Sales Tax Calculator

About this calculator

This calculator applies a tax rate to a net (pre-tax) amount to find both the tax owed and the gross total, using the straightforward relationship of multiplying the net amount by the tax rate to get the tax, then adding that to the original amount for the final price. Since sales tax rates vary by country, state or region, entering the applicable local rate makes the result specific to wherever the purchase is happening.

Shoppers use it to estimate the final price of a purchase before checkout, especially for larger buys where the tax amount is significant enough to matter for budgeting. Small business owners and freelancers use the same calculation to add the correct tax to an invoice or quote, and it's also used in reverse-style comparisons when working out how much of an already-taxed total was the tax portion versus the original price.