Sales Tax Calculator
Calculate sales tax for a purchase, or work backwards from a tax-inclusive total to find the pre-tax price.
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About Sales Tax Calculator
US sales tax
Set at state, county, and city level. Combined rates range from 0% (Oregon, Montana, New Hampshire, Delaware, Alaska) to over 10% (parts of Louisiana, Tennessee, Arkansas, Washington, Alabama). Many states exempt groceries and clothing.
Reverse calculation use
Receipts often show only the total. To find the pre-tax price from a total + known rate: pre-tax = total ÷ (1 + rate). Useful for expense reports and tax filing.
Why states tax differently
States without income tax tend to have higher sales tax (e.g., Washington, Tennessee). States with strong income tax often exempt necessities (food, clothing, medicine). Rates and exemptions change yearly — verify with your state revenue department for accuracy.