Home Office Deduction in Canada

CRA offers a simplified option: deduct $5 per square foot of workspace, up to 300 square feet ($1,500 maximum). The space must be your principal place of business or used exclusively to earn income.

No receipts required for the simplified method. You just calculate your square footage and enter the amount on your return. It’s fast and audit-friendly, but may leave money on the table if your actual costs exceed $5/sqft.

For 2025, this is the same rate that’s been in place for several years. It works well for employees with modest home office setups or self-employed individuals who prefer simplicity.

For the detailed method, your workspace must be used exclusively for earning income — not occasionally as a guest room, home gym, or kids’ play area. This is the most common reason CRA audits deny home office claims.

We’ve helped BC clients restructure their home layout to satisfy the exclusivity rule. One client converted a spare bedroom into a dedicated office, removed the bed, and used a room divider. CRA accepted the claim in full.

If exclusivity isn’t practical (e.g., you work at the kitchen table), you can still use the simplified method or claim a partial deduction — but the risk of disallowance is higher.

CRA scrutinizes home office deductions closely. Red flags include: claiming 50%+ of home expenses without a clear floor plan, claiming mortgage principal, deducting items that include personal use (like a phone bill), or filing T2200 without employer confirmation.

Reasonable allocation examples: if you use your home office for client meetings, you can argue a higher business-use percentage for expenses like cleaning or maintenance. But if you work 30 hours a week in a 200 sqft office, claiming 50% of total home expenses will raise questions.

One BC real estate agent we advised was claiming 70% of her condo expenses. After review, we adjusted it to 18% based on actual room count and exclusive use — CRA accepted it without issue.