What Are Short-Term Capital Gains?
Short-term capital gains are profits from selling assets held for one year or less. Unlike long-term gains, short-term gains do not receive preferential tax treatment. They are added to your ordinary income and taxed at your marginal income tax rate, which can be as high as 37% for federal taxes.
This higher tax rate makes a strong case for holding investments longer than one year when possible. The difference between short-term (up to 37%) and long-term (0-20%) rates can save thousands of dollars on the same gain.
!
Short-Term Rates Are Significantly Higher
A $15,000 gain taxed at 24% (short-term) costs $3,600 in federal taxes. The same gain held for over one year and taxed at 15% (long-term) costs only $2,250. That is $1,350 in savings just for holding 12+ months.
2026 Federal Income Tax Brackets (Short-Term Rates)
| Taxable Income | Tax Rate | Tax on $15K Gain | Notes |
|---|---|---|---|
| $0 - $11,600 | 10% | $1,500 | Lowest bracket |
| $11,601 - $47,150 | 12% | $1,800 | Most common for low income |
| $47,151 - $100,525 | 22% | $3,300 | Middle income |
| $100,526 - $191,950 | 24% | $3,600 | Upper middle income |
| $191,951 - $243,725 | 32% | $4,800 | High income |
| $243,726 - $609,350 | 35% | $5,250 | Very high income |
| Over $609,350 | 37% | $5,550 | Top bracket |
Short-Term Capital Gains Tax
Tax = Short-Term Gain × Marginal Tax Rate
Where:
Short-Term Gain = Profit from assets held under 1 year
Marginal Tax Rate = Your highest federal income tax bracket
Short-Term Gains Tax Calculation
Given
Gain
$15,000
Other Income
$75,000
Filing Status
Single
State Rate
5%
Calculation Steps
- 1Total taxable income = $75,000 + $15,000 = $90,000
- 2Federal bracket at $90,000 (single) = 22%
- 3Federal tax = $15,000 × 22% = $3,300
- 4State tax = $15,000 × 5% = $750
- 5NIIT: income below $200K threshold, so $0
- 6Total tax = $3,300 + $750 = $4,050
- 7After-tax gain = $15,000 - $4,050 = $10,950
Result
The $15,000 short-term gain incurs $4,050 in total taxes (27% effective rate), leaving $10,950 after tax. Holding for over one year would save approximately $1,050 in federal taxes.
Minimizing Short-Term Capital Gains Tax
1
Extend Holding Period When Possible
If you are near the 1-year mark, consider holding slightly longer to qualify for long-term rates. The tax savings are often worth the additional holding risk.
2
Offset with Capital Losses
Short-term losses offset short-term gains first. Harvest losses from other positions to reduce your taxable short-term gains.
3
Trade in Tax-Advantaged Accounts
Active trading generates short-term gains. Consider doing active trading in an IRA or 401(k) where gains are tax-deferred.
4
Time Your Sales Strategically
If possible, spread gains across tax years to stay in lower brackets. Selling half a position in December and half in January splits the gain across two years.
- Day traders face the highest tax burden because all gains are short-term
- The 3.8% NIIT applies to investment income when MAGI exceeds $200K (single) or $250K (married)
- Qualified small business stock (QSBS) may exclude up to $10 million in gains if held 5+ years
- Installment sales can spread gain recognition across multiple tax years
- Consider the impact of short-term gains on your adjusted gross income, which affects other deductions and credits