What’s the difference between APR and interest rate?

APR includes certain lender fees; the raw interest rate doesn’t. Compare offers using APR for an apples-to-apples number.

How much down payment should I put?

At minimum, enough to avoid being underwater when you drive off. New cars depreciate 10-20% immediately; 20% down protects you.

What happens if I can't make my auto loan payment?

Late fees kick in at 10-15 days late, typically $25-50. After 30 days late, the lender reports to credit bureaus, dropping your score 60-110 points. After 60-90 days, repossession process starts; the lender takes the car (value of which is usually less than the remaining loan balance), sells it at auction, and pursues you for the deficiency balance. Voluntary repossession (you surrender the car) is slightly better than involuntary on credit reports but still wrecks your credit for 7 years. If struggling: contact lender immediately to negotiate forbearance or modified payment terms.

Should I refinance my auto loan?

Refinance if rates have dropped 1.5-2%+ since you originated, your credit score has improved 50-100+ points, or you can shorten the term while keeping the same payment. Avoid: refinancing into a longer term (extends total interest), refinancing if you're underwater (loan exceeds car value — most lenders won't do this anyway), or refinancing for a tiny rate improvement (closing costs, if any, eat the savings). Use a credit union for best refi rates; PenFed, Navy Federal, and Alliant typically beat banks by 1-2%.

Is gap insurance worth it on a financed car?

If your down payment is under 20% on a new car, yes — strongly recommended. New cars lose 20-30% in year 1, so you're underwater for most of the first year. If totaled in an accident, regular auto insurance pays the car's current value (which is less than your loan); gap insurance covers the difference. Cost: $200-700 from dealer (negotiable), $20-40/year from your auto insurer (usually cheaper). Cancel gap insurance once your loan balance drops below the car's value (usually year 2-3).

Should I trade in my old car or sell it privately?

Private sale typically yields 10-20% more than trade-in value (Kelly Blue Book private vs. trade-in). On a $15K car, that's $1,500-3,000. Trade-in advantage: convenience, immediate use as down payment, and in most states, you only pay sales tax on the difference between new car price and trade-in (sales tax savings of $500-1500 on a $30K new car at 6% sales tax). Run the math: private sale price minus trade-in price minus sales-tax-savings of trade-in. If positive, sell privately; if negative, trade in.

Money & Finance · Free tool

Auto Loan Calculator

Estimate your auto loan payment, total interest, and payoff timeline in seconds. Free, mobile-friendly, no signup.

Updated June 2026

Loan amount ($)

Rate (%)Term (years)

Extra monthly payment ($) (optional — pays down principal faster)

Monthly payment

$480.74

Total paid

$34,613.32

Total interest

$6,613.32

Payoff date

Jun 2032

Payoff timeline

72 mo

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What it does

An auto loan calculator that takes three inputs — amount financed, APR, and term — and returns the full cost of the loan, not just the monthly payment. Most dealer conversations happen in monthly-payment terms, which is exactly why long terms get pushed: a “lower” monthly is often a higher total cost.

Run multiple scenarios side by side. Change only the term, or only the APR, to see where the real money is. Most people overpay by thousands because they only asked about the monthly payment.

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Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.

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Example input & output

Input

Amount financed: $28,000
APR: 7.25%
Term: 6 years

Output

Monthly: $479.69
Total paid: $34,538
Total interest: $6,538

Dropping APR by 2 points (to 5.25%) saves $1,867 over the life of the loan.

How to use it

Enter the amount you’re actually financing (price − down payment − trade-in).
Enter the APR, not the “money factor.”
Set the term; longer = lower monthly, more total interest.
Scan both the monthly and the total interest line.

When to use this tool

Any auto purchase where you’ll finance any part of the price.
Comparing refinance offers on an existing auto loan.

When not to use it

Leases — different math.
Promotional 0% APR deals — no interest, but those loans often require taking a higher price; compare the all-in cost.

Common use cases

Shopping pre-approved APRs from 2-3 lenders.
Weighing whether to put more down (less principal = less interest).
Deciding if a higher sticker price with 0% APR beats a lower price at standard APR.

Frequently asked questions

What’s the difference between APR and interest rate?: APR includes certain lender fees; the raw interest rate doesn’t. Compare offers using APR for an apples-to-apples number.
How much down payment should I put?: At minimum, enough to avoid being underwater when you drive off. New cars depreciate 10-20% immediately; 20% down protects you.
What happens if I can't make my auto loan payment?: Late fees kick in at 10-15 days late, typically $25-50. After 30 days late, the lender reports to credit bureaus, dropping your score 60-110 points. After 60-90 days, repossession process starts; the lender takes the car (value of which is usually less than the remaining loan balance), sells it at auction, and pursues you for the deficiency balance. Voluntary repossession (you surrender the car) is slightly better than involuntary on credit reports but still wrecks your credit for 7 years. If struggling: contact lender immediately to negotiate forbearance or modified payment terms.
Should I refinance my auto loan?: Refinance if rates have dropped 1.5-2%+ since you originated, your credit score has improved 50-100+ points, or you can shorten the term while keeping the same payment. Avoid: refinancing into a longer term (extends total interest), refinancing if you're underwater (loan exceeds car value — most lenders won't do this anyway), or refinancing for a tiny rate improvement (closing costs, if any, eat the savings). Use a credit union for best refi rates; PenFed, Navy Federal, and Alliant typically beat banks by 1-2%.
Is gap insurance worth it on a financed car?: If your down payment is under 20% on a new car, yes — strongly recommended. New cars lose 20-30% in year 1, so you're underwater for most of the first year. If totaled in an accident, regular auto insurance pays the car's current value (which is less than your loan); gap insurance covers the difference. Cost: $200-700 from dealer (negotiable), $20-40/year from your auto insurer (usually cheaper). Cancel gap insurance once your loan balance drops below the car's value (usually year 2-3).
Should I trade in my old car or sell it privately?: Private sale typically yields 10-20% more than trade-in value (Kelly Blue Book private vs. trade-in). On a $15K car, that's $1,500-3,000. Trade-in advantage: convenience, immediate use as down payment, and in most states, you only pay sales tax on the difference between new car price and trade-in (sales tax savings of $500-1500 on a $30K new car at 6% sales tax). Run the math: private sale price minus trade-in price minus sales-tax-savings of trade-in. If positive, sell privately; if negative, trade in.

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