Finance & Money
Sales Tax Calculator
Calculate sales tax on purchases
Created and maintained by: CalcTago Editorial TeamLast updated: 2026-02-13
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
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Frequently asked questions
What does the Sales Tax Calculator do?
It helps you calculate sales tax on purchases.
What inputs do I need?
Enter Purchase amount and Sales tax rate.
Are decimals supported?
Yes, you can use decimal values where appropriate.
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About this tool
This Sales Tax Calculator turns your inputs into practical results. Provide Sales tax rate and Purchase amount to calculate Sales tax and Total price.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.