Finance Contractors at Banks Through Agencies: The PSB Risk Most People Miss

Finance contractor PSB risk does not go away because a staffing agency sits between you and the bank. Under the personal services business (PSB) rules, CRA asks whether you would reasonably be an employee of the party really receiving your services, usually the bank. If so, your Ontario corporation pays 44.5% instead of the current 11.2%.

Key takeaways

Why do so many finance contractors think the agency protects them?

The reasoning sounds sensible. Your corporation signs with the agency. The agency invoices the bank. The bank pays the agency, and the agency pays your corporation. You never sign anything with the bank. So, the thinking goes, you cannot be the bank’s employee.

I hear this from FP&A, controllership, risk, audit and compliance contractors, many of whom have spent years at the same bank through more than one agency. The paper says vendor. The day-to-day work often says something else.

The PSB rules do not stop at the paper. They look at who the work is really done for.

What does CRA actually ask in a three-party arrangement?

Start with the definition. Under section 125(7) of the Income Tax Act, your corporation carries on a personal services business in a year when two things are true:

• You, the person who does the work (the “incorporated employee”), or a person related to you, is a specified shareholder. That means owning 10% or more of any class of shares, directly or indirectly.
• You would reasonably be regarded as an officer or employee of the person or partnership receiving the services if your corporation did not exist.

Read the second part again. It is not about who signed with your corporation. It is about who receives the services. In a three-party arrangement, CRA looks at whether you would reasonably be an employee of the party your services are really provided to. For a finance contractor placed at a bank, that is usually the bank.

So picture the arrangement without your corporation, and ask who directs the work and whose business it is part of. The agency contract, the bank’s onboarding rules and the daily work all matter. None of them decides it alone.

There are two exceptions. The first applies if your corporation employs in the business, throughout the year, more than five full-time employees. That means at least six, full-time, all year. Whether owners or family members count depends on their real roles, so it needs review. The second applies if the amount for the services is received from a corporation associated with yours in the year. In a typical agency setup, the payer is not associated with your corporation, so this second exception rarely helps.

I set out the full rules on our page about PSB risk for incorporated contractors.

Why is finance work so hard to separate from a bank’s business?

The courts set out the employee-or-contractor tests in Wiebe Door Services Ltd. v. M.N.R. and 671122 Ontario Ltd. v. Sagaz Industries Canada Inc. The central question is whose business it is. Are you in business on your own account, or working inside someone else’s business?

Four factors carry most of the weight: control, ownership of tools and equipment, chance of profit and risk of loss, and integration. Hiring helpers, your own investment and how you manage the work are also considered.

Integration is the factor finance contractors most often overlook. A bank is a finance business. Measuring, controlling and reporting its activities is not a side task. It is how the bank runs and meets its regulatory duties.

Compare two engagements. An IT contractor builds a new data pipeline, hands it over and leaves. A finance contractor runs the monthly reconciliations for a business line, prepares variance commentary for the CFO’s reporting pack, or tests controls for the annual certification cycle. The first looks more like a project with an end. The second looks like a seat in the bank’s finance function. If the bank did not bring you in, it would often give the same work to an employee.

That is the integration problem. Your work can look like part of the bank’s own business, not your corporation’s.

Insurers look much the same, and so do many government finance roles.

Who really controls the work: the agency, the bank or you?

Control is the second place where the agency layer gives less cover than expected. The agency usually controls the commercial side. The bank usually controls the work. Here is how it tends to split.

Look at the bank’s column. That is where the work is directed, and where CRA looks.

Why do bank-run controls weigh so heavily?

Banks and insurers run formal internal control frameworks, because their regulators expect it. These controls decide what you can see, what you can post, what you can approve and who must review it.

For a finance contractor, the controls are often the job. You may be named as the performer or reviewer of a key control in the bank’s control documentation. You may have posting rights in the general ledger, approval limits, or access to the regulatory reporting system. The bank grants and removes each of those under its own policies.

Many of these rules exist for regulatory reasons and apply to every outside firm. I note that on file, because a rule that applies to every vendor reads differently from a manager directing your day. But when the controls place you inside the bank’s own approval chain, they point to both control and integration.

Why is supervision the strongest signal?

The clearest control fact is supervision by bank staff. A bank manager who assigns your work, reviews it like an employee’s work and approves your time off is acting like an employer.

Finance roles add a twist. Senior contractors often supervise or review the bank’s own staff. A contract controller may review reconciliations prepared by bank employees, or approve their journal entries. That puts you inside the bank’s management structure. Managing the client’s people points strongly toward integration.

Fixed hours matter less than people think. A 37.5 or 40 hour week is a control indicator, but hours alone never decide PSB status. The whole relationship is tested, year by year. I go through the wording that tends to cause trouble in contract clauses that raise PSB risk.

What does PSB status cost on a $163,200 contract?

Here is a worked example. It is an illustration, not a forecast for your file.

• Rate: $85 an hour, for 40 hours a week, for 48 weeks.
• Billings: $85 x 40 x 48 = $163,200, before HST.
• Business expenses: $9,000 for software subscriptions, a phone plan, professional liability insurance and accounting fees.
• No salary paid, and a full taxation year at the current 11.2% rate.

If the corporation is not a PSB, it deducts the $9,000. Taxable income is $154,200. Tax at 11.2% is $17,270.40.

If the corporation is a PSB, the $9,000 is denied. Taxable income is the full $163,200. Tax at 44.5% is $72,624.

The difference is $55,353.60 of extra corporate tax for one year.

The 44.5% is 33% federal, which includes the additional 5% tax under section 123.5, plus the 11.5% Ontario general rate. The 11.2% rate applies to income earned from July 1, 2026. Income earned before that date was taxed at 12.2%, so a December 31, 2026 year-end gets a blended 11.70%.

How much of that comes from section 18(1)(p)?

Split the $55,353.60 in two parts:

• The rate gap on the same $154,200 of income: 44.5% less 11.2% is 33.3 points, and $154,200 x 33.3% = $51,348.60.
• The denied expenses: $9,000 x 44.5% = $4,005.

Together, $51,348.60 plus $4,005 is $55,353.60.

Section 18(1)(p) limits a PSB’s deductions to four things: salary, wages or other pay to you; the cost of your benefits or allowances; certain amounts spent selling property or negotiating contracts that an employee could deduct; and legal costs to collect amounts owed for your services. Rent, software, equipment, travel, phone, insurance, accounting fees and similar costs are denied. Each denied dollar is taxed as if you never spent it.

What changes if you pay yourself a salary?

Salary paid to you is one of the few deductions section 18(1)(p) allows. Say the corporation pays you a salary of $120,000 in the same year.

• Not a PSB: $163,200 less $9,000 less $120,000 leaves $34,200. Tax at 11.2% is $3,830.40.
• PSB: $163,200 less $120,000 leaves $43,200. Tax at 44.5% is $19,224.
• Extra corporate tax: $15,393.60.

CPP and personal tax on the salary are not shown. The gap is smaller because less income stays in the corporation, which is why the pay mix matters more when PSB risk is real.

Does paying dividends later close the gap?

No. PSB income is not eligible for the small business deduction, so it is taxed at the full rate and adds to the general rate income pool (GRIP). Dividends paid from it can be designated eligible dividends. Even so, $100,000 of PSB income costs $44,500 in corporate tax. The $55,500 left, paid as an eligible dividend at the top 2026 Ontario rate of 39.34%, costs $21,833.70 in personal tax. That is $66,333.70 in total. The same $100,000 paid as salary, at the top 2026 Ontario rate of 53.53%, costs $53,530. The PSB route costs $12,803.70 more.

The cost also repeats for each year that is reassessed. I explain how that works in PSB reassessment.

How can you reduce finance contractor PSB risk?

Nothing here makes PSB risk disappear. These steps help you document your facts and support your position.

• Read the statement of work before you sign. Scope tied to deliverables, such as a model, a remediation project or a new process, reads differently from an open-ended seat in the team.
• Ask whether sign-off authority is really needed. If it is, note what you approve, under whose authority, and how it ties to your deliverables.
• Keep the bank’s onboarding rules. Note which rules apply to every outside firm, and why.
• Pay for your own tools. Equipment, software, training and professional liability insurance, where the bank allows it.
• Run the corporation as a business. Keep records of other clients, proposals and marketing.
• Describe the work on your invoices. Not only the hours.
• Review the facts each year. A renewal, a new manager or new duties can change the picture for that year.

I explain how agency setups fit together on our page about staffing agency contractor tax.

CRA guide RC4110, “Employee or Self-Employed?”, explains how CRA approaches a working relationship. You may also hear about Form CPT1, which is used to request a CPP and EI ruling on a worker’s status. That ruling covers CPP and EI only. It is not a PSB ruling for income tax, though CRA looks at similar facts. We review whether a request is useful in your facts.

We are accountants, not lawyers. New clause wording is a matter for your lawyer.

How do we help finance contractors with this?

We review your contract and working facts as part of tax planning. We read the agency contract, the statement of work and the bank’s onboarding rules, then ask how the work happens. We tell you which facts point toward employment, which point the other way, and what to keep on file.

That sits alongside the work we already do for your corporation: the T2 return, bookkeeping, payroll, GST/HST filings, and salary and dividend planning. If CRA reviews your corporation, we provide CRA audit support and representation as its authorized representative. You can see how we set up these files on our accountant for finance contractors page.

We work with incorporated Canadian businesses only, on a fixed flat-fee model. Our team includes a second designated CPA (CPA Ontario) and bookkeeping support staff.

If you work at a bank, an insurer or a government through an agency and want to know how your facts read, please book a consultation. Please bring your agency contract, your statement of work and the bank’s onboarding rules. You can also call us at 647-212-9559, 9AM to 8:30PM, Monday to Sunday.

Frequently asked questions

Does working through a staffing agency protect my corporation from the PSB rules?

Not on its own. In a three-party arrangement, CRA looks at whether you would reasonably be an employee of the party your services are really provided to. For a finance contractor at a bank, that is usually the bank. The agency contract and the bank’s onboarding rules both matter.

Why are finance roles at banks seen as higher PSB risk?

Finance, risk, audit and compliance are core functions of a bank. When your work is part of how the bank closes its books or meets its reporting duties, the integration factor can point toward the bank’s business. Bank-run controls and supervision add to the control side.

Does sign-off authority at the bank matter?

It can matter a great deal. Approving journal entries, reconciliations or control tests, or reviewing the bank’s own staff, puts you inside the bank’s control structure. We note what you approve, under whose authority, and whether it ties to a defined deliverable.

How much more tax would my corporation pay as a PSB?

On $163,200 of billings with $9,000 of expenses, corporate tax is $17,270.40 at 11.2% if it is not a PSB. As a PSB, the expenses are denied and tax at 44.5% is $72,624. That is $55,353.60 more for one year.

Can my corporation deduct its expenses if it is a PSB?

Only a few. Section 18(1)(p) allows salary and other pay to you, the cost of your benefits or allowances, certain costs of selling property or negotiating contracts that an employee could deduct, and legal costs to collect amounts owed. Rent, software, equipment, travel, phone, insurance and accounting fees are denied.

Can you make sure my corporation is not treated as a PSB?

No one can promise that. PSB status depends on the facts, tested year by year. We review your contract and working facts as part of tax planning, tell you what to document and help you reduce risk.

Would a CPT1 ruling settle my PSB status at the bank?

No. A CPT1 ruling deals with CPP and EI status, not PSB status for income tax, though CRA looks at similar facts. If you are considering one, we first review whether it is useful in your facts.