Within the MIE segment, risk is concentrated in Ontario, particularly in the GTHA. The share of MIE balances in arrears for 90 days or more rose from 3.0% in the third quarter of 2023 to 11.1% in the first quarter of 2026 in the GTHA, more than 3 times the rate in the rest of Canada (figure 8).
However, because the survey data distinguish only between the GTHA and the rest of Canada, they do not allow separate analysis of trends in British Columbia or Southwestern Ontario. Nevertheless, the increase suggests that delinquent loans remain in arrears for longer, rather than reflecting only a rise in new delinquencies. This points to growing difficulty in resolving problem loans in the GTHA, with CMHC’s analysis highlighting 3 factors that help explain why:
- Interest-only lending is more common in the GTHA than elsewhere. Because these loans do not reduce principal over time, borrowers build less equity through repayment and have less protection if home prices fall. As of the first quarter of 2026, interest-only loans accounted for 69.7% of GTHA MIE balances, compared with 57.3% in the rest of Canada.
- Borrower equity has become thinner. The share of uninsured GTHA MIE balances with a loan-to-value ratio above 80% increased sixfold, from 1.6% in the first quarter of 2024 to 9.2% in the first quarter of 2026. This likely reflects limited principal repayment on interest-only loans and falling home prices.
- Debt burdens have risen sharply. Nearly one-third of GTHA MIE balances are now held by borrowers spending more than 60% of their income on debt payments.
Individually, these risks may be manageable. Together, they create a more fragile portfolio. More interest-only lending, thinner equity and heavier debt burdens reduce borrowers’ resilience if incomes weaken; payments rise or resale house prices fall. Although MIEs account for a small share of the mortgage market, GTHA MIE arrears could provide an early signal of broader mortgage market stress.