Below is our car loan calculator: used car financing is preset, at rates 1.5 to 6 points above new for the same credit score. A $25,000 pre-owned sedan with $3,000 down, prime credit and a 60-month loan term costs $501 a month and $6,211 in interest, which is $1,720 more interest than the identical balance at the new car rate. That gap, plus lender age and mileage rules, is what this page prices out.
The loan payment calculator opens with Used selected. Enter the purchase price, trade-in value, down payment and state, then pick a credit score range or type a quoted interest rate, with terms from 36 months up to 84. It returns the auto loan payment, the loan amount after tax and dealer fees, total interest and a yearly payoff summary.
Car Loan Calculator by State
Enter the price, your down payment and trade-in, the state where you will register it, a credit range or quoted APR and the term. You get the monthly payment with sales tax and dealer fees rolled in, the amount financed, the total interest and a year by year payoff summary.
Your Payment Estimate
Estimates only, not a quote or an offer of credit. Built from September 2026 planning figures: statewide vehicle sales tax rates and trade-in rules, typical dealer documentation fees and state caps, state title fees, and average APRs by credit range for new and used financing. Local add-on sales taxes, registration, dealer add-ons and the rate a lender actually offers will move the real number.
Estimate Your Monthly Car Loan Payment: $25,000 Pre-Owned at 9.50%
Inputs: no trade, no state chosen (national average tax and fees), prime credit, 60 months, taxes and fees rolled in.
| Line | Amount |
|---|---|
| Vehicle price | $25,000 |
| Sales tax at 5.75 percent | $1,438 |
| Dealer documentation and title fees | $440 |
| Cash down | -$3,000 |
| Amount financed | $23,878 |
| APR (typical pre-owned rate, 661 to 780 score) | 9.50% |
| Monthly payment | $501 |
| Total interest over 60 months | $6,211 |
| All-in cost: price, tax, fees and interest | $33,088 |
The $6,211 is the cost of borrowing. Rolling the $1,878 of tax and fees into the loan adds $488 of it.
Inside the Car Loan Calculator: Used Car Payment Formula
Every auto loan calculator runs the same amortization formula: M = P × r(1 + r)^n ÷ ((1 + r)^n – 1). P is the loan amount, r is the monthly interest rate (APR divided by 12) and n is the loan term in months. With P at $23,878, r at 0.0079167 and n at 60, M comes to $501.48.
Interest is charged on the remaining balance, so it is front-loaded. Of the first $501 payment, $189 is interest and $312 is principal. Year one alone costs $2,101 of the $6,211, and the balance after 12 payments is still $19,961. The car loan amortization calculator prints that split month by month.
Two practical uses of the formula:
- Back out a dealer’s rate. If a finance office quotes $520 a month on that same $23,878 over 60 months without naming the APR, the implied interest rate is about 11.07 percent, not 9.50. Raise the rate in the calculator until the monthly payment matches the quote.
- Check the trade. Trade-in value comes off the price before the loan amount is set, and in most states it also lowers the taxable price. If you owe more on the current vehicle than it is worth, that negative equity is added to the new balance, and on an older vehicle it can push the loan past what the lender will advance against the vehicle’s value. The car loan trade-in calculator runs both cases.
Used vs New Auto Loans: The Rate Gap Grows as Credit Falls
The pre-owned premium grows at every tier. Same $23,878 over 60 months at the calculator’s rates, with Experian’s Q2 2026 pre-owned average for reference:
| Credit score | New APR | Used APR | Experian pre-owned average | Payment, new / used | Extra interest, used |
|---|---|---|---|---|---|
| 781 to 850 | 5.50% | 7.00% | 6.29% | $456 / $473 | $1,003 |
| 661 to 780 | 7.00% | 9.50% | 8.81% | $473 / $501 | $1,720 |
| 601 to 660 | 10.00% | 14.00% | 13.93% | $507 / $556 | $2,896 |
| 501 to 600 | 13.50% | 19.00% | 19.10% | $549 / $619 | $4,198 |
| 300 to 500 | 16.00% | 22.00% | 21.62% | $581 / $659 | $4,729 |
At 781 and up, a pre-owned borrower pays the 7.00 percent a 661 to 780 borrower pays on new, and the dollar penalty nearly quintuples from top row to bottom.
Headline averages exaggerate the gap. Experian put Q2 2026 at 6.35 percent new and 11.19 percent pre-owned, yet at prime the difference in interest rate is 2.66 points; the rest is mostly borrower mix (average score 688 pre-owned, 751 new). To price moving up a tier, use the car loan calculator with credit score.
Why a Lender Charges More to Finance an Older Vehicle
Three reasons. Equifax names two: resale value is harder to estimate, so a repossessed vehicle may sell for less than the balance, and older vehicles more often need repairs that compete with the payment. The third is subsidy. Manufacturer finance arms buy down rates on current models to move inventory; nobody subsidizes a 2019 sedan.
Age and Mileage Limits on Pre-Owned Financing
Before rate comes eligibility. As Kelley Blue Book notes, age and mileage caps differ widely by type of institution.
| Institution (example) | Vehicle age limit | Mileage limit | What happens past it |
|---|---|---|---|
| National banks (general guideline) | About 10 model years | About 125,000 | Declined |
| Oregon credit union, 2026 rate sheet | 8 model years at standard pricing | 100,000 at standard pricing | 1.00 point added to the rate |
| California credit union | 18 years or newer | 120,000 | Declined; no branded titles |
| Specialty lenders | Up to about 20 years | Under 150,000 | Higher rates |
That extra point on the $23,878 example means 10.50 percent: $513 a month and $705 more interest. The same sheet also cuts the other way, pricing models four years old or newer at its new-vehicle rate. That model-year line is the detail borrowers most often miss: at the same credit score, a three-year-old sedan can get the lower pricing while a nine-year-old one pays the surcharge.
Keep the Term Short on a Vehicle That Is Already Aging
An older vehicle wears out sooner, so a long loan risks owing on one that needs a transmission. Same $23,878 at 9.50 percent:
| Loan term | Monthly payment | Total interest |
|---|---|---|
| 36 months | $765 | $3,658 |
| 48 months | $600 | $4,917 |
| 60 months | $501 | $6,211 |
| 72 months | $436 | $7,540 |
| 84 months | $390 | $8,904 |
Stretching 60 months to 84 cuts $111 from the payment and adds $2,693 of interest. Even so, 29.68 percent of pre-owned financing in Q2 2026 ran from 73 months to 84 (average term 67.86 months). The Oregon sheet stops pre-owned terms at 72 months, against 84 for new.
A $30,000 Sedan or a $21,000 One: What the Loan Changes
A higher rate on a smaller balance can cost nearly the same interest. A new $30,000 midsize sedan at 7.00 percent against a one to three year old $21,000 one at 9.50 percent, both $3,000 down over 60 months:
- New: $29,165 financed, $578 a month, $5,485 interest.
- Pre-owned: $19,648 financed, $413 a month, $5,111 interest.
The payment drops $165 but interest only $374. The real saving is depreciation: about $15,451 over five years on the $30,000 sedan against $8,607, per the cost of car ownership calculator.
Certified pre-owned is the rate exception. One luxury brand’s manufacturer program offered qualified buyers 3.99 percent for 36 months on 2023 to 2025 certified models, through November 2, 2026: $1,497 of interest on the example balance, against $3,658 at 9.50 percent. Before any car purchase, see the new vs used vs certified pre-owned comparison for five-year totals.
Put your own numbers into the car loan calculator used car buyers see at the top, then get a preapproval from a bank before visiting the dealer; a quoted rate turns this estimate into a number to negotiate against. The loan calculator by state covers each state’s tax and doc fee.
Pre-Owned Auto Loan Questions
How much is a $30,000 used car loan?
At the 9.50 percent prime rate with nothing down and the $2,165 of tax and fees paid at signing: $630 a month and $7,803 of interest over 60 months, $548 and $9,473 over 72, or $490 and $11,187 over 84.
How much is a $40,000 car payment for 60 months?
About $840 a month at the 9.50 percent pre-owned prime rate, with $10,404 of interest, if the full $40,000 is financed and tax is paid separately. At the 7.00 percent new-vehicle rate for the same tier, it is $792 a month and $7,523 of interest.
What’s a good auto loan rate for a used car?
An interest rate at or below Experian’s Q2 2026 average for your tier: 6.29 percent at 781 and up, 8.81 at 661 to 780, 13.93 at 601 to 660.
How long can a pre-owned auto loan run?
Maximums run from 72 months to 84. The Oregon sheet above stops at 72; the California one goes to 84.
Can you get a car loan for a car with over 100,000 miles?
Yes, but fewer institutions write it. The California credit union caps at 120,000 miles, the Oregon one adds a point past 100,000, and specialty lenders go to about 150,000.
Can you pay off a pre-owned auto loan early?
Usually, yes. Most auto loans are simple-interest loans, so extra money sent toward principal cuts the interest charged in every later month. Read the contract for a prepayment penalty first, and use the car loan payoff calculator to see the saving.
Are car payment calculators accurate?
The math is exact; the inputs are not. Replace the typical rate with a real preapproval quote once you have one.
Estimates only, not a quote or credit offer. Rates are 2026 planning averages for pre-owned financing; the lender reviewing your application and the vehicle sets the real APR, term and approval. Last reviewed: October 2026.