Should I take a 30-year amortization and keep the payment difference? (Canada)

In Canada, a 30-year amortization lowers your monthly payment compared with 25 years, but you pay more interest and owe more at every renewal. Whether to invest the payment difference is a question for your financial advisor, because the answer depends on returns we do not forecast. This page shows only the mortgage side: what the lower payment costs, and how to keep the option of paying the mortgage down faster.

Who can choose 30 years

Your amortization is the total time it would take to pay off the mortgage at the scheduled payments. Your term is the shorter contract inside the amortization.

An insured mortgage is one with less than 20% down. A 30-year amortization has been available to all first-time buyers and all buyers of new builds for insurance applications from December 15, 2024 (source: Department of Finance, checked October 2026). The insurance premium side of that choice is covered on our 25 or 30-year amortization page.

With 20% or more down, the mortgage is uninsured. Many lenders offer 30 years depending on the property and your application, sometimes priced differently from 25 years. As always, the longer amortization is subject to lender approval.

The mortgage side, in dollars

Illustrative, not a quote. This example uses the same $450,000 balance as our 25 or 30-year page. One rate applies to both schedules and is held for the whole amortization, which a real rate will not be.

• Payment: about $2,491 a month over 25 years, about $2,269 over 30 years, so about $222 a month less.
• Total interest over the full amortization: payment × number of payments − the loan. 25 years: $2,490.63 × 300 − $450,000 = about $297,200. 30 years: $2,268.97 × 360 − $450,000 = about $366,800. The longer schedule costs about $69,600 more.
• At the first renewal, five years in: you owe about $395,100 on the 25-year schedule and about $410,000 on the 30-year one, about $14,900 more.

Over those five years, the 30-year schedule leaves about $13,300 in your hands ($222 × 60 payments). You also owe about $14,900 more. The gap between the two, about $1,570, is the extra interest the longer schedule charged in the first five years.

Interest over those five years is about $96,090 on the longer schedule against about $94,520 on the shorter one.

What the $13,300 does in the meantime is a question for your advisor. So is whether that money ends up worth more than the extra interest and the larger balance. We do not assume a return, and the gap grows each year the longer schedule runs.

Thirty years, paid like twenty-five

There is a middle path on the mortgage side. Take 30 years, then pay the 25-year amount each month by increasing your payment within your prepayment privileges. The balance then follows the 25-year schedule: same rate, same payment, same result. The difference is the option to go back to the lower payment in a tight year.

Check two things in the contract. Payment increases and lump sums are limited each year, and paying more than the maximum means a penalty (source: Financial Consumer Agency of Canada, checked October 2026). And ask whether, once you increase the payment, you can lower it again later; lenders set their own rules on that.

What to do next

Compare 25 and 30 years over the years you expect to keep the home with the total cost of holding tool. The tool's results are estimates only, not an offer or advice. Or use our call-back form, and we will set out both schedules for your own numbers.