Step 1: Start with vehicle price
Use the negotiated selling price before down payment, trade-in, and financed taxes or fees.
72 month auto loan calculator
2026 72 month auto loan calculator.
Estimate a 72-month car payment, total interest, amount financed, and payoff schedule before choosing a longer loan term.
Formula shown
Front-end only
Term default: 72 months
Updated August 13, 2026
Amortization preview
Your 72-month loan, month by month.
Preview the first 12 payments or expand all 72 payments to see how much interest remains over a longer term.
First payment
$0
Principal in first payment
$0
Interest in first payment
$0
Payoff
72 months
On small screens, swipe the table sideways to see every column.
| Month | Payment | Principal | Interest | Balance |
|---|
Direct answer
How to calculate a 72-month car payment.
To calculate a 72-month car payment, start with the amount financed, convert APR to a monthly rate, and amortize the balance over 72 payments. Trade-in equity and down payment reduce the balance; financed taxes, fees, and negative equity increase it.
Amount financed = vehicle price - down payment - net trade-in equity + financed taxes and fees. If net trade-in equity is negative, it increases the amount financed. Monthly payment = P x r(1+r)n / ((1+r)n - 1), where P is amount financed, r is monthly interest rate, and n is the number of monthly payments.
Calculation steps
72-month payment estimate, step by step.
Step 2: Subtract cash down
Enter the money you plan to pay upfront. A larger down payment lowers the amount financed.
Step 3: Subtract net trade-in equity
Use trade-in value minus any remaining loan payoff on the vehicle being traded. Negative equity is added to the new loan.
Step 4: Add financed taxes and fees
Include these costs only when they will be rolled into the new auto loan.
Step 5: Apply APR over 72 months
The calculator converts APR to a monthly rate and amortizes the balance over 72 monthly payments.
Key definitions
Terms used in the calculator.
- Trade-in value:
- The credit a dealer or buyer gives for your current vehicle.
- Net trade-in equity:
- Trade-in value minus any remaining payoff on the old vehicle loan.
- Negative equity:
- The payoff amount that remains after the trade-in value is applied.
- Amount financed:
- The loan balance used to calculate monthly payments and interest.
- APR:
- The annual percentage rate entered as the yearly borrowing rate for this estimate.
Formula source
Why this formula is reliable.
M = P x r(1+r)n / ((1+r)n - 1)
M is the monthly payment, P is the amount financed, r is the monthly interest rate, and n is the number of payments.
This is the standard payment formula for a fully amortizing, fixed-rate installment loan. It is the same time-value-of-money approach behind common spreadsheet functions such as Microsoft Excel's PMT function: constant payments, constant interest rate, and a zero balance after the final scheduled payment.
For U.S. consumer credit, APR disclosure is governed by Regulation Z. This calculator does not compute a legal APR disclosure; it uses the APR you enter as the annual rate and converts it to a monthly rate for a planning estimate.
Worked example
What the 72-month default estimate means.
With a $35,000 vehicle price, $5,000 down payment, $3,000 trade-in credit, $2,400 financed taxes and fees, and a 72-month loan at 6.98% APR, the amount financed is $29,400.
That produces an estimated payment of about $501 per month and about $6,669 in total interest if all scheduled payments are made.
| Vehicle price | $35,000 |
|---|---|
| Down payment | -$5,000 |
| Trade-in credit | -$3,000 |
| Taxes and fees financed | +$2,400 |
| Amount financed | $29,400 |
| Estimated monthly payment | $501 |
| Estimated total interest | $6,669 |
Term comparison
72 months lowers payment, but interest lasts longer.
Using the same $29,400 amount financed and 6.98% APR, a 72-month term lowers the estimated monthly payment compared with 60 months. The tradeoff is that interest accrues for an extra year.
| 60-month estimate | $582/mo |
|---|---|
| 60-month total interest | $5,513 |
| 72-month estimate | $501/mo |
| 72-month total interest | $6,669 |
In this example, the 72-month term lowers the payment by about $81 per month, but adds about $1,156 in total interest. That is the core tradeoff to review before choosing a longer term.
Methodology
Transparent assumptions.
What is included
Vehicle price, down payment, trade-in value, trade-in loan payoff, APR, loan term, and any taxes or fees you choose to finance.
Default APR
The default 6.98% APR is a U.S. national reference rate for a 60-month new-car loan reported by WSJ Buy Side using Bankrate data in June 2026. It is used only as a starting point for the calculator.
Your actual APR can be higher or lower based on credit score, income, lender, vehicle age, down payment, loan term, state, dealer incentives, and the date you apply.
What is not included
Insurance, registration renewal, fuel, maintenance, repairs, depreciation, late fees, lender fees not entered, or dealer add-ons.
How to use the result
Use the estimate to compare scenarios. Verify actual terms with lenders before making a purchase decision.
Why estimates can differ
Lenders may calculate APR, fees, first payment timing, rebates, taxes, and rounding differently. Your contract and Truth in Lending disclosures control the actual cost of credit.
Sources
Reference data used on this page.
Default APR reference
The starting APR is based on a U.S. national average for a 60-month new-car loan reported by WSJ Buy Side using Bankrate rate data in June 2026.
This is not a local rate, personalized quote, lender approval, or legal APR disclosure. Replace it with your own quoted APR whenever you have one.
Formula reference
The payment calculation uses the standard fixed-rate amortization formula, the same constant-payment structure used by spreadsheet PMT functions.
FAQ
72-month auto loan questions.
Is a 72-month auto loan a good idea?
A 72-month auto loan can make the monthly payment lower than a 60-month loan, but it usually increases total interest and keeps the balance outstanding longer. Compare total interest before choosing the term.
How do you calculate a 72-month car payment?
Use the standard fixed-rate amortization formula with the amount financed, monthly interest rate, and 72 monthly payments. The calculator does this automatically as inputs change.
Does a 72-month loan cost more than a 60-month loan?
Usually yes if the APR and amount financed are the same. The payment is spread over more months, but interest has more time to accrue.
How much should I put down on a car?
Many buyers aim for at least 10-20% down when possible. A larger down payment lowers the amount financed and may reduce interest costs.
Does this calculator include insurance?
No. This calculator estimates loan payments only. Insurance, fuel, maintenance, registration, and depreciation should be considered separately.
Can trade-in value reduce a 72-month payment?
Yes. Positive trade-in equity lowers the amount financed. If your payoff is higher than your trade-in value, negative equity can increase the loan balance instead.
How does a trade-in affect a car loan?
A trade-in credit reduces the amount financed when it is applied to the purchase. If you owe money on the trade-in, subtract the payoff from the trade-in value first. If the result is negative, that negative equity may increase the new loan.
How do I calculate a car payment with trade-in?
Start with the vehicle price, subtract your down payment and net trade-in equity, then add any taxes and fees you plan to finance. The calculator applies the APR and loan term to that amount financed.
What if I still owe money on my trade-in?
Enter the remaining payoff as trade-in loan payoff. If payoff is higher than trade-in value, the old-loan shortfall may be included in the amount financed. Use the negative equity car loan calculator for that scenario.
Can this help with bad credit car loan planning?
It can help you test higher APR scenarios. Bad credit loans may have higher rates, fees, or down payment requirements, so compare lender quotes carefully.
More trade-in guides