Car Loan Payoff Calculator

Accelerated Car Loan Payoff

Car loans are amortized monthly, meaning a portion of each payment goes toward interest, and the remainder reduces the principal balance. By paying extra each month or contributing a lump sum, you directly reduce the principal balance, which in turn decreases the interest charged in all future months.

The Amortization Formula

The standard monthly payment is computed using the following amortization formula:

Where:

• $PMT$ is the monthly payment.
• $P$ is the principal loan balance.
• $r$ is the monthly interest rate (annual rate divided by 12).
• $n$ is the total number of payments (term in months).

Interest for any month $t$ is calculated based on the remaining balance:

Where $B_{t-1}$ is the starting balance for that month. The principal reduction is then:

Adding extra payments accelerates the principal reduction, allowing you to pay off the balance in fewer months and save on interest.

Why Pay Off Your Car Loan Early?

There are several advantages to clearing your auto debt early:

• Interest Savings: Every dollar of interest saved is money kept in your pocket.
• Free Up Cash Flow: Eliminating a monthly payment increases your monthly disposable income.
• Outrun Depreciation: Cars lose value quickly. Paying off the loan faster prevents you from being "upside down" or owing more than the car is worth. You can check your car value trend using our Car Depreciation Calculator.