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Free sales tax calculator. Add sales tax to a price or remove it from a tax-inclusive total to see the tax and the price before tax. Works for any rate.
Enter your values and select Calculate to see the result.
Sales tax is added to the price of goods and many services at the point of sale. In the United States it varies by state, county and city, so the same item can cost different amounts in different places.
Enter the amount and your local sales tax rate, then choose whether to add tax to a pre-tax price or to remove it from a price that already includes it. The calculator shows the price before tax, the tax and the total. Rates and exemptions change, so confirm the rate that applies to your purchase.
total = price × (1 + rate ÷ 100); price before tax = total ÷ (1 + rate ÷ 100)
A $100 item with 8.25% sales tax costs $108.25. If $108.25 includes the tax, the price before tax is $100.
Estimates only. This calculator gives a general estimate and is not financial, tax or legal advice. Rates, fees and rules vary by country and situation. Read our disclaimer.
Multiply the pre-tax price by the sales tax rate and divide by 100, then add the result to the price. At 8.25%, a $100 item has $8.25 of tax and costs $108.25.
Divide the total by 1 plus the tax rate as a decimal. A total of $108.25 at 8.25% is $108.25 ÷ 1.0825 = $100 before tax. Do not subtract 8.25% of the total, because tax is a percentage of the pre-tax price.
Use the combined state, county and city rate for the place where the sale is taxed. Rates differ by location and product type, and some items are exempt, so check your local tax authority.
The arithmetic is the same. VAT and GST are usually included in displayed prices in many countries, while US sales tax is normally added at the till.