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Auto Loan Calculator: Estimate Monthly Car Payments

Written by Calcida Team
Reviewed for accuracy and clarity
Last updated: April 2026

Plan your next vehicle purchase with confidence. Our auto loan calculator helps you estimate monthly payments by combining the vehicle price, your down payment, trade-in value, and financing terms.

Use this tool before heading to the dealership to understand your borrowing power and ensure your new car fits comfortably within your monthly financial plan.

Need to compare offers? Check out our Loan Calculators hub.

Auto Loan Calculator

Estimated Monthly Payment

$377
Total Interest: $2,645

Total Cost Breakdown

Can you afford this car?

Check if the payment fits your budget.

How This Calculator Works

This calculator helps you understand the monthly cost of a car purchase by factoring in the vehicle price, your down payment, any trade-in value, and the financing terms.

The Simple Breakdown:

  1. Total Loan Amount: Price minus down payment and trade-in value.
  2. Interest Calculation: The monthly interest rate is applied to your remaining balance each month.
  3. Monthly Payment: A fixed amount that covers both principal and interest, ensuring the loan is zeroed out by the end of the term.

Formula

M = P × [ i(1 + i)^n ] / [ (1 + i)^n − 1 ]
Where:
  • P = loan amount (price − down payment)
  • i = monthly interest rate
  • n = number of monthly payments
  • M = monthly payment

Example Calculation

Calculating the math for a typical mid-sized SUV purchase:

  • Vehicle Price: $35,000
  • Down Payment: $5,000
  • Trade-in Value: $2,000
  • Loan Amount: $28,000
  • Interest Rate (APR): 6.0%
  • Loan Term: 60 Months (5 Years)
  • Monthly Payment: ~$541.32

*Total interest paid over the life of this loan would be approximately $4,479.

Watch Out for Total Loan Cost

When dealerships focus solely on the "monthly payment," it's easy to overlook the total cost. Extending a loan from 60 months to 84 months can make a car feel affordable today, but you could end up paying thousands more in interest and owing more than the car is worth for several years.

Check Your Car Budget

Before you head to the dealership, run the numbers through these related tools to ensure the purchase is sustainable:

Frequently Asked Questions

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