Amortization Schedule

An amortization schedule is a detailed table showing every payment over the life of a loan, broken down into principal and interest components. Each row represents a single payment period (typically monthly) and shows how much of your payment goes toward reducing the loan balance versus paying interest charges. The schedule also displays the remaining loan balance after each payment. Amortization schedules are essential for understanding the true cost of a mortgage and for planning strategies like extra payments to pay off the loan faster.

Making extra payments on your mortgage directly reduces the principal balance, which has a compounding effect on interest savings. When you pay down the principal faster, less interest accrues in subsequent months because interest is calculated on the remaining balance. Even modest extra payments — such as an additional $100 or $200 per month — can shave years off your loan term and save tens of thousands of dollars in total interest paid. The earlier you start making extra payments, the greater the impact, because you are reducing the balance during the period when the most interest would otherwise accumulate.

Mortgage interest is calculated on the outstanding principal balance each month. At the beginning of a loan, the balance is at its highest, so a large portion of each monthly payment goes toward interest rather than reducing the principal. As you make payments over time and the balance decreases, the interest portion shrinks and more of your payment goes toward principal. For example, on a $300,000 loan at 6.5% for 30 years, roughly 70% of your first payment goes to interest. By the final years of the loan, nearly all of each payment applies to principal.