Car manufacturers often offer either cash-back incentives or low-interest financing when consumers purchase a vehicle. However, these two benefits usually cannot be combined, so you must choose one. You can use this calculator to compare and analyze which option offers the best value. Please note that the tax and fee calculation process in this calculator is designed specifically for vehicle purchases within the United States. If you use this calculator in other countries or regions, it will function normally, but you should adjust the input parameters according to local conditions. If you want to learn more about auto loans or perform other specialized calculations related to car financing, try using the Auto Loan Calculator. Cash Rebate vs Low Interest Calculator Compare a cash rebate versus a low interest rate offer to find the best deal for your car purchase. Enter your details below. Cash Rebate Offer Cash Rebate Amount ($): ...