What Canada OSFI Guideline B-20 - Residential Mortgage Underwriting Practices requires
OSFI (Office of the Superintendent of Financial Institutions) Guideline B-20 (Residential Mortgage Underwriting Practices and Procedures, updated January 2018 and revised 2023) establishes supervisory expectations for federally regulated financial institutions (FRFIs) - banks, trust companies, and credit unions with federal charters - on residential mortgage underwriting. Key requirements include: mandatory mortgage stress test (qualifying rate = greater of contract rate + 2% OR floor rate set by OSFI, currently 5.25%); maximum LTV ratios (80% uninsured, 95% insured); portfolio-level LTV and debt service monitoring; expectation that FRFIs avoid non-amortising mortgages; and OSFI's expectation of conservative credit risk management in response to housing market conditions.
Pillar: Banking & Global Finance · Authority: Office of the Superintendent of Financial Institutions Canada · Version: 1.0.1 · Last updated:
Primary source: https://www.osfi-bsif.gc.ca/en/guidance/guidance-library
SHA-256 integrity: 7d43770c228acce203b2c7711b6f25cd370f136ea1b3f658fd1747c1d992b4b5
Primary Citations — 5 traced to source
- {"title":"OSFI Guideline B-20 - Residential Mortgage Underwriting Practices and Procedures (2018/2023)","url":"https://www.osfi-bsif.gc.ca/en/guidance/guidance-library","section":"Section 3 (RMRA portfolio strategy), Section 4 (LTV limits - 95%/80%/65%), Section 5 (income verification, GDS/TDS ratios), stress test qualifying rate methodology"}
- {"title":"OSFI Capital Adequacy Requirements (CAR) Guideline - Chapter 4 (Standardised Approach - Real Estate)","url":"https://www.osfi-bsif.gc.ca/en/guidance/guidance-library/capital-adequacy-requirements-car-guideline","section":"Residential real estate risk weights (20%-100%); insured vs. uninsured LTV thresholds; IRB mortgage LGD floors"}
+ 3 more citations (full bibliography, deterministic workflow, actionable schema and crosswalks) included in the vault unlock — $0.01 via Skyfire / L402 / Direct Base USDC.
Access
- Discovery (free): /api/v1/nodes/ca-osfi-guideline-b-20-mortgage-underwriting.json — 6-field metadata
- Vault (full node): /api/v1/vault/nodes/ca-osfi-guideline-b-20-mortgage-underwriting.json — full 13-key payload, $0.01 USDC (L402/Skyfire/Direct Base)
- Canonical URL: https://bidda.com/intelligence/ca-osfi-guideline-b-20-mortgage-underwriting
- Back to registry: Browse all 10,090 compliance nodes