What is OSFI (Office of the Superintendent of Financial Institutions) in Canadian mortgages?
Federal regulator overseeing Canadian banks, insurance companies, and trust companies. Sets mortgage underwriting rules including Guideline B-20 (stress test, LTV limits, income verification).
OSFI example
Worked example
OSFI Guideline B-20 requires all federally-regulated lenders to stress-test borrowers at max(rate+2%, 5.25%).