What amortization actually means
To amortize a loan is to pay it off through regular equal payments, each split between interest on the remaining balance and repayment of the principal. Early on, the balance is large, so most of your payment is interest and little touches the principal. As the balance shrinks, the split flips — later payments are almost all principal. The schedule above makes this shift visible year by year.
The front-loaded interest surprise
On a $300,000 mortgage at 6.5% over 30 years, look at the first year versus the last. In year one, roughly $19,000 of your ~$22,750 in payments goes to interest and only ~$3,400 reduces the balance. By the final year it's the reverse. This is why paying a 30-year mortgage for five years barely dents the balance — and why refinancing resets you to the interest-heavy start of a fresh schedule.
How to use the schedule
- See your equity build. The balance column shows what you still owe; subtract it from the property value to track home equity over time.
- Understand extra payments. Any extra principal payment permanently removes the interest on that amount for the rest of the schedule — try our extra payment calculator to see the effect.
- Compare loans honestly. Two loans with the same payment can have very different total interest depending on term and rate — the schedule totals reveal the real cost.
Beyond mortgages
The same math governs car loans, student loans, and personal loans. Any fixed-rate, fixed-term loan follows an amortization schedule — knowing how to read one turns an opaque monthly bill into a transparent plan you can see the end of.