Eaton Vance Tax-Managed Buy-Write Income Fund is a diversified closed-end fund designed to deliver current income and gains, with a secondary objective of capital appreciation. The fund primarily owns a diversified portfolio of U.S. large-cap common stocks and systematically sells covered call options on one or more U.S. equity indices over a substantial portion of the portfolio to generate option premium income. It evaluates returns on an after-tax basis, seeking to minimize and defer federal income taxes for shareholders through tax-managed techniques and a managed distribution policy. The strategy typically emphasizes high-quality, liquid equities—often with notable exposure to information technology and other major sectors—while the buy-write overlay can moderate volatility and trade some upside participation for steadier cash flows. Distributions may include net investment income, realized gains, and return of capital, reflecting the fund’s income-focused design. By combining equity exposure with an option-writing program and explicit tax management, Eaton Vance Tax-Managed Buy-Write Income Fund occupies a specialized role for investors prioritizing tax-efficient equity income within the closed-end fund market.