Take advantage of the tax exemption for mobile phones

Many business owners and sole traders aren’t aware that HMRC allows a valuable tax exemption for mobile phones provided to employees or used for business purposes. If you’re currently paying tax on the full cost of a mobile phone, you could be missing out on a straightforward way to reduce your tax bill. Let’s explore how this exemption works and whether your business can benefit.

What is the mobile phone tax exemption?

Under HMRC’s beneficial loan rules and expenses guidance, a single mobile phone provided to an employee is exempt from being treated as a taxable benefit. This means you don’t need to report the cost on a P11D form or calculate a benefit-in-kind (BiK) figure—provided certain conditions are met.

The exemption applies to the provision of one mobile phone per employee. The phone itself, along with the contract and call charges, should fall outside the taxable benefits rules. This is a genuine relief that’s often overlooked, particularly by smaller firms and sole traders who may not have dedicated payroll departments.

It’s important to note that this exemption only applies to one phone per person. If you provide an employee with two mobile phones (perhaps a work and personal device), only one qualifies for the exemption, and the cost of the second becomes a taxable benefit.

Who can claim the exemption?

The exemption is available to any business—whether you’re a sole trader, partnership, or limited company. However, the conditions must be met consistently.

If you’re a sole trader using your own mobile phone for business purposes, the situation is slightly different. You can claim a proportion of your mobile phone costs as a business expense against your profits, reducing your self-assessment tax bill. HMRC recognises that business owners often use personal phones for both business and private calls, so you’re entitled to deduct the business-related portion. Many accountants recommend a reasonable apportionment—for example, 50% or 60% of the annual contract cost if that reflects your usage.

Limited companies should ensure the phone is recorded in the company’s records as a business asset. The contract should be in the company’s name, and clear documentation should demonstrate that the phone is provided for business purposes.

The practical requirements

To rely on this exemption, you’ll need to:

Document the provision: Keep records showing the phone was provided by the company for business purposes. This doesn’t need to be overly formal, but contemporaneous notes are essential if HMRC asks questions.
Limit it to one phone per employee: Only one exemption applies per person. If an employee receives multiple phones, you’ll need to calculate the benefit-in-kind for any additional devices.
Include it in your payroll records: Make sure your payroll software and year-end P11D submissions don’t include the phone as a taxable benefit.
Review the contract: Ensure the mobile phone contract is clearly a business arrangement. If an employee’s personal contract is simply reimbursed by the company, HMRC may view this differently.
Keep receipts and invoices: Maintain supplier invoices and payment records to support your position.

Avoiding common pitfalls

One mistake we see at Severn Accounting is businesses providing phones without properly documenting the arrangement. If you can’t demonstrate to HMRC that the phone was genuinely provided for business use, you may find yourself liable for backdated tax and national insurance contributions.

Another pitfall is conflating this exemption with salary sacrifice schemes. Salary sacrifice mobile phone schemes are different and come with their own rules and potential tax advantages—but they’re not the same as the general exemption. Seek professional advice before implementing a salary sacrifice arrangement.

Finally, keep your records up to date. If you provide a phone to an employee who later leaves the business, ensure the phone provision is correctly reflected in their final P11D. Incomplete or inaccurate P11D submissions can trigger HMRC enquiries.

Getting the most from this relief

If you’re a growing business, the cumulative saving from this exemption across multiple employees can be meaningful. On top of the income tax saving, you’ll also avoid secondary national insurance contributions on the phone’s value, which adds further value to the relief.

Whether you’re just starting to use this exemption or want to ensure you’re claiming it correctly, it’s worth reviewing your current practice with a qualified accountant. A simple audit of your mobile phone arrangements could uncover missed tax savings.

For tailored advice, contact Severn Accounting — we’re here to help.