Capital Gains Tax Calculator
Estimate federal capital gains tax for short-term and long-term gains.
Short-term gains are treated like ordinary income, while long-term gains use capital gains rate thresholds.
Estimated capital gains tax$2,460
Short-term gains tax$660
Long-term gains tax$1,800
| Short-term gains | $3,000 | Taxed like ordinary income |
|---|---|---|
| Long-term gains | $12,000 | Estimated with long-term capital gains brackets |
Assumptions
- Does not include NIIT, state tax, loss carryovers, collectibles, or qualified small business stock rules.
How this calculator works
Formula used
Short-term gains use ordinary rates; long-term gains use 0%, 15%, or 20% brackets based on income and filing status.
Example calculation
A long-term gain may fall partly in the 0% bracket and partly in the 15% bracket depending on ordinary income.
Capital Gains Tax Calculator FAQ
Are these tax calculators official IRS tools?
No. These calculators are educational estimators for U.S. planning. They do not replace IRS forms, payroll software, a CPA, or legal advice.
Why might my actual paycheck or tax bill be different?
Actual results can change because of credits, pre-tax benefits, local taxes, payroll timing, itemized deductions, employer setup, and updated federal or state rules.