Capital Gains Tax Calculator
Estimate US federal capital gains tax on a sale.
Long-term tax owed
$750
Profit $5,000 · holding 18 months
After-tax profit
$4,250
Short vs long gap
$350
Both scenarios
- If short-term (≤ 12 months): $1,100 taxed at your ordinary rate.
- If long-term (> 12 months): $750 taxed at 0/15/20%.
Uses 2025 federal brackets and long-term thresholds. State tax and NIIT are not included.
About
Enter your purchase price, sale price, holding period, and income bracket. The calculator picks short-term (taxed as income) or long-term (preferential rate) and shows the federal tax. State tax not included.
How to use
- Enter cost basis and sale price.
- Pick how long you held the asset.
- Pick your income bracket.
- See estimated federal tax.
FAQ
What's the long-term rate?+
0%, 15%, or 20% depending on taxable income. Most middle-income Americans pay 15%. The 20% kicks in around $500k single, $600k joint.
What about state tax?+
Varies. CA taxes capital gains as ordinary income (up to 13.3%). FL, TX, WA have no state income tax. Add separately.