The client
A grain-farming couple outside Saskatoon, sole proprietors filing a T1 Statement of Farming Activities every year, wanted to move into a larger farm residence. One spouse also holds a steady off-farm T4 role with an employer that has nothing to do with the farm’s year-to-year swings. The Saskatoon-area market comfortably supported the purchase price — the income history was the harder problem.
Borrowers
Farming couple, sole proprietorship
One spouse also on a steady off-farm T4
2022 net farm income
$148,000
A strong year
2023 net farm income
$96,000
Early drought effects
2024 net farm income
$34,000
Drought and hail year
Off-farm T4
$42,000/year
Stable, unrelated to the farm
New purchase
$540,000 farm residence, Saskatoon area
10% down, insured
The problem
They took the file to their existing bank first. Its policy for self-employed farm income is a straight 2-year average of the two most recently filed T1 years — standard practice for volatile self-employed files. That policy happened to land on the worst possible pair of years.
The 2-year average
- ▸2023 + 2024 net farm income: $96,000 + $34,000 = $130,000, averaged to $65,000/year ($5,417/mo)
- ▸Combined with the $3,500/mo off-farm T4: $8,917/mo in qualifying income
- ▸The gross debt service ratio on the insured purchase: 44.2% — against CMHC’s 39% maximum. Declined.
The problem was never the farm’s underlying profitability — it was that 2024 was a documented drought-and-hail year, and the bank’s 2-year window landed squarely on it plus a second year already softened by the same weather pattern. 2022, a strong $148,000 year, fell entirely outside that window. The couple had AgriStability program statements corroborating that 2023 and 2024 were program-recognized downturn years for this specific operation — but a 2-year policy has no mechanism to look further back and use them.
The numbers
First, the loan itself. At 10% down this is an insured purchase, which is what makes CMHC’s GDS/TDS maximums hard numbers rather than lender preferences.
| Structuring the insured loan | Amount |
|---|---|
| Purchase price | $540,000 |
| Down payment (10%) | −$54,000 |
| Base mortgage (90% LTV) | $486,000 |
| CMHC premium — 3.10% in the 85.01–90% LTV band, capitalized | +$15,066 |
| Total insured mortgage | $501,066 |
The minimum down payment at this price is $29,000 — 5% of the first $500,000 plus 10% of the rest — so the $54,000 actually put down clears it with room. Amortization is 25 years.
| Rate & payments | Figure |
|---|---|
| Contract rate — 5-year fixed (illustrative, not a quote) | 4.79% |
| Minimum qualifying rate — greater of contract + 2% and 5.25% | 6.79% |
| Monthly P&I at the qualifying rate — the ratios run on this | $3,445 |
| Monthly P&I at the contract rate — what the family actually pays | $2,855 |
Farm income, three ways
| T1 net farm income | Amount |
|---|---|
| 2022 | $148,000 |
| 2023 | $96,000 |
| 2024 (drought/hail) | $34,000 |
The two averaging windows tell very different stories about the same farm.
| Averaging window | Farm income | Combined w/ off-farm T4 | GDS | TDS |
|---|---|---|---|---|
| 2-year (2023+2024) | $5,417/mo | $8,917/mo | 44.2% ✗ | 49.4% ✗ |
| 3-year (2022–2024) | $7,722/mo | $11,222/mo | 35.2% ✓ | 39.3% ✓ |
Both ratios move together for the same reason: the 3-year window pulls in 2022’s strong year, which the 2-year window excludes entirely. On the same insured loan, total debt service ratio follows GDS from a failing 49.4% down to a comfortable 39.3%, once the truck loan is added on both sides. Qualifying at the stress-tested rate costs $590/mo more than the $2,855/mo the family will actually pay at the contract rate.
The solution
A mortgage broker licensed through Saskatchewan’s Financial and Consumer Affairs Authority did two things.
First, re-ran the income on a 3-year window. Not every lender defaults to a straight 2-year average for self-employed farm income; several will average three years when the file shows genuine year-to-year volatility and the borrower can document why. The general mechanics of averaging self-employed income are the same ones covered in our two-year-average walkthrough — this file simply needed a lender whose policy allowed a third year in, which not every lender's does.
Second, packaged the AgriStability documentation. The program’s statements corroborated that 2023 and 2024 were recognized downturn years for this specific operation, not a story assembled for the mortgage file. That corroboration was what made a lender willing to look past two weak years to a genuinely stronger three-year picture.
What the lender needed to see was exactly what the package proved: a documented, program-recognized downturn rather than a chronically weak operation, with ratios inside 39/44 once a fair averaging window was applied.
The outcome & the closing math
Approved and funded: insured at 90% LTV, 25-year amortization, on a 5-year fixed term.
The lender also required evidence of funds to cover closing costs on top of the $54,000 down payment, which the same 90-day statements demonstrated.
What to take from this file
- 01Self-employed income averaging windows are lender policy, not law. Run the numbers under more than one window before treating a decline as final — this file moved from 44.2% to 35.2% GDS on the same farm, the same lease of years, just a different lens.
- 02Documentation of why a bad year happened changes what a lender will accept. AgriStability statements corroborating a drought/hail year carry more weight than the borrower simply saying so.
- 03The approval math runs at the qualifying rate, not the contract rate. This file qualifies at 6.79% and pays at 4.79% — a $590-a-month gap between the payment that decides the ratios and the payment that hits the bank account.
- 04A single bad year inside a short averaging window can swing GDS by nine points even when the underlying business is fine across a longer horizon — know which years a policy is about to look at before you submit.
- 05Check the minimum down payment against what’s actually available. This file needed $29,000 minimum and had $54,000 — comfortable room that mattered less than the income-averaging fix, but worth confirming on every file regardless.
Sources
Every regulatory figure in this file traces to one of these primary sources. Client details and anything that varies by lender are illustrative, as flagged below.
- ▸CMHC — Purchase (Mortgage Loan Insurance) — default-insurance premium schedule by LTV band (25-year amortization).
- ▸CMHC — CMHC Home Start — minimum down payment tiers (5%/10%) and the $1.5M insured price cap.
- ▸OSFI — Minimum qualifying rate for uninsured mortgages — the minimum qualifying rate — greater of contract rate + 2% or 5.25%.
- ▸CMHC — CMHC Reviews Underwriting Criteria — GDS 39% / TDS 44% maximums and the 600 credit-score floor for insured files.
- ▸Provincial/territorial mortgage-broker legislation fetched directly (bclaws.gov.bc.ca, legisquebec.gouv.qc.ca, fcaa.gov.sk.ca, web2.gov.mb.ca, nslegislature.ca, assembly.nl.ca) plus FCNB's own site for NB and CanLII's index for PE — see notes for per-province method — provincial mortgage regulators and licence titles.
Illustrative in this file — lender-specific, not rules:
- ▸4.79% contract rate — rates move daily; not a quote.
- ▸3-year (vs. 2-year) farm-income averaging window — each lender sets its own averaging policy for volatile self-employed income.
- ▸$150/mo heat allowance — lender-standard estimate, not a rule.
Authority & provenance
How this case file was built
We publish the origin, the verification method and the reviewer for every case file, so you can judge how far to trust it before you rely on it with a client.
Where it comes from
Derived from files handled by Treadstone’s fulfillment desk and from scenarios contributed by partner brokerages. Names, employers, exact amounts and dates are changed so no client or file is identifiable.
Provenance: Composite — a pattern seen repeatedly on fulfilled files, not a single transaction.
What is verified
Every regulatory figure traces to a primary source listed above and was checked against it on the date shown. The arithmetic is recomputed by machine on every rebuild.
Anything that varies by lender is labelled illustrative rather than stated as a rule.
Who reviewed it
Reviewed for Canadian regulatory accuracy before publication, and re-checked whenever a cited rule changes.
Reviewed by: Nicholas Parson, Treadstone Associates — reviews every case file before publication.
This case file is professional reference material for licensed mortgage professionals. It is not advice to a borrower, and it is not a lender commitment. Insurer rules, qualifying rates and provincial taxes change — confirm the current position with the insurer, regulator or lender before you rely on any figure here in a live file.