Self-Employment Tax Obligations in Canada

Working for yourself in Canada comes with real tax advantages — deductible business expenses, flexibility over your income — but also obligations that employed workers never face. You are responsible for your own CPP contributions, possibly GST/HST remittances, and quarterly tax instalments. Understanding these obligations from the start prevents painful surprises at tax time.

Who Is Considered Self-Employed?

You are self-employed (an independent contractor or sole proprietor) if you:

• Work for clients rather than a single employer
• Control how and when your work is done
• Bear the risk of profit and loss
• Provide your own tools and equipment
• Can subcontract the work

The CRA and Employment Insurance Act distinguish employees from self-employed workers using a multi-factor test. Misclassification as self-employed by a payer does not change your actual status for tax purposes.

1. CPP: You Pay Both Halves

Employees have one half of CPP deducted by their employer, and the employer matches it. Self-employed individuals have no employer — so they pay both the employee and employer portions, totalling:

Contribution	2025 Rate	Maximum (on net earnings above $3,500, up to $71,300)
CPP1 (combined)	11.90%	$8,068.20
CPP2 (combined, earnings $71,300–$81,900)	8.00%	$792.00
Total maximum CPP		$8,860.20

Example: Freelance graphic designer with $60,000 net self-employment income.

CPP1 = ($60,000 − $3,500) × 11.90% = $56,500 × 11.90% = $6,723.50

No CPP2 (income below $71,300).

The CPP contribution is calculated on Schedule 8 of your T1 and included in your total tax owing.

The deductible half: You can deduct the “employer” half of your CPP contribution as a deduction from income (Line 22200). This partially offsets the double contribution. The “employee” half remains a non-refundable tax credit (Line 31000).

For our example: deductible half = $6,723.50 ÷ 2 = $3,361.75 income deduction.

2. EI: Optional for Self-Employed

Self-employed Canadians are not automatically covered by Employment Insurance. However, you can opt in to the EI program voluntarily to access special benefits:

• Maternity benefits (15 weeks)
• Parental benefits (up to 40 or 69 weeks)
• Sickness benefits (up to 26 weeks)
• Compassionate care benefits (up to 26 weeks)
• Family caregiver benefits

Once you opt in, you pay the employee EI premium rate on your self-employment earnings (1.64% in 2025, up to the $65,700 maximum insurable earnings). You must wait 12 months after opting in before accessing benefits, and you remain enrolled for a minimum of one year.

3. GST/HST Registration

Once your total taxable revenues exceed $30,000 in any single calendar quarter or four consecutive quarters, you must register for a GST/HST account. Your revenues include all self-employment income from taxable supplies — not exempt supplies like residential rent.

Even below $30,000, voluntary registration can be beneficial if you have significant business inputs. You recover GST/HST paid on business purchases (Input Tax Credits) even while keeping your revenues below the threshold.

Example: Consultant in Ontario, $50,000 annual revenue. Must register for HST.

HST collected on $50,000 revenue: $50,000 × 13% = $6,500 HST paid on $8,000 of business expenses: $8,000 × 13% = $1,040 (ITC) Net HST remittable: $6,500 − $1,040 = $5,460

Note: Your $50,000 fee is your income; HST is collected on top of that and remitted to the CRA — it is not your revenue.

4. Deductible Business Expenses

As a sole proprietor, you can deduct reasonable expenses incurred to earn business income. Report on Form T2125, Statement of Business or Professional Activities.

Common deductible expenses include:

Expense	Notes
Home office	Proportionate share of rent/mortgage interest, utilities, internet, property tax
Vehicle	Business-use proportion of gas, insurance, repairs, CCA (keep a mileage log)
Professional fees	Accountant, lawyer
Software and subscriptions	Business-use tools
Advertising and marketing	Website, ads
Business insurance	Errors and omissions, liability
Office supplies	Paper, printer cartridges, etc.
Meals and entertainment	50% deductible for business meals
Professional development	Courses, conferences directly related to your work
Capital equipment	Deducted over time via CCA (computers: Class 10.1 / 55%; office equipment: Class 8 / 20%)

Personal expenses are never deductible, even if incurred by a self-employed person. Mixed-use items (like a home or vehicle) require a reasonable allocation.

5. Home Office Deduction

If you work from home, you can deduct a proportionate share of home costs based on the workspace area as a percentage of total home area (or total rooms).

Example: 200 sq ft office in a 1,000 sq ft home = 20% business use.

Deductible home costs:

• Rent: $2,000/month × 12 × 20% = $4,800
• Internet: $100/month × 12 × 20% = $240
• Heat and electricity: $200/month × 12 × 20% = $480

Total home office deduction: $5,520

Restriction: Home office expenses cannot create or increase a business loss. Unused amounts carry forward to the next year.

6. Tax Instalments

Employees have income tax withheld from every paycheque. Self-employed people receive payments gross (no withholding) and must pay tax in instalments to avoid a large lump sum owing — and potential interest charges — at filing time.

The CRA requires quarterly instalments if your net tax owing exceeds $3,000 ($1,800 in Quebec) in the current year AND in either of the two preceding years.

Instalment due dates:

Quarter	Due Date
Q1	March 15
Q2	June 15
Q3	September 15
Q4	December 15

The CRA sends instalment reminders (letters T7B) showing amounts based on your prior-year tax owing. You can also calculate based on the current-year method (pay based on what you estimate you owe this year).

If you miss instalments or underpay, the CRA charges instalment interest (currently the prescribed rate plus 2%) from each due date. Late filing may also trigger a 5% penalty on unpaid tax.

The filing deadline for self-employed individuals (and their spouses) is June 15 each year, rather than April 30. However, any balance owing is still due by April 30 to avoid interest.

7. Keeping Records

The CRA requires you to keep business records for six years from the end of the tax year to which they relate. This includes:

• Invoices issued and received
• Bank statements and credit card statements
• Mileage log (for vehicle expenses)
• Receipts for all claimed deductions
• GST/HST returns and supporting documentation

Key Takeaways

• Self-employed Canadians pay both CPP halves: 11.90% combined on net earnings between $3,500 and $71,300 in 2025, up to $8,068.20.
• The employer half of CPP is deductible from income; the employee half is a non-refundable credit.
• EI coverage is optional for self-employed; opt-in covers maternity, parental, and sickness benefits.
• Register for GST/HST once taxable revenues exceed $30,000 in a quarter or four consecutive quarters.
• Business expenses are deductible on Form T2125, including a proportionate home office and vehicle.
• Quarterly tax instalments are required when net tax owing exceeds $3,000 in the current and a prior year.
• Self-employed filing deadline is June 15, but tax owing is due April 30 to avoid interest.