How to use it
- Enter the loan amount you need.
- Input the annual interest rate (APR).
- Select the loan term in years and hit calculate.
What it does – The Nerdwallet Auto Loan Calculator takes the loan amount, APR, and term you enter and instantly shows three key figures: your monthly payment, the total interest you’ll pay over the life of the loan, and the grand total of all payments. Why it matters – Knowing the monthly cost helps you budget, while the total interest reveals how much the loan costs you beyond the sticker price. How to read it – The monthly payment is the amount you’ll owe each month. The total interest is the sum of all interest charges. The total of payments is simply the loan amount plus that interest. Use these numbers to compare offers, decide on a loan length, or see the impact of a lower rate. You can also tweak the rate or term to see how small changes affect your overall cost.
Pro tips
- Add a small buffer for taxes or dealer fees when budgeting.
- Round up the monthly payment to avoid under‑budgeting.
- Test shorter terms first to see how much interest you can save.
- Make sure the APR you enter is the annual rate, not a monthly figure.
Real-life examples
- Comparing two dealership offers to pick the cheaper monthly payment.
- Planning a budget for a new car while keeping total interest under a target.
- Deciding whether to refinance an existing auto loan after a rate drop.
Case study
Maria wanted a $20,000 car loan but wasn’t sure how much she’d pay monthly. Using the calculator, she entered a 4.5% rate for 5 years and saw a $368 payment and $4,100 total interest. She then tried a 3‑year term, realized the interest dropped to $2,300, and chose the shorter loan to save $1,800.