Auto Loan Amortization Calculator
Plan your auto financing with our free auto loan amortization calculator. Enter the vehicle purchase price, down payment, trade-in value, loan term, and interest rate to see your exact monthly payment and total loan cost.
Formula & Mathematical Methodology
Computes net financing principal by adding sales tax and subtracting cash down payment and vehicle trade-in credit, then applies the standard compound amortization formula.
How to Use This Auto Loan Amortization Calculator
- Enter the sticker or negotiated price of the vehicle.
- Enter your cash down payment and trade-in allowance.
- Select your loan term length in months and financing APR.
- Review your monthly payment, total interest paid, and full purchase cost.
Step-by-Step Worked Example
Scenario: $32,000 car, $4,000 down, $2,000 trade-in, 6% tax, 6.5% APR for 60 months
What Does Your Result Mean?
Represents your fixed monthly auto loan installment including principal amortization and interest.
Common Practical Applications:
- Comparing new vs used car financing options
- Determining affordable vehicle price ranges
- Checking dealer financing offers
Important Limitations & Assumptions:
- Does not include ongoing auto insurance, fuel, DMV registration fees, or maintenance.
Frequently Asked Questions
How does loan term affect total car interest?
Longer loan terms (e.g. 72 or 84 months) lower your monthly payment but significantly increase the total interest paid over the life of the loan.
What is considered a good interest rate on an auto loan?
Rates depend on credit score and market conditions, typically ranging from 4% to 8% for prime credit borrowers on new vehicles.