Employment Status and Gym Contracts
Written and reviewed by the Personal Trainer Accountants editorial team. Last reviewed 8 August 2026.
This is the one genuinely awkward question in the trade. A large number of trainers work in a commercial gym under a self-employed contract, and for most of them that reflects reality. For some it does not.
It matters because if the arrangement is really employment, the tax and National Insurance treatment is wrong for both sides, and it is the gym that carries most of the exposure. It also affects rights such as holiday pay and the minimum wage, which is a separate question from tax.
Why Status Is Not Decided by the Contract
A contract that says self-employed does not make someone self-employed. Status is decided on how the arrangement actually works in practice, and if the paperwork and the reality diverge, the reality wins.
That is why a template contract downloaded by a gym chain does not settle anything, and why a trainer cannot rely on it either. It is evidence, not an answer.
The Tests HMRC Applies
The questions that matter are about control, substitution and risk. Who decides which clients you take, when you work and what you charge. Whether you could send someone else in your place. Whether you are exposed to financial loss, for example by paying rent whether or not clients turn up. Whether you provide your own equipment. Whether you can work for other gyms.
A trainer who rents floor space, finds their own clients, sets their own prices and can train elsewhere is a long way towards self-employed. A trainer on a rota, taking gym-assigned clients at gym-set rates, with no ability to send a substitute and no financial risk, is a long way towards employment.
Most real arrangements sit between those, which is exactly why nobody should give you a quick answer.
What CEST Does and Does Not Settle
HMRC publishes a tool called Check Employment Status for Tax. It gives HMRC's view based on what you enter, and HMRC says it will stand by the result as long as the information given remains accurate and is in accordance with its guidance. Anyone can use it, including hirers, workers and agencies, and it needs a contract in place or expected.
Two limits worth understanding. It answers on the information you give it, so a hopeful description produces a hopeful answer that protects nobody. And it addresses status for tax, which is not the same question as employment rights, where the categories include a "worker" status that sits between employee and self-employed.
The employment rights side is set out by Acas, and the tax tool itself is on gov.uk.
If Your Gym Changes Its Model
The moment to look at this is when the arrangement changes: a move from rent-a-space to a rota, a new contract, a chain taking over, or the gym starting to allocate clients and set prices.
Carrying on filing on the old basis for a year because the paperwork still says self-employed is how a small problem becomes a backdated one. If something has changed, it is worth working through the tests then rather than at the next year end.
We will work through those tests with you and help you use HMRC's tool properly. We will not tell you your status, and it is worth being wary of anyone who offers to, particularly if they are selling the contract as well.