Mobile Phone & Telecommunications — Canada Tax Rules

Claim the business-use proportion of your mobile phone plan, data, and handset against your Canadian income tax.

Claimable: Partially claimable · Tax authority: CRA (Canada Revenue Agency)

CRA (Canada Revenue Agency) Rules

• Claim the business-use proportion of your monthly phone plan — calls, texts, and data.
• For a dual-use phone, estimate your business-use percentage by reviewing a representative month of call records.
• A dedicated business phone used solely for work can be claimed in full (100%).
• The handset cost, if over C$500, is a capital asset claimed via CCA Class 8 (20%/year) at the business-use percentage.
• Handsets costing C$500 or less may qualify as Class 12 tools (100% in year of purchase) at the business-use proportion.
• Internet and broadband used for business from home is a separate deduction — claim under home office or as a direct office expense.

Limits

No fixed cap — claim must reflect genuine business-use proportion. CRA may challenge claims where personal use appears high. Typical self-employed claims range from 50%–80% of annual phone costs.

Worked Example

Sofia uses her phone 70% for business. Her annual plan costs C$1,440 and her handset cost C$800 (CCA Class 8). Phone plan claim: C$1,440 × 70% = C$1,008. Handset CCA Year 1 (half-year rule): C$800 × 70% × 20% × 50% = C$56. Total first-year deduction: C$1,064.

Record Keeping

• Keep monthly phone bills for the full calendar year
• Document your business-use percentage with supporting reasoning (e.g. review of one to two months of call logs)
• Keep the handset purchase receipt and note the date of purchase
• Maintain a CCA schedule for the handset if its cost exceeds C$500
• If you use a dedicated business SIM, keep those bills separately as evidence of 100% business use

Frequently Asked Questions

Can I claim 100% of my phone as a self-employed Canadian?

Only if the phone is used exclusively for business with no personal use. CRA expects a reasonable allocation — most self-employed people use a 50%–80% business-use estimate. A dedicated second phone used purely for business is 100% deductible with clean evidence.

How do I determine my business-use percentage for phone costs?

Review one or two months of your phone bill or call records. Calculate the proportion of calls and data usage that were for business purposes (client calls, business apps, work emails) vs. personal use. Apply that percentage consistently to the full year's costs. Document your methodology in writing in case CRA asks.

Is my home internet separate from my phone claim?

Yes — home internet is typically claimed as a home office expense (proportioned to your workspace area) or as a separate office expense if you can show it is primarily for business. Keep internet bills separate from your phone plan bills.