Work out a car payment before you sign anything. The page folds the vehicle price, trade-in, sales tax, down payment, interest rate and term into a monthly figure, then compares that figure across several down payments and several loan lengths.
This page performs arithmetic on the figures you enter. It is not financial, investment, tax or credit advice, and it does not take your full circumstances into account. Rates, fees, products and rules differ by lender and jurisdiction and change over time. Treat the result as a starting estimate and confirm the actual terms with the provider or a qualified adviser before making a decision.
The tool builds the financed amount step by step rather than asking you for it. Sales tax is charged on the taxable price, the down payment and any trade-in reduce what is borrowed, and the resulting loan is then turned into a level monthly payment.
On the default inputs of 35000 price, 5000 down, no trade-in, seven percent tax and 5.5 percent over 60 months, the page reports the following.
| Alternative | Notes |
|---|---|
| A larger down payment | This reduces the amount financed and the tax on a trade-in, so it cuts both the interest bill and the monthly payment. It needs cash up front and gives up whatever return that cash might have earned elsewhere. |
| A longer term | Stretching the loan lowers the monthly figure without any extra cash, but interest accrues for longer and the total paid rises. The term table makes the size of that trade-off visible, since the loan amount does not change between rows. |
| A trade-in | A trade-in works like a down payment but also shrinks the taxable amount, so it can be worth slightly more than the same value in cash. Its effect is built into every row of both tables because the taxable price is recomputed from it. |
| A lower interest rate | This is the cleanest saving because it cuts the cost of borrowing without changing the loan or the term. It is not something the page can vary for you; the rate is an input, and shopping it around is the only way to move it. |
Every figure is calculated in the page, and the details of the car and the loan stay on your device.
Because in most places the trade-in reduces the taxable amount as well as the money you owe. This tool follows that pattern: it subtracts the trade-in first, then applies the tax rate to the remainder. If your state taxes the full purchase price regardless of trade-in, the tax figure here, and therefore the loan, will be lower than yours.
It costs more in total interest, yes, even though the monthly payment is smaller. The term comparison table shows this directly, because the loan amount is identical in every row and only the length changes. Total interest climbs steadily from the shortest to the longest term, so the lower monthly figure is a cash-flow choice rather than a saving.
Total payment is everything you hand over in instalments, which is the monthly payment multiplied by the number of months. Total cost adds the down payment back on, so it reflects everything you put into the car, cash and credit combined. The interest figure is the difference between the instalment total and the amount actually borrowed.
Yes, in principle. If the down payment and trade-in are large enough to cover the price plus tax, the loan is floored at zero and the monthly payment becomes zero as well. The comparison tables, which vary the deposit and the term independently, will still render, though their figures follow the same zero floor.
Last verified: October 7, 2026
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Maintained by Huang Bin · Last updated October 3, 2026