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How to Calculate Car Payment: Step-by-Step Guide

Manual car loan calculation guide

跳过数学——使用计算器

分步说明

1

Determine the Principal Loan Amount

First, calculate the principal loan amount by subtracting the down payment from the vehicle price. For example, if the vehicle price is $30,000 and the down payment is $5,000, the principal loan amount would be $25,000.

2

Calculate the Monthly Interest Rate

Next, calculate the monthly interest rate by dividing the annual interest rate by 12. For example, if the annual interest rate is 6%, the monthly interest rate would be 0.06 / 12 = 0.005.

3

Determine the Number of Payments

Then, calculate the number of payments by multiplying the loan term in years by 12. For example, if the loan term is 5 years, the number of payments would be 5 x 12 = 60 months.

4

Apply the Formula

Now, plug in the values into the formula: M = 25000 [ 0.005(1 + 0.005)^60 ] / [ (1 + 0.005)^60 - 1]. Using a calculator, you can solve for M, which is approximately $483.32.

5

Calculate Total Interest Paid

Finally, to calculate the total interest paid, multiply the monthly payment by the number of payments and subtract the principal loan amount. For example, $483.32 x 60 = $28,999.20, and subtracting the principal loan amount, $28,999.20 - $25,000 = $3,999.20 in total interest paid.

6

Using the Calculator for Convenience

While manual calculation is possible, using a car payment calculator can be more convenient and less prone to errors. Simply enter the vehicle price, down payment, loan term, and interest rate, and the calculator will provide the monthly payment and total interest paid.

Introduction to Car Payment Calculation

To calculate your monthly car loan payment, you'll need to know the vehicle price, down payment, loan term, and interest rate. This guide will walk you through the steps to perform this calculation manually.

Understanding the Formula

The formula for calculating monthly car loan payments is:

M = P [ i(1 + i)^n ] / [ (1 + i)^n - 1]

Where:

  • M = monthly payment
  • P = principal loan amount (vehicle price - down payment)
  • i = monthly interest rate (annual interest rate / 12)
  • n = number of payments (loan term in months)

Step-by-Step Calculation

To calculate your monthly car loan payment, follow these steps:

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