Auto Loan Calculator
Know your true monthly car payment, including tax and interest, before you walk onto the lot.
About the Auto Loan Calculator
This Auto Loan Calculator is a comprehensive Excel workbook designed for car buyers and finance professionals who need to evaluate vehicle financing options. It features two professionally formatted sheets: a main calculator where you enter the vehicle price, down payment, sales tax rate, interest rate, and loan term, and a detailed Amortization Schedule that breaks down all 60 monthly payments showing principal, interest, and remaining balance. Built-in data validation ensures accurate inputs, while interactive line charts visualize your loan balance and cumulative interest over time. Conditional formatting highlights negative values in red for instant alerts. For comparing broader loan options side by side, see the general Loan Calculator.
Auto Loan Calculator Features
- Vehicle price, down payment, sales tax rate, and interest rate inputs
- Detailed 60-month amortization schedule with principal and interest breakdown
- Interactive line charts for loan balance and cumulative interest
- Data validation ensures accurate inputs with red alerts for negatives
- Two professionally formatted sheets: calculator and amortization
How to Use This Auto Loan Calculator in Excel
- 1
Enter vehicle details
Input the vehicle price, down payment amount, and applicable sales tax rate on the main calculator sheet.
- 2
Set loan terms
Enter the annual interest rate and loan term to calculate your monthly payment amount.
- 3
Review amortization
Navigate to the Amortization Schedule sheet to see all 60 payments broken down by principal, interest, and remaining balance.
- 4
Compare with charts
Use the line charts to visualize how your loan balance decreases and cumulative interest grows over the loan term.
Auto Loan Calculator FAQ
- Does this calculator include sales tax?
- Yes, enter your local sales tax rate and it's factored into the total loan amount before calculating monthly payments and the amortization schedule.
- Can I change the loan term from 60 months?
- The amortization schedule is built for 60 months, but you can adjust the loan term input on the calculator sheet to model different payment scenarios.
- How is the down payment handled?
- The down payment is subtracted from the vehicle price plus sales tax to determine the financed amount, which is then used for all payment and interest calculations.
