Finance Calculator for Auto Loan
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Reviewed by Calculator Editorial Team
This finance calculator for auto loan helps you estimate your monthly payments, total interest, and loan cost. Enter your loan amount, interest rate, and term to see how different loan options compare.
How to Use This Calculator
To use this auto loan calculator:
- Enter the loan amount you want to borrow
- Input the annual interest rate (APR)
- Select the loan term in years
- Click "Calculate" to see your monthly payment and total cost
- Compare different loan options by changing the inputs
The calculator shows your estimated monthly payment, total interest paid, and total cost of the loan. You can also view a payment schedule chart.
Formula Used
The monthly payment for an auto loan is calculated using the standard loan payment formula:
Monthly Payment = P × (r(1 + r)n)/( (1 + r)n - 1)
Where:
- P = Principal loan amount
- r = Monthly interest rate (APR/12/100)
- n = Number of payments (loan term in years × 12)
Total interest paid = (Monthly Payment × n) - P
Total cost of loan = Monthly Payment × n
Worked Example
Let's calculate a $25,000 auto loan at 4.5% APR for 5 years:
- Principal (P) = $25,000
- Annual interest rate = 4.5%
- Monthly interest rate (r) = 4.5%/12/100 = 0.00375
- Number of payments (n) = 5 × 12 = 60
- Monthly payment = $25,000 × (0.00375(1 + 0.00375)60)/( (1 + 0.00375)60 - 1) ≈ $454.23
- Total interest = ($454.23 × 60) - $25,000 ≈ $1,641.80
- Total cost = $454.23 × 60 ≈ $26,654.80
This example shows that borrowing $25,000 at 4.5% APR for 5 years would result in monthly payments of approximately $454.23, with $1,641.80 in interest and a total cost of about $26,654.80.
Loan Comparison
Compare different auto loan options using this table:
| Loan Amount | Interest Rate | Term (Years) | Monthly Payment | Total Interest | Total Cost |
|---|---|---|---|---|---|
| $20,000 | 4.0% | 4 | $476.35 | $1,493.40 | $21,493.40 |
| $20,000 | 5.0% | 4 | $496.06 | $2,242.24 | $22,242.24 |
| $20,000 | 4.0% | 5 | $392.31 | $1,159.80 | $21,159.80 |
| $20,000 | 5.0% | 5 | $411.42 | $1,686.60 | $21,686.60 |
This comparison shows how different interest rates and loan terms affect your monthly payments and total cost. Shorter terms generally result in lower monthly payments but higher total interest, while longer terms may have lower monthly payments but higher total interest.
FAQ
What is the difference between APR and interest rate?
APR (Annual Percentage Rate) is the annual interest rate charged for borrowing money, while the interest rate is the actual percentage used in calculations. APR includes all fees and costs associated with the loan.
How does a longer loan term affect my payments?
A longer loan term typically results in lower monthly payments but higher total interest paid over the life of the loan. Shorter terms may have higher monthly payments but lower total interest.
What is the best interest rate for an auto loan?
The best interest rate depends on your financial situation. Generally, rates below 5% are considered good, while rates above 10% may be too high. Compare offers from different lenders to find the best rate.
Can I pay off my auto loan early?
Yes, you can pay off your auto loan early without penalty in most cases. Early repayment can save you money on interest and help you build your credit score faster.