How was sales tax figured?

Sales tax is typically calculated as a percentage of the sale price of a good or service. The rate is determined by local, state, or federal government authorities and can vary by location and type of product. To compute the sales tax, multiply the sale price by the applicable tax rate, and then add that amount to the original price for the total cost to the consumer. Some jurisdictions may have exemptions or different rates for specific items, so it's important to check local regulations.