Filing T4s for Your Family Business: Common Pitfalls and Best Practices

Why T4 Compliance Matters for Your Auto Shop

T4s report employee income, tax deductions, and CPP contributions to CRA. Errors invite audits. Late filing triggers penalties. Filing T4s for family members demonstrates to CRA that wages are legitimate business expenses, not hidden income splitting schemes.

The T4 Basics: What Information You Must Include

T4 forms report gross income, federal and provincial tax deducted, CPP contributions, and EI premiums. Each employee needs a T4 if they earned over $500. Your payroll software or accountant typically generates these automatically. For a related tax-planning angle, see Paying Your Spouse or Children: CRA Rules for Reasonable Family Wages.

Common T4 Filing Mistakes That Trigger Audits

Incorrect Social Insurance Numbers, mismatched amounts, missing T4s for family members, and late filing are common errors. Using outdated tax year numbers or wrong employee information also causes problems. Double-check all details before submission.

Payroll Software That Simplifies T4 Filing

Accounting software like Sage, QuickBooks, and ADP automate T4 generation and CRA submission. These tools reduce manual errors and ensure timely filing. For most auto shops, software is cheaper than hiring a payroll service.

T4 Adjustments and Amended Returns

If you discover T4 errors after filing, file an amended T4 immediately. CRA will correct the record. Delaying amendments increases audit risk. Communicate corrected information to employees and CRA promptly.

Record Keeping: What You Must Retain

Keep payroll records for at least 7 years. This includes timesheets, pay stubs, T4 copies, tax deduction proofs, and CRA acknowledgments. Organized records protect you if audited.

T4 Filing Checklist for Auto Shop Owners

• Verify all employee Social Insurance Numbers
• Confirm gross income amounts match payroll records
• Include all employees earning over $500
• Report federal and provincial tax deductions
• Include CPP and EI contributions
• File T4s with CRA by February 28
• Provide copies to employees by February 28
• Keep copies for your records

Special Considerations for Family Employees

Filing T4s for family members signals to CRA that you treat them like any other employee. This demonstrates wage reasonableness. Failing to file T4s for family wages raises red flags and invites scrutiny. For a broader financial planning perspective, review Building RRSP Room Through Salary: Planning Your Retirement Early For Auto Repair Shop Owners.

Frequently Asked Questions