Free Car Payment Calculator

Your Monthly Car Payment

The result card above leads with the number the dealer will quote you: the monthly payment. That is what leaves your account every month for the length of the loan, and it has to fit your budget alongside insurance, fuel and servicing.

Underneath it are three figures that decide whether the deal is actually good. The amount financed is what you are borrowing after your down payment and trade-in come off the price. The total interest is what the loan costs you on top of the car — money you never get back. The total of all payments is the complete amount that leaves your account across the term.

The card also shows the principal and interest split for the first month. On the default figures — $28,000 financed at 7.00% over 60 months — $391.10 of the first $554.43 payment reduces the balance while $163.33 is pure interest. That split shifts steadily in your favour: by the final payment almost all of it is principal, because interest is charged on a much smaller balance.

What Is a Car Payment Calculator?

A car payment calculator estimates your monthly auto loan payment from the vehicle price, your down payment and trade-in, the interest rate and the length of the loan. It also shows the total interest across the whole term — the figure dealers rarely lead with — so you can judge the real cost of borrowing.

It is useful for anyone shopping for a new or used car: checking that a payment fits your budget before you walk into a showroom, testing whether a bigger down payment is worth it, comparing a dealer's offer against a bank quote, or working out what price range you can realistically afford.

Enter your own numbers in the calculator at the top of this page and the results update as you type.

How Is Your Car Payment Calculated?

An auto loan is an instalment loan, so it uses the same amortisation formula as a mortgage or a personal loan. It finds the single level payment that clears the balance exactly at the end of the term:

Five inputs drive the result.

Vehicle Price

The price you actually agree to pay, not the sticker price. Negotiate this figure first and separately from the finance — a dealer can offer an attractive monthly payment on an inflated price by simply stretching the term. Every dollar off the price reduces both the payment and the total interest.

Down Payment & Trade-In

Both reduce the amount you finance, and they work identically in the maths. A $30,000 car with $3,000 down and a $2,000 trade-in means you borrow $25,000, not $30,000. If you still owe money on the trade-in, only the equity above that balance helps you; negative equity rolled into the new loan increases what you borrow and is one of the fastest ways to end up upside-down.

Interest Rate (APR)

The yearly cost of borrowing. The APR includes lender fees expressed as a yearly rate, which makes it the fairer number when comparing offers. Rate has a large effect on total cost: the same $30,000 over 60 months costs about $3,968 in interest at 5.00% but about $10,040 at 12.00%.

Loan Term

How many months you spread the balance over. Auto loans commonly run 36 to 84 months. A longer term always lowers the payment and always raises the total interest, because you are borrowing for longer — and a car is a depreciating asset, so the risk of owing more than it is worth grows with the term.

Sales Tax & Fees

This calculator covers the loan only. Sales tax, registration, title and documentation fees, and any dealer add-ons are not included — and most simple calculators quietly ignore them, which is why a real quote often comes back higher than expected.

In practice those costs are either paid upfront or rolled into the amount financed, where they attract interest for the whole term. On a $30,000 car, 6% sales tax plus around $500 of registration and documentation fees adds roughly $2,300 to what you borrow — about $46 a month more at 7.00% over 60 months, and around $460 of extra interest. Ask for the out-the-door price and enter that figure, minus your down payment and trade-in, to get a realistic estimate.

Monthly Car Payment by Loan Amount

The table below shows what different amounts financed cost at 7.00% APR over 60 months. Because the rate and term are held constant, the figures scale in a straight line — doubling what you borrow doubles both the payment and the interest.

These figures are illustrative. They assume a fixed 7.00% APR, a 60-month term and no tax or fees. Your own rate depends on your credit profile, the lender and whether the car is new or used, and a different term changes every number here. Run your actual numbers in the calculator above.

How Your Loan Term Changes the Payment

Term is the lever most buyers reach for when a payment feels too high, and it is the one most likely to quietly increase what the car costs. Here is a $30,000 loan at 7.00% APR across every common term:

The trade-off in one line: stretching $30,000 from 48 to 84 months cuts the payment by about $266 a month but adds about $3,551 in interest.

There is a second cost that does not appear in the table. A car loses value fastest in its first few years, so on a 72- or 84-month loan many borrowers spend a long stretch upside-down — owing more than the vehicle would sell for. That matters if the car is written off or you need to sell early, because the loan does not shrink to match the car's value.

How Much Does a Down Payment Help?

A down payment reduces the amount financed directly, so it cuts the payment and the interest at the same time. Here is a $30,000 car at 7.00% APR over 60 months:

Putting 20% down saves about $119 a month and roughly $1,128 in interest compared with financing the whole price. A widely used guideline is around 20% on a new car and 10% on a used one.

The interest saving is not the only benefit. A down payment also protects you against being upside-down — owing more than the car is worth. A new car can lose a significant share of its value in the first year or two, and if you financed the entire price there is nothing absorbing that drop. Real equity from day one means you can sell or trade without writing a cheque to close the loan.

Worked Example: A $30,000 Car

Putting the pieces together for a realistic purchase — a $30,000 vehicle with a $3,000 down payment and a $2,000 trade-in, financed at 7.00% APR over 60 months:

1. Start from the agreed price: $30,000.
2. Subtract the down payment: $30,000 − $3,000 = $27,000.
3. Subtract the trade-in: $27,000 − $2,000 = $25,000 amount financed.
4. Apply the formula with r = 0.07 ÷ 12 and n = 60, giving a monthly payment of $495.03.
5. Total of all payments: $495.03 × 60 = about $29,702.
6. Total interest: $29,702 − $25,000 = about $4,702.

So the car costs $30,000, but the finance adds about $4,702 on top — roughly 16% more than the sticker price, before tax, fees and insurance. That is the number worth knowing before you sign, and it is exactly what the tool at the top of this page shows you.

What an Extra Payment Saves You

Most US auto loans are simple-interest loans with no prepayment penalty. That means anything you pay above the scheduled amount goes straight to the principal, and next month's interest is charged on the smaller balance. The saving compounds from the month you start.

Take the worked example above — $25,000 at 7.00% over 60 months, a base payment of about $495:

Timing matters. An extra payment in month three removes interest from every remaining month, so it saves far more than the same amount paid in month fifty. If you can only overpay occasionally, do it early.

Two things worth confirming with your lender: that there is genuinely no early repayment charge on your agreement, and that extra money is applied to the principal rather than held as an advance against next month's payment, which achieves nothing. Use the extra monthly payment field above to model a figure you could actually sustain.

How Interest Rates Affect Your Payment

Rate is the input buyers worry about least and should worry about most. Here is the same $30,000 loan over 60 months at different rates:

The difference between a 5% and a 12% rate on the same $30,000 loan is about $6,072 in interest. Notice how modest the monthly gap looks — $566 against $667, about $101 — which is precisely why rate is easy to overlook when you are focused on whether the payment fits.

Your rate depends on your credit profile, the term, the lender and whether the car is new or used. The Federal Reserve's G.19 release publishes average new-car loan rates if you want a sense of the current market. For a plain-English explanation of how APR works and why a longer term costs more, see our guide to understanding interest rates.

New vs Used Car Loans

The two markets are priced differently, and the cheaper car is not automatically the cheaper loan.

New cars usually attract lower interest rates. Lenders face less risk because the vehicle's value is known and predictable, and manufacturers often subsidise finance to move stock. The offset is the higher price and the steep first-year depreciation you absorb.

Used cars cost less to buy, which means borrowing less — often the single biggest saving available. But rates are typically higher, maximum terms can be shorter, and very old or high-mileage vehicles may not qualify for the longest terms at all.

The practical point: check the rate before you settle on the price. A used car at a high rate over a short term can carry a bigger monthly payment than a new one on a subsidised deal, even though the used car costs thousands less. Run both through the calculator with the rate and term each would actually get, and compare the total cost rather than the sticker.

Dealer Financing vs Bank or Credit Union

Both can be the cheaper option depending on the day, the car and your credit — which is the argument for getting a quote from each rather than assuming.

Dealer financing is convenient and sometimes genuinely cheapest, because manufacturers subsidise promotional rates to shift particular models. The caveat is that those headline rates — the 0% and 1.9% offers — are usually reserved for the strongest credit profiles, specific models, and often the shortest terms. They may also be offered instead of a cash rebate, so the low rate can cost you the discount. Ask what the deal looks like both ways.

Banks and credit unions are frequently cheaper on standard finance and will pre-approve you before you shop. Arriving with a pre-approved quote does two things: it sets a benchmark the dealer has to beat, and it moves the conversation to the price of the car rather than the size of the monthly payment.

How to Use This Car Payment Calculator

Six steps, about a minute.

1. Enter the vehicle price you expect to pay — the negotiated figure, not the sticker. If you have an out-the-door quote including tax and fees, use that instead for a realistic result.
2. Add your down payment and trade-in. Both reduce what you finance. Use only the equity in the trade-in if you still owe on it.
3. Set the term you want. Start with the shortest term whose payment you could comfortably sustain.
4. Enter the APR you have been quoted. If you do not have a quote yet, try a range to see how sensitive your payment is to the rate.
5. Add an optional extra monthly payment to see how much sooner the loan clears and how much interest you avoid.
6. Check the total interest — not just the monthly figure — before you agree to anything. Two deals with the same payment can differ by thousands over the term.

How to Lower Your Car Payment

Practical levers, roughly in order of how much they usually move the number.

Our Methodology

Payments are calculated with the standard fixed-rate amortisation formula shown above, applied monthly with no rounding until the figure is displayed. The tool assumes a fixed APR for the whole term and equal monthly payments. Where you enter an extra monthly payment, the loan is walked month by month so the shortened payoff time and the interest saved are exact rather than estimated.

Prices, rates, terms, down payments and trade-in values are estimates you supply; we do not quote rates, check your credit, or contact dealers or lenders on your behalf. The 7.00% APR used in the tables on this page is an illustrative mid-range figure chosen to make the arithmetic easy to follow — it is not an offer or a prediction about what you would be charged.

Results exclude tax, fees and insurance. Sales tax, registration, title and documentation fees, dealer add-ons, gap cover, extended warranties, insurance, fuel and servicing are all outside the scope of this calculator. Leases, balloon-payment agreements and variable-rate finance are not modelled either. Table figures are rounded to the nearest dollar, so a total may differ by a dollar from the sum of its rounded parts.

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