Auto Loan Calculator
Calculate your monthly new car payment, total interest, affordability check, and full amortization schedule.
| Term | Monthly Payment | Total Interest | Total Cost | Best for |
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Buying a car is one of the biggest financial decisions most Americans make. Before you walk into a dealership or sign a financing agreement, our free auto loan calculator gives you the exact numbers you need — monthly payment, total interest, and a full amortization schedule — in seconds.
Whether you are financing a new vehicle, budgeting for your first car, or comparing loan offers from different lenders, this calculator helps you understand the true cost of your loan before you commit to anything.
TIP: If you are confuse either you should Lease or Finance a new car ? then you can check our Lease vs Buying Calculator
How to Use the Auto Loan Calculator
Using the calculator is straightforward. Enter the following five pieces of information and your results update instantly:
- Vehicle Price — Enter the full purchase price of the vehicle before any tax or fees.
- Down Payment — The cash amount you are paying upfront. Aim for at least 20% on a new vehicle to avoid being underwater on the loan.
- Trade-In Value — If you are trading in a vehicle, enter its current market value. This is applied as a credit toward your purchase.
- Loan Term — Choose how many months you want to repay the loan. Common terms are 36, 48, 60, 72, and 84 months.
- APR (Annual Percentage Rate) — Your interest rate including any lender fees. Use the Credit Score selector to auto-fill the current average rate for your credit tier.
The calculator instantly displays your monthly payment, amount financed, total interest paid, total loan cost, and a full month-by-month amortization table. You can also enter your monthly take-home pay to check whether the payment fits within the recommended 10 to 15 percent of income guideline.
How Your Monthly Auto Loan Payment Is Calculated
Your monthly car payment is determined using the standard loan amortization formula that every bank, credit union, and dealership uses:
| Monthly Payment = [P x r x (1 + r)^n] / [(1 + r)^n – 1] P = Loan Principal | r = Monthly Interest Rate (APR / 12 / 100) | n = Loan Term in Months |
For example, on a $28,000 loan at 7% APR for 60 months:
- Monthly rate (r) = 7 / 12 / 100 = 0.005833
- Monthly payment = $553.92
- Total interest paid = $5,235.20
- Total cost of loan = $33,235.20
The calculator handles this math instantly and also builds a complete amortization schedule showing how every single payment is split between principal and interest over the entire loan period.
5 Factors That Affect Your Monthly Car Payment
1. Vehicle Price
The purchase price is the single biggest factor in your payment. Every $1,000 difference in vehicle price changes your monthly payment by approximately $19 on a 60-month loan at 7% APR. Negotiating the purchase price down before discussing financing is always the most effective way to reduce your payment.
2. Down Payment
A larger down payment reduces the amount you finance, which directly lowers your monthly payment and total interest. Financial experts recommend putting down at least 20% on a new car. On a $35,000 vehicle, a $7,000 down payment (20%) compared to $3,500 (10%) saves approximately $68 per month and over $800 in total interest on a 60-month loan.
3. APR — Your Interest Rate
Your Annual Percentage Rate is the true cost of borrowing. Even a one-percentage-point difference in APR has a significant impact over a five-year loan. On a $28,000 loan for 60 months, the difference between a 6% APR and an 8% APR is roughly $1,300 in total interest paid. Always shop at least three lenders before accepting a rate.
4. Loan Term
Longer loan terms mean lower monthly payments but substantially higher total interest costs. A 72-month loan on $28,000 at 7% APR reduces the monthly payment by about $77 compared to 60 months, but costs an additional $1,500 in interest. Use the Term Comparison table in the calculator to see the exact trade-off for your loan amount.
5. Your Credit Score
Your credit score is the most powerful factor in determining your APR. According to Experian, borrowers with excellent credit (720 and above) qualify for rates starting around 4.66% on new vehicles, while borrowers with poor credit (580 to 619) pay 12% or more. Improving your credit score before applying can save thousands of dollars over the life of an auto loan.
Current Average US Auto Loan Rates by Credit Score
The following rates reflect current averages from Experian and Bankrate for new vehicle financing in the United States. Your actual rate will depend on the lender, loan term, vehicle age, and your complete credit profile.
| Credit Tier | Score Range | New Car APR | Used Car APR | Action |
|---|---|---|---|---|
| Super Prime | 720 – 850 | 4.66 – 5.50% | 6.50 – 7.50% | Qualify for 0% deals |
| Prime | 680 – 719 | 6.50 – 7.50% | 8.50 – 10.00% | Shop 3+ lenders |
| Near Prime | 620 – 679 | 9.00 – 11.00% | 11.00 – 13.50% | Try a credit union |
| Sub-Prime | 580 – 619 | 12.00 – 16.01% | 14.00 – 17.00% | Larger down payment |
| Deep Sub-Prime | 300 – 579 | 14 – 21%+ | 16 – 22%+ | Improve score first |
Source: Experian State of the Automotive Finance Market. Rates are averages and vary by lender and borrower profile.
How Much Car Can You Afford?
Financial advisors consistently recommend two affordability rules for auto loans:
- The 10% Rule: Your monthly car payment should not exceed 10% of your monthly take-home pay. This is the conservative benchmark recommended for buyers who also have other debt obligations.
- The 15% Rule: Your monthly car payment should not exceed 15% of your monthly take-home pay. This is the moderate benchmark used by most financial planning tools.
The Affordability Check section in the calculator above automatically calculates both thresholds based on your monthly income. Enter your take-home pay to see exactly whether your chosen loan fits within a healthy budget.
For a more comprehensive budget check, a common framework is the 20/4/10 rule: put down at least 20%, finance for no more than 4 years, and keep total vehicle costs (payment plus insurance) under 10% of gross income.
TIP: You can use our Car Loan Affordability calculator to plan your monthly budget.
5 Tips to Get the Best Auto Loan Rate in the US
Get Pre-Approved Before the Dealership
Walk into any dealership with a pre-approval letter from a bank or credit union and you immediately have negotiating leverage. Dealers mark up financing rates to earn extra income — a pre-approval sets a rate ceiling that dealer financing must beat. Apply at your bank, a local credit union, and one online lender before your dealership visit.
Apply Within a 14-Day Window
When you apply for auto loan pre-approvals from multiple lenders, do it within a 14-day period. Under most credit scoring models, multiple auto loan hard inquiries within this window are treated as a single inquiry, protecting your credit score while you shop for the best rate.
Consider a Credit Union
Credit unions are not-for-profit financial institutions that consistently offer lower auto loan rates than traditional banks and dealerships. Navy Federal Credit Union, Alliant Credit Union, and many local credit unions offer competitive new and used car loan rates. Membership requirements vary, but many are easy to qualify for.
Negotiate the Vehicle Price Separately
Never discuss monthly payment with a car salesperson until after you have agreed on the total vehicle price. Dealers can manipulate monthly payments by extending the loan term while hiding a high interest rate. Lock in the purchase price first, then discuss financing options separately.
Make a Larger Down Payment
A larger down payment directly reduces your loan amount, lowers your monthly payment, reduces total interest paid, and decreases the risk of being upside-down on the loan as the vehicle depreciates. If you can delay your purchase by three to six months to save for a bigger down payment, the financial benefits are significant.
Which Auto Loan Term Should You Choose?
The loan term you choose has a major impact on both your monthly payment and the total amount you pay. Here is a comparison based on a $28,000 loan at 7% APR:
| Term | Monthly Payment | Total Interest | Total Cost | Verdict |
|---|---|---|---|---|
| 36 months | $865 | $1,155 | $31,155 | Best value |
| 48 months | $670 | $2,170 | $32,170 | Balanced |
| 60 months | $554 | $5,235 | $33,235 | Most popular |
| 72 months | $477 | $6,350 | $34,350 | Higher cost |
| 84 months | $422 | $7,450 | $35,450 | Avoid if possible |
Based on $28,000 financed at 7.0% APR. Use the Term Comparison tool above for your exact numbers.
Financial experts generally recommend choosing the shortest loan term you can comfortably afford. The most popular term in the US is currently 60 months (5 years), but borrowers who can manage the higher payment of a 48-month loan save significantly in total interest.
Financial Disclaimer
The Auto Loan Calculator on this page provides estimates for informational and educational purposes only. Results are calculated using standard loan amortization formulas and average rate data. Actual loan terms, interest rates, fees, and monthly payments will vary based on your credit profile, chosen lender, vehicle details, and applicable state laws. All calculations assume fixed-rate simple interest loans. This tool does not constitute financial advice. Consult a qualified financial advisor or your lender for advice specific to your situation.
FAQ ‘s
Q: What is a good interest rate for an auto loan?
A good auto loan interest rate depends on your credit score. Borrowers with excellent credit (720 and above) can qualify for rates as low as 4.66% on new vehicles. The current national average for new car loans is approximately 7% APR. Any rate below your credit tier average is a good rate. Always compare APRs from at least three lenders before accepting a financing offer.
Q: How much should I put down on a car?
Most financial experts recommend a down payment of at least 20% of the vehicle’s purchase price on a new car and 10% on a used car. A larger down payment lowers your monthly payment, reduces total interest, and protects you from being upside-down on the loan if the vehicle depreciates quickly. If you have a trade-in, its equity value counts toward your down payment.
Q: What is the difference between APR and interest rate?
The interest rate is the annual percentage charged on the loan principal. The APR (Annual Percentage Rate) is the broader measure — it includes the interest rate plus any lender fees or charges rolled into the loan. APR is always equal to or higher than the interest rate. Always compare APRs — not just interest rates — when evaluating loan offers from different lenders.
Q: Is a 72-month auto loan a good idea?
A 72-month loan lowers your monthly payment but costs substantially more in total interest and puts you at risk of being upside-down on the loan. New cars typically depreciate by 15 to 20 percent in the first year. With a 72-month loan and a small down payment, you could owe more than the car is worth for the first two to three years. Only consider a 72-month term if the shorter-term payment is genuinely unaffordable, and plan to pay extra each month when possible.
Q: Does getting pre-approved for an auto loan affect my credit score?
Yes, applying for pre-approval results in a hard inquiry on your credit report, which can temporarily lower your score by a few points. However, if you apply to multiple auto lenders within a 14-day window, most credit scoring models treat all those inquiries as a single hard pull. This allows you to shop for the best rate without significant damage to your credit score.
Q: How do I calculate my monthly car payment?
Use the free Auto Loan Calculator at the top of this page for instant results. If you want to calculate manually, use the formula: Monthly Payment = [P x r x (1+r)^n] / [(1+r)^n – 1], where P is the loan principal, r is the monthly interest rate (annual APR divided by 12 divided by 100), and n is the number of monthly payments. For a $28,000 loan at 7% APR for 60 months, the monthly payment is $553.92.
Q: Can I use this calculator for a used car loan?
Yes. Enter the used vehicle price, your down payment and trade-in value, the estimated APR (used car rates are typically 2 to 4 percentage points higher than new car rates), and your desired loan term. The calculator works identically for new and used vehicle financing. Select your credit tier from the Credit Score dropdown to auto-fill the current average used car rate for your credit profile.
Q: What is an amortization schedule?
An amortization schedule is a table showing every monthly payment over the life of your loan, broken down into the principal and interest components of each payment. Early in your loan, most of your payment goes toward interest. Over time, as you pay down the principal balance, a larger share of each payment reduces the loan. The Full Amortization Schedule section in the calculator above shows this breakdown for every month of your loan.