Free Amortization Schedule Tools

The schedule is the loan; everything else is one number from it

Four tools built on the amortization table: the full payment-by-payment schedule with dates, the principal and interest split for any year, the balance after any number of payments, and what an interest-only period does to all three.

Amortization Schedule Calculator

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

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

Read the full guide, worked examples and FAQ for this calculator →

A payment figure tells you what leaves the account. The amortisation schedule tells you where it goes, what you will owe in five years, how much of everything paid so far was interest, and exactly when the loan ends.

These tools all read from that table. The pattern they reveal is consistent across every long loan: interest dominates early, the crossover takes far longer than people expect, and an extra payment made early is worth several times the same payment made late.

Why use AmortizationTools

Dates, not just payment numbers

A schedule with real dates is a document you can use - to check a statement, to plan a sale, or to know when the loan actually ends.

The split for any year

Eighty percent interest in year one and the reverse by year twenty-five. Seeing the trajectory explains most of what is confusing about long loans.

The balance at any point

What is still owed after sixty payments, how much of it has actually gone, and how many payments remain.

Interest-only modelled properly

The payment during the period, the payment after the reset, and the extra interest a structure costs that repays nothing while it runs.

How it works

  1. Build the schedule from the loan amount, rate and term.
  2. Read the split for whichever year you are interested in.
  3. Check the balance against a statement when the two seem to disagree.
  4. Model any interest-only period separately - the reset payment is the number that matters.

Frequently asked questions

Why are early payments almost all interest?

Because interest is charged on the outstanding balance, which is at its largest at the start. The proportion falls every month as the balance does, slowly at first and then quickly.

When does principal exceed interest?

It depends on the rate and term rather than the loan size. On a thirty-year loan at typical rates it is usually somewhere in the late teens.

Is the balance here the same as a payoff amount?

Close, but a formal payoff adds interest accrued since the last payment and any payoff fee. It is normally slightly higher.

Do these work for adjustable-rate loans?

Up to the first reset. After that, recalculate with the new rate, the remaining term and the balance at that point.

Can I export a schedule?

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