Contractors

Is a contractor an employee?

A contractor is not automatically an employee, but the distinction depends on the actual working relationship rather than the contract label. HMRC examines factors including control over how work is done, the right to send a substitute, and whether there is mutuality of obligation. If your engagement looks more like employment than genuine self-employment, IR35 rules mean you will be taxed as an employee.

By Jordan Macey MAAT Reviewed by Noor Fiaz Updated 16 Apr 2026 1

Is a contractor an employee? - Know More - GoForma Contractors | UK Accountants & Tax Advisors

Key takeaways

Whether a contractor is an employee depends on the reality of the working arrangement, not the label on the contract.
HMRC uses three primary tests: control over work methods, the right to provide a substitute, and mutuality of obligation between engagements.
Contractors who fall inside IR35 are taxed as employees through PAYE, losing most of the tax benefits of operating through a limited company.
Since April 2021, medium and large private sector clients are responsible for determining the IR35 status of contractor engagements.
Working for a single client over a long period with no substitution clause significantly increases the risk of being classified as an employee.

Contractors can be self-employed, a worker or an employee. Those who are employed through an umbrella company or an agency could be considered a worker or an employee.

If a contractor is a sole trader or runs a limited company, he or she will then be considered a self-employed person.

Frequently asked questions

What is the legal difference between a contractor and an employee?

An employee works under a contract of employment with guaranteed hours, statutory benefits, and work tasks directed by their employer. A contractor works under a contract for services, controls how they deliver the agreed work, has the right to send a substitute, and bears their own financial risk. UK employment law and tax legislation treat these as fundamentally different types of working relationships.

What are the IR35 tests for determining employment status?

The three main tests applied by HMRC are control, which examines whether the client directs how, when, and where work is carried out; personal service, which checks whether you must perform the work yourself or have the right to send a substitute; and mutuality of obligation, which assesses whether there is an ongoing commitment for the client to offer work and for you to accept it.

Who decides whether a contractor is inside or outside IR35?

For medium and large private sector clients, the end client organisation is legally responsible for making the IR35 determination and communicating it to the contractor via a Status Determination Statement before the engagement begins. For engagements with small private sector clients, the contractor's own limited company remains responsible for making and defending the IR35 assessment independently.

What happens if a contractor is deemed an employee by HMRC?

If your engagement falls inside IR35, income tax and National Insurance are deducted at source through PAYE as if you were a direct employee of the client. You lose the ability to extract income through tax-efficient dividends and can only claim a flat 5 percent expense deduction from your gross income. Backdated assessments can include all unpaid tax, accrued interest, and financial penalties.

Can a contractor work for one client and still be self-employed?

Yes, but working for a single client over an extended period does increase the level of IR35 scrutiny from HMRC. Working exclusively for one client is not automatically classified as employment, provided you can demonstrate genuine self-employment indicators such as a substitution clause, project-based deliverables, use of your own equipment, and no ongoing obligation to accept further work.

Does having a limited company make you self-employed?

No. Having a limited company does not by itself determine your employment status for tax purposes. HMRC looks through the intermediary company to examine the underlying working relationship between you and the end client. If that relationship has the characteristics of employment rather than genuine self-employment, the IR35 off-payroll rules will apply regardless of your company structure.

How can contractors reduce the risk of being classified as an employee?

Ensure your contract includes a genuine and exercisable substitution clause, avoid exclusive long-term arrangements with a single client, use your own equipment where practical, invoice for defined project deliverables rather than just time spent, and maintain clearly separate working practices from the client's permanent staff. Have each new contract reviewed for IR35 compliance by a specialist before starting work.

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