Capital Gains Calculator

Model your federal tax liability on asset sales, accounting for holding periods and Net Investment Income Tax (NIIT).

Transaction Inputs

Filing Status

Standard Income ($)

Capital Gain Amount ($)

Holding Period

Short-Term (< 1 Year) Long-Term (> 1 Year)

Base Capital Gains Tax

Net Investment Income Tax (NIIT)

3.8% surtax applied to high earners

Total Federal Liability on Gain