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USA Capital Gains Tax Calculator

USA Tools Free Updated 25 Sep 2026
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ⓘ About this tool 🔄 Last updated 25 Sep 2026 ✓ Reviewed by TopToolAI Team

Enter your purchase price, sale price and how long you held the asset to estimate short-term or long-term capital gains tax.

How to use USA Capital Gains Tax Calculator

Step-by-step guide to the boxes below. Open it only if you need help.

  1. 1
    Capital gain amount ($) Number

    Your profit, not the sale price. It is the sale price minus what you paid.

    Example: 10000

  2. 2
    Holding period Choose one

    Choose long-term if you held the asset for over a year. Long-term gains are taxed lower.

    Choose one: Long-term (held over 1 year)Short-term (held 1 year or less)

  3. 3
    Filing status Choose one

    Single, married filing jointly or head of household. It sets where the 0%, 15% and 20% rates start.

    Choose one: SingleMarried filing jointlyHead of household

  4. 4
    Your other taxable income ($) Number

    Your taxable income before this gain, after deductions. The gain is stacked on top of it to find your rate.

    Example: 60000

  5. 5
    Press “Calculate”

    Click the button under the boxes. If something is missing or not valid, a short message tells you which box to fix.

  6. 6
    Read your result

    You see the estimated capital gains tax. Change any box and try again to compare different numbers.

USA Capital Gains Tax Calculator FAQs

What's the difference between short-term and long-term?
Assets held under a year are taxed as ordinary income; over a year qualifies for lower long-term rates.
Does this include state tax?
No, it estimates federal capital gains tax only — state rules vary.
What is the difference between short-term and long-term capital gains?
Short-term gains come from assets held one year or less and are taxed as ordinary income. Long-term gains, on assets held longer, usually get lower rates.
How is capital gain calculated?
Sale price minus your cost basis, which is usually what you paid plus certain costs.

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