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Auto Rebate and Financing Options

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Use this calculator to help you determine whether you should take advantage of dealer financing, dealer promotional low interest financing or traditional financing. While promotional low interest financing lowers your monthly payment, you may be better off with the manufacturers rebate and a higher interest rate. The best option depends on the price of the vehicle, the size of the rebate and the interest rates available for financing.

Auto Rebate and Financing Options Definitions

Total purchase price (before tax)
This is the total cost of your auto purchase. Include the cost of the vehicle, any additional options and any destination charges. Don't include sales tax in this amount. Sales tax will be calculated for you and included in your total after-tax price.
Term in months
Number of months for your auto loan.
Cash down
Total amount of cash used in this purchase. The larger your cash down payment the smaller the loan you will need to finance this purchase.
Trade allowance
The total amount that you are given for any automobile that you trade-in as part of this purchase. In some states a trade-in can also reduce the amount of sales tax you will owe. See the definition for 'Sales tax deduction for trade-in' for more information on trade-in vehicles and sales tax.
Amount owed on trade
Total loan balance still outstanding on the trade-in.
Sales tax rate
Sales tax percentage rate charged on this purchase.
Dealer financing
The interest rate you may be able to receive from an auto manufacturer or dealer. If you choose this rate the calculator assumes that you would also be eligible for the rebate amount.
Dealer incentive rate
The incentive interest rate you may be able to receive from an auto manufacturer or dealer. These rates are usually significantly below standard auto loan interest rates. Promotional dealer financing can be as little as 0% per year. Most manufacturers allow you to choose either low interest financing or a manufacturer rebate, but not both. This calculator assumes that if you choose low interest financing you are not eligible for any manufacturer rebate.
Traditional financing
The interest rate you may be able to receive from a bank, credit union or other lender. This is usually a higher interest rate than the manufacturer's promotional financing, but is often very competitive when used in combination with a manufacturer rebate. This calculator assumes that if you choose the traditional financing option you are eligible for a manufacturer rebate.
Manufacturer rebate
A cash rebate paid by the auto manufacturer to you when you purchase a new vehicle. Most manufacturers allow you to choose either a promotional low interest financing option or a manufacturer rebate, but not both.
No sales tax deduction for trade-in
If you live in a state where your sales tax is calculated on your full purchase price check this box. If this box is unchecked sales tax is calculated on the purchase price less trade-in. Currently California, the District of Columbia, Hawaii and Michigan allow no deductions for trade-ins when calculating sales tax. In addition, Alaska, Delaware, Montana, New Hampshire, and Oregon have no sales tax on autos.
Calculate sales tax before rebate
Some states will calculate sales tax on your purchase price before a manufacturer's rebate is applied. If your state calculates sales tax on the vehicle price before the rebate is applied, check this box.