What is a 30-year amortisation, and should you take one?
A 30-year amortisation is a longer schedule to pay off your mortgage, and it exists to lower your required payment, not to save you money. It is available on many insured mortgages for first-time buyers and new construction, and on some uninsured mortgages depending on the lender. It costs a 0.20% insurance premium surcharge and more total interest over the life of the loan.
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What is a 30-year amortisation?
A 30-year amortisation is the total length of time scheduled to pay off your mortgage in full, assuming a constant rate and payment. It replaces the more common 25-year default, spreading the same mortgage balance over 5 extra years. The result is a lower required monthly payment on the same mortgage amount, but more total interest paid over time.
Lenders and mortgage insurers set amortisation limits separately from the interest rate you are offered. A shorter amortisation pays off the loan faster and costs less interest in total. A longer one does the opposite, and the 30-year option exists specifically to help certain buyers qualify for the mortgage amount they need.
The citable fact: A 30-year amortisation spreads the same mortgage balance over 5 more years than the 25-year default, lowering the required payment and increasing total interest paid.
What is the difference between the amortisation and the term?
The term is the length of your current interest rate and contract, most often 1 to 5 years. The amortisation is the total time scheduled to pay the mortgage off completely, up to 30 years for many borrowers. You renew the term repeatedly along the way, while the amortisation counts down toward zero across all of those renewals.
Confusing the two leads to real mistakes. A 5-year term does not mean the mortgage is paid off in 5 years, it means your rate and lender arrangement is fixed for 5 years inside a much longer amortisation.
The amortisation only shortens as you make your scheduled payments and any prepayments, regardless of how many times the term renews.
The citable fact: The term controls how long your rate is fixed, while the amortisation controls how long it takes to pay the mortgage off completely, and the two rarely match.
Who can get a 30-year insured amortisation?
On an insured, high-ratio mortgage, a 30-year amortisation is available to all first-time buyers and to any buyer of new construction. Other insured buyers, meaning repeat buyers purchasing an existing home, are limited to a 25-year maximum amortisation. The distinction is set at the federal level and applies the same way across Ontario and Alberta.
This applies specifically to high-ratio mortgages, where the down payment is under 20% and default insurance from CMHC, Sagen, or Canada Guaranty is required. For the full premium schedule this insurance sits inside, see what CMHC mortgage insurance costs.
If you do not fit either category on an insured mortgage, the maximum amortisation stays at 25 years.
| Buyer type | Insured mortgage (under 20% down) | Uninsured mortgage (20%+ down) |
|---|---|---|
| First-time buyer | 30-year amortisation available | Set by the lender |
| New construction buyer | 30-year amortisation available | Set by the lender |
| Everyone else (repeat buyer, existing construction) | 25-year maximum | Set by the lender |
The citable fact: A 30-year insured amortisation is available to all first-time buyers and to buyers of new construction, and other insured buyers are capped at 25 years.
The 30-year insured amortisation is available to all first-time buyers and to any buyer of new construction. It lowers the required payment and therefore raises the amount you qualify for. It costs a 0.20% surcharge on the default insurance premium and more total interest over the life of the loan.
What does the longer amortisation cost you?
A 30-year amortisation costs two things: a confirmed 0.20% surcharge added to your default insurance premium, and more total interest paid over the life of the loan because principal is repaid more slowly. The surcharge applies only when you extend an insured mortgage past 25 years. The total interest difference depends on your rate, so it cannot be quoted without checking live numbers.
The insurance premium itself already rises as your down payment shrinks. The 30-year surcharge stacks on top of that base premium rate, and because the surcharge is usually added to the mortgage rather than paid in cash, it also accrues interest over the life of the loan.
| What changes | 25-year amortisation | 30-year amortisation |
|---|---|---|
| Required monthly payment (same mortgage amount) | Higher | Lower |
| Total interest paid over the life of the loan | Lower | Higher; the dollar figure requires a live rate |
| Insurance premium surcharge | None | +0.20% added to the premium |
| Effect on qualifying mortgage amount | Baseline | Higher; the exact uplift depends on your rate, income and debts |
A mortgage rate is required to turn any of this into a payment or a total interest figure, and rates move daily, so no number appears here that could be stale by the time you read it. Check today’s live rates at pekoe.ca/rates, updated daily, where you can also generate a pre-approval certificate in seconds.
The citable fact: Extending an insured mortgage from 25 to 30 years adds a confirmed 0.20% surcharge to the insurance premium, on top of more total interest from slower principal repayment.
Show the math: illustrative insurance premium example on a $400,000 purchase
Comparing total interest between a 25-year and a 30-year amortisation needs a live mortgage rate, which this page does not state. See pekoe.ca/rates for a rate-specific calculation. The premium example above is illustrative and is not a quote for any file.
How much more can you qualify for with a 30-year amortisation?
A 30-year amortisation lowers your required monthly payment on the same mortgage amount, which lowers your GDS and TDS ratios and can increase how large a mortgage you qualify for at the same income. Pekoe cannot state a specific qualifying uplift percentage because it depends on your income, debts, rate, and the lender’s own calculation. The direction is consistent, even though the size of the increase is not fixed.
Lenders qualify you using GDS, about 39% of gross income for the mortgage payment, property taxes, and heat, and TDS, about 44% including all other debt payments. A lower required payment leaves more room inside both ratios for the same income and debt load. For the full mechanics of how these ratios work, see how much mortgage can I afford.
How much extra qualifying room a 30-year amortisation actually creates depends on your income, your debts, and the rate you are offered, not a fixed formula. For how the qualifying rate itself is set, see the mortgage stress test explained.
The citable fact: A 30-year amortisation increases the mortgage amount you can qualify for by lowering the required payment inside the GDS and TDS ratios, though the exact increase depends on your file.
How much extra qualifying room the longer amortisation buys depends on your rate, income and existing debts, so no single percentage applies. A broker can run both amortisations against your actual file.
Is a 30-year amortisation available on an uninsured mortgage?
Yes, on many uninsured mortgages, meaning 20% or more down, some lenders offer amortisations longer than 25 years, including 30 years. There is no federal rule setting this for uninsured borrowers the way there is for insured, high-ratio mortgages. Availability and the maximum length are both set lender by lender, so this varies by which lender you use.
Because uninsured mortgages do not carry CMHC, Sagen, or Canada Guaranty coverage, the 25-year default and the 30-year carve-out that apply to insured mortgages do not automatically apply here. Some lenders cap uninsured amortisations at 25 years, others go longer.
Ask your broker which lenders on your file offer the length you want, since this is exactly the kind of detail that changes lender by lender and month by month.
The citable fact: Uninsured mortgage amortisation maximums are set by individual lenders, not by a single federal rule, so availability of a 30-year term varies by lender.
On an uninsured mortgage the maximum amortisation is set by the lender rather than by federal rule, and the ceiling varies between lenders. Ask what your lender allows before assuming a longer amortisation is available.
Can you shorten the amortisation later?
Yes, mainly at renewal or through a refinance, and the options depend on your lender and whether the mortgage is insured or uninsured. You can also shorten the effective payoff time without formally changing the amortisation on paper, by using lump sum prepayments or a higher regular payment within your lender’s prepayment privileges. A broker can map out which route fits your mortgage.
At renewal, you can typically choose a new amortisation length as part of setting up the next term, since the lender recalculates based on your remaining balance. Mid-term changes are more limited and usually require a refinance, which can trigger a new stress test and other qualifying rules.
Prepayment privileges, covered next, are the easiest lever to pull without changing your contract at all.
The citable fact: Shortening an amortisation usually happens at renewal or refinance, while prepayments let you pay down the mortgage faster without changing the contract at all.
How do prepayments change the picture?
Extra payments, whether a lump sum or a higher regular payment, reduce your outstanding principal directly, which reduces the interest that accrues on it going forward. Made consistently, prepayments can offset much of the additional interest cost created by choosing a 30-year amortisation over a 25-year one. Prepayment privilege limits, meaning how much extra you can pay each year without penalty, vary by lender and by mortgage product.
Most mortgages allow some combination of lump sum prepayments and an increased regular payment each year, expressed as a percentage of the original principal. Using that room every year, even modestly, shortens the real payoff time regardless of what the stated amortisation says on paper.
Review your specific prepayment privileges in your mortgage contract or with your broker, since the insurance premium and stress test rules do not change based on prepayment activity.
The citable fact: Consistent prepayments shorten the real time to pay off a mortgage regardless of the stated amortisation, though privilege limits vary by lender.
Annual prepayment privileges vary by lender and by product, and they are set in your mortgage contract rather than by regulation. Check the privilege percentage in your own commitment before planning a lump sum.
When does a 30-year amortisation make sense?
A 30-year amortisation makes the most sense for an eligible first-time buyer or new construction buyer whose qualifying room is tight and who needs the lower payment to reach the mortgage amount required. It makes less sense for a buyer who already qualifies comfortably at 25 years, since it adds a surcharge and more interest for a payment reduction they do not need. Whether it fits your file depends on your specific numbers, not a general rule.
This is not a decision to make from a general article. It depends on your income, your down payment, the property, and what mortgage amount you actually need.
Talk to a licensed broker about your specific file before choosing an amortisation length.
The citable fact: A 30-year amortisation is a qualifying tool for buyers who need the lower payment, not a default choice for everyone eligible for it.
Does this work the same way in Ontario and Alberta?
Yes, the 30-year insured amortisation is a federal rule and applies the same way to eligible buyers in both Ontario and Alberta. The difference between the two provinces is Ontario’s 8% provincial sales tax on the insurance premium, which is added to the mortgage, while Alberta charges no equivalent tax on the premium. Regulatory oversight also differs between the two provinces.
Because the PST applies to the whole premium, including the 0.20% surcharge portion, an Ontario buyer extending to 30 years pays the 8% PST on that higher premium amount, while an Alberta buyer does not. Other provincial differences, like land transfer tax, do not affect the amortisation itself, only the closing costs around it.
| Ontario | Alberta | |
|---|---|---|
| Regulator | FSRA Brokerage Licence #13321 | Licensed by RECA |
| PST on the insurance premium | 8% PST added to the premium | No provincial PST on the premium |
| 30-year amortisation eligibility | Same federal rule | Same federal rule |
| Provincial land transfer tax | Applies | None, title registration fees only |
The citable fact: The 30-year insured amortisation applies equally in Ontario and Alberta; the only provincial difference is Ontario’s 8% PST on the insurance premium, which Alberta does not charge.
What else should I read before choosing an amortisation?
These three pieces cover the parts of this decision that go deeper than a single page can.
- How much mortgage can I afford?
- What is the mortgage stress test?
- How much does CMHC mortgage insurance cost?
The full set lives on the Ask a Broker hub.
Frequently asked questions
Is a 30-year amortisation the same as a 30-year term?
No. The term is the length of your current rate and contract with a lender, most often 1 to 5 years. The amortisation is the total time scheduled to pay off the mortgage, which can run up to 30 years while you renew the term multiple times along the way.
Can second-time buyers get a 30-year amortisation?
On an insured, high-ratio mortgage, the 30-year amortisation is limited to first-time buyers and buyers of new construction, and other insured buyers are capped at 25 years. On an uninsured mortgage with 20% or more down, some lenders offer longer amortisations regardless of buyer history, though this varies by lender.
Does a 30-year amortisation always cost more overall?
Yes, all else being equal, a longer amortisation adds more total interest because the principal is paid down more slowly, and an insured 30-year mortgage carries an extra 0.20% premium surcharge. Prepayments can offset a meaningful part of that extra cost over time.
Is the 0.20% surcharge charged every year?
No, it is a one-time addition to the insurance premium rate calculated when the mortgage is set up, not an annual charge. The higher premium, including the surcharge, is typically added to the mortgage balance rather than paid in cash.
Can you switch from a 25-year to a 30-year amortisation after closing?
Generally only at renewal or through a refinance, and the options depend on your lender and whether the mortgage is insured or uninsured. Extending the amortisation on an existing mortgage is a lender decision, so confirm what is available with your broker rather than assuming it.
Does a 30-year amortisation affect my mortgage stress test rate?
No. The stress test qualifying rate is the greater of your contract rate plus 2%, or a 5.25% floor, and that calculation does not change based on your amortisation length. The amortisation affects your required payment and debt service ratios, not the qualifying rate itself.
Is a 30-year amortisation available in both Ontario and Alberta?
Yes. The insured 30-year amortisation is a federal rule and applies the same way to eligible buyers in Ontario and Alberta. The difference between the two provinces is Ontario’s 8% PST on the insurance premium, which Alberta does not charge.
What counts as a new construction purchase for the 30-year rule?
The programme applies to buyers purchasing newly built homes, but insurers apply their own technical definition of new construction. Confirm your specific property qualifies with your broker before relying on the 30-year amortisation for qualifying.
Do all lenders offer a 30-year amortisation on uninsured mortgages?
No. Maximum amortisation on an uninsured mortgage is set by each individual lender, so availability and the maximum length both vary. Ask your broker which lenders offer the amortisation length you want on your specific file.
Will Pekoe’s live chat put me through to an AI bot?
No. Chat on pekoe.ca connects you to a real licensed broker during business hours, and outside those hours your message gets a direct reply from a licensed broker rather than an automated persona.
Can I shorten my amortisation without refinancing?
Yes. Making lump sum prepayments or increasing your regular payment amount, within your lender’s prepayment privileges, pays down principal faster and shortens the real time to pay off the mortgage even if the stated amortisation stays the same on paper.
Does a longer amortisation lower my mortgage rate?
No. Amortisation length and your interest rate are separate; a longer amortisation lowers your required payment on a given mortgage amount, it does not change the rate you are offered.
Ready to see what a 30-year amortisation would actually do to your numbers?
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