Mortgage Amortization Schedule
Calculate your full mortgage payment breakdown, monthly payment, total of all payments, and total interest paid over the life of the loan.
About this mortgage amortization schedule
An amortization calculation shows the real cost of a mortgage over its full term, not just the monthly payment, which is often surprising once you see how much total interest accumulates over 15 or 30 years.
How mortgage amortization schedule works
Uses the same standard formula as a mortgage calculator: M = P × [r(1+r)^n] ÷ [(1+r)^n − 1], then multiplies the monthly payment by the total number of payments to get the full picture, principal, total paid, and total interest.
Common uses
- Seeing the true total cost of a mortgage over its full term
- Comparing total interest between a 15-year and 30-year mortgage
- Understanding how much of your payment is principal versus interest
How to use this tool
- Enter the loan amount.
- Enter the annual interest rate.
- Enter the loan term in years.
- See your monthly payment, total payment, and total interest.
What to know before using it
Assumes a fixed interest rate for the full term with no extra payments, actual amortization will differ with an adjustable rate or any extra payments made along the way.
Privacy and browser-first processing
This tool runs entirely in your browser using JavaScript. Nothing you enter is uploaded or stored.
Frequently asked questions
Why is the total interest so much higher than I expected?
Interest compounds over a long term, on a 30-year mortgage it is common for total interest paid to approach or exceed the original loan amount, which is exactly why this breakdown is worth checking before committing.
Does a shorter term always save money?
Generally yes in total interest, a 15-year term usually means a higher monthly payment but substantially less total interest than a 30-year term at the same rate.