In the United States when you go to the store to purchase something, let’s say we go to purchase a T shirt, we buy the T shirt and when we go to the register to pay we give them cash, a debit or a credit card and they give us a receipt. When you look at the receipt, you will notice that at the end of each receipt, before the total, there is a subtotal showing the cost of the purchase, then there is the added sales tax, then the total amount, which is what you are required to pay.