This calculator estimates a monthly payment for a new-car loan from the amount borrowed, APR, and loan term; it also estimates total interest. The average new-car payment was $745 per month in the fourth quarter of 2024, according to Experian, but your payment depends on the vehicle price, down payment, rate, and repayment period.
Formula
The calculator uses the standard fixed-payment loan formula. It converts the annual percentage rate (APR) to a monthly rate and spreads repayment over the number of monthly installments:
Monthly payment = P × r ÷ [1 − (1 + r)−n]
- P is the amount financed, in dollars.
- r is the monthly interest rate: APR ÷ 1,200, where APR is entered as a percentage per year.
- n is the term in months: years × 12.
The payment is rounded to the nearest cent. Estimated total interest is the rounded monthly payment multiplied by the number of payments, minus the original loan amount. Because payments are rounded, this is an estimate of the schedule; a lender’s final installment or payoff figure may differ slightly.
Worked Example
Using the calculator’s default inputs—$20,000 financed, 8% APR, and five years—the term is 5 × 12 = 60 months, and the monthly rate is 8 ÷ 1,200 = 0.0066667.
Monthly payment = 20,000 × 0.0066667 ÷ [1 − (1.0066667)−60] = $405.53 per month, rounded to cents.
Total interest = $405.53 × 60 − $20,000 = $4,331.80. The scheduled payments add up to $24,331.80, including repayment of principal and estimated interest.
What the Average New-Car Payment Means
The $745 figure is an observed average, not a standard payment that every buyer should expect. Experian’s State of the Automotive Finance Market report put the average payment on a new vehicle at $745 per month in Q4 2024. The same report listed an average new-vehicle loan amount of about $42,332 and an average term of roughly 68 months. Figures vary across reporting periods and datasets, so always note the date and source when comparing averages.
An average combines borrowers with different vehicles, loan sizes, rates, terms, and down payments. It is not the median, does not describe every borrower, and does not include all the costs of owning a car. A person paying substantially less or more than the average is not necessarily an unusual case.
What Changes the Monthly Payment?
The amount financed is usually the largest driver. A down payment or trade-in equity can reduce the balance, while taxes and fees added to the loan can increase it. A higher APR raises the cost of borrowing. A longer term generally lowers the scheduled monthly payment, but it usually means more payments and can increase total interest.
- Vehicle price and amount financed: The amount financed may include more than the advertised price, depending on the transaction.
- Down payment and trade-in: These can reduce what is borrowed, though any remaining balance on a trade-in can affect the amount financed.
- APR: Use the rate shown in the actual loan offer for a personal estimate. The calculator’s 8% is only an example input.
- Loan term: Enter the full repayment period in years; this calculator assumes equal monthly payments.
Payment Versus Total Cost
A monthly payment alone does not show the full cost of a car loan. For example, at the calculator’s fixed $20,000 principal and 8% APR, a five-year schedule estimates $405.53 per month and $4,331.80 in interest. Extending the term to six years at the same rate reduces the payment to about $350.52, but increases estimated interest to about $5,237.44. These are mathematical examples, not quoted market rates or a recommendation.
Also budget separately for costs that are not in this calculation, such as insurance, fuel or charging, maintenance, registration, and parking. A loan payment is only one part of the ongoing expense of having a vehicle.
How to Use the Estimate Carefully
Enter the amount you expect to finance, not automatically the vehicle’s sticker price. Check whether a quote includes taxes, optional products, or fees in the financed balance, and use the APR and term from the written offer when available. Compare estimates using the same principal and APR if you are trying to understand the effect of changing just the term.
This calculator assumes one fixed APR and regular monthly payments. It does not model a changing rate, irregular payment dates, a balloon payment, skipped payments, or a final installment adjustment. It also does not determine the rate or terms a lender may offer. Get actual figures from the lender and check the agreement for the amount financed, payment count, APR, and total of payments.
Frequently Asked Questions
What is the average new-car payment?
Experian reported an average new-vehicle payment of $745 per month in Q4 2024. This is a dated national average, not a forecast or an estimate for a particular buyer.
Is $745 the average payment for every new-car buyer?
No. It is an average across reported loans. Individual payments vary with loan size, APR, term, down payment, and other transaction details.
Does a longer car loan lower the payment?
Usually, spreading a fixed loan over more months lowers the scheduled payment. It can also increase total interest because interest accrues over a longer period.
Does the monthly payment include insurance and taxes?
This calculator estimates loan principal and interest only. Insurance and ownership expenses are separate, and taxes or fees are included only if they are part of the amount financed you enter.
Why is my lender’s payment different from this estimate?
The actual amount may reflect a different financed balance, APR, term, payment schedule, fees, or rounding. Use the lender’s disclosure for the exact figures.
This result is an estimate for educational purposes, and the lender’s disclosure gives the exact figures.
Related
Formula used
in p | Loan amount | $ | 20000 | 1 | 100000000 in apr | Interest rate (APR) | % | 8 | 0.01 | 100 in yrs | Loan term | years | 5 | 0.0833 | 50 out pmt | Monthly payment | $ | round(p * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)), 2) | 2 out int | Total interest | $ | pmt * yrs * 12 - p | 2
Each line is one input (in, sel, list) or one result (out: label, unit, formula, decimals). How the calculators work
Method: the standard loan formula for this calculation, fixed rate and monthly compounding unless stated, rounded as each result states. Not financial advice; no lender, rate or product is recommended. See formulas and assumptions, the disclaimer or report an error.
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