Calculators
Sales Tax Calculator
Calculate sales tax and total price from a pre-tax amount and tax rate.
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Version 1.0.0 · Last reviewed
Tool
Result
Live output from your inputs
Enter values and calculate to see results.
How it worksShow guideHide guide
Introduction
Add sales tax to a pre-tax price to see tax amount and checkout total.
Formula
Total equals price plus sales tax, where tax is price × rate ÷ 100.
- P — Price before tax
- r — Sales tax rate percent
- T — Total with tax
Step-by-step
- Enter the price before tax.
- Enter the sales tax rate.
- Read tax amount and total.
Worked example
A $40 item at 8.25% sales tax costs $43.30 total ($3.30 tax).
Use cases
- Estimate US state sales tax at checkout
- Budget for tax on a purchase
- Verify a receipt total
Frequently asked questions
Is this the same as GST/VAT?
Same add-tax math. Use GST or VAT calculators when you need inclusive/exclusive modes for those labels.
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