AmortizationTools

Amortization Schedule Calculator

Generate a complete amortization schedule for any loan, with dates, the principal and interest split, and the running balance.

Last reviewed

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Free · No sign-up · Runs in your browser

An amortisation schedule is the complete description of a loan. Everything else - the payment, the total interest, the payoff date, the balance at any point - is a single number read off it.

This generator builds the full table with dates for any level-payment loan, and shows what an extra monthly amount does to both the interest total and the number of payments.

Your numbers

Results update as you type. Nothing is sent anywhere.

Result

Monthly payment

$2,155

Total interest

$425,804

Total paid
$775,804
Payments to clear
360 months
Payoff date
2056-04-01
Interest in payment 1
$1,822.92
Principal in payment 1
$332.09
Interest in the final payment
$11.17

Early payments are mostly interest because interest is charged on the outstanding balance. The principal share grows every month.

Servicers may round the final payment slightly differently, so the last row can differ by a few cents from a lender statement.

Payment-by-payment schedule

PaymentAmountPrincipalInterestBalance
1. 2026-05$2,155.01$332.09$1,822.92$349,668
2. 2026-06$2,155.01$333.82$1,821.19$349,334
3. 2026-07$2,155.01$335.56$1,819.45$348,999
4. 2026-08$2,155.01$337.31$1,817.70$348,661
5. 2026-09$2,155.01$339.07$1,815.94$348,322
6. 2026-10$2,155.01$340.83$1,814.18$347,981
7. 2026-11$2,155.01$342.61$1,812.40$347,639
8. 2026-12$2,155.01$344.39$1,810.62$347,294
9. 2027-01$2,155.01$346.19$1,808.82$346,948
10. 2027-02$2,155.01$347.99$1,807.02$346,600
11. 2027-03$2,155.01$349.80$1,805.21$346,250
12. 2027-04$2,155.01$351.62$1,803.39$345,899

How to use the amortization schedule calculator

  1. Enter the loan amount, the interest rate and the term.
  2. Enter the first payment date so the rows carry real dates.
  3. Add an extra monthly payment to generate the accelerated schedule.
  4. Expand the table and download the result if you need to keep it.

What people use this for

  • Producing a full schedule for records or for a lender conversation.
  • Finding the balance at any specific payment number.
  • Seeing the interest split on any individual payment.
  • Modelling the effect of consistent overpayments.

Worked examples

Every figure below is produced by running this calculator against the example inputs, so the numbers always match the tool.

A 30-year mortgage

$350,000 at 6.25% over 30 years from May 2026.

Monthly payment
$2,155
Total interest
$425,804
Interest in payment 1
$1,822.92

A seven-year auto loan

$38,000 at 7.4% over 7 years, which shows a much faster crossover.

Monthly payment
$581
Total interest
$10,802
Principal in payment 1
$346.65

Term decides how front-loaded the interest is

Comparing the two examples shows it clearly. On the thirty-year mortgage the first payment is overwhelmingly interest; on the seven-year auto loan a substantial share goes to principal from the start.

That is a function of term and rate rather than of loan size. Long loans spend years barely reducing the balance, which is why the equity picture on a mortgage looks so different from that on a car loan.

What the schedule is useful for

It answers questions a payment figure cannot: what will I owe in five years, how much interest will I have paid by then, what does an extra hundred a month actually buy, and when exactly does this end.

It is also the document to check a lender statement against. Small discrepancies are rounding; large ones usually mean the rate or term is not what you assumed.

Methodology and assumptions

What this calculator does, and what it deliberately does not do.

  • Each row charges interest on the opening balance at the periodic rate and applies the rest of the payment to principal.
  • Extra payments reduce principal after interest is charged.
  • A fixed rate is assumed throughout; adjustable loans need recalculating at each reset.
  • Results are estimates. Real quotes depend on credit, income, property, loan programme and lender pricing at the time of application.
  • Nothing you type is transmitted or stored - the calculation runs entirely inside your browser.

This calculator is provided for informational and educational purposes only. Results are estimates and may not reflect actual rates, fees, taxes, or market conditions.

This website is not a lender, a mortgage broker or a financial adviser. It does not originate loans, does not accept applications and does not forward your details to anyone.

Actual loan terms depend on credit history, income, the property, the loan programme and lender pricing at the time of application. Only a lender can tell you what you qualify for.

Frequently asked questions

Can I download the schedule?

Yes. The download control exports the result and the full table as CSV, which opens in any spreadsheet.

Does it work for adjustable-rate loans?

Only up to the first reset. After that, recalculate with the new rate and the remaining term and balance.

Why is my final payment different?

The last payment covers only what remains, which is normally slightly less than a full instalment.

How do I model a one-off lump sum?

This tool models a consistent monthly extra. Use an extra payment calculator for a lump sum.

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