RediCalc.com
Last updated: June 1, 2026

Car Loan Calculator: Monthly Payment Estimator

Calculate your monthly car payment based on loan amount, interest rate, and term length. See the total cost of the loan including interest, and understand how different terms affect your payment.

Loan Details

Loan Summary

Monthly Payment$489.15
Loan Amount$25,000
Total Interest$4349.22
Total Cost$29349.22
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Understanding the Car Loan Calculator

A car loan calculator estimates your monthly auto payment and total interest from the loan amount, interest rate, and term. Seeing the full cost — not just the monthly figure — helps you borrow wisely and avoid being talked into a payment that hides an expensive loan.

The trade-off of loan length

A longer term lowers the monthly payment but raises the total interest and keeps you owing more than the car is worth for longer. Since cars depreciate quickly, a long loan increases the risk of negative equity. Choosing the shortest term you can comfortably afford keeps total costs down.

Your rate depends on your credit

Auto loan APRs vary significantly with credit score, so it pays to check your own bank or credit union for pre-approval before visiting the dealership. A bigger down payment reduces the amount financed and the interest you pay, and arms you to negotiate the car’s price rather than just the monthly payment.

Tips & things to know

  • Negotiate the price, not the monthly payment.
  • Get pre-approved to compare against dealer financing.
  • Shorter terms cost less overall and limit negative equity.

Formula

Monthly payments are calculated using the standard amortization formula:

M = P × [r(1+r)ⁿ / ((1+r)ⁿ − 1)]

M = monthly payment, P = principal, r = monthly rate, n = total months

Sources

  • Federal Reserve Board. Consumer credit statistics.

How to Use the Car Loan Calculator

1

Open the Car Loan Calculator

Navigate to the Car Loan Calculator page on Redicalc. The calculator loads instantly with no sign-up required.

2

Enter your values

Fill in vehicle specifications such as engine size, fuel usage, or tire dimensions. Toggle between metric and imperial units if available.

3

Review your results

Your car loan results appear instantly as you type. Review the breakdown, charts, or detailed analysis provided.

4

Adjust and compare

Try different input values to compare scenarios. This helps you understand how changes affect the outcome.

5

Share or save your results

Use the copy or share buttons to save your results. You can also bookmark the page for quick access later.

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Frequently Asked Questions

What is a good interest rate for a car loan?

As of 2026, good rates range from 4-7% for new cars and 5-9% for used cars. Excellent credit scores (740+) qualify for the lowest rates.

Should I choose a longer loan term?

Longer terms mean lower monthly payments but more total interest paid. A 60-month loan costs significantly less in total interest than an 84-month loan.

How much car can I afford?

A common guideline is the 20/4/10 rule: 20% down payment, 4-year loan maximum, and total car expenses under 10% of gross income.

Does down payment affect monthly payment?

Yes. A larger down payment reduces the loan principal, resulting in lower monthly payments and less total interest paid.

Is it better to pay off a car loan early?

Usually yes, as you save on interest. Check that your loan has no prepayment penalty, then make extra payments toward the principal.