# What are the 2026 qualification rules for assuming a mortgage?

> The qualifying rate for the stress test is MAX(contract rate + 2%, 5.25%) as per OSFI B-20 rules; there is no exemption from the +2% buffer for mortgage assumptions.

Category: Strategy
Last verified: 2026-04-14
Source: https://ratellow.com/faqs/strategy/what-are-the-2026-qualification-rules-for-assuming-a-mortgage

## Answer
| Item | Assumption Requirement |
|------|------------------------|
| Credit Score | No official OSFI or CMHC minimum credit score requirement; 680+ is a lender guideline, not a regulatory rule. |
| GDS/TDS | 39%/44% |
| Stress Test | MAX(contract rate + 2%, 5.25%) (OSFI B-20 rule) |
| Release Fee | Release fees vary by lender and province; no standard regulatory range. $250-$500 is a reasonable estimate but not a verified regulatory figure. |

## Related guide
- https://ratellow.com/guides/assumable-mortgages-2026

## Sources
- Final Capital Adequacy Requirements Guideline (2026) — https://www.osfi-bsif.gc.ca/en/news/backgrounder-final-capital-adequacy-requirements-guideline-2026
- BANKOFCANADA — https://www.bankofcanada.ca/2025/07/staff-analytical-note-2025-21/#Introduction