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How to use the Sales Tax Calculator
- 1Choose your country and state or province; the current rate fills in automatically.
- 2Pick whether to add tax to a price or remove tax from a total that already includes it.
- 3Enter the amount to see the tax, the total and the breakdown (state and local, or GST and PST).
How to calculate sales tax
To add tax, multiply the price by the tax rate: a $80 item with 8.25% tax has $6.60 of tax, for a total of $86.60 (80 × 1.0825).
To remove tax from a total, divide by 1 plus the rate: a $108.25 receipt at 8.25% was $100.00 before tax (108.25 ÷ 1.0825), so the tax was $8.25. Simply taking 8.25% off the total would give the wrong answer.
US sales tax vs Canadian GST, PST and HST
The US has no national sales tax. 45 states and DC charge a state sales tax, and many cities and counties add their own, so the rate depends on exactly where you buy. Prices on shelves are shown before tax.
Canada charges a 5% federal GST everywhere. Five provinces combine it with their provincial tax into a single harmonized sales tax (HST), while British Columbia, Manitoba, Saskatchewan and Quebec charge a separate provincial tax. Australia (10% GST), New Zealand (15% GST) and the UK (20% VAT) include tax in displayed prices.
Sales tax by state and province
Frequently asked questions
Which US states have no sales tax?
Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax. Alaska and Montana allow some local taxes.
Which state has the highest sales tax?
California has the highest state rate (7.25%). Including average local taxes, Louisiana (10.11%), Tennessee (9.61%) and Washington (9.51%) have the highest combined rates in 2026.
How do I find the exact rate for my city?
Our state pages show the state rate and the average local rate. For an exact address, use your state revenue department's rate lookup, then type that rate into the calculator.