How the stress test works in 2026
The stress test is the affordability check every Big Six bank, federally regulated trust company and mortgage finance company must apply under OSFI Guideline B-20. It does not change the actual interest rate on your mortgage. It changes the rate the lender uses to compute "can this borrower afford the payment under stress?" The qualifying rate is always the higher of:
- Your contract rate plus 200 basis points (2 percentage points)
- The Bank of Canada minimum benchmark of 5.25%
At a 4.85% contract rate, you qualify at 6.85%. At a 2.99% promotional rate, you still qualify at 5.25% - the floor never drops below. The lender computes your monthly payment at that qualifying rate, then plugs that payment into your GDS and TDS ratios. The actual mortgage payment you make on day one is based on the contract rate. The qualifying rate is purely the affordability check.
Originally introduced in 2018 for insured mortgages and uninsured mortgages from federally regulated lenders, the stress test in November 2024 was modified: borrowers switching lenders at renewal no longer need to re-qualify under the stress test, matching the treatment of same-lender renewals. This helps borrowers shop their rate at renewal without re-qualifying on tighter income criteria.
| Contract rate | Contract + 2.00 pp | 5.25% floor | Actual qualifying rate | Monthly EMI on $500K, 25 yr |
|---|---|---|---|---|
| 2.99% | 4.99% | 5.25% | 5.25% | ~$2,989 |
| 3.50% | 5.50% | 5.25% | 5.50% | ~$3,054 |
| 4.50% | 6.50% | 5.25% | 6.50% | ~$3,355 |
| 5.00% (default) | 7.00% | 5.25% | 7.00% | ~$3,510 |
| 6.00% | 8.00% | 5.25% | 8.00% | ~$3,825 |
| 7.00% | 9.00% | 5.25% | 9.00% | ~$4,148 |
GDS and TDS ratios: the constraint that bites
Once the stress-test EMI is computed, the lender applies two debt-service ratios. The GDS (Gross Debt Service) ratio measures housing affordability:
GDS = (mortgage EMI at qualifying rate + property tax + heat + 50% condo fees) / gross monthly income
For insured high-ratio borrowers (under 20% down) the cap is 35% preferred / 39% max. For uninsured (20%+ down) it is 39% preferred / 42% max with strong credit. Many lenders treat the preferred figure as the practical cap.
The TDS (Total Debt Service) ratio adds all other monthly debt payments:
TDS = (housing costs + credit cards + car loans + student loans + lines of credit) / gross monthly income
Cap is 42% (insured preferred) / 44% (uninsured max). One thing that catches many first-time buyers: lenders impute 3% of total credit card limits as phantom monthly debt even if your balance is zero. Two cards with $30K limits each adds $1,800/month to your TDS denominator. Cut card limits before applying.
First-time buyers often see their TDS bite first when they have student loan repayments running, since OSFI counts the minimum monthly payment against TDS even on RAP-deferred federal portion.
CMHC, Sagen, Canada Guaranty: who insures what
If your down payment is under 20% of the price, your mortgage is "high-ratio" and must carry default insurance. Three providers exist:
| Provider | Type | Market share approx | Practical impact on you |
|---|---|---|---|
| CMHC (Canada Mortgage and Housing Corporation) | Federal Crown corporation | ~55% | Identical premium tables to others. CMHC insures rentals and 4+ unit properties that the private insurers shy away from. |
| Sagen (formerly Genworth Canada) | Private, owned by Brookfield since 2020 | ~30% | Same premiums. Sagen is sometimes more lenient on credit-history edge cases. |
| Canada Guaranty | Private, owned by Ontario Teachers' Pension Plan | ~15% | Same premiums. Specializes in low-volume specialty programs and rural lending. |
Premium ranges from 2.80% of the loan at 85% LTV up to 4.0% at 95.01%+ LTV. The premium is added to your loan balance (not paid upfront, except in Quebec, Ontario, BC, Manitoba and Saskatchewan where 8-9% PST is charged on the premium at closing). You then pay the premium back over your amortization period - with interest. On a $500K loan with 10% down, the 3.10% premium adds $15,500 to what you owe, which costs roughly $22,000 over a 25-year amortization at 5%.
You cannot generally choose the insurer. The lender picks. Big banks tend to use CMHC for higher-ratio loans and split private insurers for low-ratio insured "bulk insurance" pools.
Down payment rules and the new $1.5M cap
Canada's down payment minimums work in tiers:
- First $500,000 of price: 5% minimum.
- $500,001 to $1,500,000: 10% on the portion above $500K.
- Above $1,500,000: 20% minimum (uninsured only).
At a $600K purchase, the math is $25K (5% of $500K) + $10K (10% of $100K) = $35,000 minimum down. At $900K it is $25K + $40K = $65,000 minimum. The new $1.5M insured cap (effective December 15, 2024, up from $1M previously) opens up high-ratio mortgages to a much wider price band - critical in Toronto and Vancouver where median detached prices push past $1M.
Above $1.5M, you must put 20% down and the mortgage cannot be insured. This often constrains higher-price urban buyers who would otherwise have used insured 80% leverage.
30-year amortization for first-time buyers
One of the bigger 2024 rule changes: 30-year amortization is now available on insured mortgages, but only in specific cases.
| Buyer type / property type | Insured 25-yr | Insured 30-yr | Uninsured (20%+ down) |
|---|---|---|---|
| First-time buyer, new build (since Aug 1, 2024) | Yes | Yes | Up to 30 yr |
| First-time buyer, existing home (since Dec 15, 2024) | Yes | Yes | Up to 30 yr |
| Any buyer, new build (since Dec 15, 2024) | Yes | Yes | Up to 30 yr |
| Repeat buyer, existing home | Yes | No | Up to 30 yr |
Stretching from 25 to 30 years on a $500K loan at 5% drops the monthly EMI from approximately $2,908 to $2,684 - a savings of $224/month or roughly 7.7%. The total interest paid rises substantially because you carry the principal longer, but for buyers borderline on the stress-test cap, the extra 60 months of amortization can be the difference between qualifying and not.
If you are a first-time buyer of an existing property in 2026, you absolutely want to use the 30-year option to maximize your qualifying amount. See our guide to the cheapest Canadian mortgage rates in 2026 for the lenders most aggressive on first-time-buyer 30-year insured.
FHSA + HBP stacking and the foreign buyer ban
Three first-home stacking levers shape what gets to your down payment:
| Vehicle | Annual contribution | Lifetime cap | Tax on contribution | Tax on withdrawal | Repayment required? |
|---|---|---|---|---|---|
| FHSA (First Home Savings Account) | $8,000 | $40,000 | Deductible (like RRSP) | Tax-free, no repayment | No - the FHSA winner |
| HBP (Home Buyers Plan, from RRSP) | n/a (uses RRSP room) | $60,000 (raised from $35K Apr 2024) | RRSP contributions deductible | Tax-free at withdrawal | Yes - 15 years, starting year 2 |
| TFSA (Tax-Free Savings Account) | $7,000 | $102,000 cumulative since 2009 | Post-tax | Tax-free anytime | No |
| Combined per single first-time buyer | - | $100K+ FHSA + HBP | - | Tax-free | HBP portion only |
| Combined per couple | - | $200K+ | - | Tax-free | HBP portion only |
Open the FHSA first even with a $1 contribution to start your 15-year clock. Then contribute up to $8,000 annually (deductible against income, like RRSP). The withdrawal for first-home purchase is permanently tax-free, no repayment, making FHSA the clear winner over HBP for the same dollar. HBP is the second-best lever because the funds must be paid back over 15 years (missing a year's repayment turns that year's share into taxable income).
The foreign buyer ban remains active through January 1, 2027. The federal Prohibition on the Purchase of Residential Property by Non-Canadians Act bars most non-citizens and non-permanent residents from buying residential property. There are narrow exceptions for international students with 5+ years of Canadian filings, work-permit holders with substantive Canadian work history, refugees, and joint purchases with a Canadian spouse. Penalties for violation include a fine up to $10,000 and forced sale of the property.
Stacked on top of the federal ban, BC charges a 20% Non-Resident Speculation Tax and Ontario charges 25%. Both apply to taxable trustees and corporations as well as individuals, on top of regular Land Transfer Tax.
Run the math for your situation
Use our Canada Mortgage Stress Test Calculator to plug in your income, down payment, debts and contract rate. It computes your qualifying rate, GDS/TDS ratios, CMHC premium and maximum affordable price.