Tax & Paycheck (US)

Capital Gains Tax Calculator

Estimate your federal tax on investment gains.

Enter your capital gain amount and select whether it's a short-term or long-term gain to estimate your federal capital gains tax. Long-term gains (assets held over 1 year) are taxed at preferential rates; short-term gains are taxed as ordinary income.

Enter a valid gain amount.

Estimated Capital Gains Tax

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How to Use This Tool

  1. Enter your capital gain amount.
  2. Select whether it's a long-term or short-term gain, and your applicable bracket for long-term gains.
  3. Click Calculate Tax for your estimated federal tax owed.

Long-Term vs. Short-Term Capital Gains

The US tax code treats capital gains differently based on how long you held the asset before selling:

Which Long-Term Bracket Applies to You?

Your long-term capital gains rate depends on your total taxable income for the year (including the gain itself), not just the gain amount alone. Lower-income taxpayers may qualify for the 0% rate, middle-income taxpayers typically fall into the 15% bracket, and only very high earners reach the 20% bracket. Check current IRS thresholds for your filing status to determine your exact bracket.

Why Holding Period Matters So Much

The tax difference between short-term and long-term treatment can be substantial — for a high earner, the difference between a 37% short-term rate and a 20% long-term rate on a large gain is significant, which is why many investors deliberately hold appreciated assets past the one-year mark before selling when practical.

Frequently Asked Questions

How do I know which long-term capital gains bracket I'm in?

Your bracket depends on your total taxable income for the year, including the gain. Check the current IRS capital gains rate thresholds for your filing status, or consult a tax professional for your specific situation.

Are there any exceptions to these capital gains rates?

Yes — certain assets like collectibles, and some types of qualified small business stock, have different capital gains tax treatment. This calculator covers the standard rates for typical investment assets like stocks and funds.

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This calculator is provided for general informational and estimation purposes only. Results should not be treated as professional financial, tax, legal, medical, or engineering advice. Always verify critical calculations with a qualified professional or official source before making decisions.