A reverse sales tax calculator lets a user figure out the amount of an original sale price before sales tax, according to Calculator Pro. The user inputs two values: the total amount that includes the sales tax and the sales tax percentage.
If a user needs to find out the original price, or if he wants to make sure that a payment included the proper amount of sales tax, this tool is very useful, reports Calculator Pro. For tax reasons, users can take advantage of this tool if they claim overpaid local and out-of-state taxes on their returns. Many taxpayers receive credits for sales tax paid over a certain amount.