Amortization Schedule Calculator

What is an Amortization Schedule?

When you take out a loan—whether it's for a house, a car, or a personal expense—your monthly payment is typically a fixed amount. However, the composition of that payment changes over time. This process is called Amortization.

An Amortization Schedule is a comprehensive table that details every periodic payment on a loan. It breaks down each payment into two components:

1. Interest: The cost of borrowing money for that period.
2. Principal: The portion of the payment that reduces the loan balance.

The "Front-Loaded" Interest Effect

One of the most surprising things borrowers discover using this calculator is how interest-heavy the early payments are.
Because interest is calculated based on the outstanding balance, and your balance is highest at the start, your initial payments go primarily toward interest. As the balance decreases, the interest portion shrinks, and more of your money goes toward paying off the debt (principal).

How Calculations Work

To generate the schedule, we perform the following steps for each period:

Real-World Example

Imagine a $20,000 car loan with a 5-year term at 6.5% interest.

• Payment #1: You pay roughly $391. Out of this, ~$108 goes to interest, and only ~$283 reduces your debt.
• Payment #30 (Midway): You still pay $391. But now, only ~$60 goes to interest, and ~$331 reduces debt.
• Payment #60 (Last one): You pay $391. Only ~$2 is interest, and ~$389 clears the final debt.

This calculator helps you visualize this curve and plan for early payoffs if your lender allows it without penalty.