# How do condo fees exactly impact GDS/TDS calculations?

> Standard CMHC and B-20 guidelines state that 50% of the monthly condo fee must be included in the GDS/TDS calculation.

Category: Purchasing
Last verified: 2026-02-18
Source: https://ratellow.com/faqs/purchasing/how-do-condo-fees-exactly-impact-gdstds-calculations

## Answer
Standard CMHC and B-20 guidelines state that 50% of the monthly condo fee must be included in the GDS/TDS calculation. For example, if the fee is $600/month, the lender adds $300/month to your carrying costs. Heat and water are often included in condo fees, which is why lenders only take 50% (assuming the other 50% covers utilities which are already part of GDS).

## Related guide
- https://ratellow.com/guides/condo-mortgage-nuances

## Sources
- FCAC Condo Buying Guide — https://www.canada.ca/en/financial-consumer-agency/services/mortgages/renew-mortgage.html#toc3
- B-20 Condo Underwriting — https://www.osfi-bsif.gc.ca/en/guidance/guidance-library/residential-mortgage-underwriting-practices-procedures-guideline-2017#2.4.2