Loan Amortization Calculator

Generate the complete payment schedule for a fixed-rate loan, showing payment, principal, interest and balance every month. Add an extra monthly payment to see how much interest you save and how many months earlier the loan is paid off, then download the whole schedule as CSV.

How to use the Loan Amortization Calculator

1. Enter the loan amount, interest rate and term.
2. Optionally enter an extra monthly payment toward principal.
3. Press Calculate to see the summary and the schedule.
4. Switch between monthly and yearly views, and download the CSV.

Features

• Month-by-month schedule with principal, interest and balance
• Extra payment comparison: interest saved and time saved
• Monthly and yearly views
• CSV download of the full schedule

Benefits

• See exactly how much of each payment goes to interest
• Decide whether overpaying a loan is worth it

Frequently asked questions

What is amortization?

Amortization is paying a loan off with equal payments over time. Each payment covers that month's interest first, and the rest reduces the balance.

How does an extra payment save money?

Extra money goes straight to principal, so the balance falls faster and less interest is charged in every later month.

Does my lender allow overpayments?

Some loans charge early-repayment fees or limit overpayments, so check your agreement. Results are estimates for planning and education, not financial advice.

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