Last Updated on September 4, 2026 by Amrita Das
If you’re a freelancer who uses a cell phone for work, you can write off the business-use portion of your cell phone bill as a business expense on Schedule C. You can’t deduct the personal portion—so if you use your phone 60% for business, you can write off 60% of the bill.
Your cell phone bill is one of the most overlooked tax deductions available to self-employed workers. If you take client calls, answer emails, schedule projects, or run your business from your phone, part of that monthly bill is a legitimate write-off.
The tricky part isn’t whether you qualify—it’s figuring out how much you can claim and keeping the right records to back it up. However, read this guide to learn everything about the freelancer Cell Phone Bill tax deduction.
Yes, You Can Write Off Your Cell Phone Bill—Here Is the Catch
Can I Write Off My Cell Phone Bill If I Use It for Work?
Yes, you can claim your phone expense similar to an internet expense as a freelancer. If you’re self-employed and use your cell phone for business, the IRS lets you claim the business use of your phone as a tax deduction.
The key word is business. A personal cell phone used partly for work doesn’t qualify for a full deduction—only the slice tied to your business does. According to TurboTax, if 30% of your time on the phone is spent on business, you could legitimately deduct 30% of your phone bill.
There’s one important exception. If you carry a separate phone used exclusively for business, that phone bill becomes a 100% business expense.
How Much of Your Cell Phone Bill Can You Actually Deduct?
You can only deduct the percentage of your phone costs that applies to business use. You can’t claim the personal portion unless it’s a “de minimis,” or trivial, amount.
Look how it works. If 30% of your time on the phone is spent on business, you could legitimately deduct 30% of your phone bill. If you spend half your phone time on business, you may be able to deduct 50%.
The tricky part is figuring out that percentage honestly and being able to prove it. The IRS wants deductions grounded in real usage, not guesses.
Should You Get a Second Phone for Business?
If splitting your bill sounds like a headache, there’s a cleaner option: get a separate phone and use it only for business.
When a phone is used exclusively for business, the entire cost becomes a 100% business expense. No percentages, no splitting, no gray areas. This also makes life easier if the IRS ever asks questions. If you carry a separate personal cell phone during business hours and make all your personal calls on that one, the IRS will likely accept that your business phone is purely for business.
For many self-employed people, the peace of mind is worth the extra device.
What If Your Employer Gives You a Phone?
The rules shift when your employer provides the phone. A company cell phone can affect your taxable income, depending on how you use it.
According to Schneider Downs, personal use of a company cell phone is considered a fringe benefit. Depending on its value, that benefit could be included in your gross income. The good news is that “de minimis,” or trivial, fringe benefits typically aren’t counted as income.
What About a Landline?
Landlines follow a stricter rule. The cost of the first landline into your home is never deductible—even if you use it entirely for work. The IRS treats it as a personal expense. But a second, dedicated business line is fully deductible.
How to Calculate Your Business-Use Percentage
The IRS doesn’t require one specific formula. It just needs to be reasonable and consistent. Here are three methods freelancers commonly use.
Method 1: Time-Based Allocation
Track how many hours you use your phone for work versus personal use, then divide.
Example: You spend 40 hours a week on business calls and apps, and about 15 hours on personal use. That’s 55 hours total. Your business percentage is 40 ÷ 55 = 73%. If your monthly bill is $80, you can deduct about $58 a month, or roughly $700 a year.
Method 2: Device-Based Allocation
If you’re on a shared plan, divide the cost by the number of lines and claim the ones used for business.
Example: You have a family plan with four lines for $180 a month. One line is your dedicated business phone. Your deduction is $180 ÷ 4 = $45/month, or $540 a year.
Method 3: Conservative Percentage Estimate
Many freelancers use a flat, defensible percentage based on how they actually work. If you freelance full-time and rarely use your phone for personal tasks, 80–90% is defensible. If you’re a part-time side-gigger, 30–50% is a safer choice.
Whichever method you pick, stick with it and write down how you arrived at your number.
Can You Write Off the Phone Itself?
Yes. If you buy a phone mainly for business, the device is deductible too—not just the monthly service.
For a phone used entirely for business, you can deduct the full cost. For a mixed-use phone, you deduct only the business-use percentage. Depending on the price, you may be able to write off the full cost in the year you buy it (under Section 179) or spread it out through depreciation over several years.
If you use the phone for both business and personal purposes, apply the same percentage you use for your bill to the purchase price.
