Everyday
Sales Tax Calculator
Calculate sales tax and the total price from a pre-tax amount and tax rate.
- Free to use
- Runs in your browser
- Level A · Standard formula
- Last reviewed 2026-08-16
How to use this calculator
Enter the requested values and select Calculate. The result is computed locally in your browser using the formula shown on this page.
Understanding the result
This calculator reports the mathematical result without assigning unsupported performance ratings or professional judgments. Context may affect how the result should be interpreted.
Calculation method
Sales Tax = Pre-tax Amount × Tax Rate; Total = Pre-tax Amount + Sales Tax.
Calculator guide
About the Sales Tax Calculator
Sales tax calculations add a percentage-based tax amount to a pre-tax purchase amount.
What to keep in mind
- Tax rates vary by jurisdiction and sometimes by product type.
- Some items may be exempt or taxed differently.
- Use the actual applicable rate rather than assuming a location's general rate.
Formula & methodology
Sales Tax = Pre-tax Amount × Tax Rate; Total = Pre-tax Amount + Sales Tax
Review standard: Level A · Standard formula. How calculator reviews work.CalculateMeasure performs the arithmetic locally in your browser. The displayed result depends on the values and units you enter.
Frequently asked questions
What does this calculator calculate?
Sales tax calculations add a percentage-based tax amount to a pre-tax purchase amount.
Can I use the result for an important decision?
Use the result as a calculation aid and verify the inputs, assumptions, and applicable professional or regulatory requirements before relying on it for an important decision.
Does CalculateMeasure store the values I enter?
This calculator performs its arithmetic in your browser. The calculator itself does not need to send your entered values to a server to produce the result.