Independent Contractor vs Employee: CRA Tests and Ontario Tax Risks

The distinction between an employee and an independent contractor has massive tax implications. Employees require CPP matching, EI premiums, income tax withholding, T4 slips, and Ontario employment standards protections. Contractors do not — they receive a T4A and handle their own taxes. The problem is that this classification is not your choice alone; the CRA has its own test.

Why This Classification Matters

If CRA reclassifies your contractors as employees, the consequences fall on the payer (your business), not the worker. You become liable for the employer's share of CPP and EI for the entire period, plus the employee's share that you failed to withhold, plus interest and penalties.

• Employer CPP: 5.95% of each worker's pensionable earnings
• Employer EI: 1.4× the worker's EI premium (2.296% of insurable earnings)
• Penalties for failure to withhold: 10% of amounts not withheld, plus interest
• Director liability: directors can be personally liable for unremitted amounts

The CRA Four-Factor Test

The Supreme Court of Canada established that no single factor determines employment status. The CRA uses a holistic review of four main factors to determine whether a worker is an employee or contractor.

• 1. Control: does the payer control how, when, and where work is done? (employee indicator)
• 2. Ownership of tools: does the worker supply their own tools and equipment? (contractor indicator)
• 3. Chance of profit/risk of loss: can the worker profit more by being efficient? Can they lose money? (contractor indicator)
• 4. Integration: is the worker's work integral to the core business? (employee indicator)

Strong Indicators of an Employee Relationship

These factors push strongly toward employee classification and increase your risk of reclassification if they are present in your contractor relationships.

• You set the worker's hours and require them to work on-site
• The worker cannot hire substitutes or delegate the work
• You provide all tools, equipment, and training
• The worker works exclusively for you over a long period
• You dictate exactly how the work must be performed
• The worker has no business name, invoices, or other clients

Strong Indicators of a Contractor Relationship

These factors support independent contractor status and reduce reclassification risk.

• Worker has their own business registration, GST/HST number, and invoices
• Worker supplies their own tools, software, and workspace
• Worker has multiple clients simultaneously
• Worker can profit more by completing work faster or more efficiently
• Worker bears financial risk if work needs to be redone at their cost
• Worker can hire helpers or subcontract portions of the work

Filing a CRA Ruling Request

If you are unsure about a worker's status, you can request a CPP/EI ruling from the CRA using Form CPT1. The CRA will review the facts and issue a binding ruling on whether the worker is an employee or contractor.

This is the safest way to get certainty — and if the CRA rules in your favour, you are protected from later reassessment on the same facts.

• File Form CPT1 (Request for a Ruling as to the Status of a Worker)
• Ruling is binding on both parties for the period covered
• Processing time: approximately 3–6 months

Key Takeaways

The employee vs contractor question is one of the most common and costly CRA audit issues for Ontario businesses. If you have workers who could be classified as employees, review the relationship against the CRA criteria now — before an audit raises the issue. Written contracts and proper business practices on the worker's side are your best protection.