For 2025, only the detailed method is available — the flat rate method was eliminated after 2022. You need a signed T2200 from your employer, then calculate your workspace percentage and claim your proportionate share of eligible home expenses on Form T777 (line 22900 of your T1).
The Flat Rate Method Is Gone — Only the Detailed Method Remains
During the COVID-19 pandemic, the CRA introduced a simplified flat rate method that allowed employees to claim $2 per day worked from home (up to $500 for 2021 and 2022) without a T2200 or receipts. That temporary measure ended after the 2022 tax year.
For the 2025 tax year, there is only one way to claim home office expenses as an employee: the detailed method. This means you must:
- Have your employer sign Form T2200 (Declaration of Conditions of Employment)
- Track and keep receipts for all eligible home expenses
- Calculate the percentage of your home used for work
- Complete Form T777 (Statement of Employment Expenses)
- Enter the result on line 22900 of your T1 return
While the detailed method involves more paperwork, it can result in a significantly larger deduction than the old flat rate — especially if you pay high rent or have substantial utilities.
The T2200 Form: Your Starting Point
The T2200 (Declaration of Conditions of Employment) is a form your employer must complete and sign. Without it, you cannot use the detailed method. The T2200 certifies that you were required to work from home as a condition of your employment, that you were not reimbursed for those expenses, and that you worked from home more than 50% of the time for a period of at least four consecutive weeks.
Your employer must confirm you were required to work from home — not that you simply preferred to. If your employer offered an office but you chose to work from home, you generally cannot claim this deduction. Ask your HR department or manager to complete the T2200 before you file.
You do not submit the T2200 with your tax return, but you must keep it in your records in case the CRA asks for it. The CRA has been known to request T2200 forms during reviews and audits of employment expense claims.
How to Calculate Your Workspace Percentage
The most common approach is the area method: divide the area of your dedicated work space by the total finished area of your home.
| Home Size | Workspace Size | Workspace % |
|---|---|---|
| 800 sq ft (condo) | 80 sq ft | 10% |
| 1,200 sq ft | 120 sq ft | 10% |
| 1,500 sq ft | 150 sq ft | 10% |
| 2,000 sq ft | 200 sq ft | 10% |
The CRA generally requires that the space be used exclusively and regularly for work, or that it be where you principally meet clients or customers. A spare bedroom used only as an office qualifies. The kitchen table where you also eat dinner is more difficult to defend, though the CRA does acknowledge that some mixed-use spaces are unavoidable — document your use carefully.
If you work from home only part of the year (e.g., you started a hybrid schedule mid-year), you must also pro-rate your expenses for the months or weeks you actually worked from home.
Eligible Expenses for Regular Employees
Regular (non-commission) employees can deduct a workspace percentage of the following expenses:
- Electricity — your monthly hydro bills
- Heat — gas, oil, or other heating fuel
- Water — included in some utility bills
- Internet access fees — the portion attributable to your home (note: if you also have a work-issued device with a data plan, only claim your home internet)
- Rent — if you rent your home, you can deduct your workspace percentage of the rent
- Home maintenance and minor repairs — costs that relate to the whole home, pro-rated; repairs specific to the workspace can be fully deducted
Example Calculation for a Regular Employee
Suppose your home is 1,500 sq ft and your office is 150 sq ft (10%). Your annual eligible expenses are:
- Rent: $24,000 × 10% = $2,400
- Electricity: $1,800 × 10% = $180
- Heat: $1,200 × 10% = $120
- Internet: $900 × 10% = $90 (or a reasonable portion)
- Maintenance: $600 × 10% = $60
- Total deduction: $2,850
At a marginal tax rate of 33%, that $2,850 deduction saves roughly $940 in taxes.
What Regular Employees Cannot Deduct
Even under the detailed method, regular employees cannot deduct:
- Mortgage principal — paying down your mortgage is not a deductible expense for employees
- Mortgage interest — only commission employees may deduct a portion
- Property taxes — again, only available to commission employees
- Capital expenses — furniture, computer equipment, home renovations
- Home insurance — not deductible for regular employees
- Cable TV or streaming services
- Cell phone bills — unless the phone is exclusively for work (rare for home office claims)
Commission Employees: Broader Deductions Available
Commission employees (salespeople who earn a significant portion of their income from commissions) have access to additional deductions. If the T2200 confirms you are a commission employee, you can also deduct your workspace percentage of:
- Mortgage interest
- Property taxes
- Home insurance
However, commission employees cannot deduct home office expenses that exceed their commission income. If your commission income is $10,000 and your home office expenses total $12,000, you can only deduct $10,000 this year. The excess cannot be carried forward.
Self-Employed Workers: Different Rules Apply
If you are self-employed (filing business income on a T2125), the rules are different and generally more generous. Self-employed individuals can deduct a business-use percentage of all home expenses including mortgage interest, property taxes, and insurance — not just utilities. They are not required to get a T2200. However, they must be careful: the CRA scrutinizes home office claims by the self-employed heavily, and the workspace must be the principal place of business or used exclusively for business and for meeting clients.
Form T777: Putting It All Together
Once you have your T2200 and your expense totals, complete Form T777 — Statement of Employment Expenses. Part 7 of T777 covers home office expenses specifically. The form walks you through:
- Listing each eligible expense category and the annual total
- Entering your workspace percentage
- Calculating the deductible amount for each category
- Applying any income limit (for commission employees)
- Arriving at a final deduction amount
The result from T777 flows to line 22900 of your T1 General return. Most tax software (TurboTax, Wealthsimple Tax, UFile, H&R Block) will walk you through Form T777 automatically.
Common CRA Audit Triggers for Work-From-Home Claims
The CRA does review home office claims, particularly when the deduction seems large relative to employment income. Common flags include:
- Claiming more than 20–25% of your home as workspace (hard to defend without a dedicated, large office)
- Deducting mortgage interest or property taxes as a regular (non-commission) employee
- No T2200 on file, or a T2200 that contradicts your claim
- Claiming 100% of internet costs when internet is clearly used personally
- Claiming capital expenditures (furniture, renovations) as operating expenses
- Repeated large employment expense claims with no change in job duties
The CRA can review any return within six years of filing. Keep all utility bills, rent receipts, internet statements, and your signed T2200 form for at least six years after the tax year in question.
Hybrid Workers and Part-Year Claims
Many Canadians now follow a hybrid schedule — working from home two or three days per week and commuting the other days. The CRA accepts hybrid arrangements, but you must accurately reflect the portion of time worked from home. Some taxpayers use a time-based pro-ration in addition to the area calculation (e.g., 10% of home × 60% of time worked from home = 6% effective rate). Document your schedule carefully; calendar records, email records, or employer attestations all help substantiate your claim.
Ready to estimate your tax savings?
Use the Tax Friend calculator to see how your home office deduction reduces your overall federal and provincial tax bill for 2025.
Frequently Asked Questions
Can I still use the flat rate method for 2025?
No. The CRA’s temporary flat rate method was only available for 2020, 2021, and 2022. For the 2025 tax year, only the detailed method is available. You must obtain a signed T2200 from your employer and track your actual expenses.
Does my employer have to sign the T2200 even if I chose to work from home?
Yes. Your employer must certify on the T2200 that you were required to work from home as a condition of employment. If working from home was entirely your own choice and not required by your employer, you generally cannot claim the deduction.
Can I deduct my mortgage payments if I work from home?
No. Regular employees cannot deduct mortgage principal or property taxes. Only commission employees may deduct a portion of property taxes and mortgage interest. Regular employees can deduct a proportionate share of heat, electricity, water, internet, and maintenance costs.
What percentage of my home can I claim as my workspace?
The workspace percentage is calculated by dividing the area of your dedicated work space by the total area of your home. For example, a 150 sq ft office in a 1,500 sq ft home equals 10%. The space must be used exclusively and regularly for work, or be the place where you principally meet clients.
What form do I use to claim home office expenses as an employee?
Employees use Form T777 (Statement of Employment Expenses) to calculate and claim their home office and other employment expenses. The deduction flows to line 22900 of your T1 return. Keep all receipts in case the CRA requests them.