Sales Tax Calculator
Calculate sales tax quickly. Add tax to a price or remove tax from a total (pre-tax amount).
Sales Tax Calculator tool
Privacy: calculations run locally in your browser. No inputs are stored or sent to a server.
Add tax: tax = price × rate, total = price + tax
Remove tax: price = total ÷ (1 + rate), tax = total − price
Examples
- Add: $100 at 8% → tax $8 → total $108
- Remove: $108 at 8% → price $100 → tax $8
FAQ
- Is this VAT?
Not exactly. VAT is often included in the listed price, while this tool is for a sales tax workflow where tax is added at checkout. If your prices already include tax, use a VAT-style calculator.
- Why does remove-tax use division?
Because the tax is embedded in the total. To find the pre-tax price, divide the total by 1 plus the rate, then compute tax as total minus price.
- Does this round like retailers?
This uses standard rounding for display. Real receipts may round per line item or use different rounding rules depending on jurisdiction and retailer systems.