Is a phone bill tax deductible?
Usually yes — for the business-use share. Recurring mobile, landline, and VoIP service can generally be deductible when used in a self-employed business. Mixed personal/business service requires a reasonable allocation, and the first landline into a home has a special rule.
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On this page: Short answer · Who this applies to · Phone service types · When it's deductible · When it's not deductible · Family plan allocation · Estimating business use · Schedule C · Example · Records · IRS sources · Related · FAQ
Short answer
Usually yes. Deduct the business-use share of recurring phone service that is ordinary and necessary for your business. A genuinely business-only line can support a full business deduction.
This page is about service costs — mobile plans, landlines, VoIP, and family-plan allocation. For the phone device itself, see the cell phone deduction guide.
FreshBooks — Organize recurring phone expenses
Keep communication costs categorized and retain your business-use calculation with the bills that support the deduction.
Who this typically applies to
- Freelancers and self-employed people using phone service for clients, scheduling, sales, or operations
- Small businesses paying for dedicated mobile, landline, VoIP, or multi-line service
- Gig workers and contractors using a personal line partly for paid work
W-2 employees: most employees cannot deduct unreimbursed phone costs on a federal return. Limited Form 2106 categories remain, including Armed Forces reservists, qualified performing artists, fee-basis state/local officials, and employees with impairment-related work expenses.
Mobile, landline, and VoIP: How the service rules differ
| Phone service | General business treatment |
|---|---|
| Business-only mobile line | Potentially 100% if there is no personal use |
| Mixed-use mobile line | Deduct only a reasonable business-use share |
| First landline into your home | Base local service charge is personal and not deductible |
| Business calls on first home landline | Additional business long-distance or similar business charges can be deductible |
| Second landline used for business | Business-use share is deductible; potentially 100% if business-only |
| VoIP / cloud phone service | Business-use service cost is generally deductible; allocate mixed use |
| Family mobile plan | Identify the cost attributable to your line, then apply your business-use share |
When a phone bill is tax deductible
- The service is used in an active trade or business
- The cost is ordinary and necessary for the work you do
- You exclude personal service/use from the deduction
- You keep the bills and a reasonable explanation of any mixed-use allocation
When a phone bill is not deductible
- The service is entirely personal
- You claim the personal portion of a mixed-use line or family plan
- An employer or client reimbursed the cost and you are trying to deduct the same economic expense again
- You claim 100% business use for a line that has meaningful personal use
- You claim the base local service charge for the first landline into your home
How to deduct a phone line on a family plan
Do not deduct a share of the entire family bill just because one line is used for business. First identify the cost reasonably attributable to your line, then apply your business-use percentage to that amount.
Better allocation order
- Use the carrier's stated line charge when the bill identifies it.
- If the plan has shared/base charges, allocate those reasonably among the lines that benefit.
- Apply your business-use percentage only to the amount attributable to your line.
Simply dividing the total bill by the number of lines can be a rough estimate, but it can be inaccurate when device payments, add-ons, taxes, or line charges differ.
How to estimate the business-use share of a phone bill
There is no fixed IRS percentage. Use a reasonable method based on your actual facts.
- Representative call/message review: identify business vs personal activity for a sample period
- Work-use review: consider business calling, messaging, navigation, and other service-dependent work
- Dedicated line: a line with no personal use can support a much stronger case for 100% business use
Keep a short note showing the sample period and how the percentage was calculated. An unsupported flat 40%, 50%, or 60% is not an IRS safe harbor.
Where does a phone bill deduction go on Schedule C?
The latest finalized Schedule C instructions put business telephone costs under Line 25 — Utilities. Enter only the deductible business amount.
The first-home-landline rule is explicit: the base rate (including taxes) for the first line into your residence is personal and nondeductible, but additional business costs and a second business line can be deducted.
Business telephone expenses are separate from the home-office utility calculation. Publication 587 specifically says not to include deductible business telephone charges as a cost of using the home. Final 2026 Schedule C instructions are not yet available as of August 18, 2026, so confirm final line numbering when filing.
TurboTax — Report business phone-service costs
Use the business-expense section to report the deductible business share of telephone service and keep the first-home-landline rule separate.
Example: Family-plan phone bill deduction
- Total family plan: $180/month
- Your identified line/service share: $55/month
- Supported business use of your line: 60%
- Monthly deductible amount: $55 × 60% = $33
- Annual deductible phone-service amount: $33 × 12 = $396
The remaining family-plan cost is not your business deduction. If your carrier bills different line charges or device payments, use the actual bill details rather than dividing the plan equally.
What records to keep
- Monthly phone bills and proof of payment
- Your business-use allocation method
- For family plans, the bill or calculation showing the cost attributable to your line
- For a dedicated business line, records showing it is separate from personal use
- For first-home-landline claims, records identifying deductible additional business charges
FAQ
Is a phone bill tax deductible?
Usually yes for the business-use share when you are self-employed and the service is ordinary and necessary for the business. A business-only line can potentially be fully deductible.
Is a cell phone bill tax deductible?
Yes, the business-use share of recurring mobile service can generally be deductible. A mixed-use personal line requires a reasonable allocation; this page covers service rather than the phone device itself.
Is a landline phone bill tax deductible?
A second landline used for business can be deductible, but the base local service charge for the first telephone landline into your home is a nondeductible personal expense. Additional business charges on that first line can be deductible.
Is VoIP service tax deductible for business?
Business-use VoIP or cloud phone service can generally be deductible as a business communication cost. Deduct only the business share when the service also has personal use.
Can I deduct a family plan phone bill for business?
Partially. First identify the cost reasonably attributable to your line, then apply your business-use percentage. Do not deduct other family members' personal lines.
Where does a phone bill deduction go on Schedule C?
The latest finalized Schedule C instructions address business telephone costs under Line 25, Utilities. Enter only the deductible business amount and keep the first-home-landline base charge excluded.
Looking for other deductible expenses? See the full Expense Deductibility Guide.
Last reviewed: August 18, 2026