Amortization Calculator

Loan amount Interest rate (annual %) Term (years) Extra monthly payment (optional)

Monthly payment $0.00

Total interest $0.00

Payoff date —

Monthly Yearly

Month	Payment	Principal	Interest	Balance

<iframe src="https://olltools.com/embed/finance-calc/amortization-calculator" width="100%" height="400" frameborder="0"></iframe>

Free amortization schedule calculator with a one-click CSV download, extra-payment payoff acceleration, and a monthly/yearly view toggle — we checked two popular amortization calculators directly (calculator.net, amortization-calc.com) and neither offers a direct CSV export from the tool itself (one has a vague 'save' icon, the other pushes you to a separate Excel template page).

This tool is for informational purposes only and is not a substitute for professional financial or medical advice. Consult a qualified professional before making decisions. See our Disclaimer.

How it works

Enter the loan amount, interest rate, and term
Add an optional extra monthly payment to see how much sooner you'd pay it off
Switch between monthly and yearly schedule views, and download the full schedule as CSV

Frequently asked questions

Can I download the full schedule?

Yes — one click gives you a CSV of every payment. We checked two popular amortization calculators directly and neither offers a direct download from the tool itself.

How is this different from OllTools' Loan Calculator?

Loan Calculator is built for a quick payment estimate with the schedule tucked behind a toggle. This tool is built around the schedule itself — it's shown by default, with a yearly summary view and CSV export as the main features.

Does adding extra payments actually work?

Yes — the extra amount is applied to principal every month in the schedule, and the summary shows exactly how much interest and time that saves versus the standard schedule.

#AmortizationCalculator#MortgagePayoffCalculator#AmortizationScheduleCalculator#LoanAmortizationScheduleCsv#ExtraPaymentAmortizationCalculator#YearlyAmortizationSchedule

Related tools

From the blog

finance-calc

Two amortization calculators show you the full payment schedule. Neither lets you download it.

We checked calculator.net and amortization-calc.com directly — one has a vague 'save' icon, the other pushes you to a separate Excel template page. Neither gives you a CSV of your actual numbers with one click.

2026-09-01

Update history

2026-09-01 Added: a cover image (a staircase of shrinking coin piles beside a small export-document icon) — used as the card thumbnail, social share image, and blog title image.
2026-09-01 Launched: amortization schedule calculator (no button) — extra-payment payoff acceleration, monthly/yearly view toggle, and one-click CSV download of the full schedule. Entirely client-side.