# What are the core OSFI/CMHC regulatory shifts impacting blend-and-extend?

> # What are the core OSFI/CMHC regulatory shifts impacting blend-and-extend?

Category: Renewal
Last verified: 2026-02-18
Source: https://ratellow.com/faqs/renewal/what-are-the-core-osficmhc-regulatory-shifts-impacting-blend-and-extend

## Answer
# What are the core OSFI/CMHC regulatory shifts impacting blend-and-extend?

The November 21, 2024, OSFI B-20 update removed the stress test for uninsured renewals. This 'straight switch' mentality has migrated to internal blend-and-extends, where lenders use existing borrower history to bypass the 2% MQR buffer.

**Data Summary:**

| Item               | Value                     |
|--------------------|---------------------------|
| Straight Switch Rule| Standardized late 2024    |
| Insured Cap        | $1.5 Million (Effective Dec 2024) |
| MQR Waiver         | Conditional on no principal increase |

## Related guide
- https://ratellow.com/guides/blend-and-extend-strategy

## Sources
- How will mortgage payments change at renewal? — https://www.bankofcanada.ca/2025/07/staff-analytical-note-2025-21/#The-results
- Clarifying OSFI's guidance on rental income — https://www.osfi-bsif.gc.ca/en/risks/real-estate-secured-lending/clarifying-osfis-guidance-rental-income-mortgage-classification