,000	)

S&P 500 Index		120		30,082,200		2,550		1/18/19		(370,800	)

S&P 500 Index		120		30,082,200		2,475		1/22/19		(897,000	)

S&P 500 Index		120		30,082,200		2,470		1/23/19		(955,200	)

S&P 500 Index		120		30,082,200		2,525		1/25/19		(602,400	)

S&P 500 Index		120		30,082,200		2,600		1/25/19		(228,600	)

Total									$	(3,193,775	)


		10		See Notes to Financial Statements.

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Statement of Assets and Liabilities


Assets	December 31, 2018

Unaffiliated investments, at value (identified cost, $130,263,829)	$	373,470,188

Cash		1,845,975

Dividends receivable		507,986

Receivable for premiums on written options		359,830

Total assets	$	376,183,979

Liabilities

Written options outstanding, at value (premiums received, $4,018,994)	$	3,193,775

Payable to affiliates:

Investment adviser fee		327,500

Trustees’ fees		4,545

Accrued expenses		148,832

Total liabilities	$	3,674,652

Net Assets	$	372,509,327

Sources of Net Assets

Common shares, $0.01 par value, unlimited number of shares authorized, 26,535,891 shares issued and outstanding	$	265,359

Additional paid-in capital		128,886,080

Distributable earnings		243,357,888

Net Assets	$	372,509,327

Net Asset Value

($372,509,327 ÷ 26,535,891 common shares issued and outstanding)	$	14.04


		11		See Notes to Financial Statements.

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Statement of Operations


Investment Income	Year Ended December 31, 2018

Dividends	$	8,431,518

Total investment income	$	8,431,518

Expenses

Investment adviser fee	$	4,109,818

Trustees’ fees and expenses		17,107

Custodian fee		170,756

Transfer and dividend disbursing agent fees		18,585

Legal and accounting services		61,355

Printing and postage		149,675

Miscellaneous		43,835

Total expenses	$	4,571,131

Net investment income	$	3,860,387

Realized and Unrealized Gain (Loss)

Net realized gain (loss) —

Investment transactions	$	12,846,025

Written options		(4,540,435	)

Net realized gain	$	8,305,590

Change in unrealized appreciation (depreciation) —

Investments	$	(40,418,291	)

Written options		731,115

Net change in unrealized appreciation (depreciation)	$	(39,687,176	)

Net realized and unrealized loss	$	(31,381,586	)

Net decrease in net assets from operations	$	(27,521,199	)


		12		See Notes to Financial Statements.

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Statements of Changes in Net Assets


	Year Ended December 31,
Increase (Decrease) in Net Assets	2018			2017

From operations —

Net investment income	$	3,860,387		$	3,891,700

Net realized gain (loss)		8,305,590			(1,691,325	)

Net change in unrealized appreciation (depreciation)		(39,687,176	)		51,250,596

Net increase (decrease) in net assets from operations	$	(27,521,199	)	$	53,450,971

Distributions to shareholders⁽¹⁾	$	(6,589,683	)	$	(3,758,245	)

Tax return of capital to shareholders	$	(27,248,855	)	$	(28,629,836	)

Capital share transactions —

Proceeds from shelf offering, net of offering costs (see Note 5)	$	15,524,044		$	13,316,007

Reinvestment of distributions		485,636			559,816

Net increase in net assets from capital share transactions	$	16,009,680		$	13,875,823

Net increase (decrease) in net assets	$	(45,350,057	)	$	34,938,713

Net Assets

At beginning of year	$	417,859,384		$	382,920,671

At end of year	$	372,509,327		$	417,859,384	⁽²⁾

⁽¹⁾	For the year ended December 31, 2017, the source of distributions was from net investment income. The current year presentation of distributions conforms with the Disclosure Update and Simplification Rule issued by the Securities and Exchange Commission, effective November 5, 2018.

⁽²⁾	Includes accumulated undistributed net investment income of $130,695 at December 31, 2017. The requirement to disclose the corresponding amount as of December 31, 2018 was eliminated.


		13		See Notes to Financial Statements.

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Financial Highlights


	Year Ended December 31,
	2018			2017			2016			2015			2014

Net asset value — Beginning of year	$	16.350		$	15.500		$	15.520		$	16.310		$	16.250

Income (Loss) From Operations

Net investment income⁽¹⁾	$	0.148		$	0.156		$	0.189		$	0.198		$	0.170

Net realized and unrealized gain (loss)		(1.172	)		1.980			1.087			0.308			1.186

Total income (loss) from operations	$	(1.024	)	$	2.136		$	1.276		$	0.506		$	1.356

Less Distributions

From net investment income	$	(0.144	)	$	(0.150	)	$	(0.177	)	$	(0.189	)	$	(0.165	)

From net realized gain		(0.108	)		—			(0.482	)		(0.368	)		—

Tax return of capital		(1.044	)		(1.146	)		(0.637	)		(0.739	)		(1.131	)

Total distributions	$	(1.296	)	$	(1.296	)	$	(1.296	)	$	(1.296	)	$	(1.296	)

Premium from common shares sold through shelf offering (see Note 5)⁽¹⁾	$	0.010		$	0.010		$	—		$	—		$	—

Net asset value — End of year	$	14.040		$	16.350		$	15.500		$	15.520		$	16.310

Market value — End of year	$	13.450		$	16.730		$	16.520		$	16.690		$	15.900

Total Investment Return on Net Asset Value⁽²⁾		(6.69	)%		14.30	%		8.68	%		3.21	%		8.94	%

Total Investment Return on Market Value⁽²⁾		(12.65	)%		9.73	%		7.63	%		13.92	%		15.90	%

Ratios/Supplemental Data

Net assets, end of year (000’s omitted)	$	372,509		$	417,859		$	382,921		$	382,897		$	402,145

Ratios (as a percentage of average daily net assets):

Expenses⁽³⁾		1.11	%		1.11	%		1.12	%		1.11	%		1.13	%

Net investment income		0.94	%		0.97	%		1.25	%		1.23	%		1.04	%

Portfolio Turnover		4	%		1	%		6	%		7	%		2	%

⁽¹⁾	Computed using average shares outstanding.

⁽²⁾	Returns are historical and are calculated by determining the percentage change in net asset value or market value with all distributions reinvested. Distributions are assumed to be reinvested at prices obtained under the Fund’s dividend reinvestment plan.

⁽³⁾	Excludes the effect of custody fee credits, if any, of less than 0.005%. Effective September 1, 2015, custody fee credits, which were earned on cash deposit balances, were discontinued by the custodian.


		14		See Notes to Financial Statements.

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Notes to Financial Statements

1 Significant Accounting Policies

Eaton Vance Tax-Managed Buy-Write Income Fund (the Fund) is a Massachusetts business trust registered under the Investment Company Act of 1940, as amended (the 1940 Act), as a diversified, closed-end management investment company. The Fund’s primary investment objective is to provide current income and gains, with a secondary objective of capital appreciation.

The following is a summary of significant accounting policies of the Fund. The policies are in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP). The Fund is an investment company and follows accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946.

A Investment Valuation — The following methodologies are used to determine the market value or fair value of investments.

Equity Securities. Equity securities listed on a U.S. securities exchange generally are valued at the last sale or closing price on the day of valuation or, if no sales took place on such date, at the mean between the closing bid and asked prices on the exchange where such securities are principally traded. Equity securities listed on the NASDAQ Global or Global Select Market generally are valued at the NASDAQ official closing price. Unlisted or listed securities for which closing sales prices or closing quotations are not available are valued at the mean between the latest available bid and asked prices.

Derivatives. U.S. exchange-traded options are valued at the mean between the bid and asked prices at valuation time as reported by the Options Price Reporting Authority. Non U.S. exchange-traded options and over-the-counter options are valued by a third party pricing service using techniques that consider factors including the value of the underlying instrument, the volatility of the underlying instrument and the period of time until option expiration.

Fair Valuation. Investments for which valuations or market quotations are not readily available or are deemed unreliable are valued at fair value using methods determined in good faith by or at the direction of the Trustees of the Fund in a manner that fairly reflects the security’s value, or the amount that the Fund might reasonably expect to receive for the security upon its current sale in the ordinary course. Each such determination is based on a consideration of relevant factors, which are likely to vary from one pricing context to another. These factors may include, but are not limited to, the type of security, the existence of any contractual restrictions on the security’s disposition, the price and extent of public trading in similar securities of the issuer or of comparable companies or entities, quotations or relevant information obtained from broker/dealers or other market participants, information obtained from the issuer, analysts, and/or the appropriate stock exchange (for exchange-traded securities), an analysis of the company’s or entity’s financial condition, and an evaluation of the forces that influence the issuer and the market(s) in which the security is purchased and sold.

B Investment Transactions — Investment transactions for financial statement purposes are accounted for on a trade date basis. Realized gains and losses on investments sold are determined on the basis of identified cost.

C Income — Dividend income is recorded on the ex-dividend date for dividends received in cash and/or securities.

D Federal Taxes — The Fund’s policy is to comply with the provisions of the Internal Revenue Code applicable to regulated investment companies and to distribute to shareholders each year substantially all of its net investment income, and all or substantially all of its net realized capital gains. Accordingly, no provision for federal income or excise tax is necessary.

As of December 31, 2018, the Fund had no uncertain tax positions that would require financial statement recognition, de-recognition, or disclosure. The Fund files a U.S. federal income tax return annually after its fiscal year-end, which is subject to examination by the Internal Revenue Service for a period of three years from the date of filing.

E Use of Estimates — The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of income and expense during the reporting period. Actual results could differ from those estimates.

F Indemnifications — Under the Fund’s organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the Fund. Under Massachusetts law, if certain conditions prevail, shareholders of a Massachusetts business trust (such as the Fund) could be deemed to have personal liability for the obligations of the Fund. However, the Fund’s Declaration of Trust contains an express disclaimer of liability on the part of Fund shareholders and the By-laws provide that the Fund shall assume the defense on behalf of any Fund shareholders. Moreover, the By-laws also provide for indemnification out of Fund property of any shareholder held personally liable solely by reason of being or having been a shareholder for all loss or expense arising from such liability. Additionally, in the normal course of business, the Fund enters into agreements with service providers that may contain indemnification clauses. The Fund’s maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Fund that have not yet occurred.

G Written Options — Upon the writing of a call or a put option, the premium received by the Fund is included in the Statement of Assets and Liabilities as a liability. The amount of the liability is subsequently marked-to-market to reflect the current market value of the option written, in accordance with the Fund’s policies on investment valuations discussed above. Premiums received from writing options which expire are treated as realized gains. Premiums received from writing options which are exercised or are closed are added to or offset against the proceeds or amount paid on the transaction to determine the realized gain or loss. When an index option is exercised, the Fund is required to deliver an amount of cash determined by the excess of the exercise price of the option over the value of the index (in the case of a put) or the excess of the value of the index over the exercise price of the option (in the case of a call) at contract termination. If a put option on a security is exercised, the premium reduces the cost basis of the securities purchased by the Fund.


		15

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Notes to Financial Statements — continued

The Fund, as a writer of an option, may have no control over whether the underlying securities or other assets may be sold (call) or purchased (put) and, as a result, bears the market risk of an unfavorable change in the price of the securities or other assets underlying the written option. The Fund may also bear the risk of not being able to enter into a closing transaction if a liquid secondary market does not exist.

2 Distributions to Shareholders and Income Tax Information

Subject to its Managed Distribution Plan, the Fund makes monthly distributions from its cash available for distribution, which consists of the Fund’s dividends and interest income after payment of Fund expenses, net option premiums and net realized and unrealized gains on stock investments. The Fund intends to distribute all or substantially all of its net realized capital gains. Distributions are recorded on the ex-dividend date. Distributions to shareholders are determined in accordance with income tax regulations, which may differ from U.S. GAAP. As required by U.S. GAAP, only distributions in excess of tax basis earnings and profits are reported in the financial statements as a return of capital. Permanent differences between book and tax accounting relating to distributions are reclassified to paid-in capital. For tax purposes, distributions from short-term capital gains are considered to be from ordinary income. Distributions in any year may include a substantial return of capital component.

The tax character of distributions declared for the years ended December 31, 2018 and December 31, 2017 was as follows:


	Year Ended December 31,
	2018		2017

Ordinary income	$	3,775,330	$	3,758,245

Long-term capital gains	$	2,814,353	$	—

Tax return of capital	$	27,248,855	$	28,629,836

During the year ended December 31, 2018, distributable earnings was increased by $3,449 and paid-in capital was decreased by $3,449 due to differences between book and tax accounting for investments in partnerships. These reclassifications had no effect on the net assets or net asset value per share of the Fund.

As of December 31, 2018, the components of distributable earnings (accumulated loss) on a tax basis were as follows:



Net unrealized appreciation	$	243,357,888

The cost and unrealized appreciation (depreciation) of investments, including open derivative contracts, of the Fund at December 31, 2018, as determined on a federal income tax basis, were as follows:



Aggregate cost	$	130,112,300

Gross unrealized appreciation	$	243,362,242

Gross unrealized depreciation		(4,354	)

Net unrealized appreciation	$	243,357,888

3 Investment Adviser Fee and Other Transactions with Affiliates

The investment adviser fee is earned by Eaton Vance Management (EVM) as compensation for management and investment advisory services rendered to the Fund. The fee is computed at an annual rate of 1.00% of the Fund’s average daily gross assets and is payable monthly. Gross assets as referred to herein represent net assets plus obligations attributable to investment leverage, if any. For the year ended December 31, 2018, the Fund’s investment adviser fee amounted to $4,109,818. Pursuant to a sub-advisory agreement, EVM has delegated a portion of the investment management to Parametric Portfolio Associates LLC (Parametric), a majority-owned subsidiary of Eaton Vance Corp. EVM pays Parametric a portion of its investment adviser fee for sub-advisory services provided to the Fund. EVM also serves as administrator of the Fund, but receives no compensation.

Trustees and officers of the Fund who are members of EVM’s organization receive remuneration for their services to the Fund out of the investment adviser fee. Trustees of the Fund who are not affiliated with EVM may elect to defer receipt of all or a percentage of their annual fees in accordance with the terms of the Trustees Deferred Compensation Plan. For the year ended December 31, 2018, no significant amounts have been deferred. Certain officers and Trustees of the Fund are officers of EVM.


		16

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Notes to Financial Statements — continued

4 Purchases and Sales of Investments

Purchases and sales of investments, other than short-term obligations, aggregated $14,841,217 and $33,767,658, respectively, for the year ended December 31, 2018.

5 Common Shares of Beneficial Interest and Shelf Offering

Common shares issued by the Fund pursuant to its dividend reinvestment plan for the years ended December 31, 2018 and December 31, 2017 were 30,675 and 34,768, respectively.

The Board of Trustees of the Fund approved the continuation of the Fund’s share repurchase program that has been in effect since August 6, 2012. Pursuant to the terms of the reauthorization of the program, the Fund may repurchase up to 10% of its common shares outstanding as of September 30, 2013 in open market transactions at a discount to net asset value (NAV). The terms of the reauthorization increased the number of shares available for repurchase. The repurchase program does not obligate the Fund to purchase a specific amount of shares. There were no repurchases of common shares by the Fund for the years ended December 31, 2018 and December 31, 2017.

Pursuant to a registration statement filed with and declared effective on April 5, 2017 by the SEC, the Fund is authorized to issue up to an additional 2,965,949 common shares through an equity shelf offering program (the “shelf offering”). Under the shelf offering, the Fund, subject to market conditions, may raise additional capital from time to time and in varying amounts and offering methods at a net price at or above the Fund’s net asset value per common share.

During the years ended December 31, 2018 and December 31, 2017, the Fund sold 952,640 and 807,116 common shares, respectively, and received proceeds (net of offering costs) of $15,524,044 and $13,316,007, respectively, through its shelf offering. The net proceeds in excess of the net asset value of the shares sold were $256,184 and $249,669, respectively. Offering costs (other than the applicable sales commissions) incurred in connection with the shelf offering were borne directly by EVM. Eaton Vance Distributors, Inc. (EVD), an affiliate of EVM, is the distributor of the Fund’s shares and is entitled to receive a sales commission from the Fund of 1.00% of the gross sales price per share, a portion of which is re-allowed to sales agents. The Fund was informed that the sales commissions retained by EVD during the years ended December 31, 2018 and December 31, 2017 were $31,362 and $26,902, respectively.

6 Financial Instruments

The Fund may trade in financial instruments with off-balance sheet risk in the normal course of its investing activities. These financial instruments may include written options and may involve, to a varying degree, elements of risk in excess of the amounts recognized for financial statement purposes. The notional or contractual amounts of these instruments represent the investment the Fund has in particular classes of financial instruments and do not necessarily represent the amounts potentially subject to risk. The measurement of the risks associated with these instruments is meaningful only when all related and offsetting transactions are considered. A summary of obligations under these financial instruments at December 31, 2018 is included in the Portfolio of Investments. At December 31, 2018, the Fund had sufficient cash and/or securities to cover commitments under these contracts.

The Fund is subject to equity price risk in the normal course of pursuing its investment objectives. The Fund writes index call options above the current value of the index to generate premium income. In writing index call options, the Fund in effect, sells potential appreciation in the value of the applicable index above the exercise price in exchange for the option premium received. The Fund retains the risk of loss, minus the premium received, should the price of the underlying index decline.

The fair value of open derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) and whose primary underlying risk exposure is equity price risk at December 31, 2018 was as follows:


	Fair Value
Derivative	Asset Derivative		Liability Derivative⁽¹⁾

Written options	$	—	$	(3,193,775	)

⁽¹⁾	Statement of Assets and Liabilities location: Written options outstanding, at value.


		17

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Notes to Financial Statements — continued

The effect of derivative instruments (not considered to be hedging instruments for accounting disclosure purposes) on the Statement of Operations and whose primary underlying risk exposure is equity price risk for the year ended December 31, 2018 was as follows:


Derivative	Realized Gain (Loss) on Derivatives Recognized in Income⁽¹⁾			Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in Income⁽²⁾

Written options	$	(4,540,435	)	$	731,115

⁽¹⁾	Statement of Operations location: Net realized gain (loss) – Written options.

⁽²⁾	Statement of Operations location: Change in unrealized appreciation (depreciation) – Written options.

The average number of written options contracts outstanding during the year ended December 31, 2018, which is indicative of the volume of this derivative type, was 1,395 contracts.

7 Fair Value Measurements

Under generally accepted accounting principles for fair value measurements, a three-tier hierarchy to prioritize the assumptions, referred to as inputs, is used in valuation techniques to measure fair value. The three-tier hierarchy of inputs is summarized in the three broad levels listed below.

•

Level 1 – quoted prices in active markets for identical investments

•

Level 2 – other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

•

Level 3 – significant unobservable inputs (including a fund’s own assumptions in determining the fair value of investments)

In cases where the inputs used to measure fair value fall in different levels of the fair value hierarchy, the level disclosed is determined based on the lowest level input that is significant to the fair value measurement in its entirety. The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities.

At December 31, 2018, the hierarchy of inputs used in valuing the Fund’s investments and open derivative instruments, which are carried at value, were as follows:


Asset Description	Level 1			Level 2		Level 3		Total

Common Stocks	$	373,470,188	*	$	—	$	—	$	373,470,188

Total Investments	$	373,470,188		$	—	$	—	$	373,470,188

Liability Description

Written Call Options	$	(3,193,775	)	$	—	$	—	$	(3,193,775	)

Total	$	(3,193,775	)	$	—	$	—	$	(3,193,775	)

*	The level classification by major category of investments is the same as the category presentation in the Portfolio of Investments.


		18

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Report of Independent Registered Public Accounting Firm

To the Trustees and Shareholders of Eaton Vance Tax-Managed Buy-Write Income Fund:

Opinion on the Financial Statements and Financial Highlights

We have audited the accompanying statement of assets and liabilities of Eaton Vance Tax-Managed Buy-Write Income Fund (the “Fund”), including the portfolio of investments, as of December 31, 2018, the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended, and the related notes. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Fund as of December 31, 2018, and the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements and financial highlights are the responsibility of the Fund’s management. Our responsibility is to express an opinion on the Fund’s financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. Our procedures included confirmation of securities owned as of December 31, 2018, by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.

/s/ Deloitte & Touche LLP

Boston, Massachusetts

February 19, 2019

We have served as the auditor of one or more Eaton Vance investment companies since 1959.


		19

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Federal Tax Information (Unaudited)

The Form 1099-DIV you received in February 2019 showed the tax status of all distributions paid to your account in calendar year 2018. Shareholders are advised to consult their own tax adviser with respect to the tax consequences of their investment in the Fund. As required by the Internal Revenue Code and/or regulations, shareholders must be notified regarding the status of qualified dividend income for individuals, the dividends received deduction for corporations and capital gains dividends.

Qualified Dividend Income. For the fiscal year ended December 31, 2018, the Fund designates approximately $8,119,321, or up to the maximum amount of such dividends allowable pursuant to the Internal Revenue Code, as qualified dividend income eligible for the reduced tax rate of 15%.

Dividends Received Deduction. Corporate shareholders are generally entitled to take the dividends received deduction on the portion of the Fund’s dividend distribution that qualifies under tax law. For the Fund’s fiscal 2018 ordinary income dividends, 100% qualifies for the corporate dividends received deduction.

Capital Gains Dividends. The Fund hereby designates as a capital gain dividend with respect to the taxable year ended December 31, 2018, $2,814,353 or, if subsequently determined to be different, the net capital gain of such year.


		20

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Dividend Reinvestment Plan

The Fund offers a dividend reinvestment plan (Plan) pursuant to which shareholders may elect to have distributions automatically reinvested in common shares (Shares) of the Fund. You may elect to participate in the Plan by completing the Dividend Reinvestment Plan Application Form. If you do not participate, you will receive all distributions in cash paid by check mailed directly to you by American Stock Transfer & Trust Company, LLC (AST) as dividend paying agent. On the distribution payment date, if the NAV per Share is equal to or less than the market price per Share plus estimated brokerage commissions, then new Shares will be issued. The number of Shares shall be determined by the greater of the NAV per Share or 95% of the market price. Otherwise, Shares generally will be purchased on the open market by AST, the Plan agent (Agent). Distributions subject to income tax (if any) are taxable whether or not Shares are reinvested.

If your Shares are in the name of a brokerage firm, bank, or other nominee, you can ask the firm or nominee to participate in the Plan on your behalf. If the nominee does not offer the Plan, you will need to request that the Fund’s transfer agent re-register your Shares in your name or you will not be able to participate.

The Agent’s service fee for handling distributions will be paid by the Fund. Plan participants will be charged their pro rata share of brokerage commissions on all open-market purchases.

Plan participants may withdraw from the Plan at any time by writing to the Agent at the address noted on the following page. If you withdraw, you will receive Shares in your name for all Shares credited to your account under the Plan. If a participant elects by written notice to the Agent to sell part or all of his or her Shares and remit the proceeds, the Agent is authorized to deduct a $5.00 fee plus brokerage commissions from the proceeds.

If you wish to participate in the Plan and your Shares are held in your own name, you may complete the form on the following page and deliver it to the Agent. Any inquiries regarding the Plan can be directed to the Agent at 1-866-439-6787.


		21

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Application for Participation in Dividend Reinvestment Plan

This form is for shareholders who hold their common shares in their own names. If your common shares are held in the name of a brokerage firm, bank, or other nominee, you should contact your nominee to see if it will participate in the Plan on your behalf. If you wish to participate in the Plan, but your brokerage firm, bank, or nominee is unable to participate on your behalf, you should request that your common shares be re-registered in your own name which will enable your participation in the Plan.

The following authorization and appointment is given with the understanding that I may terminate it at any time by terminating my participation in the Plan as provided in the terms and conditions of the Plan.

Please print exact name on account

Shareholder signature Date

Please sign exactly as your common shares are registered. All persons whose names appear on the share certificate must sign.

YOU SHOULD NOT RETURN THIS FORM IF YOU WISH TO RECEIVE YOUR DISTRIBUTIONS IN CASH. THIS IS NOT A PROXY.

This authorization form, when signed, should be mailed to the following address:

Eaton Vance Tax-Managed Buy-Write Income Fund

c/o American Stock Transfer & Trust Company, LLC

P.O. Box 922

Wall Street Station

New York, NY 10269-0560


		22

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Management and Organization

Fund Management. The Trustees of Eaton Vance Tax-Managed Buy-Write Income Fund (the Fund) are responsible for the overall management and supervision of the Fund’s affairs. The Trustees and officers of the Fund are listed below. Except as indicated, each individual has held the office shown or other offices in the same company for the last five years. The “noninterested Trustees” consist of those Trustees who are not “interested persons” of the Fund, as that term is defined under the 1940 Act. The business address of each Trustee and officer is Two International Place, Boston, Massachusetts 02110. As used below, “EVC” refers to Eaton Vance Corp., “EV” refers to Eaton Vance, Inc., “EVM” refers to Eaton Vance Management, “BMR” refers to Boston Management and Research and “EVD” refers to Eaton Vance Distributors, Inc. EVC and EV are the corporate parent and trustee, respectively, of EVM and BMR. EVD is a wholly-owned subsidiary of EVC. Each officer affiliated with Eaton Vance may hold a position with other Eaton Vance affiliates that is comparable to his or her position with EVM listed below. Each Trustee oversees 175 portfolios in the Eaton Vance Complex (including all master and feeder funds in a master feeder structure). Each officer serves as an officer of certain other Eaton Vance funds. Each Trustee serves for a three year term. Each officer serves until his or her successor is elected.


Name and Year of Birth	Position(s) with the Fund	Term Expiring; Trustee Since⁽¹⁾	Principal Occupation(s) and Directorships During Past Five Years and Other Relevant Experience

Interested Trustee

Thomas E. Faust Jr. 1958	Class I Trustee	Until 2021. Trustee since 2007.	Chairman, Chief Executive Officer and President of EVC, Director and President of EV, Chief Executive Officer and President of EVM and BMR, and Director of EVD. Trustee and/or officer of 175 registered investment companies. Mr. Faust is an interested person because of his positions with EVM, BMR, EVD, EVC and EV, which are affiliates of the Fund. Directorships in the Last Five Years.⁽²⁾ Director of EVC and Hexavest Inc. (investment management firm).

Noninterested Trustees

Mark R. Fetting 1954	Class III Trustee	Until 2020. Trustee since 2016.	Private investor. Formerly held various positions at Legg Mason, Inc. (investment management firm) (2000-2012), including President, Chief Executive Officer, Director and Chairman (2008-2012), Senior Executive Vice President (2004-2008) and Executive Vice President (2001-2004). Formerly, President of Legg Mason family of funds (2001-2008). Formerly, Division President and Senior Officer of Prudential Financial Group, Inc. and related companies (investment management firm) (1991-2000). Directorships in the Last Five Years. None.

Cynthia E. Frost 1961	Class I Trustee	Until 2021. Trustee since 2014.	Private investor. Formerly, Chief Investment Officer of Brown University (university endowment) (2000-2012). Formerly, Portfolio Strategist for Duke Management Company (university endowment manager) (1995-2000). Formerly, Managing Director, Cambridge Associates (investment consulting company) (1989-1995). Formerly, Consultant, Bain and Company (management consulting firm) (1987-1989). Formerly, Senior Equity Analyst, BA Investment Management Company (1983-1985). Directorships in the Last Five Years. None.

George J. Gorman 1952	Class II Trustee	Until 2019. Trustee since 2014.	Principal at George J. Gorman LLC (consulting firm). Formerly, Senior Partner at Ernst & Young LLP (a registered public accounting firm) (1974-2009). Directorships in the Last Five Years. Formerly, Trustee of the BofA Funds Series Trust (11 funds) (2011-2014) and of the Ashmore Funds (9 funds) (2010-2014).

Valerie A. Mosley 1960	Class III Trustee	Until 2020. Trustee since 2014.	Chairwoman and Chief Executive Officer of Valmo Ventures (a consulting and investment firm). Former Partner and Senior Vice President, Portfolio Manager and Investment Strategist at Wellington Management Company, LLP (investment management firm) (1992-2012). Former Chief Investment Officer, PG Corbin Asset Management (1990-1992). Formerly worked in institutional corporate bond sales at Kidder Peabody (1986-1990). Directorships in the Last Five Years.⁽²⁾ Director of Envestnet, Inc. (provider of intelligent systems for wealth management and financial wellness) (since 2018).


		23

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Management and Organization — continued


Name and Year of Birth	Position(s) with the Fund	Term Expiring; Trustee Since⁽¹⁾	Principal Occupation(s) and Directorships During Past Five Years and Other Relevant Experience

Noninterested Trustees (continued)

William H. Park 1947	Chairperson of the Board and Class II Trustee	Until 2019. Chairperson of the Board since 2016 and Trustee since 2003.	Private investor. Formerly, Consultant (management and transactional) (2012-2014). Formerly, Chief Financial Officer, Aveon Group L.P. (investment management firm) (2010-2011). Formerly, Vice Chairman, Commercial Industrial Finance Corp. (specialty finance company) (2006-2010). Formerly, President and Chief Executive Officer, Prizm Capital Management, LLC (investment management firm) (2002-2005). Formerly, Executive Vice President and Chief Financial Officer, United Asset Management Corporation (investment management firm) (1982-2001). Formerly, Senior Manager, Price Waterhouse (now PricewaterhouseCoopers) (a registered public accounting firm) (1972-1981). Directorships in the Last Five Years.⁽²⁾ None.

Helen Frame Peters 1948	Class III Trustee	Until 2020. Trustee since 2008.	Professor of Finance, Carroll School of Management, Boston College. Formerly, Dean, Carroll School of Management, Boston College (2000-2002). Formerly, Chief Investment Officer, Fixed Income, Scudder Kemper Investments (investment management firm) (1998-1999). Formerly, Chief Investment Officer, Equity and Fixed Income, Colonial Management Associates (investment management firm) (1991-1998). Directorships in the Last Five Years.⁽²⁾ None.

Keith Quinton⁽³⁾ 1958	Class II Trustee	Until 2019. Trustee since 2018.	Independent Investment Committee Member at New Hampshire Retirement System (since 2017). Advisory Committee member at Northfield Information Services, Inc. (risk management analytics provider) (since 2016). Formerly, Portfolio Manager and Senior Quantitative Analyst at Fidelity Investments (investment management firm) (2001-2014). Directorships in the Last Five Years. Director of New Hampshire Municipal Bond Bank (since 2016).

Marcus L. Smith⁽³⁾ 1966	Class III Trustee	Until 2020. Trustee since 2018.	Member of Posse Boston Advisory Board (foundation) (since 2015); Trustee at University of Mount Union (since 2008). Formerly, Portfolio Manager at MFS Investment Management (investment management firm) (1994-2017). Directorships in the Last Five Years. Director of MSCI Inc. (global provider of investment decision support tools) (since 2017). Director of DCT Industrial Trust Inc. (logistics real estate company) (since 2017).

Susan J. Sutherland 1957	Class II Trustee	Until 2019. Trustee since 2015.	Private investor. Formerly, Associate, Counsel and Partner at Skadden, Arps, Slate, Meagher & Flom LLP (law firm) (1982-2013). Directorships in the Last Five Years. Formerly, Director of Montpelier Re Holdings Ltd. (global provider of customized insurance and reinsurance products) (2013-2015).

Scott E. Wennerholm 1959	Class I Trustee	Until 2021. Trustee since 2016.	Formerly, Trustee at Wheelock College (postsecondary institution) (2012-2018). Formerly, Consultant at GF Parish Group (executive recruiting firm) (2016-2017). Formerly, Chief Operating Officer and Executive Vice President at BNY Mellon Asset Management (investment management firm) (2005-2011). Formerly, Chief Operating Officer and Chief Financial Officer at Natixis Global Asset Management (investment management firm) (1997-2004). Formerly, Vice President at Fidelity Investments Institutional Services (investment management firm) (1994-1997). Directorships in the Last Five Years. None.


Name and Year of Birth	Position(s) with the Fund	Officer Since⁽⁴⁾	Principal Occupation(s) During Past Five Years

Principal Officers who are not Trustees

Edward J. Perkin 1972	President	2014	Chief Equity Investment Officer and Vice President of EVM and BMR since 2014. Formerly, Chief Investment Officer, International and Emerging Markets Equity, and Managing Director, Portfolio Manager, Europe, EAFE and Global at Goldman Sachs Asset Management (2002-2014). Also Vice President of Calvert Research and Management (“CRM”).

Maureen A. Gemma 1960	Vice President, Secretary and Chief Legal Officer	2005	Vice President of EVM and BMR. Also Vice President of CRM.


		24

Eaton Vance

Tax-Managed Buy-Write Income Fund

December 31, 2018

Management and Organization — continued


Name and Year of Birth	Position(s) with the Fund	Officer Since⁽⁴⁾	Principal Occupation(s) During Past Five Years

Principal Officers who are not Trustees (continued)

James F. Kirchner 1967	Treasurer	2007	Vice President of EVM and BMR. Also Vice President of CRM.

Richard F. Froio 1968	Chief Compliance Officer	2017	Vice President of EVM and BMR since 2017. Formerly Deputy Chief Compliance Officer (Adviser/Funds) and Chief Compliance Officer (Distribution) at PIMCO (2012-2017) and Managing Director at BlackRock/Barclays Global Investors (2009-2012).

⁽¹⁾

Year first appointed to serve as Trustee for a fund in the Eaton Vance family of funds. Each Trustee has served continuously since appointment unless indicated otherwise. Each Trustee holds office until the annual meeting for the year in which his or her term expires and until his or her successor is elected and qualified, subject to a prior death, resignation, retirement, disqualification or removal.

⁽²⁾

During their respective tenures, the Trustees (except for Mmes. Frost and Sutherland and Messrs. Fetting, Gorman, Quinton, Smith and Wennerholm) also served as Board members of one or more of the following funds (which operated in the years noted): eUnitsTM 2 Year U.S. Market Participation Trust: Upside to Cap / Buffered Downside (launched in 2012 and terminated in 2014); and eUnitsTM 2 Year U.S. Market Participation Trust II: Upside to Cap / Buffered Downside (launched in 2012 and terminated in 2014). However, Ms. Mosley did not serve as a Board member of eUnitsTM 2 Year U.S. Market Participation Trust: Upside to Cap / Buffered Downside (launched in 2012 and terminated in 2014).

⁽³⁾	Messrs. Quinton and Smith began serving as Trustees effective October 1, 2018.

⁽⁴⁾	Year first elected to serve as officer of a fund in the Eaton Vance family of funds when the officer has served continuously. Otherwise, year of most recent election as an officer of a fund in the Eaton Vance family of funds. Titles may have changed since initial election.


		25

Eaton Vance Funds

IMPORTANT NOTICES

Privacy. The Eaton Vance organization is committed to ensuring your financial privacy. Each of the financial institutions identified below has in effect the following policy (“Privacy Policy”) with respect to nonpublic personal information about its customers:

•

Only such information received from you, through application forms or otherwise, and information about your Eaton Vance fund transactions will be collected. This may include information such as name, address, social security number, tax status, account balances and transactions.

•

None of such information about you (or former customers) will be disclosed to anyone, except as permitted by law (which includes disclosure to employees necessary to service your account). In the normal course of servicing a customer’s account, Eaton Vance may share information with unaffiliated third parties that perform various required services such as transfer agents, custodians and broker-dealers.

•

Policies and procedures (including physical, electronic and procedural safeguards) are in place that are designed to protect the confidentiality of such information.

•

We reserve the right to change our Privacy Policy at any time upon proper notification to you. Customers may want to review our Privacy Policy periodically for changes by accessing the link on our homepage: www.eatonvance.com.

Our pledge of privacy applies to the following entities within the Eaton Vance organization: the Eaton Vance Family of Funds, Eaton Vance Management, Eaton Vance Investment Counsel, Eaton Vance Distributors, Inc., Eaton Vance Trust Company, Eaton Vance Management (International) Limited, Eaton Vance Advisers International Ltd., Eaton Vance Management’s Real Estate Investment Group and Boston Management and Research. In addition, our Privacy Policy applies only to those Eaton Vance customers who are individuals and who have a direct relationship with us. If a customer’s account (i.e., fund shares) is held in the name of a third-party financial advisor/broker-dealer, it is likely that only such advisor’s privacy policies apply to the customer. This notice supersedes all previously issued privacy disclosures. For more information about Eaton Vance’s Privacy Policy, please call 1-800-262-1122.

Delivery of Shareholder Documents. The Securities and Exchange Commission (SEC) permits funds to deliver only one copy of shareholder documents, including prospectuses, proxy statements and shareholder reports, to fund investors with multiple accounts at the same residential or post office box address. This practice is often called “householding” and it helps eliminate duplicate mailings to shareholders. American Stock Transfer & Trust Company, LLC (“AST”), the closed-end funds transfer agent, or your financial advisor, may household the mailing of your documents indefinitely unless you instruct AST, or your financial advisor, otherwise. If you would prefer that your Eaton Vance documents not be householded, please contact AST or your financial advisor. Your instructions that householding not apply to delivery of your Eaton Vance documents will typically be effective within 30 days of receipt by AST or your financial advisor.

Portfolio Holdings. Each Eaton Vance Fund and its underlying Portfolio(s) (if applicable) will file a schedule of portfolio holdings on Form N-Q with the SEC for the first and third quarters of each fiscal year. The Form N-Q will be available on the Eaton Vance website at www.eatonvance.com, by calling Eaton Vance at 1-800-262-1122 or in the EDGAR database on the SEC’s website at www.sec.gov. Form N-Q may also be reviewed and copied at the SEC’s public reference room in Washington, D.C. (call 1-800-732-0330 for information on the operation of the public reference room).

Proxy Voting. From time to time, funds are required to vote proxies related to the securities held by the funds. The Eaton Vance Funds or their underlying Portfolios (if applicable) vote proxies according to a set of policies and procedures approved by the Funds’ and Portfolios’ Boards. You may obtain a description of these policies and procedures and information on how the Funds or Portfolios voted proxies relating to portfolio securities during the most recent 12-month period ended June 30, without charge, upon request, by calling 1-800-262-1122 and by accessing the SEC’s website at www.sec.gov.

Share Repurchase Program. The Fund’s Board of Trustees has approved a share repurchase program authorizing the Fund to repurchase up to 10% of its outstanding common shares as of the approved date in open-market transactions at a discount to net asset value. The repurchase program does not obligate the Fund to purchase a specific amount of shares. The Fund’s repurchase activity, including the number of shares purchased, average price and average discount to net asset value, is disclosed in the Fund’s annual and semi-annual reports to shareholders.

Additional Notice to Shareholders. If applicable, a Fund may also redeem or purchase its outstanding preferred shares in order to maintain compliance with regulatory requirements, borrowing or rating agency requirements or for other purposes as it deems appropriate or necessary.

Closed-End Fund Information. Eaton Vance closed-end funds make fund performance data and certain information about portfolio characteristics available on the Eaton Vance website shortly after the end of each month. Other information about the funds is available on the website. The funds’ net asset value per share is readily accessible on the Eaton Vance website. Portfolio holdings for the most recent month-end are also posted to the website approximately 30 days following the end of the month. This information is available at www.eatonvance.com on the fund information pages under “Individual Investors — Closed-End Funds”.


		26

This Page Intentionally Left Blank

Investment Adviser and Administrator

Eaton Vance Management

Two International Place

Boston, MA 02110

Sub-Adviser

Parametric Portfolio Associates LLC

1918 Eighth Avenue, Suite 3100

Seattle, WA 98101

Custodian

State Street Bank and Trust Company

State Street Financial Center, One Lincoln Street

Boston, MA 02111

Transfer Agent

American Stock Transfer & Trust Company, LLC

6201 15^th Avenue

Brooklyn, NY 11219

Independent Registered Public Accounting Firm

Deloitte & Touche LLP

200 Berkeley Street

Boston, MA 02116-5022

Fund Offices

Two International Place

Boston, MA 02110

LOGO

2427 12.31.18

Item 2. Code of Ethics

The registrant has adopted a code of ethics applicable to its Principal Executive Officer, Principal Financial Officer and Principal Accounting Officer. The registrant undertakes to provide a copy of such code of ethics to any person upon request, without charge, by calling 1-800-262-1122. The registrant has not amended the code of ethics as described in Form N-CSR during the period covered by this report. The registrant has not granted any waiver, including an implicit waiver, from a provision of the code of ethics as described in Form N-CSR during the period covered by this report.

Item 3. Audit Committee Financial Expert

The registrant’s Board has designated George J. Gorman and William H. Park, each an independent trustee, as audit committee financial experts. Mr. Gorman is a certified public accountant who is the Principal at George J. Gorman LLC (a consulting firm). Previously, Mr. Gorman served in various capacities at Ernst & Young LLP (a registered public accounting firm), including as Senior Partner. Mr. Gorman also has experience serving as an independent trustee and audit committee financial expert of other mutual fund complexes. Mr. Park is a certified public accountant who is a private investor. Previously, he served as a consultant, as the Chief Financial Officer of Aveon Group, L.P. (an investment management firm), as the Vice Chairman of Commercial Industrial Finance Corp. (specialty finance company), as President and Chief Executive Officer of Prizm Capital Management, LLC (investment management firm), as Executive Vice President and Chief Financial Officer of United Asset Management Corporation (an institutional investment management firm) and as a Senior Manager at Price Waterhouse (now PricewaterhouseCoopers) (a registered public accounting firm).

Item 4. Principal Accountant Fees and Services

(a) –(d)

The following table presents the aggregate fees billed to the registrant for the registrant’s fiscal years ended December 31, 2017 and December 31, 2018 by the registrant’s principal accountant, Deloitte & Touche LLP (“D&T”), for professional services rendered for the audit of the registrant’s annual financial statements and fees billed for other services rendered by D&T during such periods.


Fiscal Years Ended	12/31/17		12/31/18
Audit Fees	$	47,920	$	47,920
Audit-Related Fees⁽¹⁾	$	0	$	0
Tax Fees⁽²⁾	$	9,144	$	9,144
All Other Fees⁽³⁾	$	0	$	0

Total	$	57,064	$	57,064

⁽¹⁾	Audit-related fees consist of the aggregate fees billed for assurance and related services that are reasonably related to the performance of the audit of financial statements and are not reported under the category of audit fees.

⁽²⁾	Tax fees consist of the aggregate fees billed for professional services rendered by the principal accountant relating to tax compliance, tax advice, and tax planning and specifically include fees for tax return preparation and other related tax compliance/planning matters.

⁽³⁾	All other fees consist of the aggregate fees billed for products and services provided by the principal accountant other than audit, audit-related, and tax services.

(e)(1) The registrant’s audit committee has adopted policies and procedures relating to the pre-approval of services provided by the registrant’s principal accountant (the “Pre-Approval Policies”). The Pre-Approval Policies establish a framework intended to assist the audit committee in the proper discharge of its pre-approval responsibilities. As a general matter, the Pre-Approval Policies (i) specify certain types of audit, audit-related, tax, and other services determined to be pre-approved by the audit committee; and (ii) delineate specific procedures governing the mechanics of the pre-approval process, including the approval and monitoring of audit and non-audit service fees. Unless a service is specifically pre-approved under the Pre-Approval Policies, it must be separately pre-approved by the audit committee.

The Pre-Approval Policies and the types of audit and non-audit services pre-approved therein must be reviewed and ratified by the registrant’s audit committee at least annually. The registrant’s audit committee maintains full responsibility for the appointment, compensation, and oversight of the work of the registrant’s principal accountant.

(e)(2) No services described in paragraphs (b)-(d) above were approved by the registrant’s audit committee pursuant to the “de minimis exception” set forth in Rule 2-01(c)(7)(i)(C) of Regulation S-X.

(f) Not applicable.

(g) The following table presents (i) the aggregate non-audit fees (i.e., fees for audit-related, tax, and other services) billed to the registrant by D&T for the registrant’s fiscal years ended December 31, 2017 and December 31, 2018; and (ii) the aggregate non-audit fees (i.e., fees for audit-related, tax, and other services) billed to the Eaton Vance organization by D&T for the same time periods.


Fiscal Years Ended	12/31/17		12/31/18
Registrant	$	9,144	$	9,144
Eaton Vance⁽¹⁾	$	148,018	$	126,485

⁽¹⁾	The investment adviser to the registrant, as well as any of its affiliates that provide ongoing services to the registrant, are subsidiaries of Eaton Vance Corp.

(h) The registrant’s audit committee has considered whether the provision by the registrant’s principal accountant of non-audit services to the registrant’s investment adviser and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant that were not pre-approved pursuant to Rule 2-01(c)(7)(ii) of Regulation S-X is compatible with maintaining the principal accountant’s independence.

Item 5. Audit Committee of Listed Registrants

The registrant has a separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Securities and Exchange Act of 1934, as amended. George J. Gorman (Chair), Valerie A. Mosley, William H. Park and Scott E. Wennerholm are the members of the registrant’s audit committee.

Item 6. Schedule of Investments

Please see schedule of investments contained in the Report to Stockholders included under Item 1 of this Form N-CSR.

Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies

The Board of Trustees of the Trust has adopted a proxy voting policy and procedure (the “Fund Policy”), pursuant to which the Trustees have delegated proxy voting responsibility to the Fund’s investment adviser and adopted the investment adviser’s proxy voting policies and procedures (the “Policies”) which are described below. The Trustees will review the Fund’s proxy voting records from time to time and will annually consider approving the Policies for the upcoming year. In the event that a conflict of interest arises between the Fund’s shareholders and the investment adviser, the administrator, or any of their affiliates or any affiliate of the Fund, the investment adviser will generally refrain from voting the proxies related to the companies giving rise to such conflict until it consults with the Board’s Special Committee except as contemplated under the Fund Policy. The Board’s Special Committee will instruct the investment adviser on the appropriate course of action.

The Policies are designed to promote accountability of a company’s management to its shareholders and to align the interests of management with those shareholders. An independent proxy voting service (“Agent”), currently Institutional Shareholder Services, Inc., has been retained to assist in the voting of proxies through the provision of vote analysis, implementation and recordkeeping and disclosure services. The investment adviser will generally vote proxies through the Agent. The Agent is required to vote all proxies and/or refer them back

to the investment adviser pursuant to the Policies. It is generally the policy of the investment adviser to vote in accordance with the recommendation of the Agent. The Agent shall refer to the investment adviser proxies relating to mergers and restructurings, and the disposition of assets, termination, liquidation and mergers contained in mutual fund proxies. The investment adviser will normally vote against anti-takeover measures and other proposals designed to limit the ability of shareholders to act on possible transactions, except in the case of closed-end management investment companies. The investment adviser generally supports management on social and environmental proposals. The investment adviser may abstain from voting from time to time where it determines that the costs associated with voting a proxy outweighs the benefits derived from exercising the right to vote or the economic effect on shareholders interests or the value of the portfolio holding is indeterminable or insignificant.

In addition, the investment adviser will monitor situations that may result in a conflict of interest between the Fund’s shareholders and the investment adviser, the administrator, or any of their affiliates or any affiliate of the Fund by maintaining a list of significant existing and prospective corporate clients. The investment adviser’s personnel responsible for reviewing and voting proxies on behalf of the Fund will report any proxy received or expected to be received from a company included on that list to the personnel of the investment adviser identified in the Policies. If such personnel expects to instruct the Agent to vote such proxies in a manner inconsistent with the guidelines of the Policies or the recommendation of the Agent, the personnel will consult with members of senior management of the investment adviser to determine if a material conflict of interests exists. If it is determined that a material conflict does exist, the investment adviser will seek instruction on how to vote from the Special Committee.

Information on how the Fund voted proxies relating to portfolio securities during the most recent 12 month period ended June 30 is available (1) without charge, upon request, by calling 1-800-262-1122, and (2) on the Securities and Exchange Commission’s website at http://www.sec.gov.

Item 8. Portfolio Managers of Closed-End Management Investment Companies

Eaton Vance Management (“EVM” or “Eaton Vance”) is the investment adviser of the Fund. EVM has engaged its affiliate, Parametric Portfolio Associates LLC (“Parametric”), as the sub-adviser of the Fund. Michael A. Allison and Thomas C. Seto comprise the investment team responsible for the overall and day-to-day management of the Fund’s investments.

Mr. Allison is a Vice President of EVM, is a member of EVM’s Equity Strategy Committee and has been a portfolio manager of the Fund since June 2015. Mr. Seto is Head of Investment Management at Parametric’s Seattle Investment Center and has been a portfolio manager of the Fund since April 2005. Messrs. Allison and Seto have managed other Eaton Vance portfolios for more than five years. This information is provided as of the date of filing this report.

The following table shows, as of the Fund’s most recent fiscal year end, the number of accounts each portfolio manager managed in each of the listed categories and the total assets (in millions of dollars) in the accounts managed within each category. The table also shows the number of accounts with respect to which the advisory fee is based on the performance of the account, if any, and the total assets (in millions of dollars) in those accounts.


	Number of All Accounts		Total Assets of All Accounts			Number of Accounts Paying a Performance Fee		Total Assets of Accounts Paying a Performance Fee
Michael A. Allison
Registered Investment Companies		16	$	29,333.2			0	$	0
Other Pooled Investment Vehicles		14	$	19,890.7	⁽¹⁾		0	$	0
Other Accounts		10	$	13.6			0	$	0
Thomas C. Seto
Registered Investment Companies		50	$	28,067.0	⁽²⁾		0	$	0
Other Pooled Investment Vehicles		12	$	3,385.4			0	$	0
Other Accounts		8,103	$	93,828.2	⁽³⁾		0	$	0

⁽¹⁾	Certain of these “Other Pooled Investment Vehicles” invest a substantial portion of their assets either in a registered investment company or in a separate pooled investment vehicle managed by this portfolio manager or another Eaton Vance portfolio manager.

⁽²⁾	This portfolio manager provides investment advice with respect to only a portion of the total assets of certain of these accounts. Only the assets allocated to this portfolio manager as of the Fund’s most recent fiscal year end are reflected in the table.

⁽³⁾	For “Other Accounts” that are part of a wrap account program, the number of accounts is the number of sponsors for which the portfolio manager provides advisory services rather than the number of individual customer accounts within each wrap account program.

The following table shows the dollar range of Fund shares beneficially owned by each portfolio manager as of the Fund’s most recent fiscal year end.


Portfolio Manager		Dollar Range of Equity Securities Beneficially Owned in the Fund
Michael A. Allison		$1 - $10,000
Thomas C. Seto		None

Potential for Conflicts of Interest. It is possible that conflicts of interest may arise in connection with a portfolio manager’s management of the Fund’s investments on the one hand and the investments of other accounts for which a portfolio manager is responsible on the other. For example, a portfolio manager may have conflicts of interest in allocating management time, resources and investment opportunities among the Fund and other accounts he advises. In addition, due to differences in the investment strategies or restrictions between the Fund and the other accounts, the portfolio manager may take action with respect to another account that differs from the action taken with respect to the Fund. In some cases, another account managed by a portfolio manager may compensate the investment adviser based on the performance of the securities held by that account. The existence of such a performance based fee may create additional conflicts of interest for the portfolio manager in the allocation of management time, resources and investment opportunities. Whenever conflicts of interest arise, the portfolio manager will endeavor to exercise his or her discretion in a manner that he believes is equitable to all interested persons. EVM has adopted several policies and procedures designed to address these potential conflicts including a code of ethics and policies that govern the investment adviser’s trading practices, including among other things the aggregation and allocation of trades among clients, brokerage allocations, cross trades and best execution.

Compensation Structure for EVM

Compensation of EVM’s portfolio managers and other investment professionals has the following primary components: (1) a base salary, (2) an annual cash bonus, (3) annual non-cash compensation consisting of options to purchase shares of EVC nonvoting common stock and/or restricted shares of EVC nonvoting common stock that generally are subject to a vesting schedule and (4) (for equity portfolio managers) a

Deferred Alpha Incentive Plan, which pays a deferred cash award tied to future excess returns in certain equity strategy portfolios. EVM’s investment professionals also receive certain retirement, insurance and other benefits that are broadly available to EVM’s employees. Compensation of EVM’s investment professionals is reviewed primarily on an annual basis. Cash bonuses, stock-based compensation awards, and adjustments in base salary are typically paid or put into effect at or shortly after the October 31st fiscal year end of EVC.

Method to Determine Compensation. EVM compensates its portfolio managers based primarily on the scale and complexity of their portfolio responsibilities and the total return performance of managed funds and accounts versus the benchmark(s) stated in the prospectus, as well as an appropriate peer group (as described below). In addition to rankings within peer groups of funds on the basis of absolute performance, consideration may also be given to relative risk-adjusted performance. Risk-adjusted performance measures include, but are not limited to, the Sharpe Ratio (Sharpe Ratio uses standard deviation and excess return to determine reward per unit of risk). Performance is normally based on periods ending on the September 30th preceding fiscal year end. Fund performance is normally evaluated primarily versus peer groups of funds as determined by Lipper Inc. and/or Morningstar, Inc. When a fund’s peer group as determined by Lipper or Morningstar is deemed by EVM’s management not to provide a fair comparison, performance may instead be evaluated primarily against a custom peer group or market index. In evaluating the performance of a fund and its manager, primary emphasis is normally placed on three-year performance, with secondary consideration of performance over longer and shorter periods. For funds that are tax-managed or otherwise have an objective of after-tax returns, performance is measured net of taxes. For other funds, performance is evaluated on a pre-tax basis. For funds with an investment objective other than total return (such as current income), consideration will also be given to the fund’s success in achieving its objective. For managers responsible for multiple funds and accounts, investment performance is evaluated on an aggregate basis, based on averages or weighted averages among managed funds and accounts. Funds and accounts that have performance-based advisory fees are not accorded disproportionate weightings in measuring aggregate portfolio manager performance. A portion of the compensation payable to equity portfolio managers and investment professionals will be determined based on the ability of one or more accounts managed by such manager to achieve a specified target average annual gross return over a three year period in excess of the account benchmark. The cash award to be payable at the end of the three year term will be established at the inception of the term and will be adjusted positively or negatively to the extent that the average annual gross return varies from the specified target return.

The compensation of portfolio managers with other job responsibilities (such as heading an investment group or providing analytical support to other portfolios) includes consideration of the scope of such responsibilities and the managers’ performance in meeting them.

EVM seeks to compensate portfolio managers commensurate with their responsibilities and performance, and competitive with other firms within the investment management industry. EVM participates in investment-industry compensation surveys and utilizes survey data as a factor in determining salary, bonus and stock-based compensation levels for portfolio managers and other investment professionals. Salaries, bonuses and stock-based compensation are also influenced by the operating performance of EVM and its parent company. The overall annual cash bonus pool is generally based on a substantially fixed percentage of pre-bonus adjusted operating income. While the salaries of EVM’s portfolio managers are comparatively fixed, cash bonuses and stock-based compensation may fluctuate significantly from year to year, based on changes in manager performance and other factors as described herein. For a high performing portfolio manager, cash bonuses and stock-based compensation may represent a substantial portion of total compensation.

Compensation Structure for Parametric

Compensation of Parametric portfolio managers and other investment professionals has three primary components: (1) a base salary, (2) an annual cash bonus, and (3) annual equity-based compensation awards that generally are subject to a vesting schedule.

Method to Determine Compensation. Parametric seeks to compensate portfolio managers commensurate with their responsibilities and performance while remaining competitive with other firms within the investment management industry.

Salaries, bonuses and stock-based compensation are also influenced by the operating performance of Parametric and its parent company, EVC. While the salaries of Parametric portfolio managers are comparatively fixed, cash bonuses and stock-based compensation may fluctuate substantially from year to year, based on changes in financial performance and other factors.

Parametric participates in compensation surveys that benchmark salaries, total cash and total compensation against other firms in the industry. This data is reviewed, along with a number of other factors, to ensure that compensation remains competitive with other firms in the industry.

Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers

No such purchases this period.

Item 10. Submission of Matters to a Vote of Security Holders

No material changes.

Item 11. Controls and Procedures

(a) It is the conclusion of the registrant’s principal executive officer and principal financial officer that the effectiveness of the registrant’s current disclosure controls and procedures (such disclosure controls and procedures having been evaluated within 90 days of the date of this filing) provide reasonable assurance that the information required to be disclosed by the registrant has been recorded, processed, summarized and reported within the time period specified in the Commission’s rules and forms and that the information required to be disclosed by the registrant has been accumulated and communicated to the registrant’s principal executive officer and principal financial officer in order to allow timely decisions regarding required disclosure.

(b) There have been no changes in the registrant’s internal controls over financial reporting during the second fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 12. Disclosure of Securities Lending Activities for Closed-End Management Investment Companies

None to report.

Item 13. Exhibits

(a)(1)

Registrant’s Code of Ethics – Not applicable (please see Item 2).

(a)(2)(i)

Treasurer’s Section 302 certification.

(a)(2)(ii)

President’s Section 302 certification.

(b)	Combined Section 906 certification.

(c)	Registrant’s notices to shareholders pursuant to Registrant’s exemptive order granting an exemption from Section 19(b) of the 1940 Act and Rule 19b-1 thereunder regarding distributions paid pursuant to the Registrant’s Managed Distribution Plan.

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Eaton Vance Tax-Managed Buy-Write Income Fund


By:		/s/ Edward J. Perkin
		Edward J. Perkin
		President

Date: February 25, 2019

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


By:		/s/ James F. Kirchner
		James F. Kirchner
		Treasurer

Date: February 25, 2019


By:		/s/ Edward J. Perkin
		Edward J. Perkin
		President

Date: February 25, 2019