Most personal trainer income doesn't come from one place. a gym floor-rental arrangement, a handful of private clients, some online coaching, maybe a few PAYE hours on the gym's timetable too. Making Tax Digital only cares about one slice of that: your genuinely self-employed income. Here's how to work out what counts, what doesn't, and where gym-based PTs specifically run into trouble with HMRC.
Personal training has one of the most fragmented income structures of any profession on this site. You might rent floor space at one gym, take PAYE shifts covering classes at another, run online coaching through an app, and see a handful of private clients at their homes — all in the same tax year. Making Tax Digital only looks at the self-employed slice of that picture, so the first job is separating out which of your income streams actually counts.
Before MTD even matters, HMRC needs to agree that your gym-based work is genuine self-employment in the first place. This is the same test applied to hairdressers on chair rental, and it comes down to who's really in control.
| Genuinely self-employed | HMRC employment-status risk |
|---|---|
| You set your own session prices | Gym sets prices and pays you a percentage split |
| You take payment directly from clients | Gym takes payment and pays you commission |
| You pay a fixed gym rent regardless of sessions | Your pay depends on hours the gym rota's you in |
| You can work at other gyms too | Exclusivity required — one gym only |
| You could send a substitute trainer to cover you | You personally must deliver every session |
The classic risk pattern is the "gym takes 30%, you keep 70%" commission model combined with the gym controlling your schedule and clients — HMRC's tests look at the reality of the working relationship, not what your contract calls you. If your arrangement sits mostly in the right-hand column, HMRC may treat you as effectively employed by the gym, in which case that income isn't self-employment at all and, again, doesn't count towards MTD (it should be on PAYE instead).
Once you've established which income is genuinely self-employed, the next step is combining it correctly. Training clients at two different gyms, running an online coaching programme, and seeing people at their homes are all normally the same self-employment business, not four separate ones — so all of it is added together as one gross income figure against the MTD threshold.
PAYE hours you work directly for a gym (covering classes, reception shifts, or a salaried instructor role) stay completely separate. that income is taxed through payroll and never enters the MTD calculation, no matter how much of your total income it represents.
Jordan's PAYE shifts play no part in the calculation. Their self-employed PT and coaching income combine to £33,800 — under the current £50,000 threshold, but above the £30,000 threshold arriving in April 2027, so Jordan will need to prepare for MTD from that date based on 2025/26 figures.
| Expense | Typically allowable? | Note |
|---|---|---|
| Gym floor-rental fee | Yes | Fully deductible if you pay it to train clients |
| Per-session commission paid to a gym | Yes | Also claimable, same as rental fees |
| Your own gym membership | Usually no | Dual personal/business use disqualifies it unless separate from any rental fee |
| Public liability & professional indemnity insurance | Yes | Standard PT business cover |
| REPs/CIMSPA registration, CPD courses | Yes | Professional body fees and relevant training |
| Branded PT uniform | Yes | Everyday gym clothing does not qualify |
| Small equipment (bands, mats, timers) | Yes | Kit you supply yourself, not gym-owned equipment |
| Client entertainment, gifts | No | Not allowable under HMRC rules |
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No. Working from inside a gym doesn't determine your MTD position, your employment status does. If you're genuinely self-employed (you set your own prices, take your own payments, and pay a fixed gym rent), your gross self-employed income counts towards the threshold regardless of where you train clients.
Usually not, if it's a standard membership that also gives you personal access to the gym. HMRC treats this as having a dual purpose. If you specifically pay to rent floor space or pay per session to train clients, separate from any personal membership, that rental or session fee is normally allowable.
No. Only your self-employment income counts towards the MTD threshold. Your PAYE salary from the gym is employment income, taxed separately through payroll, and plays no part in the MTD calculation, even if it's your larger income source.
Yes, if you're self-employed. Online coaching, in-person sessions, and gym-rental clients are normally all the same self-employment business for tax purposes, so their gross income is added together as one figure when checking against the MTD threshold.
Signs include the gym setting your prices, taking client payments and paying you a commission split, controlling your schedule, requiring exclusivity, or not allowing you to send a substitute trainer. If your arrangement looks like this, HMRC may view you as effectively employed by the gym rather than genuinely self-employed.