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Tax Deductions for Commissioned Employees in Ontario: What's Different

How commission-based employees in Ontario can deduct more expenses than a regular T2200 employee, and where those extra deduction categories come from.

Tax5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • Like any employee, a commissioned salesperson generally needs a signed T2200 (Declaration of Conditions of Employment) from their employer before claiming any work-related expenses, and…
  • The common thread is that commissioned employees can deduct costs that are directly tied to generating sales — client meals, marketing materials, mileage to see clients — that a salaried…
  • Employment expense deductions for commissioned employees are generally limited to the amount of commission income you earned in the year.

If part or all of your income is commission-based — sales, real estate referrals, insurance, recruiting — you're generally entitled to claim a wider range of employment expenses than an employee earning a flat salary. Commissioned employee deductions cover categories that regular employees can't touch, but the rules also come with their own limits and paperwork.

This article explains what makes commission income different for tax purposes, what you can add to your claim that a salaried employee can't, and where the extra flexibility stops.

The Baseline: What Any Employee Can Claim

Like any employee, a commissioned salesperson generally needs a signed T2200 (Declaration of Conditions of Employment) from their employer before claiming any work-related expenses, and reports the actual claim on a T777 (Statement of Employment Expenses). That baseline covers things like a home workspace, supplies, and a portion of phone or internet costs, depending on what the employer confirms.

Commission income adds a second, broader layer on top of that baseline — but only if your employer certifies on the T2200 that your income included commissions and that your employment contract required you to pay for expenses to earn it.

What Commission Status Adds

Expense CategoryRegular T2200 EmployeeCommissioned Employee
Home workspace costsYes, if required by employerYes
Supplies and phone/internetYes, if required by employerYes
Client entertainment and promotionNot generally deductibleGenerally deductible, if required to earn commissions
Advertising to generate salesNot generally deductibleGenerally deductible
Certain licensing or professional dues tied to earning commission incomeLimitedBroader eligibility
Vehicle expenses for client travelYes, if requiredYes, often more central to the role

The common thread is that commissioned employees can deduct costs that are directly tied to generating sales — client meals, marketing materials, mileage to see clients — that a salaried back-office employee typically cannot, because those costs aren't a condition of a non-commission job.

The Income Cap: You Can't Create an Employment Loss

This is the rule that catches people off guard. Employment expense deductions for commissioned employees are generally limited to the amount of commission income you earned in the year. You cannot use these deductions to push your total employment income into a loss the way certain other deductions might work differently.

If your commission-related expenses exceed your commission income for the year, the excess is typically not deductible against your other income and doesn't carry forward the way some business losses do. Keep this in mind before assuming every dollar you spent chasing a sale is automatically recoverable at tax time.

What You'll Need to Support the Claim

  1. A T2200 that specifically confirms commission income and required expenses — a generic T2200 that only addresses a home office won't support broader claims like client entertainment or advertising.
  2. Receipts and records for every category claimed — client meal receipts, mileage logs, advertising invoices, and anything else tied to earning your commissions.
  3. A clear allocation between personal and business use — a vehicle used for both client visits and personal errands needs a logbook showing the split; a phone used for both work and personal calls needs a reasonable allocation.
  4. Your T4 slip showing the commission income — the CRA will compare your claimed expenses against the commission income actually reported.

Common Mistakes to Avoid

Frequently asked questions

I earn a small base salary plus commissions — do I still qualify for the broader deductions?

Generally yes, as long as your employer's T2200 confirms you earned commission income and that your job required you to incur expenses to earn it. The mix of salary and commission doesn't disqualify you; what matters is whether commission income and the required conditions are both present.

Can I choose between the regular employment expense rules and the commission rules, whichever gives a better result?

Not really — which set of rules applies depends on the facts your employer certifies on the T2200, not on which produces the lower tax bill. If your T2200 supports the commission categories, you generally use those rules for the expenses that qualify under them.

Does the income cap reset every year?

Yes. Each tax year is assessed on its own — a shortfall in expenses one year against a strong commission year, or vice versa, doesn't automatically carry the excess forward the way certain business losses can.

What happens if the CRA reviews my claim and disagrees with my allocation?

The CRA can ask for supporting documentation and may disallow amounts it doesn't consider adequately substantiated or connected to earning your commission income. Good contemporaneous records — logbooks, receipts, and a T2200 that matches your actual job — are your best protection.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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