Sales Tax Calculator US
Add or remove consumption tax and see the net and gross amounts.
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How it works
Adding tax multiplies the net price by the rate and adds it on. Removing tax works backwards from a tax-inclusive price to find the original net amount.
Gross = Net × (1 + rate); Net = Gross ÷ (1 + rate)Frequently asked questions
Is there a federal sales tax in the US?
No. Sales tax is set by individual states and local governments, so the rate depends on where the purchase is made.
How do I calculate sales tax on a price?
Multiply the price by the tax rate as a decimal to get the tax, or by (1 + rate) to get the total. At 8%, a $50 item costs $54.
How do I work out the price before tax from a total?
Divide the tax-inclusive total by (1 + the rate). A $54 total at 8% was $50 before tax.
Which US states have no sales tax?
Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax, though some Alaska localities charge a local tax.
Why do sales tax rates differ within a state?
Cities and counties can add their own local sales tax on top of the state rate, so two towns in the same state can have different combined rates.
Does sales tax apply to everything?
No. Many states exempt or reduce tax on items like groceries, prescription medicine or clothing, so rules vary by state and product.
How US sales tax works
There is no federal sales tax in the United States — it is set by states and localities, so the rate depends on where the sale happens. Combined state-and-local rates range from 0% to over 10%. To add sales tax, multiply the price by (1 + the tax rate as a decimal).
Worked example
On a $50 purchase with 8% sales tax: 50 × 1.08 = $54.00, of which $4.00 is tax. At 6% the same item is $53.00; at 9.5% it is $54.75. The calculator handles any rate you enter.
Backing tax out of a total
To find the pre-tax price from a tax-inclusive total, divide by (1 + rate). A $54 total at 8% tax was $54 ÷ 1.08 = $50.00 before tax, so the tax portion was $4.00. This "reverse" calculation is useful for receipts and expense reports.
Rates vary by location
Five states — Alaska, Delaware, Montana, New Hampshire and Oregon — have no statewide sales tax (though some Alaska localities levy their own). Elsewhere, city and county taxes stack on top of the state rate, so always use the combined rate for the exact location of the sale.
Results are estimates for general guidance in United States and may not reflect the latest local rates, fees or rules. Check official sources before making decisions.