THE MITEY FIELD NOTES
Mortgage term vs amortization: two different clocks
Understand how a mortgage term, amortization, payment and term-end balance fit together in a Canadian fixed-rate illustration.
The short answer
Amortization is the repayment period used to calculate a scheduled payment. The term is the period covered by the current mortgage contract. A five-year term does not normally mean the entire mortgage is paid off in five years.
01 / A CLOSER LOOK
Use the right period for the question.
A payment calculation spreads the opening balance over the entered amortization. A renewal comparison then stops the ledger at the selected term to show interest paid and principal still owed. Keeping those two periods separate prevents an apparent five-year cost from being mistaken for the lifetime cost of the mortgage.
For example, a $400,000 balance with a 20-year remaining amortization and a five-year term still has a balance after the term in this model. The rate applied after that date is unknown. Holding today’s entered rate for 20 years is an illustration, not a renewal-rate forecast.
02 / A CLOSER LOOK
Keep the compounding convention consistent.
The Canadian fixed-rate tools here convert an entered nominal annual rate compounded semi-annually to an equivalent monthly rate: (1 + annual rate / 2)^(1/6) − 1. Dividing that annual rate by 12 produces a different payment. The model uses monthly payments, not accelerated biweekly or lender-specific schedules.
The payment contains interest and principal. Early in a typical amortizing schedule, more of it goes to interest than later. The period ledger lets you follow that change and check the balance used by a subsequent renewal scenario. Taxes, insurance, maintenance and other home costs remain outside the payment.
03 / A CLOSER LOOK
Take a consistent comparison into the next conversation.
Write down the balance date, remaining amortization, rate convention, payment frequency and term for each offer. Then add the costs and contract features the calculator does not model, such as switching charges, prepayment conditions or portability.
If the actual lender statement differs, compare dates, rounding, payment timing, premium treatment and compounding before assuming a model error. Keep the entered figures with the result so another person can reproduce the scenario. A calculated payment does not establish mortgage eligibility or the terms a lender will offer.
Sources and scope
FCAC: renewing your mortgage ↗
The source provides context for the subject. The worked models are MITEY implementations described on their own pages. This guide does not assess personal eligibility or recommend a product. Report a correction.