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Mortgage Amortization Calculator

Watch principal vs interest shift across the life of your loan.

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An amortization schedule shows how each payment splits between principal and interest and how your balance declines over time. Early payments are mostly interest; late payments are mostly principal. The Amortization tab lays it out year by year.

How this calculator works

Enter your numbers and the monthly payment recalculates instantly — no submit button, no page reload. The payment breakdown separates principal, interest, taxes, insurance, PMI and HOA. Use the tabs to view a full amortization schedule, compare scenarios side by side, or work backward from a monthly budget. Your inputs are encoded in the page link so you can bookmark or share a scenario without any account.

Frequently asked questions

What is an amortization schedule?

A table showing every payment's split between principal and interest and the remaining balance, from month one to payoff.

Why is early-loan interest so high?

Interest is charged on the outstanding balance, which is largest at the start — so early payments are mostly interest and shift toward principal over time.

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