Capital gains distributions: how funds tax you

You didn't sell a single share all year, yet your 1099-DIV shows a few hundred dollars of capital gains. That's a capital gains distribution: your mutual fund sold holdings at a profit, and the tax code makes it pass those gains to the shareholders. In a taxable account you owe tax on them, even if you reinvested every cent and even if the fund lost money for you.

Here is how these distributions are taxed, what they do to your cost basis, the "buying the distribution" trap, and why ETFs rarely pay them.

In short

• Capital gain distributions (Form 1099-DIV, box 2a) are taxed as long-term capital gains no matter how long you owned the fund.
• Distributions of a fund's short-term gains are not capital gains to you: they are reported as ordinary dividends.
• Reinvested distributions are still taxable, and each reinvestment is a new lot with its own basis.
• Buying a fund just before a distribution gives you a tax bill on gains you never earned.
• In 2025, 7% of ETFs paid a capital gain, compared with 52% of mutual funds (State Street, Morningstar data).

Why funds distribute gains at all

A mutual fund is a regulated investment company. When its manager sells stocks at a profit — to rebalance, to follow the index, or to raise cash for shareholders who are redeeming — the fund realizes capital gains. Rather than pay corporate tax on them, funds distribute their net gains to shareholders, who report them on their own returns.

The key point: the gain belongs to the fund's holdings, not to your purchase. A fund can distribute gains in a year when its price fell, and a shareholder who bought last month receives the same per-share distribution as one who has held for a decade.

How each type of distribution is taxed

IRS Publication 550 is direct about it: report capital gain distributions "as long-term capital gains, regardless of how long you owned your shares." Not everything a fund pays out gets that treatment, though.

What the fund pays	Where it appears	How it's taxed
Distribution of net long-term gains	1099-DIV, box 2a	Long-term rates: 0%, 15% or 20%
Part from real estate or collectibles	Box 2b (unrecaptured §1250), box 2d (collectibles)	Up to 25% and 28%
Distribution of net short-term gains	Included in box 1a (ordinary dividends)	Ordinary income rates, 10% to 37%
Gains the fund kept and paid tax on	Form 2439, box 1a	Long-term; you claim a credit for the tax the fund paid and raise your basis
Dividends from the fund's stocks	Box 1a, qualified part in box 1b	Qualified: long-term rates; the rest ordinary

For 2026, IRS Revenue Procedure 2025-32 sets the long-term rate thresholds, based on total taxable income:

Filing status	0% up to	15% up to	20% above
Single	$49,450	$545,500	$545,500
Married filing jointly	$98,900	$613,700	$613,700
Married filing separately	$49,450	$306,850	$306,850
Head of household	$66,200	$579,600	$579,600

On top of that, the 3.8% net investment income tax applies once modified AGI exceeds $200,000 (single or head of household) or $250,000 (married filing jointly). The thresholds and the treatment of qualified dividends are covered in more detail in our guide to qualified vs ordinary dividends.

Buying the distribution: a worked example

Reinvesting doesn't avoid the bill. Publication 550 says reinvested dividends must still be reported as income. What reinvesting does is buy new shares: $800 ÷ $46 = 17.39 shares, a separate lot with a basis of $800. Your total basis becomes $10,800 for 217.39 shares worth $10,000. When you eventually sell, the gain is $800 smaller, so the tax isn't paid twice — it's paid early.

The fix is timing. Before putting a large sum into a fund late in the year in a taxable account, check the fund's announced distribution dates and estimates, and consider buying after the ex-date. Inside an IRA or 401(k) none of this matters, because distributions aren't taxed there.

Two rules that catch people when they sell

The six-month rule. If you sell mutual fund shares held six months or less at a loss, the loss is treated as long-term up to the capital gain distributions you received on them; only the rest is short-term (Publication 550). Continuing the example: you sell the 200 original shares on March 1 at $45. Proceeds $9,000, basis $10,000, loss $1,000. Because you held them less than six months and received $600 of capital gain distributions, $600 of the loss is long-term and $400 short-term. The rule stops investors from collecting a long-term gain and immediately harvesting a short-term loss against ordinary-rate income.

Cost basis. Mutual fund shares can use the average basis method as well as FIFO or specific identification, and brokers report the basis of covered shares on Form 1099-B. If you've reinvested for years, every reinvestment is part of that basis — leave it out and you'll overstate your gain. Our article on cost basis methods compares FIFO, specific identification and average cost.

Why ETFs pay far fewer capital gains

According to State Street Global Advisors, citing Morningstar data as of December 31, 2025, only 7% of ETFs paid a capital gain in 2025 versus 52% of mutual funds. Among equity funds the gap was 6% versus 57%; among bond funds, 23% versus 37%.

The difference is mostly structural. When mutual fund investors redeem, the fund often has to sell holdings for cash and distribute any resulting gains to the shareholders who stayed. ETF shares mostly trade between investors on the exchange, and when large redemptions happen, authorized participants typically take securities "in kind" rather than cash, so the fund doesn't have to sell.

None of this makes one fund better than another on its own — costs, strategy and what you already hold matter more. It means that where you hold a fund matters: a high-turnover mutual fund costs less in tax inside an IRA than in a brokerage account, a point we expand on in Roth IRA vs taxable account.

Keeping track of what you received

A distribution shows up as income on your statement, a reinvestment as a purchase, and the fund's price drops on the ex-date. Looking only at price, a year with large distributions can look like a loss. GetHossa's dividend tracker records each payout your broker booked, and the realized gains view lists closed positions with their FIFO basis and holding period, so you can see what you received and what you realized in one place. Your 1099-DIV and 1099-B remain the documents for your return.