PreTax Tip is a great way to determine the amount to tip on a bill before tax. Choose your state, and PreTax Tip will consider your state's sales tax, then produce a tip amount that is based on the pre-tax bill. PreTax Tip will provide the total amount to be tipped, and also the option to show the tip amount split up to six ways. Should you desire to round off your bill, you are given the option to round up to the nearest $0.50 with the simple tap of a button. The option to determine a tip post-tax is also provided should that be desired.