Short-term capital gains are taxed at your ordinary income tax rate, not at the lower capital gains rate

When you sell an investment you have owned for one year or less, the profit counts as short-term capital gain. The IRS taxes this profit using the same tax brackets and rates as your wages, salary, and other ordinary income. If you are in the 24% tax bracket for ordinary income, your short-term capital gains are also taxed at 24%.

Long-term capital gains — profits from investments held longer than one year — get preferential rates of 0%, 15%, or 20% depending on your income level. Short-term gains receive no such break. This is why the holding period matters so much to investors and why many people time their sales to cross the one-year mark.

The tax is calculated on the profit only, not the full sale price. If you bought a stock for $5,000 and sold it for $7,000 after eight months, your short-term capital gain is $2,000. That $2,000 gets added to your other income for the year and taxed at your marginal rate.

Key Takeaways

  • Short-term capital gains use the same tax rates as your wages and salary, ranging from 10% to 37% depending on your income bracket.
  • The one-year holding period is the dividing line: sell before one year passes and you pay ordinary income tax; sell after and you may pay the lower long-term rate.
  • Short-term gains are added to your total income for the year, which can push you into a higher tax bracket and affect other tax benefits.
  • Trading frequently or holding investments for short periods creates a higher tax bill than a buy-and-hold strategy with the same dollar gains.

How short-term gains affect your total tax bill

Short-term capital gains do not sit in a separate tax calculation. They are stacked on top of your other income — wages, self-employment earnings, interest, dividends, and everything else — and the total is what determines your tax bracket for the year.

This stacking effect can push you into a higher bracket. Suppose you earn $50,000 in salary and have a $15,000 short-term capital gain. Your taxable income is now $65,000, which may move you from the 12% bracket into the 22% bracket. Both your salary and your capital gain are taxed at the higher rate on the income that falls in that bracket.

Short-term gains can also reduce or eliminate tax credits and deductions you might otherwise claim. Some credits phase out as income rises. If a short-term gain pushes your income over a threshold, you may lose part of a credit or deduction you were counting on.

The difference between holding periods and tax rates

The IRS uses a simple rule: if you owned the investment for more than one year before selling, it is long-term. One year or less is short-term. The date you bought and the date you sold are what matter, not how many trading days passed or how long you intended to hold it.

Long-term capital gains rates are 0%, 15%, or 20% for most taxpayers. Short-term rates match your ordinary income bracket, which ranges from 10% to 37%. For someone in the 35% or 37% bracket, the difference between short-term and long-term treatment is substantial — a 15% to 22% difference in tax owed on the same gain.

This is why many investors watch the calendar closely as their holdings approach the one-year mark. Waiting a few weeks or months to sell can mean a significantly lower tax bill.

When you must report short-term gains

Your broker sends you a Form 1099-B showing all sales during the year, including short-term gains. You report these on Schedule D (Capital Gains and Losses) when you file your tax return. The IRS matches your return to the 1099-B, so underreporting or omitting gains creates a mismatch that triggers a notice.

If you sold investments through multiple brokers or accounts, each one sends a separate 1099-B. You must combine all short-term gains and losses on Schedule D. You can offset short-term gains with short-term losses from other sales, which reduces your taxable gain.

The deadline to report is the same as your tax return deadline — usually April 15 of the following year, or October 15 if you file an extension.

How losses offset short-term gains

If you sold some investments at a loss during the year, you can use those losses to reduce your short-term gains. If you have $8,000 in short-term gains and $3,000 in short-term losses, your net short-term gain is $5,000, which is what gets added to your income.

You can also use short-term losses to offset long-term gains, and vice versa. The IRS requires you to net all capital gains and losses together on Schedule D. Only the final net amount — gain or loss — flows into your taxable income calculation.

If your losses exceed your gains in a year, you can deduct up to $3,000 of the net loss against your ordinary income. Any loss beyond $3,000 carries forward to future years, where you can use it to offset future gains or take another $3,000 deduction against ordinary income.

Frequently Asked Questions

Do I pay short-term capital gains tax if I sell at a loss?

No. A loss means you sold for less than you paid, so there is no gain to tax. You report the loss on Schedule D, and it reduces any other gains you have that year. If losses exceed gains, you can deduct up to $3,000 against your salary and other ordinary income.

What if I day trade and have hundreds of short-term transactions?

You report the net result on Schedule D — the total of all gains minus all losses. Each transaction does not get its own line; you combine them. If you are a professional trader, you may be able to elect mark-to-market accounting, which changes how gains are taxed, but this requires IRS approval and specific criteria.

Can I avoid short-term capital gains tax by holding the investment just over one year?

Yes. If you sell after owning the investment for more than one year, the gain qualifies for long-term rates, which are lower. The IRS counts the holding period from the purchase date to the sale date. Waiting a few weeks or months can reduce your tax bill significantly.

Are short-term capital gains subject to the net investment income tax?

Yes, if your modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly). The net investment income tax adds 3.8% to capital gains, dividends, and other investment income above those thresholds. Short-term gains count as net investment income.

How do I report short-term gains if I use a robo-advisor or mutual fund?

Your fund company or robo-advisor sends you a 1099-B or 1099-DIV showing gains and losses. You report these on Schedule D just as you would for individual stock sales. Mutual funds sometimes distribute short-term gains to shareholders even if you held the fund for years — those distributions are taxed as short-term gains in the year you receive them.