# How do CMHC insurance rules affect my 2026 renewal?

> If your mortgage is CMHC-insured (less than 20% down payment originally), you're limited to 25-year maximum amortization at renewal.

Category: Renewal
Last verified: 2026-04-14
Source: https://ratellow.com/faqs/renewal/how-do-cmhc-insurance-rules-affect-my-2026-renewal

## Answer
| Mortgage Type | Max Amortization | Payment Example ($500k @ 5%) | Stress Test Required |
|---|---|---|---|
| CMHC Insured | 25 years | $2,684/month | Only if switching lenders |
| Uninsured (20%+ down) | 30 years available | $2,230/month | Only if switching lenders |

- Insurance stays with the mortgage through renewals - no new premium required
- 25-year amortization maximum enforced by CMHC, Sagen, and Canada Guaranty
- First-time homebuyers who bought new builds after Dec 15, 2024 may have 30-year insured mortgages

**If you have significant equity (over 20%), consider refinancing to remove insurance and access 30-year amortization. Calculate whether the refinancing costs outweigh the monthly payment savings of $240/month.**

## Institutional highlights
- **CMHC Amortization Limits** Insured mortgages capped at 25-year maximum amortization regardless of equity position
- **2024 Federal Changes** 30-year amortizations now available for first-time buyers on new builds (effective Dec 15, 2024)
- **Insurance Portability** CMHC insurance remains active through renewals without additional premiums
- **Uninsured Mortgage Flexibility** 20%+ equity mortgages can access 30-year amortizations, reducing monthly payments significantly

## Related guide
- https://ratellow.com/guides/renewal-180-day-window

## Sources
- Mortgage Stress Test Rules — https://ratellow.com/guides/osfi-stress-test-explained
- Amortization — https://www.osfi-bsif.gc.ca/en/guidance/guidance-library/residential-mortgage-underwriting-practices-procedures-guideline-2017
- Debt service coverage — https://www.osfi-bsif.gc.ca/en/guidance/guidance-library/residential-mortgage-underwriting-practices-procedures-guideline-2017
- Debt service coverage — https://www.osfi-bsif.gc.ca/en/guidance/guidance-library/residential-mortgage-underwriting-practices-procedures-guideline-2017