Contract Rate or the 5.25% Floor: Which One Decides What You Can Buy
A buyer who locks in a 2.75% rate and one who settles for 3.25% walk out with the same maximum mortgage, to the dollar. The cheaper rate saves money every month. It doesn't add a single square foot to the house they can buy.
The gap comes from the qualifying rate. Under OSFI's Guideline B-20, which sets the stress test for uninsured mortgages, and the Department of Finance rule for insured ones, you have to qualify at your contract rate plus 2 percentage points or 5.25%, whichever is higher. Your debt service ratios are calculated at that qualifying rate, not at the rate on your contract. As of October 2026, the 5.25% floor is still in place. Once your contract rate drops below 3.25%, the floor takes over, and a cheaper rate stops raising your ceiling. If you're working out your own budget, the rate you'll pay and the rate that sets your approval are two different numbers.
Run the same household at three rates
Here is a clearly illustrative household:
Income: $150,000 a year, or $12,500 a month.
Gross Debt Service limit: 39%, which allows $4,875 a month for housing.
Property tax and heat: about $500 a month, which leaves roughly $4,375 for the mortgage payment.
Amortization: 25 years.
At a 3.75% contract rate, the qualifying rate is 5.75%. A payment of $4,375 at 5.75% supports a mortgage of about $700,000.
At 3.25%, the qualifying rate drops to 5.25%. The same payment now supports about $734,000.
At 2.75%, the qualifying rate is still 5.25%, because 2.75% plus 2% is only 4.75%. The approval stays at about $734,000.
Now look at what each household actually pays on a $734,000 mortgage over 25 years. At 3.25%, the payment is about $3,570 a month. At 2.75%, it's about $3,380. That's roughly $190 a month back in your pocket, with exactly the same purchase limit.
Above 3.25%, every rate drop raises both your approval and your savings. Below 3.25%, a rate drop gives you savings only. In Abbotsford, where detached homes sit above $1 million and many buyers are working with 20% down and an uninsured mortgage, that frozen ceiling is often what decides between a detached house and a townhouse.
What moves the ceiling once the floor is in charge
When the 5.25% floor sets your qualifying rate, approval depends on the other side of the ratio. That means your income, your debts, your property costs and your amortization.
Debts hit the Total Debt Service ratio, which usually tops out around 44% for borrowers with strong credit. A $600 car payment uses up mortgage room at the 5.25% rate whether your contract rate is 2.5% or 3%. For move-up buyers with a lot of equity, this is the frustrating part. Lenders size the new mortgage on your income, and your $500,000 in equity doesn't change that.
Investors meet the same rule with one more wrinkle. Lenders usually count only 50% to 80% of gross rent toward debt service, and they test the whole portfolio at the qualifying rate. A rental that clearly makes money at your real rate can still look short on a lender's calculator. Before you write an offer, model the property both ways: at your contract rate for cash flow, and at the qualifying rate with discounted rent for approval.
Refinancing to pay off high-interest debt runs into the same test. A consolidation that would cut your monthly outgoings still has to qualify at 5.25% or higher. Straight switches at renewal are exempt from the stress test, but taking equity out is not. Some BC credit unions use their own criteria for uninsured files, and alternative lenders may skip the test. Both usually cost more in rate or fees, so price that against the extra borrowing room before choosing them.
The single condition that decides it
Look at the rate you've been offered. If it's above 3.25%, shopping for a better rate raises both your approval and your savings. If it's at or below 3.25%, your ceiling is fixed at the 5.25% floor. A better rate will still save you money every month, but more buying power has to come from more income, fewer debts or how your rental income is counted.
A buyer who locks in a 2.75% rate and one who settles for 3.25% walk out with the same maximum mortgage, to the dollar. The cheaper rate saves money every month. It doesn't add a single square foot to the house they can buy.
The gap comes from the qualifying rate. Under OSFI's Guideline B-20, which sets the stress test for uninsured mortgages, and the Department of Finance rule for insured ones, you have to qualify at your contract rate plus 2 percentage points or 5.25%, whichever is higher. Your debt service ratios are calculated at that qualifying rate, not at the rate on your contract. As of October 2026, the 5.25% floor is still in place. Once your contract rate drops below 3.25%, the floor takes over, and a cheaper rate stops raising your ceiling. If you're working out your own budget, the rate you'll pay and the rate that sets your approval are two different numbers.
Run the same household at three rates
Here is a clearly illustrative household:
At a 3.75% contract rate, the qualifying rate is 5.75%. A payment of $4,375 at 5.75% supports a mortgage of about $700,000.
At 3.25%, the qualifying rate drops to 5.25%. The same payment now supports about $734,000.
At 2.75%, the qualifying rate is still 5.25%, because 2.75% plus 2% is only 4.75%. The approval stays at about $734,000.
Now look at what each household actually pays on a $734,000 mortgage over 25 years. At 3.25%, the payment is about $3,570 a month. At 2.75%, it's about $3,380. That's roughly $190 a month back in your pocket, with exactly the same purchase limit.
Above 3.25%, every rate drop raises both your approval and your savings. Below 3.25%, a rate drop gives you savings only. In Abbotsford, where detached homes sit above $1 million and many buyers are working with 20% down and an uninsured mortgage, that frozen ceiling is often what decides between a detached house and a townhouse.
What moves the ceiling once the floor is in charge
When the 5.25% floor sets your qualifying rate, approval depends on the other side of the ratio. That means your income, your debts, your property costs and your amortization.
Debts hit the Total Debt Service ratio, which usually tops out around 44% for borrowers with strong credit. A $600 car payment uses up mortgage room at the 5.25% rate whether your contract rate is 2.5% or 3%. For move-up buyers with a lot of equity, this is the frustrating part. Lenders size the new mortgage on your income, and your $500,000 in equity doesn't change that.
Investors meet the same rule with one more wrinkle. Lenders usually count only 50% to 80% of gross rent toward debt service, and they test the whole portfolio at the qualifying rate. A rental that clearly makes money at your real rate can still look short on a lender's calculator. Before you write an offer, model the property both ways: at your contract rate for cash flow, and at the qualifying rate with discounted rent for approval.
Refinancing to pay off high-interest debt runs into the same test. A consolidation that would cut your monthly outgoings still has to qualify at 5.25% or higher. Straight switches at renewal are exempt from the stress test, but taking equity out is not. Some BC credit unions use their own criteria for uninsured files, and alternative lenders may skip the test. Both usually cost more in rate or fees, so price that against the extra borrowing room before choosing them.
The single condition that decides it
Look at the rate you've been offered. If it's above 3.25%, shopping for a better rate raises both your approval and your savings. If it's at or below 3.25%, your ceiling is fixed at the 5.25% floor. A better rate will still save you money every month, but more buying power has to come from more income, fewer debts or how your rental income is counted.
Sources
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