Most states charge sales tax and title fees when you purchase a used car. However, some dealers will try to squeeze out extra profits by fiddling with extra fees after you have completed negotiating the price of the car and you have let down your guard.

To accurately calculate the sales tax, you need to know how your state taxes the value of your trade-in and dealer incentives as well as the sales price of your car.

Step 1

Ascertain the final sales price of your car.