Capital Gains Tax Calculator
Calculate taxes on your investment profits. Supports both short-term and long-term capital gains rates for the 2025 tax year.
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How Capital Gains are Taxed
The tax rate on your investment gains depends on how long you held the asset before selling it.
Short-Term vs. Long-Term
- Short-Term Capital Gains: Assets held for one year or less. These are taxed as ordinary income at your regular tax bracket (up to 37%).
- Long-Term Capital Gains: Assets held for more than one year. These benefit from lower tax rates of 0%, 15%, or 20%, depending on your income.
Net Investment Income Tax (NIIT)
High earners may also be subject to an additional 3.8% Net Investment Income Tax if their modified adjusted gross income exceeds certain thresholds ($200,000 for singles, $250,000 for married couples).