If you work from a space that your spouse, children, or other family members also use, you can still claim a home office deduction, but the CRA expects you to calculate it fairly based on the portion you use exclusively for work. You cannot claim 100% of a room's expenses if your family uses part of it for personal activities. The key is documenting how much of the space is dedicated solely to your work and apportioning utility costs and other shared expenses proportionally. The CRA has strict rules about what qualifies as a deductible home office. The space must be used primarily and regularly for earning income. When family members use the same room, this becomes more complicated. Here's what the CRA looks at: - Dedicated workspace: Is there a specific desk or corner you use only for work? - Active use by others: Do your spouse or kids actually use that area for homework, craft projects, or leisure? - Time-sharing the space: If you use it 8 hours for work and your teen uses it 4 hours for studying, can you claim 67% of expenses? The honest answer is that the CRA wants to see a clear separation.
Yes, but only for the portion of the space and expenses that relate to your work use. You must calculate a reasonable percentage based on square footage, time-use, or a combination of both, and document how you arrived at that number.
It depends on your actual use. Measure the square footage you dedicate to work, or track the hours you use the space versus family members. Be honest and consistent with your calculation, as the CRA compares claims to the room's total size and household layout.
No. You only split shared expenses like utilities, internet, and property taxes based on your usage percentage. Office equipment, furniture, and supplies you buy for your work are fully deductible, even if purchased in a shared room.
The simplified method (currently $2 per square foot, up to $600 annually) can work well for shared spaces because you claim only your dedicated desk area, avoiding the need to justify shared expense percentages.
Keep photos of your workspace and the room layout, measurements, receipts for your equipment and supplies, utility bills, and a brief written note explaining how you calculated your percentage. This documentation helps if the CRA has questions.