Self-Employment Tax in Canada: CPP, Income Tax & Instalments

Self-employment in Canada comes with tax obligations that differ significantly from traditional employment. As a sole proprietor, freelancer, or independent contractor, you are responsible for paying both the employee and employer portions of CPP, managing your own tax remittances, and potentially making quarterly instalment payments.

Income Tax for the Self-Employed

Self-employment income is reported on your T1 personal tax return, specifically on Form T2125 (Statement of Business or Professional Activities). Your net self-employment income — gross revenue minus allowable business expenses — is added to your other income and taxed at the same progressive federal and provincial rates as employment income.

Common deductible business expenses include:

• Home office costs (proportional to space used)
• Vehicle expenses for business travel
• Professional development and training
• Software, subscriptions, and supplies
• Accounting and legal fees
• Business insurance

The key advantage of self-employment from a tax perspective is the ability to deduct legitimate business expenses before calculating taxable income. An employee earning $100,000 cannot deduct their laptop or internet bill, but a self-employed person can.

Double CPP: The Biggest Surprise

As an employee, you pay the employee portion of CPP (5.95% in 2025) and your employer matches it. When you are self-employed, you pay both portions — a combined rate of 11.90% on net self-employment earnings between the basic exemption ($3,500) and the YMPE ($71,300).

For 2025, the maximum CPP contribution for a self-employed person is approximately $8,068 — roughly double what an employee pays.

The Half-CPP Deduction

To offset the double burden, the CRA allows self-employed individuals to deduct the employer-equivalent half of their CPP contribution from taxable income. This deduction is claimed on line 22200 of your tax return. It does not reduce your CPP payment, but it does reduce your income tax.

For example, if you pay $8,068 in total CPP, you can deduct approximately $4,034 from your taxable income, saving you tax at your marginal rate.

CPP2 for Self-Employed

The enhanced CPP2 also applies to self-employed earnings above the YMPE ($71,300) up to the second ceiling ($81,200). The self-employed CPP2 rate is 8.00% (double the employee rate of 4%). Half of the CPP2 contribution is also deductible.

Employment Insurance: Optional

Unlike employees, self-employed Canadians are not required to pay EI premiums. However, you can opt in to the EI program to access special benefits such as maternity, parental, sickness, and compassionate care benefits. If you opt in, you pay the employee rate (1.64% in 2025) but do not pay the employer portion.

Note that opting in is a permanent decision — once you have made a claim, you cannot opt out.

Quarterly Tax Instalments

If your net tax owing exceeds $3,000 in the current year and in either of the two prior years, the CRA requires you to make quarterly instalment payments. The instalment due dates are:

• March 15
• June 15
• September 15
• December 15

The CRA offers three methods to calculate instalments:

1. No-calculation option: Pay the amounts on your instalment reminder from the CRA
2. Prior-year method: Base payments on last year’s tax owing
3. Current-year method: Estimate this year’s tax and divide by four

If you underpay or miss instalments, the CRA charges instalment interest at the prescribed rate. However, there is no penalty for underpayment as long as you file your return and pay the balance by April 30.

Filing Deadlines

Self-employed Canadians and their spouses have until June 15 to file their tax return (rather than April 30). However, any balance owing is still due by April 30, so you may owe interest on late payments even though the filing deadline is extended.

GST/HST Registration

If your annual revenue exceeds $30,000, you must register for a GST/HST account and collect sales tax from your clients. You remit the collected tax to the CRA, minus any input tax credits (ITCs) for GST/HST you paid on business expenses.

The small supplier exemption means that if you earn less than $30,000 annually, registration is optional — though it may be beneficial to register voluntarily so you can claim ITCs.

Bottom Line

Self-employment tax in Canada revolves around three key areas: income tax on net business earnings, double CPP contributions (with the half-CPP deduction), and quarterly instalments if your tax bill is large enough. Use our Self-Employment Tax Calculator to estimate your total obligations including income tax, CPP, and instalment amounts.