Finance
Auto loan calculator
The payment is the last line of a dealer worksheet, not the first. This works through the same order: price, trade, tax, fees, then the payment that falls out.
Negative equity is the line to watch
If you owe more on your trade-in than it is worth, the shortfall does not disappear. It gets added to the new loan, so you begin the next car already underwater. Roll $5,000 of negative equity into a $30,000 purchase and you are financing $35,000 against an asset worth $30,000 the moment you drive away.
The calculator shows this explicitly when the amount owed exceeds the trade value. If that line appears, the honest options are to delay the purchase, pay the gap in cash, or accept that you will be underwater for the first two or three years of the new loan.
Long terms lower the payment and raise the cost
Seventy-two and eighty-four month car loans exist because they make an expensive car look affordable monthly. On $28,000 at 7.5%, the payment falls from $561 over 60 months to $428 over 84 — but total interest climbs from $5,660 to $7,974.
The larger problem is depreciation. A typical new car loses roughly half its value in five years, while an 84-month loan takes seven to clear. For most of the middle years you owe more than the car is worth, which means an accident or a job change becomes a financial problem as well as a practical one.
Get the financing quote before you discuss the payment
A dealer who asks what monthly payment you are looking for is asking for the one number that lets them adjust term, rate and price independently while still hitting your target. The defence is simple: negotiate the out-the-door price first, arrive with a pre-approval from a bank or credit union, and treat dealer finance as a competing offer that has to beat it.
Manufacturer promotional rates — 0% or 1.9% — are real, but they are usually offered instead of a cash rebate rather than alongside it. Compare the total cost of the low rate against the rebate applied to a normal loan; on shorter terms the rebate often wins.
What the fees line covers
Title, registration and taxes are set by your state and are not negotiable. Documentation fees are set by the dealer, vary from about $85 to over $900 depending on the state, and are capped by law in some. Anything described as market adjustment, protection package, fabric treatment or nitrogen-filled tyres is dealer margin and can be declined.
Common questions
How much should I put down on a car?
Twenty percent on a new car and ten on a used one is the traditional guidance, and it exists mainly to keep you ahead of depreciation. If a smaller deposit would preserve an emergency fund, the trade-off can be worth it — but expect to be underwater for longer.
Does applying to several lenders damage my credit score?
Rate shopping for a single auto loan is treated as one enquiry by the main scoring models as long as the applications fall within a short window, typically 14 to 45 days depending on the model. Applying to several lenders in the same fortnight is normal and expected.
Is 0% financing really free?
The financing is, but it usually replaces a cash rebate. If the choice is 0% over 60 months or $3,000 off, calculate the interest you would pay on the discounted price at a normal rate. On a short term the rebate frequently comes out ahead.
Should I take gap insurance?
It covers the difference between what an insurer pays out and what you still owe. It is worth considering when you have a small down payment, a long term or rolled-in negative equity — exactly the cases where the gap is largest. Buying it from your own insurer is usually far cheaper than from the dealer.