How to Set Up a Personal Training Business Inside Your Gym

Personal Training as a Revenue Stream — Getting the Structure Right

Personal training is one of the most natural adjacent revenue streams for an independent gym. Your members already want to progress faster; your facility already has the equipment; adding a PT offering requires relatively little capital investment compared to the return. But the way you structure PT within your gym — who owns the client relationship, how the money flows, what happens when a PT leaves — has significant implications for your revenue, your legal exposure, and your long-term business resilience.

This guide covers the two primary PT models, the financial structures that work, and the contractual protections every gym owner should have in place.

Model 1: Employed PT

Under this model, the PT is your employee. They work the hours you set, deliver sessions to your members, and are paid a wage (plus commission in many structures). All revenue from PT sessions belongs to the gym; the PT receives their employment package.

Advantages:

• You control the service: standards, scheduling, client allocation, and pricing are all set by you.
• The client relationship belongs to the gym — a PT who leaves cannot take “their” clients because the clients were booked through the gym, not the PT personally.
• Easier to maintain consistent quality and brand standards.
• PT is available for additional duties (floor coverage, inductions, class instruction) not just their personal training sessions.

Disadvantages:

• You pay wages regardless of PT session volume. An employed PT with a thin client book is a cost, not a revenue contributor.
• Employment obligations apply (holiday pay, sick pay, NICs, pension auto-enrolment).
• Finding PTs willing to work as employees (rather than self-employed) is increasingly difficult in the fitness industry.

Typical financial structure: Base wage for floor coverage hours plus a commission per PT session (typically 30–50% of the session fee to the PT, with the gym taking the balance). A PT charging £50/session with a 40% commission earns £20/session; the gym retains £30. For a PT doing 20 sessions per week, the gym generates £600/week PT revenue net of commission, before payroll costs.

Model 2: Self-Employed Floor Rental

Under this model, PTs are self-employed contractors who pay the gym a fee — either a flat monthly floor rent or a percentage of their session revenue — for the right to use the facilities and access members. The PT sets their own rates, retains their own client relationships, and pays their own tax.

Advantages:

• No employment liability — no PAYE, no NICs, no holiday or sick pay.
• The gym earns revenue from a PT regardless of whether that PT’s client base is thin or full.
• Easier to scale: adding a new PT adds revenue without adding headcount complexity.
• Attractive to experienced PTs who prefer to run their own business.

Disadvantages:

• The client relationship belongs to the PT, not the gym. A PT who leaves can, and often will, take clients with them — potentially to a competitor gym or to train clients in a home or outdoor setting.
• Harder to enforce quality standards; a self-employed PT who delivers a poor client experience reflects on your gym but is not under your direct management.
• Risk of false self-employment (see below).

Typical financial structure:

• Flat floor rent — a fixed monthly fee (typically £100–400/month depending on location, facilities, and access hours) paid by the PT regardless of session volume. Provides predictable gym income; suits established PTs with consistent client bases.
• Percentage of revenue — the gym takes 20–30% of the PT’s session fees. Better for new PTs building their client base (lower risk for them); more variable income for the gym.
• Hybrid — a lower flat rent plus a smaller percentage of revenue above a threshold. Balances predictability with upside.

The False Self-Employment Risk

If a “self-employed” PT works exclusively at your gym, at hours you set, teaching classes you design, with no other clients — HMRC is likely to classify them as employed, regardless of the contract they signed. This exposes you to back-payment of PAYE tax, employee NICs, employer NICs, and potentially penalties and interest stretching back years.

The indicators of genuine self-employment: works for multiple clients, sets their own rates, provides their own insurance, has their own client agreements, can substitute another PT in their place, takes genuine financial risk. If these do not apply, take employment law or accountancy advice before treating the arrangement as self-employed.

Protecting the Gym When a PT Leaves

The most common and most damaging scenario in gym PT arrangements is a PT who builds a client base at your gym and then leaves — taking their clients with them or directing them to train elsewhere. For employed PTs, this risk is structural (clients booked through the gym stay with the gym). For self-employed PTs, it requires contractual protection.

Client introduction fee

A provision in your floor rental agreement that states the gym introduced specific clients to the PT — and that if the PT leaves and continues training those clients outside the gym, a client introduction fee is payable — is enforceable in many circumstances. The fee should be reasonable (2–3 months of the session revenue from those clients is typical) to be defensible.

Non-solicitation clauses

A non-solicitation clause prevents a PT from actively approaching gym members to continue training outside the gym after leaving. This is different from a non-compete clause (which prevents the PT from working in the fitness industry at all — almost never enforceable in the UK) and is far more likely to hold up. It must be:

• Reasonable in scope — typically 6–12 months post-departure and limited to members they trained while at the gym
• Geographically limited — “within 5 miles of the gym” is reasonable; “anywhere in the UK” is not
• Part of the original contract, not added after the fact

Get these provisions drafted or reviewed by an employment or commercial solicitor. Poorly drafted clauses are not worth the paper they are written on.

Membership data

Under GDPR, the PT cannot take member contact details with them when they leave. Member data belongs to the gym, not to the PT. Make this explicit in your floor rental agreement and ensure your booking and CRM systems are configured so that member data is held by the gym, not in the PT’s personal apps or phone.

Pricing PT Without Cannibalising Membership

A common error in gym PT programmes is pricing PT so cheaply that members cancel their memberships and just do PT sessions instead. Your PT pricing should be structured so that the most economical combination for a member who wants regular PT is PT plus membership — not PT instead of membership.

The simplest protection: make PT bookings at your gym contingent on active membership. A non-member who wants PT at your facility pays a non-member session rate (e.g., £65) that includes a day pass premium; a member pays the member PT rate (e.g., £50). The differential incentivises membership and keeps PT as an add-on rather than an alternative.

A Well-Structured PT Programme Adds Revenue and Retention

Members who do personal training at your gym stay longer, spend more, and generate more referrals than members who use the floor independently. The investment in getting the structure right — employment status, financial model, and contractual protection — pays for itself many times over.

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