Question 1

What is mortgage amortization?

Accepted Answer

Amortization is the process of paying off your mortgage through regular monthly payments over time. Each payment is split between interest (the lender's charge for the loan) and principal (reducing your balance). In the early years, most of your payment goes to interest — this shifts toward principal over time.

Question 2

How much of my early payments go to interest?

Accepted Answer

In the early years of a 30-year mortgage, roughly 70–80% of each payment goes to interest. On a $300,000 loan at 7%, your first payment of about $1,996 includes approximately $1,750 in interest and only $246 in principal. This ratio gradually shifts over the life of the loan.

Question 3

Does making extra payments reduce my loan term?

Accepted Answer

Yes, significantly. Making even one extra payment per year on a 30-year mortgage can cut 4–5 years off your loan. Applying a lump sum to principal reduces your balance, which means less interest accrues on all future payments.

Question 4

What's the difference between a 15-year and 30-year mortgage?

Accepted Answer

A 15-year mortgage has higher monthly payments but you pay far less total interest — typically 40–50% less. A 30-year mortgage has lower monthly payments, giving you more cash flow flexibility. Your choice depends on your financial goals and how long you plan to stay in the home.

Question 5

How do I use the amortization schedule?

Accepted Answer

Enter your loan amount, interest rate, and term. The calculator generates a month-by-month table showing your payment, interest portion, principal portion, and remaining balance. You can also add extra monthly or lump-sum payments to see how they affect your payoff date.

Amortization Calculator

Mortgage Amortization Calculator

Early Payments: Interest Heavy

Mid-Loan: Shifting Balance

Final Years: Mostly Principal

Frequently Asked Questions