Capital Gains Tax Calculator
Computes capital gains tax owed on the sale of investments by holding period.

What Capital Gains Tax Calculator does
A capital gains tax calculator that estimates the tax owed when selling investments for a profit. Users enter the purchase price, selling price, and holding period to determine whether gains are short-term or long-term, then the tool applies current tax rates to compute the estimated liability. The calculator supports planning for stocks, real estate, and other assets by breaking down the tax impact before a sale is executed.
How to use the NerdWallet Financial Calculators Capital Gains Tax Calculator
- 1
Enter the purchase price of the investment in the designated field
- 2
Enter the current selling price or expected sale value
- 3
Select the holding period or indicate if the asset was held short-term or long-term
- 4
View the estimated tax liability and breakdown of short-term versus long-term rates displayed in the results
Best for
Investors and asset owners who need a quick estimate of capital gains tax before selling stocks, real estate, or other investments, particularly those unsure how holding period affects their tax bracket.
Limitations
- Results are estimates based on current tax rates and may not reflect individual tax situations
- Does not account for deductions, losses, or specific tax law changes beyond the stated year
- No unit switching or currency conversion; inputs are assumed to be in US dollars
Capital Gains Tax Calculator FAQ
- How does the holding period affect the capital gains tax rate?
- The calculator distinguishes between short-term gains, taxed as ordinary income, and long-term gains, which benefit from reduced tax rates depending on taxable income and filing status.
- Can this calculator be used for real estate or only stocks?
- The tool is designed for investment assets generally; users can input purchase and sale values for stocks, real estate, or other capital assets to estimate the tax owed.
- Does the calculator include state or local taxes?
- The estimate is based on federal capital gains tax rates; state and local taxes are not factored into the result.
- What if I have both gains and losses in the same tax year?
- This calculator estimates tax on a single asset sale; net gains or losses across multiple assets would require separate calculations or consultation with a tax professional.
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