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Essential Tax Guidelines for Locum Pharmacists

  • Writer: Locumr
    Locumr
  • Dec 22, 2025
  • 4 min read

Working as a self-employed locum pharmacist offers flexibility and the opportunity to manage your own schedule. However, it also brings specific tax responsibilities that require careful attention. Navigating tax rules for locums can be complex, but understanding the essentials will help you avoid costly mistakes and ensure compliance with HMRC regulations. In this article, I will share practical advice and clear explanations to help you manage your tax affairs effectively.


Understanding Tax Rules for Locums


When you work as a self-employed locum pharmacist, you are responsible for managing your own tax payments. Unlike employed pharmacists, you do not have tax automatically deducted from your earnings. Instead, you must register as self-employed with HMRC and complete a Self Assessment tax return each year.


Key Tax Obligations


  • Registering as Self-Employed: You must notify HMRC within three months of starting your locum work.

  • Keeping Accurate Records: Maintain detailed records of all income and expenses related to your locum work.

  • Filing a Self Assessment Tax Return: Submit your tax return by 31 January following the end of the tax year.

  • Paying Income Tax and National Insurance Contributions (NICs): Calculate and pay your tax liabilities based on your profits.


Allowable Expenses


One of the benefits of being self-employed is the ability to deduct allowable business expenses from your income before calculating tax. Common expenses for locum pharmacists include:


  • Travel costs between assignments (excluding commuting to a regular workplace)

  • Professional indemnity insurance

  • Registration fees with the General Pharmaceutical Council (GPhC)

  • Uniform and laundry costs

  • Mobile phone and internet expenses related to work

  • Training and development courses


Keeping receipts and detailed records of these expenses is essential to support your claims.


Close-up view of a calculator and tax documents on a wooden desk
Calculating tax obligations for locum pharmacists

Which Pharmacist Has the Highest Salary?


Pharmacist salaries vary widely depending on experience, location, and employment type. Generally, locum pharmacists can earn higher hourly rates compared to salaried pharmacists due to the flexibility and short-term nature of their work. However, this comes with the responsibility of managing taxes and expenses independently.


Salaried Pharmacists


  • Typically receive a fixed annual salary.

  • May have benefits such as pension contributions and paid leave.

  • Tax is deducted at source through PAYE (Pay As You Earn).


Locum Pharmacists


  • Paid per shift or hour, often at a higher rate.

  • Responsible for their own tax payments and NICs.

  • Can claim allowable expenses to reduce taxable income.


Specialist Pharmacists


Pharmacists with specialist skills or working in high-demand areas, such as clinical pharmacy or hospital pharmacy, may command higher salaries. However, locum pharmacists with specialist expertise can also negotiate premium rates.


Understanding these differences helps in planning your finances and tax obligations effectively.


Eye-level view of a pharmacy shelf with various medicines and labels

Practical Tips for Managing Your Tax Affairs


Managing your tax affairs as a self-employed locum pharmacist requires organisation and proactive planning. Here are some actionable recommendations:


1. Use Accounting Software


Invest in reliable accounting software designed for self-employed professionals. This will help you track income, expenses, and generate reports needed for your tax return.


2. Set Aside Money for Tax Payments


Since tax is not deducted automatically, it is wise to set aside a percentage of your income regularly. A common recommendation is to reserve around 30% of your earnings to cover income tax and NICs.


3. Keep Detailed Records


Maintain a digital or physical filing system for all invoices, receipts, and bank statements. Accurate records simplify the tax return process and provide evidence in case of HMRC enquiries.


4. Understand VAT Thresholds


If your annual turnover exceeds the VAT registration threshold (currently £85,000), you must register for VAT. This adds complexity but also allows you to reclaim VAT on business expenses.


5. Consider Professional Advice


Engaging an accountant or tax advisor familiar with locum pharmacists can save time and reduce errors. They can also help identify additional tax reliefs and ensure compliance.


Avoiding Common Tax Mistakes


Many self-employed locum pharmacists encounter pitfalls that can lead to penalties or unexpected tax bills. Awareness of these common mistakes can help you avoid them:


  • Missing the Self Assessment Deadline: Late filing incurs fines and interest charges.

  • Underestimating Tax Payments: Failing to budget for tax can cause cash flow problems.

  • Claiming Non-Allowable Expenses: Only legitimate business expenses can be deducted.

  • Not Registering as Self-Employed on Time: This can result in penalties and backdated tax bills.

  • Ignoring National Insurance Contributions: NICs are a significant part of your tax liability.


By staying organised and informed, you can minimise these risks.


How Locumr Supports Your Tax Management


Managing tax and administrative tasks can be time-consuming and stressful. This is where tools like Locumr come into play. Locumr is designed specifically for self-employed pharmacists, helping to streamline financial management and reduce year-end surprises.


Features of Locumr


  • Automated Income and Expense Tracking: Easily record shifts and expenses.

  • Tax Estimation Tools: Get real-time estimates of your tax liabilities.

  • Invoice Generation: Create professional invoices quickly.

  • Compliance Reminders: Stay on top of deadlines and registrations.


Using such an app allows you to focus on your work while maintaining control over your financial responsibilities.



By understanding and applying these essential tax guidelines, you can confidently manage your self-employed locum pharmacist career. Staying organised, keeping accurate records, and using the right tools will help you meet your tax obligations efficiently and avoid unexpected financial issues.

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