📈 Capital Gains Tax Calculator 2026

Enter your purchase price, sale price, and holding period to see your exact capital gains tax — including federal rate, state rate, NIIT surcharge, and true net proceeds.

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Results
Capital Gains Tax
Cost Basis (adj.)
Capital Gain / Loss
Federal CGT Rate
Federal CGT
State Tax (on gain)
Net Investment Income Tax (3.8%)
Total Tax on Gain
Net Proceeds After Tax
LTCG Rates 2026: 0% (≤$47k single), 15% ($47k–$519k), 20% (>$519k)
NIIT: 3.8% on investment income if AGI > $200k (single) / $250k (MFJ)

Holding an asset for more than one year converts ordinary income rates (up to 37%) to long-term capital gains rates (0%, 15%, or 20%). For most taxpayers in the 22–24% federal bracket, long-term gains are taxed at only 15% — a 7–9% tax rate advantage that makes the holding period decision enormously valuable.