Capital Gains Estimator

Estimate tax on investment gains — short-term vs long-term holding matters.

Buy price ($):

Sell price ($):

Quantity:

Holding period:

Tax rate on gains (%):

How to use

Enter buy/sell prices, quantity, holding period, and tax rate, then click Calculate.

Short-term vs long-term?

Assets held over a year usually get lower long-term rates; under a year is taxed as ordinary income in the US.

Is this exact tax?

No — rates vary by country, income, and asset type. This is a planning estimate only.

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