Capital gain distributions are payments a mutual fund or ETF makes to its shareholders after selling holdings at a profit, and they are taxable income the year you receive them even if you reinvest every dollar. For 2026, the long-term portion is taxed at 0%, 15%, or 20% depending on your income, and the short-term portion is taxed at your ordinary rate, which can reach 37%.1Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
Where the Distribution Comes From
When a fund manager sells a stock or bond for more than the fund paid, the fund realizes a capital gain. Gains and losses across the fund’s fiscal year get netted, and net gains have to be pushed out to shareholders to preserve the fund’s pass-through tax treatment. Between corporate tax on retained gains and a 4% excise tax on undistributed amounts, funds have every reason to distribute nearly everything they realize.2Office of the Law Revision Counsel. 26 USC 4982 – Excise Tax on Undistributed Income of Regulated Investment Companies
This is why a distribution can hit you in a year the fund lost money. If the manager sold older holdings that had appreciated, the gain still gets passed through, no matter what the fund’s overall performance looked like.
How the Tax Rate Is Set
The rate turns on how long the fund held the underlying asset before selling it, not how long you have owned your shares in the fund.3Office of the Law Revision Counsel. 26 USC 852 – Taxation of Regulated Investment Companies and Their Shareholders
Short-Term vs. Long-Term
If the fund owned the asset for one year or less, the resulting distribution is short-term and taxed at your ordinary income rate. It appears in Box 1a of your Form 1099-DIV, grouped with ordinary dividends. If the fund held the asset for more than a year, the distribution is long-term and shows up in Box 2a, where it qualifies for the preferential rates.4Internal Revenue Service. Instructions for Form 1099-DIV
2026 Long-Term Rate Thresholds
For tax year 2026, the rate on long-term capital gain distributions depends on your total taxable income:5Internal Revenue Service. Revenue Procedure 2025-32 – 2026 Adjusted Items
- 0% for taxable income up to $49,450 single, $98,900 married filing jointly, $66,200 head of household, or $49,450 married filing separately.
- 15% above those figures up to $545,500 single, $613,700 married filing jointly, $579,600 head of household, or $306,850 married filing separately.
- 20% for taxable income above the 15% ceiling for your filing status.
The 25% and 28% Categories
Two narrower categories can appear on a 1099-DIV. Gain attributable to previously deducted depreciation on real property is taxed at a maximum of 25%. Gains from collectibles such as coins or art, and certain qualified small business stock, are taxed at a maximum of 28%.6Internal Revenue Service. Topic No. 409, Capital Gains and Losses These come up mostly with real estate or specialty funds, not a typical stock index fund.
The 3.8% Surtax on Top
Capital gain distributions also count toward the Net Investment Income Tax. The 3.8% surtax applies to the lesser of your net investment income or the amount your modified adjusted gross income exceeds $200,000 single, $250,000 married filing jointly, or $125,000 married filing separately.7Internal Revenue Service. Topic No. 559, Net Investment Income Tax Those thresholds are not indexed, so more taxpayers meet them each year. A high earner with a large year-end distribution can effectively pay 23.8% on the long-term portion.
When Distributions Are Paid, and the Year-End Trap
Most funds pay once a year, usually in November or December. The fund sets a record date; shareholders on that date receive the distribution. The ex-dividend date is generally on or one business day before the record date, and shares purchased on or after the ex-dividend date do not receive the pending payment.8U.S. Securities and Exchange Commission. Ex-Dividend Dates: When Are You Entitled to Stock and Cash Dividends
On the ex-dividend date, the fund’s net asset value drops by roughly the distribution amount. Buying right before that date is called “buying the gain.” Put $10,000 into a fund the day before it goes ex-dividend on a $1,000 per-share distribution, and you’ll receive $1,000 of taxable income while your shares are now worth $9,000. Nothing has been gained economically; part of your investment has just been converted into a tax bill. Fund companies post estimated distribution dates and amounts in advance, so it pays to check before a large purchase late in the year.
December Declarations, January Cash
Funds often declare a distribution in October, November, or December with a record date in one of those months, then pay the cash in January. The IRS still treats the distribution as received on December 31 of the declaration year.4Internal Revenue Service. Instructions for Form 1099-DIV Your 1099-DIV reports it in the earlier year, which catches people who assume a January deposit belongs on the next return.
Reinvestment and Your Cost Basis
What you do with a distribution changes your cost basis, which determines your taxable gain when you eventually sell.
Take the distribution in cash and the basis of your existing shares does not change. Reinvest it (the default at most brokerages) and the fund uses the money to buy additional shares, each reinvestment treated as a new purchase with its own basis equal to the reinvested amount.9Internal Revenue Service. Mutual Funds (Costs, Distributions, Etc.) 1 Tracking those reinvestments matters. If you don’t, you can end up paying tax on the same money twice: once when the distribution was paid and again when you sell.
Wash Sale Risk Near a Distribution
Selling fund shares at a loss to harvest a tax benefit can be undone if automatic reinvestment within 30 days before or after that sale buys back substantially identical shares. The IRS disallows the loss under the wash sale rule. The disallowed loss is not lost permanently; it gets added to the basis of the replacement shares. But the tax break you were counting on for the current year is gone. If you’re planning a loss sale near a distribution date, turn off automatic reinvestment first.
Offsetting Distributions With Losses
Capital losses you realize elsewhere offset capital gain distributions dollar for dollar. Short-term losses offset short-term gains first, long-term losses offset long-term gains first, and anything left over crosses to the other category.6Internal Revenue Service. Topic No. 409, Capital Gains and Losses
If total losses exceed total gains for the year, you can deduct up to $3,000 of the excess against ordinary income, or $1,500 if married filing separately. Losses beyond that carry forward indefinitely.10Office of the Law Revision Counsel. 26 USC 1211 – Limitation on Capital Losses Late-year loss harvesting is a practical tool for managing a large December distribution, subject to the wash sale caution above.
Funds Held Inside Retirement Accounts
Capital gain distributions inside a traditional IRA, 401(k), 403(b), or similar tax-deferred account do not trigger any immediate tax. The gains compound inside the account, and you pay ordinary income tax on withdrawals in retirement regardless of whether the underlying distributions were short-term or long-term.11eCFR. 26 CFR 1.1411-8 – Exception for Distributions From Qualified Plans Qualified withdrawals from a Roth IRA or Roth 401(k) come out entirely tax-free, so the distributions effectively escape taxation. High-turnover active funds usually fit better in these accounts than in a taxable brokerage account.
State Income Tax
Most states also tax capital gain distributions, typically as ordinary income, with top rates ranging from under 3% to nearly 11%. A few states have no income tax at all, so distributions escape state taxation entirely. A small number of states offer reduced rates or partial exclusions for long-term gains. Check your state’s treatment before assuming the federal number is your full tax cost.
Undistributed Gains on Form 2439
Occasionally a fund keeps some of its long-term gains rather than paying them out. The fund pays corporate tax on those retained gains and sends shareholders Form 2439, which reports your share of the undistributed gain and the tax the fund already paid on your behalf.12Internal Revenue Service. Form 2439 – Notice to Shareholder of Undistributed Long-Term Capital Gains You report the full gain on Schedule D, claim a credit or refund for the tax the fund paid, and increase your basis in the fund by the difference. The situation is uncommon with retail mutual funds, but it does happen.