Who We Help · IT Consultants · Incorporation
Incorporating as an IT contractor: the default move and the PSB trap it does not fix
For IT contractors, incorporation is usually a requirement before it is a choice — most staffing agencies and many end clients will not engage an unincorporated individual. The corporation brings real advantages: a 12.2% rate on retained profit, a legal wall around contract liability, clean USD invoicing. What it does not bring is protection from the personal services business rules, because a PSB is defined by how you work, not by the fact that you incorporated.
By the AnalytIQ Accounting team · Last reviewed: August 12, 2026
Why incorporation is the default in this market
Most Canadian IT contractors incorporate because the market makes them. Staffing agencies and large end clients routinely refuse to pay an individual, since engaging a corporation keeps employer payroll obligations off their books — so the choice is often incorporate or lose the contract. Once the corporation exists, the genuine advantages follow: roughly 12.2% tax on profit retained inside an Ontario corporation, a corporate party to indemnity and liability clauses instead of you personally, and an entity that can hold a USD account and complete a W-8BEN-E for American clients.
Notice what is missing from that list: a tax characterization. Whether CRA treats your company as a genuine business or as a personal services business depends on how you actually work — and the question only exists because you incorporated.
The PSB trap: incorporation creates the question, it does not answer it
A personal services business is a corporation whose incorporated worker would reasonably be considered an employee of the client if the corporation were not there, where the worker or family owns 10% or more of any class of shares — and the test looks straight through the paperwork at conduct. CRA weighs who controls the work, whose tools are used, who carries financial risk, and how integrated you are into the client's organization. A corporation with more than five full-time employees is exempt, which describes almost no one-person consultancy.
The consequences are severe. A PSB loses the small business deduction and the general rate reduction, pushing the corporate rate to roughly 44.5% in Ontario, and its deductions collapse to little more than the salary it pays the incorporated worker. Reassessments typically arrive for several years at once, which is how a comfortable contract becomes a six-figure problem.
One client, and what the optics actually turn on
Having one client does not make you a PSB — but it removes the easiest counter-argument, so the remaining facts have to carry the weight.
| Factor | Reads like employment | Reads like a business |
|---|---|---|
| Control | Client sets your hours and manages you inside its hierarchy | You commit to deliverables and decide how the work gets done |
| Tools | Their laptop, their licences, their environments only | Your own equipment and licences wherever security allows |
| Financial risk | Guaranteed hourly pay with no downside | Fixed-price phases, rework at your cost, gaps between contracts |
| Substitution | Only you, personally, may do the work | Your corporation may subcontract or bring in help |
| Trajectory | The same single client renewing quietly for years | New clients over time, overlapping engagements, visible marketing |
Contract language helps, but conduct decides. We tell contractors to keep the evidence a business generates naturally: proposals to prospects, business insurance, your own equipment invoices, and any second revenue stream — even a small one changes the file.
Holdco questions for savers
Most one-person consultancies do not need a holding company on day one — the question earns attention once retained profit becomes a real investment portfolio. A holdco can receive tax-free intercorporate dividends from the operating company (conditions apply) and move savings beyond the reach of an operating-company lawsuit, which matters more as indemnity clauses in enterprise contracts get heavier.
The counterweights are a second set of corporate filings and the passive income grind: once associated companies earn more than $50,000 of investment income in a year, the group's small business deduction starts shrinking. For many savers the simpler first step is investing inside the single corporation and revisiting the structure when the portfolio, not the consulting, starts to feel like the bigger asset.
Setting it up cleanly
Either federal or Ontario incorporation works for consulting, and a numbered company is fine — clients care that the entity exists and clears their vendor checks, not what it is called. The corporation needs its business number, a corporate tax (RC) account, and a payroll (RP) account before the first salary run. Register for GST/HST immediately even if most billing goes south of the border: services exported to US clients are generally zero-rated, and registration lets you recover the HST on your own laptop, software, and subcontractors.
The cross-border layer — W-8BEN-E, treaty positions when you have no US permanent establishment, and what happens if you convert to a US W-2 role mid-year — lives on our cross-border tax page for IT consultants. For the full setup and the filings that keep the corporation in good standing, see incorporation and compliance.
Common questions.
Does incorporating protect me from the PSB rules?
No — it exposes you to them, because the PSB rules only apply to corporations. Whether they bite depends on how you work: control, tools, financial risk, and integration with the client, not on the incorporation itself.
I have one long-term client. Is my corporation automatically a PSB?
No. One client weakens the optics but decides nothing on its own. Deliverable-based contracts, your own equipment, real financial risk, the right to subcontract, and efforts to win other work all push the file the other way.
What happens if CRA reassesses my corporation as a PSB?
The corporation loses the small business deduction and rate reduction — roughly 44.5% tax in Ontario — and most deductions other than your salary are denied, usually for multiple years at once. Paying yourself mainly by salary limits the damage if it ever happens.
Related reading
Incorporate with eyes open on PSB.
Book a consultation and get a plain answer on exactly what applies to you.