OSFI Stress Test 2026: How the Qualifying Rate Affects Your Buying Power

Last updated: 2026-01-20 · Author: usecos Team

The OSFI mortgage stress test requires borrowers to qualify at a rate higher than their contract rate — protecting against future rate increases.

How the Stress Test Works

You must qualify at the greater of:

Example: With a 4.5% contract rate, you qualify at 6.5% (4.5% + 2%).

Assumes $100K income, 20% down, 25-year amortization.

Larger down payment — reduces loan amount, lowers GDS/TDS.
Pay off debts — credit cards, car loans directly improve TDS.
Longer amortization — 30 years lowers monthly payment (but increases total interest).
Increase income — bonus, overtime, or second income source.

Use our Mortgage Calculator to test different scenarios and see your qualifying numbers.

The OSFI mortgage stress test requires borrowers to qualify at a rate higher than their contract rate — protecting against future rate increases.

You must qualify at the greater of:

Example: With a 4.5% contract rate, you qualify at 6.5% (4.5% + 2%).

Assumes $100K income, 20% down, 25-year amortization.

Larger down payment — reduces loan amount, lowers GDS/TDS.
Pay off debts — credit cards, car loans directly improve TDS.
Longer amortization — 30 years lowers monthly payment (but increases total interest).
Increase income — bonus, overtime, or second income source.

Use our Mortgage Calculator to test different scenarios and see your qualifying numbers.