Locum Doctor Expenses: Are You Claiming Everything?

Many doctors working as locums are missing out on hundreds or even thousands of pounds in tax relief each year. The reason is simple, not all Locum Doctor Expenses are claimed in full, and some are recorded incorrectly.

Whether you work across multiple NHS trusts, GP practices, or private clinics, understanding what counts as an allowable expense is key to keeping more of what you earn.

Getting this right also matters for compliance. HMRC expects every locum to maintain accurate records and claim only legitimate costs. The good news? With proper guidance, you can reduce your tax bill without taking unnecessary risks.

What Counts as Allowable Expenses for Locum Doctors?

Allowable expenses are the costs you incur wholly and exclusively for your work. For locums, this often includes:

• Professional fees and memberships – GMC, BMA, Medical Defence Union, Royal Colleges
• Work-related travel – mileage between temporary workplaces, parking, and public transport
• Medical equipment and consumables – stethoscopes, scrubs, and protective clothing
• Training and CPD – mandatory or job-specific courses to maintain your licence
• Use of home – a proportion of home office expenses if you manage bookings, invoices, or accounts there
• Insurance – professional indemnity and income protection policies

Expenses that are partly personal (for example, your phone bill) can still be claimed proportionally, based on business use.

For an overview of how tax applies to medical professionals, see our guide on How Tax Works for Locum Doctors in the UK.

Commonly Missed Expense Claims

Even experienced locums often overlook legitimate deductions. HMRC allows a wide range of costs, but they must relate directly to your professional duties. The most frequently missed Locum Doctor Expenses include:

• Mileage and travel between sites – Travel from one temporary workplace to another is fully deductible. For 2025/26, HMRC’s approved mileage rate remains 45p per mile for the first 10,000 miles, and 25p thereafter. Keep a detailed log of journeys and dates.
• Training and revalidation costs – Mandatory CPD, revalidation courses, and specialist workshops count as allowable expenses if they maintain your existing skills.
• Professional subscriptions – Fees to the British Medical Association (BMA), Royal Colleges, and defence unions are claimable if they relate directly to your work. See BMA guidance on tax relief for locum doctors for further confirmation.
• Equipment replacement – Medical tools, laptops, or tablets used for bookings or clinical work qualify for relief under capital allowances or replacement cost rules.
• Home working and admin costs – Many locums prepare invoices and records from home. You can claim part of your broadband, energy, or rent if used for administrative work.
• Indemnity and insurance premiums – Professional indemnity insurance, income protection, and specialist cover (such as locum gap insurance) are allowable when linked to your work.

Missing these deductions means you are effectively paying tax on income you did not keep. Careful record-keeping ensures every legitimate cost is captured and your tax return stands up to HMRC review.

How to Keep HMRC-Compliant Records

Accurate record-keeping is essential for claiming Locum Doctor Expenses. HMRC does not require receipts for every small cost, but you must be able to show how each figure was calculated if asked.

Here are the essentials:

• Keep receipts and invoices – Store digital copies for at least five years after the 31 January filing deadline. Cloud-based systems like QuickBooks or FreeAgent can simplify this.
• Maintain a mileage log – Record start and end locations, dates, and miles travelled between NHS trusts, GP practices, or private clinics.
• Separate work and personal spending – Use a dedicated business bank account if possible. It makes it easier to evidence expenses and avoids confusion during an HMRC review.
• Use digital accounting tools – From April 2026, Making Tax Digital (MTD) will apply to many self-employed locums, requiring quarterly submissions of income and expenses. Keeping digital records now makes compliance smoother later.
• Track training and professional fees – Record all renewals, subscriptions, and revalidation expenses in one place so you never miss a deduction.

These small administrative habits can make a major difference to your tax position. For structured support, explore our Locums Services at Nichols Medical Accountants.

Should You Operate as a Sole Trader or Through a Limited Company?

How you structure your work affects both how you pay tax and which Locum Doctor Expenses you can claim. The right setup depends on your income level, working pattern, and long-term goals.

Sole Trader:

Most locum doctors begin this way. You report income and expenses through a Self Assessment tax return and pay Income Tax and National Insurance on profits. This route is simple to manage and flexible for short-term contracts.

Limited Company:

Once your income grows or you take on regular contracts, forming a company can offer advantages. You can draw a mix of salary and dividends, access wider business deductions, and separate personal and business finances.

However, the company structure adds admin and compliance costs, including annual accounts and Corporation Tax filings.

If you are unsure which route is right for you, our guide on Locum Doctor Tax in 2025 explains how to compare both structures for maximum efficiency.

Whatever you choose, the goal remains the same: to manage income effectively, stay compliant, and claim every legitimate expense available.

How Nichols Medical Can Help

Getting your Locum Doctor Expenses right can make a measurable difference to your take-home pay. But HMRC’s guidance can be complex, and it is easy to overlook legitimate deductions.

At Nichols Medical Accountants, we specialise in working with locum GPs, hospital doctors, and medical professionals across the UK. Our team helps you:

• Identify every allowable expense and maximise your tax relief
• Set up digital record-keeping that meets HMRC’s Making Tax Digital standards
• Prepare accurate Self Assessment or limited company accounts
• Plan ahead for payments on account and upcoming tax changes

We understand how the medical sector works — from NHS pension contributions to sessional contracts — and tailor our advice around your working patterns.

For personalised support or a review of your current expenses, contact us today or explore our dedicated Locums Services.

---

Disclaimer: This article has been prepared by Nichols Medical Accountants to provide general information on Locum Doctor Expenses and related tax topics. It is not intended to be, and should not be relied upon as, financial or legal advice. Professional advice tailored to your circumstances should always be sought before taking action.