Capital Gains Tax Calculator 2026
Estimate the tax on your investment profits. Compare short-term vs. long-term capital gains rates, see if the 3.8% Net Investment Income Tax applies, and calculate your state tax impact.
Investment Details
Tax Information
Your ordinary income (wages, salary) before capital gains
Enter your investment details to estimate capital gains tax
Understanding Capital Gains Tax
When you sell an investment for more than you paid, the profit is a capital gain. The IRS taxes these gains based on how long you held the asset and your total taxable income. Long-term gains (assets held over one year) are taxed at preferential rates of 0%, 15%, or 20%, while short-term gains are taxed as ordinary income at your regular tax bracket.
High-income earners may also owe the 3.8% Net Investment Income Tax (NIIT) on their gains if their modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly).
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