If you’re house-hunting around Peel, Dufferin, or Simcoe this fall, you’re not alone in wondering, “What can I actually afford?” Affordability has improved from the 2022–2024 peak stress, but it’s still a math-and-mindset exercise that blends your income, debts, down payment, today’s mortgage rates, and the qualifying rate used by lenders. Below, I’ll walk you through the 5 things that matter most right now, plus a quick example you can copy.
1) Start with today’s rate climate (and the stress test)
On October 29, 2025, the Bank of Canada trimmed its policy interest rate to 2.25%, continuing this year’s easing trend. That helps cool borrowing costs compared with last year. Bank of Canada
Even with lower rates, you must still qualify under Canada’s mortgage “stress test.” Lenders approve you at the higher of your contract rate + 2% or 5.25%. With many 5-year fixed and variable specials now in the ~3.5%–4.7% range (depending on down payment/insurability), most borrowers are qualifying at contract + 2% (e.g., a 4.6% quote means you’re tested at 6.6%). BMO+3OSFI+3TD Bank+3
Why it matters: if you can comfortably carry the stress-tested payment, you’ll find the actual monthly payment is lower. That gives you a built-in buffer.
2) Know your household ratios: GDS & TDS
Lenders use two affordability ratios:
- GDS (Gross Debt Service): housing costs (mortgage principal + interest at the stress-tested rate, property tax, heat, and half the condo fees if applicable) should be ≤ about 35% of gross monthly income.
- TDS (Total Debt Service): housing costs plus other debts (car loan, credit cards, lines of credit, child/spousal support) should be ≤ about 42–44% of gross income.
Every file is unique, but staying within these ranges will keep your approval strong and your budget livable. (These rules stem from federal underwriting guidance alongside CMHC/insurer standards.) Canada Mortgage and Housing Corporation
3) Down payment rules (and how they change your approval)
For owner-occupied purchases in Canada:
- Up to $500,000: minimum 5% down
- Portion $500,000–$999,999: 10% on that slice
- $1,000,000+: 20% minimum
Insured (“high-ratio”) mortgages under 20% down also include mortgage insurance premiums that get added to your loan; the premium rate varies by down-payment size. Canada Mortgage and Housing Corporation
Ontario bonus: first-time buyers can get up to $4,000 off the provincial Land Transfer Tax—fully offsetting LTT on homes up to $368,000 and reducing it on higher prices. (Toronto buyers may also get a municipal LTT rebate, but that’s outside our Caledon/Peel/Simcoe focus.) Ontario+1
4) Local market context: prices & competition
In the GTA overall, September 2025 sales were up 8.5% year-over-year, while the average price was down 4.7% versus September 2024. For buyers, that combination—more activity but softer prices—can open doors in family-friendly suburbs and rural edges where selection has improved. Always drill down by community and property type; micro-markets move differently. Toronto Regional Real Estate Board+2Toronto Regional Real Estate Board+2
5) The “all-in” monthly number (don’t forget these)
Your true affordability isn’t just the mortgage. Build your budget with:
- Mortgage payment at the quoted rate (plan with the stress-tested payment as your safety buffer)
- Property taxes (use municipal estimates)
- Utilities/heat (rural: consider propane/oil; well & septic maintenance)
- Insurance (home + mortgage life/disability if you choose it)
- Commuting & internet (rural areas: check fibre/cell service—key for work-from-home)
Maintenance (1–2% of home value annually is a conservative rule of thumb)
A simple, real-world affordability example (Fall 2025)
Scenario: Two borrowers with a combined $150,000 gross income, minimal other debt, targeting a freehold home in Caledon/Orangeville. They have $60,000 saved for down payment and closing costs.
- Rate & stress test: They’re quoted 4.69% on a 5-year fixed (a representative “special” from major banks this week). The qualifying rate becomes 6.69% (4.69 + 2). TD Bank
- Maximize approval vs comfort: Using typical lender ratios, their stress-tested approval might suggest a purchase price well above $700K. But approval isn’t lifestyle. We model both:
- Comfort budget target: Keep actual mortgage payment near 30–32% of gross income and total housing near 35%. With 10% down on, say, a $700,000 home (=$70,000), they’d need to reserve a chunk for closing costs, so more realistically they look at $650,000–$675,000 with 10% down, or $600,000–$625,000 with ~10% down and a healthier closing buffer. (Exact numbers shift with taxes, heating type, and insurer premiums.)
- Cash-flow check: At 4.69%, 25-year amortization, a $600,000 purchase with $60,000 down (10%) yields a mortgage roughly in the low-$540Ks after insurance; at the stress-tested 6.69%, payments are materially higher—so if you can handle that, your real payment at 4.69% should feel comfortable.
- Closing costs & rebates: Budget 1.5–2% of price for closing (legal, title, tax adjustments, home inspection, appraisal). First-time buyers can shave up to $4,000 off Ontario LTT, improving cash flow. New-build buyers should also evaluate any GST/HST rebates that may apply in 2025 program changes. Ontario+1
- Local market lens: With average prices down year-over-year and inventory improved in several suburban/rural pockets, targeting homes that need cosmetic updates (but have solid bones, good yards, and functional layouts) can stretch value—especially for families who prioritize space and schools. Toronto Regional Real Estate Board+1
Action checklist to find your number
- Lock a rate quote and a pre-approval (holds a rate for up to 90–120 days with many lenders). Ask your lender/broker to show both the contract-rate payment and the stress-tested payment so you can budget conservatively. (Most borrowers today are stress-tested at contract + 2% because posted minimum 5.25% is lower.) OSFI
- List every monthly debt and re-run the GDS/TDS math; trim or clear balances where possible to boost approval room.
- Decide your comfort range (the payment you can live with if life throws a curveball).
- Plan for ownership costs unique to our area (septic, well, snow, longer commute for rural; higher property tax/condo fees for town/city cores).
- Use available rebates (Ontario LTT refund for first-time buyers; confirm any 2025 federal relief on new builds). Ontario+1
- Watch market data monthly (sales, new listings, average price) in your target neighbourhoods; micro-trends matter more than headlines. Toronto Regional Real Estate Board
Bottom line
In Fall 2025, buyers have a window: policy rates are lower than a year ago, qualifying remains strict but predictable, and suburban/rural markets around the GTA offer more selection with softer average prices than last year. If you structure your approval with the stress-tested payment, use your rebates wisely, and shop neighbourhood-by-neighbourhood, you can translate “What can I afford?” into “Here’s our number—and the home that fits it.”
Want a personal affordability worksheet (with GDS/TDS formulas pre-filled) and a quick pre-approval checklist? Send me a note and I’ll share my template tailored for Caledon/Peel/Simcoe families.
~ Natacha Jamshidi