Many locum doctors consider setting up a limited company to manage their medical work, but understanding the locum doctor limited company pros and cons is essential before making this decision. The tax landscape for locums has become increasingly complex, particularly with IR35 legislation affecting how medical professionals can structure their work arrangements.
This guide examines the key advantages and disadvantages of operating as a limited company, helping you make an informed decision about the most suitable structure for your locum practice.
Advantages of a Locum Doctor Limited Company
Tax Efficiency Potential
The primary attraction of a limited company is potential tax savings through profit extraction strategies. Corporation tax rates (25% for profits over £250k, 19% for smaller companies) can be lower than higher rate income tax (40%) and additional rate tax (45%).
A locum earning £80,000 annually might save £3,000-5,000 per year through dividend extraction, depending on their total income and personal circumstances. However, these savings depend heavily on IR35 status and total income levels.
Professional Credibility
Operating through a limited company can enhance professional standing with some healthcare providers and agencies. It demonstrates business acumen and may open doors to higher-value contracts or direct relationships with trusts.
Many private hospitals and healthcare groups prefer working with incorporated professionals, viewing it as a sign of established practice and professional commitment.
Business Expense Deductions
Limited companies can claim a broader range of business expenses against corporation tax. This includes professional development costs, travel between assignments, professional indemnity insurance, and equipment purchases.
The company structure also allows for more sophisticated expense planning, including pension contributions up to the annual allowance limits.
Continuity and Succession Planning
A company structure provides continuity beyond individual involvement. This becomes important if you plan to build a larger locum business, take on associates, or eventually sell the practice.
The corporate structure also facilitates business banking relationships and can make it easier to secure professional loans or equipment finance.
Disadvantages of Operating Through a Limited Company
IR35 Compliance Complexity
The most significant challenge facing locum doctor limited companies is IR35 legislation. Off-payroll working rules require careful assessment of each contract to determine whether you're operating as a "disguised employee" or genuine contractor.
Many NHS trusts now apply IR35 blanket determinations, treating most locum arrangements as inside IR35. This eliminates many tax advantages while retaining company administrative burdens.
Increased Administrative Requirements
Running a limited company involves substantial administrative overhead. You'll need to file annual accounts, corporation tax returns, and maintain company records. Most locum doctors require professional accounting support, adding £1,500-3,000 annually to running costs.
Company secretarial duties, VAT registration (if turnover exceeds £85,000), and ongoing compliance create ongoing administrative burdens that many find challenging alongside clinical commitments.
Double Taxation on Profits
Company profits face corporation tax, then personal tax when extracted as dividends. While dividend tax rates are lower than income tax, the combined burden can exceed sole trader taxation, particularly for higher earners.
National Insurance savings through dividends are also reduced by the corporation tax charge, making the overall tax position less attractive than many assume.
Limited NHS Pension Flexibility
Company employment can complicate NHS pension planning. Locum doctors often need to balance company dividends with sufficient employment income to maintain pension benefits and avoid annual allowance charges.
The interaction between company profits, personal income, and pension contributions requires careful planning to optimize both tax efficiency and retirement provision.
Key Considerations Before Incorporating
Income Level and Consistency
Limited company benefits typically become meaningful above £60,000-70,000 annual earnings. Below this threshold, administrative costs often outweigh tax savings, particularly under IR35.
Consider your expected earnings trajectory and whether locum work represents a temporary or permanent career direction.
Contract Types and Clients
Examine your typical work arrangements. If most contracts are with NHS trusts using framework agreements, IR35 will likely apply, reducing company benefits significantly.
Private sector work, direct relationships with healthcare providers, and genuine contractor arrangements offer better scope for company tax advantages.
Personal Risk Tolerance
Company directors face additional legal responsibilities and potential personal liability in certain circumstances. Professional indemnity insurance requirements may also differ between employed and company arrangements.
Consider whether you're comfortable with the increased complexity and responsibility that comes with company ownership.
Alternative Structures to Consider
Sole Trader Status
Many locum doctors find sole trader status offers the best balance of simplicity and tax efficiency, particularly where IR35 concerns make company structures less attractive.
Sole traders can still claim legitimate business expenses and make pension contributions up to annual allowance limits.
Umbrella Company Arrangements
Umbrella companies handle payroll and administrative requirements while providing employee benefits. This can suit locums wanting simplicity without full incorporation complexity.
However, umbrella arrangements typically result in higher overall tax and National Insurance costs compared to other structures.
Making the Right Decision
The locum doctor limited company pros and cons vary significantly based on individual circumstances, income levels, and work patterns. What works for one locum may be unsuitable for another.
Before making any decision, model the tax implications under different scenarios and consider both current and future work arrangements. Professional advice is essential given the complexity of IR35 rules and their interaction with medical professional requirements.
Our specialist medical accountants regularly help locum doctors evaluate their options and choose the most appropriate structure for their circumstances. The right decision depends on careful analysis of your specific situation rather than general rules about company benefits.