Every Major Mortgage Rule Change Since 2020: A Complete Canadian Timeline

Between March 2020 and early 2026, the Canadian mortgage market experienced more regulatory change than in the previous decade combined. Emergency pandemic measures gave way to tightening, then loosening, then targeted reforms. Keeping track of what changed, when, and what still applies today requires a scorecard. This is that scorecard.

We have organized every significant rule change into a single timeline, followed by deeper analysis of the changes that matter most for Ontario borrowers in 2026.

Why This Matters

Mortgage rules determine who can borrow, how much, and on what terms. A borrower who was declined in 2023 might qualify today under different rules. A first-time buyer who assumed they needed 25-year amortization may now have access to 30 years. A homeowner who felt locked into their current lender at renewal may now be free to switch without requalifying, within the conditions set out below.9

Understanding the rule changes is not academic. It is practical, and it can save you thousands of dollars or open doors you thought were closed.

The Complete Timeline (2020-2026)

The Stress Test: A Closer Look

The mortgage stress test has been the single most consequential rule affecting borrower qualification since its introduction. Here is how it has evolved:5

What the Stress Test Does

When you apply for a mortgage, you must qualify not at your actual contract rate, but at a higher "qualifying rate." This ensures you could theoretically handle higher payments if rates rise during your term. The qualifying rate is the greater of 5.25% or your contract rate plus 2%.

How the Math Works in 2026

These rates are illustrative, not current offers. For context on the effect of a higher qualifying rate: a household qualifying at 5.80% rather than at a lower contract rate has materially less borrowing capacity than at a lower qualifying rate, because the lender tests affordability at the higher figure. The size of the gap depends on income, debts, and amortization, so ask a broker to run your own numbers rather than relying on a generic example.

The Switch Exception

The most impactful stress test change took effect November 21, 2024: OSFI no longer expects federally regulated lenders to apply the minimum qualifying rate to an uninsured "straight switch," meaning a borrower who moves a stand-alone uninsured mortgage to a new federally regulated lender at renewal, without increasing the remaining amortization or the loan amount (beyond a small allowance for costs), does not have to requalify at the stress test rate. Insured straight switches had already been exempt under the Canadian Mortgage Charter.8 The lender must still underwrite the switch under OSFI's Guideline B-20, including due diligence on the borrower's ability to service the debt. This change freed many Ontario homeowners who keep their balance and amortization unchanged to shop for a better renewal rate without being held to the stress test at their existing lender.9

The Foreign Buyer Ban

The Prohibition on the Purchase of Residential Property by Non-Canadians Act, which received royal assent on June 23, 2022 and took effect January 1, 2023, was one of the more significant national restrictions on foreign property purchases introduced in Canada. Key details:

• Who is restricted: Non-Canadian citizens and non-permanent residents, with exceptions for protected persons such as refugees, certain work permit holders (183 days or more of validity remaining at the time of purchase), and some international students.12
• What is restricted: Purchase of residential property (1-3 units) in a Census Metropolitan Area or Census Agglomeration.
• Duration: Originally two years (2023-2024); the extension to January 1, 2027 was announced in February 2024.
• Penalties: A fine of up to $10,000, and a court can order the property sold.10

For most Ontario borrowers who are Canadian citizens or permanent residents, the ban does not change how a mortgage is qualified. It matters mainly to non-Canadian purchasers.12

The 2024 Housing Package

The 2024 federal budget and subsequent measures, which came into force on December 15, 2024, contained the most borrower-friendly mortgage policy changes in years. The three pillars:

30-Year Amortizations for First-Time Buyers and New Builds

The measure extends amortization from 25 to 30 years on insured mortgages for first-time home buyers and for all buyers of newly built homes, not only first-time buyers.8 Extending amortization reduces monthly payments meaningfully. On a $500,000 mortgage at an illustrative 4.19% rate (semi-annual compounding, our own calculation, not a current offer):

• 25-year amortization: approximately $2,680 per month
• 30-year amortization: approximately $2,430 per month
• Monthly savings: roughly $250, about a 9% reduction

The trade-off is paying more total interest over the life of the mortgage, roughly $70,000 more on a $500,000 loan over the full amortization period. But for first-time buyers and new-build purchasers on tight budgets, the reduced monthly obligation is often the difference between qualifying and not qualifying.

$1.5 Million Insured Mortgage Cap

Raising the cap from $1 million to $1.5 million, effective December 15, 2024, was particularly relevant for Ontario's higher-priced markets.8 Insured mortgages typically carry lower rates than uninsured mortgages because the lender's risk is covered by mortgage insurance. Expanding access to insured rates can save Ontario buyers money over the life of the loan; the exact savings depend on the rates on offer at the time.

Stress Test Exemption for Straight Switches

As discussed above, OSFI's November 21, 2024 change freed many renewal borrowers who keep the same balance and amortization to shop without requalifying. The practical effect is that your bank has less ability to hold you to an uncompetitive renewal offer on the basis that you could not pass the stress test with another federally regulated lender.

What May Be Coming in 2026

Items to watch:

• OSFI mortgage underwriting review. OSFI reviews its minimum qualifying rate from time to time. Any change would be announced by OSFI; none is confirmed here.
• Foreign buyer ban expiry. The ban is set to expire January 1, 2027. The government will need to decide whether to extend it again, let it lapse, or replace it with a permanent framework.
• Provincial supply-side measures. Ontario continues to face a housing supply gap. Housing supply policy continues to evolve at the provincial and municipal level.

We will update this timeline as new changes are confirmed.