Minimum income to qualify at six Fraser Valley price points
10% down, 30-year amortization, 4.5% contract rate (stress-tested at 6.5%), $250/mo strata, 0.35% property tax rate, no other debt. Federal CMHC ceiling (39% GDS) applied. Indicative only.
| Target price | Minimum household income |
|---|---|
| $500,000 | $98,927 |
| $700,000 | $135,729 |
| $900,000 | $172,531 |
| $1,100,000 | $209,333 |
| $1,300,000 | $246,134 |
| $1,500,000 | $282,936 |
Why we built the reverse calculator
Most affordability calculators answer "given my income, how much home can I afford?" That's the right question to start with, but it's not the question buyers ask once they've fallen for a specific listing. The question then becomes: "this Willoughby Heights townhouse is $895,000. What income do I need to make the bank say yes?" That's what this calculator does. It works the OSFI stress-test math backwards: from a target purchase price to the minimum qualifying household income.
The math, in one paragraph
Three federal pieces drive the answer. First, the lender qualifies you at the higher of your contract rate plus 2% or 5.25% (the OSFI B-20 stress test). Second, your housing costs (stress-tested mortgage payment plus property tax plus half of any strata fee plus heating) can't exceed 39% of your gross household income (Gross Debt Service ratio). Third, your housing costs plus every other monthly debt payment can't exceed 44% of gross income (Total Debt Service ratio). The calculator above figures out the smallest income that satisfies all three constraints at your target price.
Bank-by-bank reality vs the CMHC ceiling
CMHC publishes the 39% / 44% maximums (CMHC GDS/TDS rules), but the lender you use may underwrite tighter. Big banks typically run their own internal ratios that sit a percentage point or two below the CMHC ceiling on borderline files. Credit unions (provincially regulated, not bound by OSFI) often have more flexibility on borderline files. A buyer who lands on the federal ceiling with a big bank might still get approved at Vancity, Coast Capital, Prospera, or Envision for the same price with the same numbers. The calculator above uses the federal ceiling. If your real numbers are within $50K of the ceiling, get a mortgage broker to shop the file before assuming you're stuck.
The four numbers that move the answer most
- Contract rate. A 0.5% lower rate means a lower stress-tested payment, which means a lower required income for the same price. The calculator lets you adjust the rate.
- Amortization. 30 years vs 25 years lowers the monthly payment by roughly 10%, which lowers the required income proportionally. Since December 15, 2024, first-time buyers and new-construction buyers are eligible for 30-year amortizations on insured mortgages.
- Down payment. A larger down payment means a smaller loan, which means a smaller required income. Crossing 20% also removes CMHC insurance from the loan balance.
- Existing monthly debt. Every dollar of monthly debt payment shrinks your TDS room by a dollar. A $500/month car payment on a 4.5% rate at 30 years amortized into stress-test equivalent costs about $70,000 of qualifying mortgage.
Why two households at the same income qualify for different prices
Two couples earning the same $160K household income can qualify for materially different prices. Three reasons we see most often.
Existing debt. A couple with a $700/month car payment and $5K credit card balance qualifies for about $100K less mortgage than a couple with no other debt. Same income, same down payment. The TDS ratio absorbs the difference directly.
Strata fees on the target property. Buying a condo with $400/month strata costs you about $50K of qualifying mortgage compared to buying a townhouse with no strata. Half of strata is added to the GDS housing line.
Property tax. Buying in a higher-mill-rate municipality (Maple Ridge tends to be slightly higher per dollar of assessment than Surrey, for example) shaves a small amount off your qualifying mortgage. Our property tax calculator shows the difference across Fraser Valley municipalities.
How to use this calculator
Start with the listing price you're targeting. Set the contract rate to what your mortgage broker has quoted (or 4.5% as a 2026 ballpark). Choose 30-year amortization if you're a first-time buyer and want maximum room. The result is the minimum household income the lender will need to see to approve the purchase. If your real income is above that number, you can likely qualify. If it's below by more than a few thousand, shop a lower price or wait for income growth. Book a 20-minute chat with the FRIVE team if you want a second pair of eyes on a specific Fraser Valley listing and the income it would take.
Frequently asked questions
Is the required income before or after tax?
Before tax. Lenders use gross household income (the line above deductions) to calculate GDS and TDS ratios. Your after-tax income is whatever's left after CRA takes its share, which the lender doesn't see directly.
What if both partners earn income?
Combine both incomes if both partners are on the mortgage application. The calculator's result is total household income. Lenders use whatever is on the application — if only one partner applies, only that income counts.
Does the lender count my bonus or overtime?
Bonus and overtime require a two-year history before a lender will use them. T4 base salary is used at face value. Commission income gets averaged over two years and sometimes discounted. Self-employed income uses two years of T1 generals Line 15000.
What credit score do I need?
CMHC accepts scores down to 600 for insured purchases. Many lenders want 680 for their best rates, and some require 720+ for the best uninsured rates. Lower credit scores don't change the qualifying-income math directly but may bump your rate up, which raises the required income.
How accurate is this calculator for a specific lender?
It uses the federal CMHC ceiling (39% GDS, 44% TDS) and OSFI stress test. Specific lenders may use tighter internal ratios. For a precise number for your situation, a mortgage broker can run the file through 30+ lenders and tell you which ones say yes at what income.
Does the answer change if I'm self-employed?
Yes. Self-employed income usually gets a haircut: lenders often use the lower of two years of Line 15000, sometimes with a further discount. If your business has substantial write-offs, your qualifying income may be far below your actual cash flow. CMHC offers a Self-Employed product with looser documentation but a higher premium.
What if I have a co-signer?
A co-signer adds their income to the qualifying calculation, which lowers the required income from the primary applicant. The co-signer is legally on the mortgage and the debt shows up on their credit. Most often we see parents co-sign for adult children entering the market.
Does the answer include closing costs?
No. The required income is for the mortgage qualification only. Closing costs (BC PTT, legal fees, etc.) are paid in cash on top of the down payment. Run our cash to close calculator for that side of the math.
How much should I overshoot the required income by?
We usually suggest 10% to 20% above the minimum required income for comfort. The minimum means a lender will approve you; it doesn't mean the monthly payment fits comfortably in your budget. Buying at the qualifying ceiling almost always means carrying a payment that feels tight for the first few years.
What if my income drops after I buy?
The stress test exists specifically to give buyers a buffer against this kind of shift. The mortgage you qualified for at the qualifying rate should be one you can carry through a 100 to 200 basis point rate move at renewal or a moderate income dip. If you're worried about income volatility, qualify at a lower price than the ceiling allows.
Sources
- OSFI Guideline B-20 — Residential Mortgage Underwriting (stress test). osfi-bsif.gc.ca
- CMHC — Calculating GDS and TDS ratios. cmhc-schl.gc.ca
- Government of Canada — December 2024 mortgage rule reforms. canada.ca/department-finance
- FRIVE journal — GDS/TDS ratios BC mortgage qualifying. gds-tds-ratios-bc-mortgage-qualifying
