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🧾 Capital Gains Tax Calculator

A capital gains tax calculator estimates the federal tax owed when you sell stocks, crypto, property, or other assets. Enter your purchase price, sale price, holding period, and income to see whether your gain is short or long-term, your tax rate, and your net profit after tax.

🇺🇸 Calculating for United States
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Sale details

Estimated federal capital gains tax (long-term)

$2,250.00

Held over 12 months — taxed at the 15% long-term rate

Capital gain

$15,000.00

Tax rate applied

15%

Net profit after tax

$12,750.00

Federal estimate only (2025 brackets). State capital gains taxes, the 3.8% Net Investment Income Tax (income above $200k single / $250k married), and wash-sale rules are not included. Consult a tax professional.

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Frequently asked questions

What is the difference between short-term and long-term capital gains?
Assets held over 12 months qualify for long-term rates of 0%, 15%, or 20% depending on income. Assets held 12 months or less are short-term gains taxed as ordinary income — up to 37% federally. Holding past the one-year mark can cut your tax bill roughly in half.
What are the 2025 long-term capital gains brackets?
For single filers: 0% up to $48,350 taxable income, 15% up to $533,400, and 20% above. Married filing jointly: 0% up to $96,700, 15% up to $600,050, 20% above. High earners may also owe the 3.8% Net Investment Income Tax.
How can I reduce capital gains tax?
Hold assets over one year for long-term rates; harvest losses to offset gains (plus $3,000 of ordinary income annually); use tax-advantaged accounts; time sales for lower-income years; and for real estate, the primary-residence exclusion shelters $250k ($500k married) of gain.
Do I pay capital gains tax on my home sale?
Usually not — the Section 121 exclusion lets you exclude up to $250,000 of gain ($500,000 married filing jointly) on a primary residence you owned and lived in for 2 of the last 5 years. Gains beyond the exclusion are taxed at long-term rates.

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Disclaimer: This calculator is for informational and educational purposes only. Results are estimates and not financial advice. Consult a licensed financial advisor before making financial decisions.