30-Year Mortgages in Canada: The New Rules Explained
For decades, if you put less than 20% down on a home in Canada, you were limited to a 25-year amortization. That changed in 2024. The federal government extended insured mortgage eligibility to 30-year amortizations, giving first-time buyers more breathing room on their monthly payments. The trade-off, as always with longer amortizations, is more interest paid over the life of the loan.
This article explains exactly who qualifies, how the math plays out, and whether the lower monthly payment is worth it.
What changed — and when
Two rule changes expanded access to 30-year amortizations for insured mortgages (mortgages with less than 20% down, which require CMHC insurance):
- August 1, 2024: First-time home buyers purchasing newly built homes became eligible for insured mortgages with 30-year amortizations. Previously, all insured mortgages were capped at 25 years.
- December 15, 2024: The government expanded the rule to cover all first-time buyers regardless of whether the home is new or existing, and also extended 30-year eligibility to any buyer — first-time or not — purchasing a new build.
For buyers with 20% or more down (conventional mortgages), lenders already had flexibility to offer longer amortizations. The 2024 changes specifically addressed the insured mortgage market, which represents a large share of first-time buyer purchases in Canada.
Who qualifies for a 30-year insured mortgage?
As of December 15, 2024, you qualify for a 30-year amortization on an insured mortgage if you meet either condition:
- You are a first-time home buyer (regardless of whether the home is new or existing), or
- You are purchasing a newly built home (regardless of whether you are a first-time buyer)
The standard CMHC insurance rules still apply: the purchase price must be under $1,500,000, and your down payment must be at least 5% (10% for the portion above $500,000).
First-time buyer definition
You are considered a first-time buyer if you have not owned a qualifying home — or lived in one owned by your spouse or common-law partner — at any point in the current calendar year or the preceding four calendar years. If you owned a home more than five years ago and have been renting since, you may qualify again.
The monthly payment difference: 25 vs. 30 years
The appeal of a 30-year amortization is straightforward: lower monthly payments. Here is how the numbers compare at a few common price points, assuming 5% down and a 4.99% fixed rate:
| Home Price | Mortgage (after CMHC) | 25-year payment | 30-year payment | Monthly savings |
|---|---|---|---|---|
| $500,000 | $513,150 | $2,915/mo | $2,735/mo | $180/mo |
| $700,000 | $721,750 | $4,100/mo | $3,847/mo | $253/mo |
| $900,000 | $925,200 | $5,257/mo | $4,930/mo | $327/mo |
The monthly savings are meaningful — roughly $180 to $330 depending on your purchase price. For buyers in expensive markets who are stretching to qualify, this can be the difference between getting approved and getting turned away.
Use our mortgage calculator to model your exact numbers — just change the amortization from 25 to 30 years to see the difference.
The real cost: extra interest over 30 years
Lower monthly payments come at a price. Spreading your mortgage over 30 years instead of 25 means five more years of interest charges. On a $700,000 purchase with 5% down at 4.99%:
| 25-year | 30-year | Difference | |
|---|---|---|---|
| Monthly payment | $4,100 | $3,847 | −$253/mo |
| Total interest paid | $518,000 | $662,000 | +$144,000 |
| Total cost of mortgage | $1,239,750 | $1,383,750 | +$144,000 |
Saving $253 per month over 30 years costs approximately $144,000 in additional interest. That is the core trade-off every buyer needs to understand before choosing a longer amortization.
30-year amortization and the mortgage stress test
The mortgage stress test — which requires you to qualify at the greater of your contract rate plus 2% or 5.25% — is calculated on your actual amortization period. A 30-year amortization produces a lower qualifying payment than a 25-year mortgage, which means you may qualify for a larger loan at the same income level.
This is one of the key reasons the government introduced the rule: expanding access to 30-year amortizations was intended to improve affordability by allowing buyers to qualify for more without relaxing income requirements.
CMHC insurance premiums do not change
Whether your amortization is 25 or 30 years, CMHC insurance premiums are the same — they are calculated based on your down payment percentage alone:
| Down payment | CMHC premium rate |
|---|---|
| 5% – 9.99% | 4.00% of mortgage amount |
| 10% – 14.99% | 3.10% of mortgage amount |
| 15% – 19.99% | 2.80% of mortgage amount |
The CMHC premium is added to your mortgage principal and amortized over your chosen term. So a larger mortgage at a longer amortization means the premium itself costs slightly more over time — but the rate is unchanged.
Should you choose 25 or 30 years?
The right answer depends on your situation:
Choose 25 years if you can comfortably afford the higher monthly payment. You will save over $100,000 in interest on a typical purchase, build equity faster, and become mortgage-free five years sooner. If you expect your income to grow, the 25-year payment becomes more manageable over time.
Consider 30 years if the 25-year payment would stretch your budget uncomfortably thin, leaving little room for property taxes, maintenance, or unexpected expenses. A lower mandatory payment also gives you more flexibility to make lump-sum prepayments when you have surplus cash — effectively shortening your amortization on your own schedule without being locked into the higher payment.
One practical approach: qualify for and take the 30-year mortgage, but budget as if you are on a 25-year schedule. Make regular prepayments equal to the difference between the two payments. You capture the payment flexibility of the 30-year without paying the full interest premium.
Frequently asked questions
Can I get a 30-year mortgage if I have 20% or more down?
Yes. For conventional mortgages (no CMHC insurance required), lenders have more flexibility and most offer 25 or 30-year amortizations regardless of whether you are a first-time buyer. Some lenders may go longer, though this varies. The 2024 rule changes specifically applied to the insured (under 20% down) market.
Does a 30-year amortization affect my mortgage renewal?
At renewal, you renegotiate your rate but keep your remaining amortization. If you started with 30 years and renew after a 5-year term, you would have 25 years remaining. You can choose to accelerate repayment at renewal by shortening the amortization if your income has grown and you want to pay it off faster.
Can I switch from 30 to 25 years mid-mortgage?
At renewal you can choose to shorten your remaining amortization. Many lenders also allow lump-sum prepayments (typically 10–20% of the original principal per year) and increased payment options that effectively reduce your amortization without formally changing the contract.
Is the 30-year insured mortgage rule permanent?
It was implemented through regulatory change rather than legislation, which means a future government could reverse it. For now it is in effect and lenders are actively offering it. If policy stability matters to your planning, it is worth following federal housing policy announcements.
How do I compare 25 vs. 30 years for my specific situation?
Use our mortgage calculator — enter your home price, down payment, and rate, then toggle the amortization between 25 and 30 years to see the exact difference in monthly payment and total interest for your numbers.
