ExampleRevenue $120,000 · Expenses $20,000 · Ontario · Double CPP comparison
Estimates based on 2026 CRA rates. Does not include CPP2, provincial health premiums, or GST/HST obligations. Register for GST/HST once revenue exceeds $30,000 in any 12-month period. Consult a CPA. Not financial advice. Source: canada.ca.
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Self-employed Canadians pay both the employee and employer portions of CPP - roughly double what a salaried worker pays - plus face quarterly tax instalments once net tax owing exceeds $3,000. This calculator shows the true cost of self-employment income vs an equivalent salary and projects how much to hold back for taxes, CPP, and HST.
Self-employment income is subject to federal + provincial income tax at your bracket, plus 11.9% combined CPP (5.95% × 2) on earnings between $3,500 and $71,300, plus 8.0% CPP2 (4.0% × 2) on earnings between $71,300 and $81,200 in 2026. EI is not automatic - self-employed Canadians can opt in voluntarily for $1,049.12/year for maternity/sickness benefits.
Maximum 2026 CPP + CPP2 for a self-employed earner at $81,200+ is approximately $8,872 - vs $4,436 for a T4 employee at the same income. The additional cost is deductible (employer portion) on your T1, but you still need to budget the cash flow.
Employees pay half of CPP premiums and employers pay the other half. Self-employed individuals pay both the employee and employer portions-roughly double-which in 2026 means a maximum combined CPP contribution of approximately $8,068 (plus CPP2). This is a significant cost that many new self-employed Canadians underestimate.
Common deductions include a home office (proportional to space used for business), vehicle expenses, equipment, software subscriptions, professional development, insurance, and a portion of phone and internet. The expense must be incurred to earn business income. Keep receipts and consult a CPA for your specific situation.
CRA requires quarterly instalments if your net tax owing exceeds $3,000 in the current year and either of the two prior years. Instalments are due in March, June, September, and December. The tax reserve calculator helps you set aside the right percentage throughout the year to avoid surprises.
Long-form explainers that pair with this calculator.