Sales tax rate

Sales tax rate is expressed as a percent of the price the customer pays for an item. It is added to the price. In most states, the sales tax is set at the state level. This rate varies from state to state.

Example
Joseph bought a large chocolate chip cookie that costs $2.00. The sales tax in his state is 8.5%. How much does Joseph have to pay in total?
1.085 × 2.00 = 2.17
Thus, Joseph's total was $2.17.