Calculators

Amortization calculator

See how each payment splits between principal and interest, and what extra payments do to the payoff date. Everything updates as you type.

Sample data

The principal you are borrowing, not the property price. For a refinance, use the payoff balance.

Sample data

Paying a loan down to zero through equal scheduled payments. Each payment covers that month’s interest first; the remainder reduces the balance.

Sample data

Optional: Make extra payments

Extra payments shorten the loan and cut total interest, even small ones.

Any amount paid beyond the scheduled payment. It reduces the balance immediately, which cuts future interest and shortens the loan.

Payments here compound monthly. Canadian fixed mortgages compound semi-annually, so use the mortgage module for Canadian payment math.

SUMMARYNumber of payments: 300
Monthly payment
$18,276
Total interest paid
$2,632,674
Total cost of loan
$5,482,674
Payoff date
Aug 2051

How payments change over the life of a 25-year loan

As the loan matures, more of each payment goes to principal and less to interest, until the balance reaches zero.

Loan balance and payment split over timePrincipal overtakes interest partway through the loan while the remaining balance falls to zero.$750K$1.5M$2.3M$3.0M20312036204120462051
As of Aug 2031
Payment 60 of 300
Principal paid$288,779
Interest paid$807,756
Loan balance$2,561,221

Hover the chart or drag the slider. Shared links reopen at this point.

The full year-by-year table is in the .

Illustrative schedule only. Not advice; your lender’s schedule governs.

Keep or send this schedule

Save it for later, share it with others, or export it as a report to get estimates before you buy.

Preset scenarios

One click sets every field.

More calculators

The rest of this suite. Each answers one question.

Frequently asked questions

Amortization is the plan for paying a loan off over time. Every payment you make gets split in two: one part covers the interest, which is the bank's fee, and the other part reduces the principal, what you actually owe. Early on, most of the money goes to interest, because you still owe a lot. Later, most of it goes to the balance. The table showing that split for every payment is called an amortization schedule. This calculator draws that split for every payment in the loan, so you can see what you still owe in any given year, how much interest you pay in total, and how much sooner you would be done if you paid a little extra each month. Note the default term differs by market: 25 years is standard in Canada, 30 years in the US.

Glossary

Plain-language definitions of every term this calculator uses.

Amortization

Paying a loan down to zero through equal scheduled payments. Each payment covers that month’s interest first; the remainder reduces the balance.

Amortization schedule

A payment-by-payment table showing how much of each payment goes to principal, how much goes to interest, and the balance remaining after it.

Principal and interest split

How one payment divides between reducing the balance and paying the lender. The split shifts toward principal as the balance falls.

Remaining balance

What is still owed on the loan at a point in time. It is also the payoff amount, before any prepayment penalty or per-diem interest.

Payoff date

The date of the final scheduled payment, when the balance reaches zero. Extra payments pull this date earlier.