What qualifies as a business expense?

Apr 15, 2025 | Tax Tuesday

One of the most common questions we get asked is: “What exactly counts as a business expense?”

It’s a great question, as well as an important one, because claiming legitimate expenses helps reduce your taxable profits and, ultimately, your tax bill.

So, what qualifies?

In simple terms, a business expense is any cost that is “wholly and exclusively” incurred for the purpose of running your business. That might sound a bit vague, but HMRC is looking for a clear link between the expense and your business activities.

Common examples include:

  • Office rent, utilities, and supplies
  • Staff salaries and pensions
  • Accountancy and legal fees
  • Marketing and advertising costs
  • Travel expenses (excluding home-to-work travel)
  • Business insurance
  • Software subscriptions

What doesn’t qualify?

Personal costs, even if loosely connected to your work, typically don’t count.

Common examples include:

  • Daily commute costs
  • Client entertainment (not allowable for tax relief)
  • Clothing, unless it’s a uniform or protective gear
  • Non-business-related meals or holidays

What about mixed-use expenses?

Some expenses, like your phone bill or internet, may be used for both personal and business purposes. In those cases, you can only claim the business-use portion. It’s important to keep a reasonable record as HMRC may ask how you worked it out.

4 top tips to keep compliant

Below, we’re rounded up some useful actions to keep you on track:

  1. Ensure you keep good records. Store receipts and invoices digitally for all business-related purchases. Tools like Dext make this really easy.
  2. Separate your finances. It’s helpful to have a dedicated business bank account to avoid mixing personal and business transactions.
  3. Make sure you review expenses regularly. Revisit your expenses quarterly to ensure you’re not missing out on any allowable claims.
  4. There’s never a silly question, so seek professional advice if you’re unsure – incorrect claims can lead to penalties.

How can we help?

Need help navigating your business expenses? Get in touch with our team at tax@haroldsharp.co.uk or call 0161 905 1616.

Emma Round
Accountant | Manager
0161 905 1616
esr@haroldsharp.co.uk