Free OnlineCalculators & Converters
Sales Tax Calculator
Calculate sales tax and total price from any pre-tax amount. Or remove tax from a total to find the original price. Includes all US state tax rates.
sales tax calculatortax calculatorcalculate sales taxstate tax rateadd tax remove tax
Key Features — Sales Tax Calculator
Add tax to a price instantly
Remove tax from a total (reverse calculation)
All US state sales tax rates built-in
Custom tax rate input
Shows tax amount and total price separately
Why Use This Tool — Sales Tax Calculator
Free Online Sales tax calculatorTax calculator — for EveryoneFast & Easy Calculate sales taxState tax rate — 100% FreeFree Online Add tax remove tax
Privacy First
All processing happens in your browser. Your data never leaves your device.
Lightning Fast
Get instant results with zero wait time. No server delays, no loading screens.
Works Everywhere
Use on any device — desktop, tablet, or phone. No downloads or plugins needed.
Frequently Asked Questions — Sales Tax Calculator
How do I calculate sales tax on a purchase?
Multiply the price by the tax rate (as a decimal). For a $50 item with 8% tax: $50 × 0.08 = $4 tax, making the total $54. The calculator does this instantly for any price and rate.
How do I remove tax from a total to find the original price?
Divide the total by (1 + tax rate). For a $54 total with 8% tax: $54 ÷ 1.08 = $50 pre-tax price. Use the "Remove Tax" mode in this calculator for the reverse calculation.
Which US state has no sales tax?
Five US states have no statewide sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon. However, some local jurisdictions in these states may still charge local sales taxes.