How Short-Term Capital Gains Tax Works When You Sell Investments Quickly

Short-term capital gains are profits you make when you sell an investment you've owned for one year or less, and they're taxed as ordinary income at your regular tax rate

When you buy a stock, bond, mutual fund, or other investment and sell it within 12 months, the profit counts as a short-term capital gain. The IRS taxes this gain at the same rate as your wages or salary — not at the lower capital gains rates that explore to longer-held investments. If you're in the 22% tax bracket for regular income, short-term gains are taxed at 22%. If you're in the 37% bracket, short-term gains are taxed at 37%.

The key date is how long you hold the investment before you sell. The holding period starts the day after you buy and ends the day you sell. If you buy on January 15 and sell on January 15 of the next year, that's exactly one year — the gain is long-term. If you sell on January 14, it's short-term.

Key Takeaways

• Short-term capital gains are taxed at your ordinary income tax rate, which is higher than the long-term rate, and can range from 10% to 37% depending on your income level.
• The holding period is measured from the day after you purchase an investment to the day you sell it, and anything one year or less is short-term.
• You report short-term gains on Schedule D of your tax return, and they add to your other income, which may push you into a higher tax bracket.
• Short-term losses can offset short-term gains dollar-for-dollar, and any remaining losses can reduce other income by up to $3,000 per year.

How the tax rate is determined

Your short-term capital gains rate depends on your tax bracket — the income range you fall into based on your total income for the year. The IRS publishes seven tax brackets annually, and they change slightly each year for inflation. In 2024, the brackets range from 10% at the lowest to 37% at the highest.

When you sell an investment at a profit, that gain is added to your other income — wages, interest, dividends, and anything else you earned that year. If the gain pushes your total income into a higher bracket, part or all of the gain may be taxed at that higher rate. For example, if you earn $50,000 in salary and realize a $20,000 short-term gain, your taxable income becomes $70,000, which may move you into a higher bracket than you'd be in with salary alone.

Reporting short-term gains on your tax return

You report all investment sales — both gains and losses — on Schedule D, a form you attach to your main tax return (Form 1040). Your brokerage or investment firm sends you a Form 1099-B each January showing every transaction you made the previous year, including the purchase price, sale price, and holding period. You use this information to fill out Schedule D.

Schedule D separates short-term transactions from long-term ones. You add up all your short-term gains and all your short-term losses, then calculate the net. If you have a net short-term gain, that amount is added to your other income and taxed at your ordinary rate. If you have a net short-term loss, you can use it to offset other income.

How short-term losses reduce your tax bill

If you sell an investment for less than you paid for it, you have a capital loss. Short-term losses are valuable because they can offset short-term gains dollar-for-dollar. If you realized $5,000 in short-term gains and $3,000 in short-term losses, your net short-term gain is $2,000, and only that $2,000 is taxed.

If your losses exceed your gains, you can use the excess to reduce other income — wages, interest, dividends, and so on — by up to $3,000 per year. Any losses beyond that $3,000 annual limit carry forward to future years, where you can use them again. This is why some investors deliberately sell losing positions late in the year: to offset gains and reduce their tax bill.

The difference between short-term and long-term rates

Long-term capital gains — profits from investments held more than one year — are taxed at preferential rates of 0%, 15%, or 20%, depending on your income level. These rates are significantly lower than ordinary income tax rates. A short-term gain in the 37% bracket is taxed at 37%, while a long-term gain in the same bracket is taxed at only 20%.

This difference creates a strong incentive to hold investments longer. An investor who sells a stock after 11 months might pay 37% tax on the gain, but if they wait one more month, the same gain is taxed at 20%. The longer holding period also qualifies the investment for the preferential long-term rate structure.

Wash sale rules and short-term losses

The IRS has a rule called the wash sale rule that prevents you from claiming a loss on an investment if you buy the same or a substantially identical investment within 30 days before or after the sale. The 30-day window extends from 30 days before the sale to 30 days after it — a total span of 61 days.

If you violate the wash sale rule, the loss is disallowed for the current year, but it's not lost forever. Instead, the loss amount is added to the cost basis of the replacement investment you bought. This defers the loss to a future year when you eventually sell the replacement without buying it again.

State and local taxes on short-term gains

In addition to federal tax, most states tax capital gains as ordinary income. Some states have no capital gains tax at all — including Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming. Other states tax short-term gains at their regular income tax rate, which can range from less than 1% to over 13% depending on the state and your income level.

A few states, including California, have special capital gains taxes that explore to both short-term and long-term gains above a certain threshold. If you live in a state with income tax, check your state's rules, because the combined federal and state tax on a short-term gain can be substantial.

Frequently Asked Questions

Can I avoid short-term capital gains tax by holding an investment for exactly one year?

No. The holding period must be more than one year for long-term treatment. If you buy on January 15 and sell on January 15 of the next year, it's still short-term. You must sell on January 16 or later to may have access to as long-term. The IRS counts the day after purchase as day one.

What if I have short-term losses but no short-term gains?

You can use up to $3,000 of net short-term losses to reduce other income in the current year. Any losses beyond $3,000 carry forward to future years. You don't have to use them all at once — you can spread them across multiple years if you want.

Do I owe short-term capital gains tax if I haven't sold the investment yet?

No. You only owe tax when you actually sell and realize the gain. An investment that has increased in value but you still own is an unrealized gain and is not taxed. Tax is due only in the year you sell.

Is the short-term rate the same for everyone?

No. Your short-term rate depends on your tax bracket, which is based on your total income for the year. Two people with the same short-term gain may pay different amounts of tax if they have different incomes. Higher income means a higher tax bracket and a higher rate on the gain.