Employment Income vs. Self-Employment Income in Canada: What Changes at Tax Time

The distinction between employment income and self-employment income matters far more than most Canadians realize when they start freelancing, consulting, or running a side business. Both types of income flow onto your personal tax return, but the rules around deductions, payroll obligations, Canada Pension Plan contributions, and HST registration are completely different. Getting the classification wrong — or missing the planning opportunities that come with it — can be costly.

This article explains the key differences. For your specific situation, consult a qualified accountant.

The Fundamental Split: Employee or Independent Contractor?

Before discussing tax, you need to know which category you are in. The CRA does not simply accept whatever label you or a company puts on the arrangement. The agency looks at the economic reality of the relationship using a multi-factor test that considers:

• Control — does the payer direct how and when you work, or just what result you deliver?
• Tools and equipment — who provides the tools?
• Financial risk — can you lose money on the work? Can you sub-contract?
• Integration — is the work an integral part of the payer's business, or a peripheral service?

A worker who is actually an employee but is misclassified as a contractor faces back-taxes, missed CPP contributions, and lost employment insurance. A worker who is genuinely self-employed and files as an employee misses deductions they are entitled to. The stakes on both sides are real.

Employment Income: How Tax Works

When you are an employee:

• Your employer withholds income tax, CPP contributions (employee share), and Employment Insurance (EI) premiums from each paycheque.
• At year-end you receive a T4 slip showing your gross employment income and all amounts withheld.
• Your deductible expenses as an employee are very limited. The main ones are union dues, certain professional fees, and — with a completed T2200 form signed by your employer — specific employment expenses like home office costs or vehicle expenses for work travel (not commuting). The rules are strict and CRA scrutinizes them.
• You file a T1 General return reporting your T4 income. If your employer over- or under-withheld, you receive a refund or owe a balance.

Self-Employment Income: How Tax Works

When you are self-employed (a sole proprietor or an unincorporated business):

• No one withholds tax for you. You are responsible for setting aside money throughout the year and remitting quarterly tax instalments to CRA once your net tax owing exceeds a threshold (verify the current threshold with CRA). Missing instalments results in interest charges.
• You report your business income and expenses on a T2125 (Statement of Business or Professional Activities) form attached to your T1 return. You are taxed on your net income — revenue minus allowable business expenses.
• The range of deductible expenses is much broader than for employees. Common examples: home office costs (proportional), business portion of vehicle use, professional development, office supplies, business insurance, and accounting fees. Expenses must be incurred to earn business income — personal expenses are not deductible.
• You pay both the employee and employer portions of CPP contributions on your net self-employment income. This is roughly double the CPP contribution of an employee at the same income level. At the same time, a portion of the employer-side CPP you pay is deductible.
• Self-employed individuals do not pay into or collect Employment Insurance through the standard route (though voluntary EI for self-employed is available for maternity/parental and certain other special benefits — verify eligibility with Service Canada).

HST: A Threshold That Catches New Businesses Off Guard

One of the most common surprises for newly self-employed people: you must register for and collect HST (Harmonized Sales Tax) once your worldwide taxable supplies exceed a revenue threshold in a calendar quarter or over the past four quarters. Verify the current threshold with CRA, but it is relatively low — many freelancers cross it within their first year.

Once registered, you charge HST on your invoices, collect it from clients, and remit the net amount to CRA (often less the input tax credits you claim on your business purchases). If you fail to register when required, you may owe HST on past invoices even if you never collected it. Registering voluntarily before you hit the threshold can be beneficial in some situations (you start recovering input tax credits sooner).

The Incorporation Question

Once a self-employed business earns above a certain level, many business owners consider incorporating. A corporation is a separate legal entity that pays a lower small-business corporate tax rate on its first tranche of active business income (verify the current rate with CRA and an accountant). The owner then decides how to extract money from the corporation — salary (which generates RRSP room and CPP contribution history) or dividends (which do not) — and the balance can be left in the corporation and invested at a lower tax cost than if it were personal income.

Incorporation has legal and accounting costs, and the tax benefit is not automatic — it depends on how much you earn, how much you need to live on, and your long-term goals. A lawyer can handle the incorporation; an accountant should model whether it makes sense for your numbers.

Frequently asked questions