How to Calculate Sales Tax & Remove Tax from a Total

🧮Free Sales Tax Calculator
Add or remove sales tax from any amount.Open tool →

Add tax to a price

Total = price × (1 + rate ÷ 100). $100 at 8.25%: 100 × 1.0825 = $108.25.

Remove tax from a total

Price before tax = total ÷ (1 + rate ÷ 100). $108.25 ÷ 1.0825 = $100. Tax = total – price. Choose 'tax included' in the Sales Tax Calculator to do this automatically.

Find your rate

US sales tax combines state, county and city rates – from 0% in states like Oregon and Delaware to over 10% in some cities. Check your state revenue department's lookup tool for the exact address.

VAT works the same way

Outside the US, VAT-inclusive prices are common – use the same reverse formula.

Frequently asked questions

Is sales tax charged on shipping?

It depends on the state.

Do online stores charge sales tax?

Usually yes, based on where the buyer is.

Is this tax advice?

No – check with your tax authority or an accountant.