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Long-Term Capital Gains Tax Calculator (2025)

Calculate your federal tax on long-term capital gains at preferential 0%, 15%, or 20% rates plus NIIT. See how gains are allocated across tax brackets.

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$

Total Tax

$7,500

$7,500

Total Tax

LTCG Tax

$7,500

NIIT

$0

Effective Rate

15.00%

Summary

On $50,000 in long-term capital gains with $75,000 other income, your total tax is $7,500 for 2025.

Long-term capital gains (held > 1 year) benefit from preferential tax rates of 0%, 15%, or 20%.

Bracket stacking: your ordinary income fills lower brackets first, then LTCG is taxed on top at its own rates.

You are below the NIIT threshold -- no 3.8% surtax applies to your investment income.

15% bracket: $7,500

LTCG Bracket Allocation

1 rows

RateAmount in BracketTax
15%$50,000$7,500

Estimates federal tax on long-term capital gains only. Does not include state/local taxes, AMT, or credits. Not tax advice.

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