Sales Tax Calculator
Calculate sales tax and a total price from a purchase amount and tax rate. Verify the applicable rate for the location and transaction.
Enter two known values
Enter any two of the before-tax price, sales tax rate, and after-tax price, then select Calculate. Read the calculated third value in the result. Clear lets you start with another example.
A price-and-rate example
For an $80 taxable price and a 7.5% rate, the tax is $80 multiplied by 0.075, or $6. The after-tax total is $86. This illustrates the arithmetic only; it does not determine the applicable tax treatment of a purchase.
Use the rate for the transaction
Confirm the rate and taxable amount with the seller or relevant tax authority. Location, product type, exemptions, and transaction rules can affect the amount charged. A general online calculator cannot establish those facts from the price alone.
Compare the final bill
Check how discounts, delivery, fees, and rounding are treated in the actual transaction. This page estimates a relationship between three entered numbers. It does not provide a current state-by-state rate table or determine a business’s collection and filing obligations.