Capital gains taxes are due on April 15 of the year after you sell an investment

When you sell a stock, real estate, cryptocurrency, or other asset for more than you paid for it, the profit is a capital gain. You report this gain on your federal tax return and pay tax on it by the April 15 important date — the same important date as your regular income tax. There is no separate due date for capital gains; they are part of your annual return.

The timing depends on when you sold the asset, not when you received the money. If you sold shares in March 2024, you report that gain on your 2024 tax return, due April 15, 2025. If you sold in January 2025, it goes on your 2025 return, due April 15, 2026.

If you owe estimated taxes because you expect a large capital gain and have not had enough tax withheld during the year, you may need to make quarterly payments before April 15. The IRS calls these estimated tax payments, and they are due on June 17, September 16, and January 15 of the following year, depending on which quarter the gain occurred in.

Key Takeaways

  • Capital gains are reported on your annual tax return and are due by April 15 of the following year, along with your other income taxes.
  • Long-term capital gains (assets held over one year) are taxed at lower rates than short-term gains, which are taxed as ordinary income.
  • If you expect a large capital gain and have not had enough tax withheld, you may owe quarterly estimated tax payments starting in the quarter you sell the asset.
  • You report capital gains on Schedule D of Form 1040, and the IRS matches your report to broker statements they receive.

Long-term versus short-term capital gains have different tax rates and important date

The tax rate you pay depends on how long you held the asset. If you owned it for more than one year before selling, it is a long-term capital gain and is taxed at a lower rate — either 0%, 15%, or 20%, depending on your income. If you owned it for one year or less, it is a short-term capital gain and is taxed as ordinary income at your regular tax bracket, which can be as high as 37%.

Both types are reported on the same April 15 important date. The difference is only in the rate you pay. Because long-term gains are taxed more favorably, many investors time their sales to cross the one-year mark before selling.

The one-year clock starts the day after you buy. If you bought on June 1, 2024, you can sell on June 1, 2025 or later and may have access to for long-term treatment on that sale.

How to report capital gains on your tax return

You report capital gains using Schedule D, which is part of Form 1040. On Schedule D, you list each sale separately: the date you bought, the date you sold, the sale price, and your cost basis (what you paid, including fees). The form calculates your gain or loss for each transaction.

Your broker sends you a Form 1099-B after the year ends, which lists all your sales. The IRS receives a copy of this form, so your numbers must match. If you sold through multiple brokers, you will receive multiple 1099-B forms and must list all of them on Schedule D.

If you have losses, you can use them to offset gains. If losses exceed gains, you can deduct up to $3,000 of the excess loss against your ordinary income in that year. Any remaining loss carries forward to future years.

Quarterly estimated tax payments if you expect a large gain

If you know you will have a large capital gain in a given year and your employer has not withheld enough tax, or you are self-employed, you may owe estimated taxes. These are quarterly payments made directly to the IRS instead of waiting until April 15.

The four quarterly important date are April 15, June 17, September 16, and January 15 of the following year. You pay based on the quarter in which you expect the income. If you sell an asset in February and realize you owe $10,000 in capital gains tax, you can make an estimated payment by April 15 to cover part or all of it.

You are not required to make estimated payments if you will owe less than $1,000 in total tax for the year. If you do not make estimated payments and owe more than $1,000, the IRS may charge you a penalty, though the penalty is usually small if you pay the full amount by April 15.

State and local taxes on capital gains

Most states tax capital gains as part of your regular income tax, using the same rate as ordinary income. A few states — including California, New York, and Illinois — have higher tax rates on capital gains or separate capital gains taxes. Some states, such as Florida and Texas, do not tax capital gains at all.

You report state capital gains on your state tax return, which is usually due on the same date as your federal return or shortly after. Check your state's tax agency website for the exact important date and any special forms required.

If you sold an asset in a state where you do not live but owned property there, you may owe tax to that state as well. This is common for real estate sales. The state where the property is located can tax the gain even if you live elsewhere.

What happens if you miss the April 15 important date

If you do not file your return by April 15, the IRS charges a failure-to-file penalty of 5% of the unpaid tax for each month the return is late, up to 25%. If you owe estimated taxes and do not pay by the quarterly important date, you owe an underpayment penalty calculated based on the IRS interest rate, which changes quarterly.

You can request an automatic extension to October 15 by filing Form 4868 before April 15. This gives you six more months to file your return, but it does not extend the important date to pay. If you owe tax, you should pay by April 15 even if you file an extension, or you will owe penalties and interest on the unpaid amount.

If you realize you made a mistake on a prior year's return and reported a capital gain incorrectly, you can file an amended return using Form 1040-X. There is no time limit to file an amended return that results in a refund, but if you owe additional tax, you should file within three years to avoid penalties.

Frequently Asked Questions

Do I owe capital gains tax if I sold an asset at a loss?

No, you do not owe tax on a loss. You report the loss on Schedule D, and you can use it to offset capital gains from other sales. If your losses exceed your gains, you can deduct up to $3,000 of the excess against your ordinary income in that year.

What if I inherited an asset and then sold it?

Inherited assets receive a "step-up in basis," meaning your cost basis is the asset's value on the date of death, not what the previous owner paid. If you sell shortly after inheriting, you may owe little or no capital gains tax. You still report the sale on Schedule D using the stepped-up basis as your cost.

Do I owe capital gains tax on cryptocurrency?

Yes. The IRS treats cryptocurrency as property, not currency. When you sell or trade crypto for a profit, that profit is a capital gain. You report it on Schedule D just like any other asset sale. If you received crypto as payment for work, that is ordinary income, not a capital gain.

Can I avoid capital gains tax by donating an appreciated asset to charity?

Yes. If you donate an appreciated asset directly to a may have access to charity, you avoid the capital gains tax on the appreciation and can deduct the full fair market value as a charitable contribution. You must itemize deductions on Schedule A for this to benefit you.

What if I sold a home — do I owe capital gains tax?

If you lived in the home as your primary residence for at least two of the last five years, you can exclude up to $250,000 of the gain from tax (or $500,000 if married filing jointly). You still report the sale on Schedule D, but you claim the exclusion there. Any gain above the exclusion amount is taxable.