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Capital gains tax calculators

Four calculators for owners planning a sale. Each one shows the formula inputs, the tax year it uses and the source behind every figure.

Capital gains tax estimator (federal, 2025 rates)

Estimate federal tax on long-term and short-term gain, plus the 3.8% net investment income tax, from the 2025 IRS rate table.

1031 exchange 45-day and 180-day deadline calculator

Enter your transfer date to see your 45-day identification deadline and your 180-day receipt deadline.

Section 121 home sale exclusion checker

Check whether your home sale meets the Section 121 ownership and use tests and how much gain you may exclude.

Sell now or wait for long-term treatment

Compare the federal tax on a sale made now with a sale after the holding period passes one year.

Richard C. Wilson, founder of Family Office Club
Questions about a sale

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Richard C. Wilson, founder of Family Office Club