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Car Loan Calculator

See what that car really costs: monthly payment, total interest, and the all-in price after your down payment and trade-in.

Estimated monthly payment
$0
Amount financed$0
Total interest paid$0
Total cost of the car$0
Interest share of total0%
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How it works

Amount financed = price + fees − down payment − trade-in. The monthly payment uses the amortization formula M = P × r(1+r)n / ((1+r)n − 1), with r the monthly rate and n the number of payments. Total interest = all payments − amount financed.

Estimates only — not a loan offer. Actual rates depend on credit, lender, and vehicle.

Formula & worked example

Formula: Amount financed = price + fees − down payment − trade-in value. The payment then uses the amortization formula M = P × r(1+r)n ÷ ((1+r)n − 1).

Worked example: A $32,000 car with $4,000 down finances $28,000; at 6% over 5 years the payment is $541.32/month.

When to use this

How to use it, step by step

  1. Enter the vehicle price out-the-door, not the sticker fantasy.
  2. Subtract down payment and trade-in.
  3. Set the APR and term from the actual offer.
  4. Add fees and taxes rolled into the loan.
  5. Read total interest — then shorten the term until the payment just fits, not the reverse.

What the inputs mean

InputWhat it isTypical values
Vehicle priceTotal price being financed before deductionsInclude dealer add-ons to be honest
Down payment / trade-inCash and equity reducing the amount borrowed20% down is the classic target
APRThe loan's annual rateNew 5–9%, used 8–14% typical ranges
TermMonths/years to repay48–60 mo healthy; 72–84 hides cost

Another worked example

A $28,000 car with $3,000 down and a $2,000 trade-in finances $23,000. At 8.5% over 60 months the payment is $471.88 and total interest $5,312.81 — nearly a quarter of the amount borrowed. The same car over 84 months would cut the payment but push interest past $7,900: the term is where the money leaks.

Frequently asked questions

Should I buy or lease?

Buying wins if you keep cars long-term — after the loan ends you own the asset. Leasing wins for always driving new with lower monthly payments, but you build no equity and pay mileage fees.

How much does the APR change my payment?

A lot: on a $25,000 five-year loan, 5% APR costs ~$472/mo while 10% costs ~$531/mo — about $3,500 more in interest. Try both above.

How much down payment should I put down?

Aim for 20% on new cars (10% on used) to avoid being underwater — owing more than the car is worth — the moment you drive off the lot.

Should fees and taxes be rolled into the loan?

Only if you must — you then pay interest on the tax itself for the whole term. This tool includes them in the financed amount when you enter them, which is exactly how the dealer's contract does it; compare against paying them in cash at signing.

What term should I choose?

The shortest whose payment fits with room to spare — 48–60 months is the usual sweet spot. If the car only works at 72–84 months, the honest read is that the car is too expensive for the budget, because you will owe more than it is worth for years.

🚗 Planning the whole purchase?

Compare financing options with our business loan calculator, or map your debt payoff plan.

Try the debt payoff calculator

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Affiliate links: none on this page today. We do not take paid placements from lenders, and we will never dress up advertising as a rate table — if affiliate partners are added here, they will be labeled and this note will say so. The links below are our own free tools.