Key takeaways
- →A worker paid via T4A for fees for services rendered is treated closer to self-employed for qualifying purposes, even without a registered business or incorporation.
- →The core underwriting question isn't just how much the contract pays — it's how likely the work is to continue beyond the current contract term.
- →A single-client contractor faces more scrutiny than one with several concurrent clients, because losing the one contract means losing all the income.
- →A brand-new contract with no history is the hardest scenario to qualify and usually needs a longer track record in the same line of work to compensate.
The shift from a T4 to a T4A can feel like a technicality — same work, same client relationship, different tax slip — but it changes how a lender reads the file. A T4 employee has an ongoing employment relationship that, absent notice, is presumed to continue. A T4A contractor has a contract, and contracts end.
That difference is what “proving continuance” is really about: not proving the contract exists, but building a credible case that the work — this contract, the next one, or the one after that — keeps generating income for the life of the mortgage.
01 · Why does a T4A slip change how income is qualified?
A T4A reporting fees for services (box 048) signals the payer considers the worker an independent contractor, not an employee — no source deductions, no employer contributions, and legally a business-to-business relationship rather than an employment one. For underwriting purposes, that income flows through the self-employment lines on the T1, the same as a sole proprietor's business income, and is generally qualified using two years of that income and the Notices of Assessment.
This holds even for a contractor who works full-time hours for a single client and, in every practical sense, functions like an employee — the tax treatment and the underwriting treatment follow the slip, not the day-to-day reality of the arrangement.
02 · What does “proving continuance” actually mean to a lender?
It means building evidence that the income is likely to persist past the current contract's end date — not certainty, but a reasonable basis for confidence. The strongest evidence is a track record: two or more years of contract income in the same field, ideally with the same client or a pattern of contracts renewing or replacing one another without gaps.
A current contract with a defined end date isn't automatically a problem — almost all contracts have one — but a lender will want to see either a renewal already in place, a strong history of this contractor's contracts renewing in the past, or in-demand, transferable skills that make re-engagement plausible even if this specific contract ends.
03 · Does having one client instead of many change anything?
Yes — concentration risk is a real underwriting concern. A contractor with one client representing all their income is, functionally, dependent on a single relationship the way an employee is dependent on a single employer, except without the protections (notice periods, employment standards) that come with actual employment.
A contractor with several concurrent clients presents a more resilient income picture: losing one contract reduces income rather than eliminating it entirely. This doesn't disqualify single-client contractors — many are qualified successfully every year — but it does mean the continuance evidence for that one relationship needs to be stronger.
Contract income, credibly documented
Turn a contract into a qualifying continuance story.
Treadstone's fulfillment team builds the documented case — history, renewal pattern, client concentration — that gets a T4A contractor's file read the way an underwriter needs to read it.
04 · How is a brand-new contract, with no history yet, handled?
This is the hardest version of the file. A contract signed weeks or a few months ago, with no prior T4A or self-employment history in the same line of work, gives an underwriter almost nothing to average or trend — it's a projection of future income, not a documented pattern of past income.
The strongest compensating factor is a track record in the same profession, even if the specific contract is new — a contractor who's worked steadily as a T4A consultant in their field for years, just recently switched clients, is a materially different case from someone contracting for the first time after leaving salaried employment. The latter often needs to wait and build a documented history before that contract income can be relied on for qualifying.
05 · What documents does a T4A contractor need to assemble?
- 01Two years of T4As and Notices of Assessment, or as much history as exists if the contracting career is newer.
- 02The current signed contract, including its term, rate, and renewal or termination provisions.
- 03A letter or evidence of contract history — prior contracts, renewals, or a pattern of consecutive engagements in the same field.
- 04A T2125 if business expenses are claimed against the contract income, so the qualifying figure reflects net rather than gross earnings.
Frequently asked questions
This article is general information to help you scale — not a substitute for tailored advice on your specific business, licensing, or compliance obligations. All figures are illustrative examples for planning purposes; actual costs vary by province, market, and brokerage.