GDS and TDS at the qualifying rate
Line by line, the way a lender adds up your ratios for one price.
Ratio testat 6.12%
FAIL
GDS is over the limit.
GDS42.1% of 39% limit
TDS47.8% of 44% limit
| Line | At 6.12% | At 4.12% |
|---|---|---|
| Mortgage payment (incl. premium) | $3,360 | $2,691 |
| Property tax | $400 | $400 |
| Heating | $100 | $100 |
| Condo fees (50%) | $0 | $0 |
| GDS costs | $3,860 | $3,191 |
| Car and other loans | $450 | $450 |
| Student loans | $0 | $0 |
| Cards and lines of credit (3% of balance) | $75 | $75 |
| TDS costs | $4,385 | $3,716 |
| GDS ratio | 42.1% | 34.8% |
| TDS ratio | 47.8% | 40.5% |
Estimate, not advice. Educational estimate only, not financial, mortgage, tax or legal advice. Lenders, insurers and governments set their own rules and can change them; confirm with a licensed professional before you decide.
GDS 42.1%, TDS 47.8% at 6.12%. Does not pass.
Assumptions & sources
Assumptions
- GDS and TDS limits: CMHC's 39% and 44% for insured loans. Uninsured lenders set their own, often similar.
- Revolving balances (cards, lines of credit) are counted at 3% of the balance per month, a common lender convention; a secured line of credit may instead be counted at its own payment.
- Insurance premium is added to the mortgage when the down payment is under 20%.
Sources
- CMHC — Calculating GDS / TDS. Checked .
- OSFI — Minimum qualifying rate for uninsured mortgages (effective January 29, 2026). Checked .
- CMHC — Homeowner mortgage loan insurance: Purchase (eligibility). Checked .
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