Auto Loan Biweekly Payment Calculator

Biweekly auto loan payments can save you money on interest over the life of your loan. This calculator helps you determine exactly how much you'll pay each two weeks and how much you'll save compared to monthly payments.

How Biweekly Payments Work

Biweekly payments are made every two weeks instead of monthly. This approach has several advantages:

More frequent payments reduce the principal balance faster
Interest is calculated on a smaller balance more often
You can pay off the loan earlier than with monthly payments
Some lenders offer lower interest rates for biweekly payers

Note: Not all lenders offer biweekly payment options. Check with your lender to see if this is available for your loan.

How It Compares to Monthly Payments

The key difference is in how interest is calculated. With monthly payments, you pay interest on the full balance for the entire month. With biweekly payments, you pay interest on a smaller balance for two weeks, then again on the reduced balance for the next two weeks.

Potential Downsides

While biweekly payments can save money, they may not be right for everyone:

You'll make more payments over the life of the loan
Some lenders may charge fees for biweekly payments
Your budget may not accommodate more frequent payments

The Formula Explained

The biweekly payment amount is calculated using the standard loan payment formula, but with a different payment frequency:

Biweekly Payment = P × (r × (1 + r)^n) / ((1 + r)^n - 1)

Where:

P = Principal loan amount
r = Monthly interest rate / 2 (since payments are biweekly)
n = Total number of biweekly payments (loan term in years × 26)

This formula accounts for the fact that biweekly payments are made 26 times a year (52 weeks ÷ 2) rather than 12 times a year.

Worked Examples

Example 1: $20,000 Loan at 4.5% APR

For a $20,000 loan with a 4.5% APR over 5 years:

Monthly payment: $362.47
Biweekly payment: $181.24
Total interest paid: $1,812.35 (monthly) vs $1,750.12 (biweekly)
Interest savings: $62.23

Example 2: $30,000 Loan at 5.25% APR

For a $30,000 loan with a 5.25% APR over 6 years:

Monthly payment: $524.38
Biweekly payment: $262.19
Total interest paid: $3,148.28 (monthly) vs $3,056.04 (biweekly)
Interest savings: $92.24

Frequently Asked Questions

How much can I save with biweekly payments?

The savings vary by loan amount, interest rate, and term. Typically, you can save $50-$150 per year on interest by switching to biweekly payments. Use our calculator to get an exact estimate for your loan.

Will my lender allow biweekly payments?

Not all lenders offer biweekly payment options. Check with your lender to confirm if this is available for your loan type. Some auto lenders may require special approval.

Do I need to make extra payments to see savings?

No, biweekly payments are calculated to include the same total number of payments as monthly payments. The difference is in how often you make payments rather than how much you pay.

What if I miss a biweekly payment?

Missing a payment could result in late fees and may affect your credit score. If you can't make a biweekly payment, contact your lender immediately to discuss options.