Sales tax is a percentage of a retail price. To calculate it, convert the state sales tax percentage to a decimal, then multiply it by the retail price of the product or service.

Knowing how to calculate sales tax is important, especially if you're saving up for a large purchase. To calculate sales tax, multiply the total cost of the product by the sales tax rate levied in ...

The sales tax you pay depends on the state where you made your purchase. Use our free sales tax calculator below to estimate your sales tax.