Cell phones are essential work tools for most Canadians, and CRA allows you to deduct the work-use portion of your cell phone costs if you meet the conditions. This page covers who can claim, how to work out your work-use percentage, what you can deduct (plan, hardware and home internet) and what records CRA asks for. It is one of the work-related claims in our guide to Canadian tax deductions and credits.
Who can claim cell phone expenses?
Employees
You can claim the work-use portion of your cell phone bill if:
- You are required to use your own phone as a condition of employment (not just convenient)
- Your employer has signed a T2200 confirming this
- You were not reimbursed by your employer for the cost
Claim the deduction on Form T777 → Line 22900 (Other employment expenses) of your T1.
Self-employed individuals
You can claim the business-use portion of your cell phone bill as a business expense on Form T2125 (Statement of Business or Professional Activities), and no employer form is required, whereas employees need a signed T2200. You simply need to track and document your usage split; the T2125 guide shows where the expense goes on the form.
How to calculate your business-use percentage
CRA does not prescribe an exact methodology, but expects a reasonable, defensible estimate based on actual usage. Common approaches:
Method 1: Time-based estimate
Track how many hours per day you use your phone for work vs. personal purposes over a representative week. Calculate the ratio.
Example: 6 work hours out of 10 daily usage hours = 60% business use
Method 2: Call/data analysis
Review your phone bill for a few months. Estimate the percentage of calls made to business contacts, business apps, email, etc.
Method 3: Separate phones
If you maintain a dedicated business phone and a personal phone, you can claim 100% of the business phone plan. This is the cleanest approach and eliminates estimation risk.
What you can deduct
| Item | Employee | Self-Employed |
|---|---|---|
| Monthly plan cost | ✅ Business % only | ✅ Business % only |
| Data overage charges (business use) | ✅ Business % only | ✅ Business % only |
| Phone hardware (new phone) | ❌ Generally not for employees | ✅ Via CCA (Class 8, 20%) |
| Accessories (headset, case for business use) | ✅ Possibly | ✅ Yes |
| Long distance calls for work | ✅ | ✅ |
Calculation example
Self-employed, 65% business use, monthly plan $80:
| Item | Annual Cost | Business Use | Deductible |
|---|---|---|---|
| Cell phone plan | $960 | 65% | $624 |
| New phone ($900 hardware) via CCA | Year 1 CCA: $90 | 65% | $59 |
| Total | $683 |
Documentation to keep
- Copies of monthly phone bills, showing total charges and your payment
- Your business-use calculation: a brief written note or spreadsheet showing how you arrived at your percentage
- T2200 (if employee), which must be on file before filing
- Retain records for 6 years from the filing date
Common mistakes
- Claiming 100% on a personal phone: CRA flags this regularly; almost no personal phone is 100% business
- Claiming the phone hardware as an immediate deduction, when it should generally be capitalized under CCA
- Employees claiming without a T2200: the claim will be denied on audit
- Double-dipping when employer partially reimburses: only claim the unreimbursed portion
Home internet: can you also deduct it?
Yes, but the same work-use percentage logic applies. Employees with a T2200 can deduct the work-use portion of home internet (not cell phone) on Line 22900. Self-employed individuals claim it on T2125. Home internet is usually claimed along with the rest of your workspace costs: see the home office deduction for employees or, if you are self-employed, business-use-of-home expenses.
| Expense | Employee (T2200 required) | Self-employed (T2125) |
|---|---|---|
| Cell phone plan | Work % deductible | Work % deductible |
| Home internet | Work % deductible on Line 22900 | Work % deductible on T2125 |
| Cable TV bundle | No | No |
| Streaming services (Netflix, etc.) | Only if demonstrably required for work | Only if demonstrably required |
If your internet provider bundles phone and internet into one bill, separate the amounts as best you can. Most providers show the per-service breakdown.
Phone hardware: which CCA class?
Cell phones fall under Class 8 (20% declining balance CCA), the catch-all category that also covers fax machines and other electronic communications equipment. Class 10 (30% declining balance) is for general-purpose computer hardware and systems software, plus motor vehicles, and does not apply to cell phones.
| CCA class | Rate | Notes |
|---|---|---|
| Class 8 (other depreciable property) | 20% declining balance | Applies to cell phones and other electronic communications equipment |
| Class 10 (computers and data-processing equipment) | 30% declining balance | Computer hardware/software and motor vehicles, not cell phones |
The half-year rule applies in the year of acquisition, so you can only claim half the normal CCA in the first year. If a phone costs more than $1,000, you can elect to place it in a separate Class 8 pool so it depreciates on its own five-year schedule rather than being pooled with other Class 8 assets.
How CRA audits cell phone claims
If CRA audits your cell phone deduction, they typically ask for:
- Phone bills for the claim period (12 months)
- Your work-use calculation: a written explanation of how you arrived at the percentage
- T2200 if you are an employee
- Confirmation you were not reimbursed by your employer
- For self-employed: evidence of business use (client contacts, work-related calls list, business email/app usage)
CRA does not accept claims based on “estimation” without any supporting methodology. Write down how you calculated your percentage at the time of filing and keep it with your tax records.
Other work expenses claimed the same way
Employees who drive their own car for work claim it on the same T777 and T2200 under the rules for car expenses as an employee. Apps and software used for work follow the rules on which subscriptions you can deduct, and the self-employed can find the full expense list in the guide to self-employed tax deductions.