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Capital Gains Tax Calculator

Calculate taxes on investment profits and compare short-term vs long-term rates.

Purchase price (cost basis)

What you paid for the investment

Sale price

What you're selling it for

Holding period

Filing status

Annual taxable income

Before adding capital gains

Capital Gains Tax

Capital gains tax applies when you sell an investment for more than you paid. The rate depends on how long you held the asset: short-term gains (≤1 year) are taxed as ordinary income, while long-term gains (>1 year) receive preferential lower rates.

2024 Long-term Rates (Single)

$0 - $47,025 0%

$47,026 - $518,900 15%

$518,901+ 20%

Plus 3.8% NIIT for income over $200,000 (single)

How to Use

1. Enter your cost basis (original purchase price)
2. Enter your sale price
3. Select your holding period
4. Enter your filing status and income
5. See your tax liability and compare options

FAQ

What is cost basis?

Cost basis is what you originally paid for an investment, including commissions. If you received shares through inheritance or as a gift, special rules apply.

What about state taxes?

Most states also tax capital gains—often as ordinary income. States like CA can add 13%+ to your rate. Some states (FL, TX, WA) have no income tax.

Can I offset gains with losses?

Yes! Capital losses offset gains dollar-for-dollar. If losses exceed gains, you can deduct up to $3,000/year from ordinary income and carry forward the rest.

Calculator Limitations

• Federal taxes only (excludes state taxes)
• Does not include 3.8% NIIT surtax
• Simplified rate calculation
• Does not account for AMT
• Consult a tax professional for advice

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