Key takeaways
- A Personal Services Business (PSB) is what the CRA calls a corporation that is really an employment relationship in disguise — the "incorporated employee." Reclassification is the CRA's tool to undo the tax advantage.
- Once reclassified, a PSB loses the small business deduction and most operating expense deductions, and is taxed at a combined federal-plus-provincial rate of roughly 41%–44.5%, not the 12%–15% small-business rate.
- The four tests are: a specified shareholder (someone who owns at least 10% of any class of shares, alone or with related persons), an employee-like relationship with the client, five or fewer full-time employees, and the income coming from a single primary client.
- The single biggest reclassification signal the CRA can read off your file without an interview is a corporate address that points to the client's premises — a real Canadian commercial street address kept separate from the client is the cheap, audit-stable fix.
Short answer
A Personal Services Business is a Canadian corporation that the CRA looks at and concludes would have been a regular employment arrangement if the corporation were not in the middle. The CRA's term for the worker behind such a corporation is the incorporated employee. The PSB designation is automatic if four conditions all hold for a given engagement — no election, no notice. The corporation then loses the small business deduction, loses most expense deductions, and is taxed at roughly 41%–44.5% combined federal-plus-provincial, depending on the province.
The four-condition test is what the CRA actually checks, and the corporate address on file is one of the visible inputs.
The four PSB tests, in CRA's wording
Per the Canada Revenue Agency's Personal Services Business page, a corporation carries on a personal services business in a taxation year if all of the following are true:
- Specified shareholder. The individual performing the services on behalf of the corporation, or a person related to that individual, owns at least 10% of any class of shares of the corporation (the "specified shareholder" test).
- Incorporated employee relationship. The individual would reasonably be regarded as an officer or employee of the entity to which the services are provided, if not for the existence of the corporation. This is the substance-over-form test the CRA actually argues at audit.
- Five or fewer full-time employees. The corporation does not employ in the business throughout the year more than five full-time employees.
- Income from a related-or-single client structure. The amount paid for the services would, were it not for the corporation, be received by the individual personally — in practice, this is the single-client or associated-clients pattern.
Note that the CRA tests are conjunctive — all four must hold for the year. A genuine multi-client consulting corporation with five-plus full-time staff fails test 3 and test 4 and is not a PSB regardless of how the contracts read.
| PSB test | What the CRA checks | What fails the test (i.e., keeps you out of PSB) |
|---|---|---|
| Specified shareholder (≥10%) | Share register, related-person attribution | Truly arm's-length corporate ownership, dilution below 10% |
| Incorporated employee | Contract terms, control, integration, tools, risk | Genuine contractor indicia (own tools, multiple clients, profit/loss risk) |
| ≤5 full-time employees | Payroll account, T4 filings | Six or more full-time arm's-length employees year-round |
| Single primary client | Revenue breakdown, T4A/T5018 issuers | Multiple unrelated clients with no single dominant payer |
What reclassification actually costs
When the CRA reclassifies a corporation as a PSB for a taxation year, three things happen at once, and they compound:
- The small business deduction is denied. A normal CCPC pays roughly 9% federal plus a low provincial rate on active business income up to $500,000. Per the CRA's PSB tax treatment guidance, a PSB instead pays the general corporate rate plus an additional 5% federal surtax on PSB income — that pushes federal alone to roughly 33%, and combined federal-plus-provincial typically lands in the low-40% range, with higher-tax provinces approaching the mid-40s.
- Operating expense deductions are restricted. A PSB cannot deduct the everyday business expenses a normal corporation deducts — most professional services, home-office costs, vehicle expenses, supplies, and so on. The PSB is essentially limited to the salary and benefits paid to the incorporated employee and a narrow list of items in paragraph 18(1)(p) of the Income Tax Act.
- Reassessment is retroactive. The CRA reassesses prior years, not just the year under audit. Interest accrues on the reassessed balance from the original due date.
The combined effect is that a corporation that earned, say, $150,000 of consulting income while treating itself as a CCPC can find itself with a multi-year reassessment in the tens of thousands of dollars, plus interest, plus the loss of any expense deductions claimed in those years.
The PSB Pilot and the trucking signal
The CRA has, in recent years, run a focused PSB Pilot compliance program targeting incorporated workers in high-risk industries, and the trucking industry has received particular attention. Under the program, businesses that pay an incorporated worker without filing the required information return — typically a T4A for subcontractor payments over $500, or a T5018 in the construction industry — face penalties on the payer side, in addition to the reclassification consequences for the corporation.
The lesson for contractors and consultants beyond trucking: the CRA has moved from theoretical PSB risk to active program-level enforcement, with industries selected by data analysis on T-slip filings and corporate returns. The address on the corporate file is one of the cheap data signals the program can sort on without an audit interview.
The address signal most incorporated employees miss
The first three PSB tests (specified shareholder, ≤5 employees, single client) are visible on the corporation's own return. The second test — the incorporated employee test — is the one the CRA has to argue, and it is the one a corporate address can quietly support or undermine.
Two address patterns make the incorporated-employee argument easier for the CRA:
- The corporation's registered or mailing address is the same as the primary client's premises. From the CRA's perspective, this looks like "the worker has no business presence separate from the client" — which is one of the classic incorporated-employee indicia.
- The corporation's address is the worker's home, and the worker's home is the only place the work is performed for a single client. This combination supports the "would reasonably be regarded as an employee" reading because there is no separable place of business.
A corporate address that points to a real Canadian commercial street address — distinct from the client, distinct from the residence — does not by itself prove independent contractor status, but it removes one of the visible weak signals the CRA reads off the file before deciding whether to open the file at all. This is the same address logic that applies to the independent contractor T2125 case covered in Independent Contractor and Consultant Business Address in Canada — but with PSB, the consequence of getting it wrong is reclassification rather than slow audit.
The corporate registered office and mailing address rules themselves are covered in Does your Canadian business need a registered address? What the CRA actually requires. The PSB-specific point is that the same address rule the CRA enforces for compliance also serves as the visible signal the CRA uses for risk-scoring — so the address choice does double duty.
How to avoid the PSB designation in practice
The CRA's substance-over-form test cannot be defeated by paperwork alone. The structural elements that move a corporation out of PSB territory are real and operational:
- Multiple unrelated clients. Genuine independent contractors typically serve more than one client in a year, with no single client representing the overwhelming majority of revenue. Diversified revenue weakens test 4.
- Contractor indicia in every contract. Control, integration, tools, financial risk, opportunity for profit and loss — the Wiebe Door and Sagaz Industries factors that Canadian tax courts have applied for decades. Contracts that read like employment agreements (set hours, dedicated workstation at client premises, exclusivity, no subcontracting right) lose test 2.
- A real separable business presence. Own equipment, own software, own subcontractors where the work allows. A business address that is not the client's address and not the residence is the cheapest piece of separable presence.
- Five-plus full-time staff if scale allows. Once a corporation employs six or more arm's-length full-time staff year-round, test 3 fails — which is why genuinely scaled consultancies are out of PSB risk regardless of their client mix.
A corporation that genuinely meets several of these structural tests is not a PSB. The address rule alone does not protect a corporation that is one client deep and works at the client's premises five days a week — but it materially affects whether the CRA opens the file in the first place.
How Auteur fits the PSB-risk profile
Auteur provides a real Canadian commercial street address in Toronto or Vancouver in proper Canada Post Unit/# format. For an incorporated contractor or consultant — the typical PSB-risk profile — that address serves three purposes simultaneously:
- It sits on the corporate registered office (for federal CBCA or provincial OBCA/BCBCA filings) so the public corporate record points to a commercial address, not the client and not the residence.
- It sits on the CRA Business Number mailing address, the GST/HST account, and the corporate T2 — same address across every CRA surface, which is what the Business Number page recommends for reducing address-mismatch flags.
- It sits on client contracts and invoices, which is the address the client's compliance vendor checks during onboarding.
The address is Canadian-owned and CRA-ready — the two axes that matter for PSB-risk profiles — and is kept structurally separate from any client's premises. (Reserve a Toronto or Vancouver address.)
FAQ
What is a personal service business (CRA)? A Personal Services Business is a Canadian corporation that the CRA treats as an incorporated employment relationship rather than a real business. The CRA applies four tests: the individual performing services is a specified shareholder (≥10% of any class of shares, alone or with related persons), the individual would reasonably be regarded as an officer or employee of the client if not for the corporation, the corporation has five or fewer full-time employees, and the income comes from a single primary client structure. If all four hold for a taxation year, the corporation is a PSB for that year and loses the small business deduction and most expense deductions.
What is the difference between personal services income and business income? Active business income earned by a Canadian-controlled private corporation qualifies for the small business deduction up to $500,000 of taxable income, taxed at roughly 9% federally plus a low provincial rate (combined ~12%–15%). Personal services business income is taxed at the general corporate rate plus a 5% federal PSB surtax — roughly 33% federal alone, ~41%–44.5% combined — and the corporation cannot deduct most of the operating expenses a normal CCPC deducts. The category of income depends on whether the four PSB tests are met for the year, not on how the corporation labels the income.
How to avoid being a personal services business? Fail at least one of the four CRA tests through real structural change, not paperwork. The practical levers are: serve multiple unrelated clients so no single client dominates revenue (fails test 4), draft contracts that establish genuine contractor indicia under Wiebe Door — control, tools, risk, ability to subcontract (fails test 2), employ six or more full-time arm's-length staff year-round if scale supports it (fails test 3), and maintain a separable business presence including a commercial business address distinct from any client and from the residence. A virtual mailbox at a commercial Canada Post Unit/# address contributes to the separable-presence side but does not by itself defeat PSB classification — the test is substantive.
Is there tax on personal services? Yes — and at a punitive rate. Personal services business income inside a Canadian corporation is subject to the general federal corporate rate plus an additional 5% federal surtax (roughly 33% federal), and the corporation cannot deduct most of the operating expenses available to a normal active-business CCPC. Combined federal-plus-provincial rates land around 41% in lower-tax provinces and 44.5% in higher-tax ones. Reassessment is retroactive across the years the PSB tests held, plus interest. This is materially worse than either the small-business-deduction rate of ~12%–15% or the personal employment-income rate for the same dollars, which is the deliberate design point of the PSB rules.
Bottom line
The PSB designation is the CRA's mechanism to undo the tax advantage of putting a corporation between a worker and what is functionally an employer. The four tests are conjunctive and the consequences — small business deduction denied, expense deductions restricted, retroactive reassessment at ~41%–44.5% — are severe. The corporate address on file is not the dispositive test, but it is one of the visible signals the CRA's PSB Pilot can sort on at scale, and it is the cheapest one to get right.
A commercial Canadian street address that is structurally separate from the client and the residence is the audit-stable choice. Reserve a Toronto or Vancouver address and the same address goes on the corporate registered office, the CRA Business Number file, the GST/HST account, and every client contract — one stable address across every surface the CRA, the client's compliance vendor, and the corporate registry can see.