Auto Loan Calculator
Calculate your auto loan monthly payments with our comprehensive Auto Loan Calculator. Enter your vehicle price, down payment, trade-in value, interest rate, and loan term to see your monthly payment, total interest, and total cost. Perfect for car buyers comparing financing options, budgeting for a new or used vehicle, or deciding between different loan terms. The calculator includes sales tax calculations and shows you the complete cost breakdown. All calculations happen instantly in your browser with no data storage. Whether you're buying from a dealership or private seller, this tool helps you understand the true cost of your auto loan and make informed financing decisions.
How it works: Enter your vehicle price, down payment, trade-in value, interest rate, and loan term to calculate your monthly auto loan payment. The calculator includes sales tax and shows total interest paid over the life of the loan.
What Is a Car Payment Calculator?
A car payment calculator computes your exact monthly auto loan payment based on the vehicle price, down payment, trade-in value, sales tax, loan term, and interest rate. The result tells you how much you owe each month — but the smarter number to watch is total interest paid over the loan life. Two buyers can drive off the same $35,000 vehicle: one pays $4,200 in interest over 4 years, the other pays $8,900 over 7 years. Same car, same price, $4,700 difference — just from the term length. This calculator surfaces both figures so you can make that comparison before you sign.
How to Use This Car Payment Calculator
Enter the vehicle price (sticker price, not negotiated price — adjust after you know your deal). Add your trade-in value if applicable; this reduces the amount financed dollar-for-dollar. Enter your down payment in cash. The calculator applies your state's sales tax to the vehicle price before subtracting trade-in and down payment — that's how most dealers compute the financed amount. Set your APR (check your bank or credit union before visiting any dealer — pre-approval is leverage). Choose your loan term. The output shows monthly payment, total interest, and total cost including tax.
Worked Example: Priya's $32,000 SUV Purchase
Priya is buying a 2024 Honda CR-V for $32,000. She's trading in her 2019 Civic for $9,500 and putting $2,500 cash down. Ohio charges 5.75% sales tax, adding $1,840 to the purchase. After subtracting trade-in and cash down, her financed amount is $21,840. Her credit union quoted 6.2% APR for 60 months.
Monthly Payment: $422
Loan Amount: $21,840 | Term: 60 months | Rate: 6.2%
Total Interest: $3,480 | True Vehicle Cost: $35,340
The dealer's 8.9% offer on the same loan would have cost $5,120 in interest — $1,640 more for doing nothing
Car Loan Payment Reference Table — Common Vehicle Prices at 7.0% APR
| Car Price | Net Loan | 48-mo Payment | 60-mo Payment | 72-mo Payment | Total Interest (60mo) |
|---|---|---|---|---|---|
| $20,000 | $18,400 | $440 | $363 | $312 | $1,960 |
| $25,000 | $23,000 | $550 | $454 | $390 | $2,440 |
| $30,000 | $27,600 | $660 | $545 | $468 | $2,900 |
| $35,000 | $32,200 | $770 | $636 | $546 | $3,360 |
| $40,000 | $36,800 | $880 | $727 | $624 | $3,820 |
| $50,000 | $46,000 | $1,100 | $909 | $780 | $4,740 |
Assumes $2,000 trade-in, $2,000 down, 6% sales tax. Net loan = price + tax − trade-in − down payment. Actual amounts vary.
Auto Loan Key Concepts: APR, Term, and Negative Equity
APR (annual percentage rate) is the yearly cost of borrowing, expressed as a percentage. On a $25,000 loan, the difference between 5% APR and 9% APR is $54/month — but over 60 months that's $3,240 extra. Always get pre-approved at your credit union or bank before stepping into a dealership; dealers routinely mark up the APR they receive from lenders and pocket the difference.
Negative equity (being "underwater") means you owe more than the car is worth. Cars depreciate roughly 20% in year one and 15% per year after that. A 72-month or 84-month loan on a new car almost guarantees negative equity for years 2–4 because the loan payoff outpaces depreciation. If you trade in a car with negative equity, that balance rolls into your next loan — compounding the problem.
Credit Score vs. Auto Loan Rate — What to Expect
| Credit Score | Typical New Car APR | Monthly ($27,600 / 60mo) | Total Interest |
|---|---|---|---|
| Exceptional (781–850) | 3.5%–5.0% | $499–$521 | $1,940–$3,260 |
| Very Good (661–780) | 5.0%–7.0% | $521–$545 | $3,260–$5,100 |
| Good (601–660) | 7.0%–10.5% | $545–$594 | $5,100–$8,040 |
| Fair (501–600) | 10.5%–15.0% | $594–$657 | $8,040–$11,620 |
| Poor (300–500) | 15.0%–20.0% | $657–$729 | $11,620–$15,140 |
Tips to Get a Better Car Payment — and Mistakes to Avoid
The single most effective thing you can do before buying: get pre-approved by your bank or credit union before visiting any dealer. Dealers make money on financing markup — if your bank offers 6.2% and the dealer shows you 7.9%, you know immediately. Walking in pre-approved also tells the dealer you're serious and saves hours of back-and-forth.
The most common mistake: negotiating the monthly payment instead of the purchase price. A salesperson can stretch a 48-month loan to 72 months and make a $5,000 price increase disappear from the monthly number. Always negotiate the out-the-door price first, then choose your term. Also watch out for dealer add-ons (extended warranties, paint protection, GAP insurance bundled into the loan) — these inflate the loan amount and cost you interest on top of the product price.
Frequently Asked Questions About Car Loan Calculators
What is a good monthly car payment?
Most financial advisors suggest keeping total vehicle expenses (payment + insurance + fuel + maintenance) under 15–20% of monthly take-home pay. On a $5,000/month net income that's $750–$1,000 total. A $450/month car payment with $180 insurance and $150 in gas/maintenance sits right at $780 — workable but tight.
How much car can I afford with a $500/month payment?
At 7% APR over 60 months, a $500/month payment supports a loan of about $25,300. Add your down payment and trade-in to get the maximum vehicle price. If you have $3,000 down and a $6,000 trade-in, your total buying power is roughly $34,300 before tax.
Should I put more money down on a car?
Yes, if you can. A larger down payment shrinks the loan, reduces total interest, and protects you from going underwater quickly. On a $35,000 car, putting $7,000 down instead of $2,000 saves roughly $600 in interest over 5 years and keeps you above water for the full loan term.
Does the loan term affect how much interest I pay?
Dramatically. A $28,000 loan at 7% over 48 months costs $2,100 in interest. The same loan over 72 months costs $6,300 — three times as much. The monthly payment drops $178, but you pay an extra $4,200 for that convenience.
What is a good APR for a car loan?
In 2024–2025, a good new car APR for excellent credit (780+) runs 5%–7%. For used cars, add 1%–2%. Anything below 5% is excellent; above 10% starts to get expensive. If a dealer quotes above 8% and you have decent credit, push back or use your pre-approval.
Can I refinance my car loan for a lower payment?
Yes. If interest rates have dropped or your credit score improved since you got the loan, refinancing can cut your rate and payment. Most lenders refinance loans on cars under 10 years old and under 100,000 miles. The process takes minutes and there are no closing costs like a mortgage refinance.
What is GAP insurance and do I need it?
Guaranteed Asset Protection (GAP) insurance covers the difference between what you owe on the loan and what your car is worth if it's totaled. It's most useful when you financed more than 80% of the car's value, especially on a 72- or 84-month loan. Buy it from your insurance company — dealers typically charge 3–5x more for the same coverage.
Does a larger trade-in value lower my payment?
Yes, directly. Every dollar of trade-in reduces the loan amount one-for-one. A $5,000 trade-in on a 60-month loan at 7% saves $99/month and $440 in total interest. The key is knowing your car's actual market value (check KBB and CarGurus) before walking in — dealers often lowball trade-ins to recapture margin.
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