PFCUnderstand the tax on an investment sale
2026 capital gains tax calculator
Estimate additional federal tax on one investment sale, including short- or long-term treatment and possible net investment income tax.
2026 tax brackets guide
Read ordinary-income and capital gains brackets and learn how to enter taxable income, basis, and MAGI.
Additional tax is different from total tax or a refund
A capital gains estimate measures the modeled tax added by one sale. A full income-tax estimate also needs the rest of your income, deductions, and credits. A refund estimate additionally compares tax with withholding and payments already made.
Three capital gains planning strategies and their limits
Plan for the correct tax year
These tools use explicitly labeled 2026 U.S. federal rules. They do not automatically switch to a new year and exclude state and local taxes. Use the income-tax calculator for ordinary income, the refund calculator to compare tax with payments, and the estimated-tax calculator to plan installments using a full-return tax estimate. Each tool states its scope before you rely on the result.
More tax tools
2026 income tax calculator
Estimate 2026 federal ordinary income tax using filing status, deductions, credits, and progressive brackets with this free calculator.
2026 tax refund calculator
Estimate your 2026 federal refund or balance due by comparing modeled ordinary income tax with withholding, estimated payments, and entered credits.
2026 estimated tax payment calculator
Plan 2026 federal estimated payments using current-year tax, prior-year safe-harbor rules, withholding, and payments made.