Tax for self-employed personal trainers
Reviewed by Rob Webb, practising accountant since 2015 · Last reviewed September 2026 · Figures are for the 2026/27 tax yearReviewed by Rob Webb, practising accountant since 2015 · Last reviewed September 2026 · Figures are for the 2026/27 tax yearPersonal trainer? You're probably self-employed, even inside someone else's gym. Once your fees pass £1,000 in a tax year, you must register with HMRC.
How much tax will you pay? On £41,800 of client fees with £7,340 of costs, including £3,840 of gym rent, about £5,691 for 2026/27.
Want to check your own costs? See what you can claim as a personal trainer →
Usually yes. The typical arrangement is that you pay the gym for the right to train your own clients on its floor, either a fixed monthly rent or a share of what your clients pay. You build your own client list, set your own prices and hours, carry your own insurance, and earn nothing if nobody books. That is self-employment, and the gym is your landlord rather than your employer.
It is different where the gym employs you. If you are on the rota, paid an hourly rate for gym-floor shifts whether or not you have clients, told what to do and when, and given a payslip with tax already deducted, that part is employment and belongs on the employment pages of your return.
A very common pattern is both at once: twelve employed hours a week on the gym floor on PAYE, plus your own PT clients around them. You report both, in their own sections.
Register with HMRC by 5 October after the end of the first tax year in which your self-employed fees exceeded £1,000 before expenses. Below £1,000 the trading allowance generally means no registration and no return for that income. The announced increase of that threshold to £3,000 has no confirmed start date on gov.uk, so £1,000 remains the figure for 2026/27.
A trainer renting space at £320 a month, with a mix of one-to-one clients and small groups, in 2026/27.
| Client fees for the year | £41,800 |
| Gym rent — £320 a month | £3,840 |
| Public liability and professional indemnity insurance | £240 |
| CPD courses and professional register fees | £430 |
| Equipment — kettlebells, bands, mats, suspension trainer | £680 |
| Client app, programming software, music licence | £300 |
| Mileage — 2,600 business miles at 55p | £1,430 |
| Branded training kit | £180 |
| Mobile phone, business share | £240 |
| Total expenses | £7,340 |
| Profit | £34,460 |
| Less personal allowance | £12,570 |
| Taxable profit | £21,890 |
| Income tax at 20% | £4,378.00 |
| Class 4 National Insurance at 6% | £1,313.40 |
| Total due | £5,691.40 |
All of this sits within the basic rate band, which runs to £50,270 of taxable income in 2026/27. Because the profit is well above the Small Profits Threshold of £7,105, Class 2 National Insurance is treated as paid at no cost, protecting the State Pension record without a payment.
| What you can claim | What to watch |
|---|---|
| Gym rent, licence fee or percentage paid to the venue for training your clients | A personal gym membership you use for your own workouts is not allowable. If one payment covers both, claim only the business part |
| Public liability and professional indemnity insurance | Personal income protection or life cover is not a business expense |
| CPD courses, workshops, and annual registration with a professional register | A course that keeps your existing qualification current is normally allowable. An initial qualification that gets you into the trade in the first place is generally not |
| Kettlebells, bands, mats, TRX, boxing pads, sled, scales, body composition tools | Larger or longer-lasting equipment is usually dealt with through capital allowances rather than as an everyday cost |
| First aid and CPR certification where a venue or insurer requires it | — |
| Client management apps, programming software, video hosting, a music licence for classes | — |
| Mileage to clients' homes, outdoor sessions and bootcamps at 55p a mile for the first 10,000 miles, 25p after | A regular commute to the same gym is usually not business travel. Travel between clients during the day is |
| Branded training kit, printed t-shirts, hoodies with your logo | Plain gym clothing is not allowable even if you only wear it to train clients |
| Park hire or pitch fees for outdoor bootcamps, local authority permits | — |
| Website, online booking, advertising, printed plans, client welcome packs | — |
Nutrition supplements you take yourself are not deductible. They keep you in shape, which is personal, however closely your physique relates to your bookings.
The percentage split, and whose customer the client is.
Gyms structure trainer arrangements in two quite different ways, and they look similar from the inside.
In the first, you are the one the client contracts with. They pay you, or they pay through the gym's system on your behalf, and the gym takes a cut. Your turnover is the full amount the client paid, and the cut is an expense. Say clients pay £52,000 in a year and the gym takes 35%. That is £18,200 to the gym and £33,800 into your account — but your turnover for tax purposes is £52,000.
In the second, the gym contracts with the client, sets the price and simply pays you a share for delivering the session. Your turnover is the share you actually receive.
That difference does not change your profit, but it changes the thresholds. At a turnover of £52,000 you are inside Making Tax Digital on the over-£50,000 test even though you banked £33,800. VAT registration is also measured on turnover, at £90,000 over a rolling 12 months.
Read the agreement and be sure which one you are in. If the gym issues you a self-billing invoice or a remittance, look at what it says the gross figure is.
Making Tax Digital for Income Tax replaces the single annual return with four quarterly updates in compatible software plus a final declaration. You are brought in on qualifying income — gross self-employment turnover plus gross property income, added together before expenses, on your previous year's return.
The trainer above, on £41,800 of fees, joins from 6 April 2027 on the over-£30,000 test. Employed gym-floor income does not count towards the figure, but rent from a property you let does.
Quarterly deadlines are 7 August, 7 November, 7 February and 7 May. Each update is cumulative, covering the tax year to date rather than an isolated quarter. The final declaration remains due 31 January. Missed deadlines earn one point each, with £200 charged at four points and for every miss after that.
Filing late costs £100 immediately even if you owe nothing, £10 a day after three months up to £900, then further charges at six and twelve months.
If you are employed by a gym on PAYE and have no private clients, you have no self-employment and probably no return to file.
If your self-employed fees are under £1,000 for the year, the trading allowance covers them.
If you are a single trainer with one income stream, gym rent, insurance and mileage, and you are happy with a spreadsheet, the free HMRC online return will do the job properly. Nothing on this page needs an accountant to apply it.
If you take block payments up front for packages that run into the next tax year, if you have started employing another trainer, or if you are weighing up whether to run the business through a limited company, those are the points where advice earns its fee — from us or from anyone qualified to give it.
No, not where it is for your own training. Rent or a licence fee paid so that you can train paying clients is deductible. If a single payment to the gym covers both, claim only the business share and be able to explain how you worked it out.
Generally not. An initial qualification that lets you enter the trade is usually treated as capital rather than an expense. Courses that keep an existing qualification up to date, and CPD on top of it, are normally allowable.
It depends on whose customer the client is. If the client is yours and the gym takes a cut, report the full amount the client paid and claim the cut as an expense. If the gym contracts with the client and pays you a share, report the share you receive.
No. Anything consumed by you is a personal cost, however much your own condition helps you sell sessions. Supplements you buy and resell to clients are different — the sale is turnover and the purchase is a cost.
Only branded or genuinely protective items. Plain leggings, trainers and t-shirts are ordinary clothing and are not allowable even if you wear them for nothing else.
This is one to get right rather than guess, because it can move income between tax years and across a threshold. The treatment depends on the basis you use for your accounts, so say so plainly on your records and ask before you file rather than after.
Filed Tax files Self Assessment and Making Tax Digital returns for personal trainers, including trainers on gym rent or a percentage split. £25 a month covers all four quarterly updates, the final declaration, unlimited questions and deadline reminders, and the first month is free. Rob Webb reviews every return before it is filed. Call 020 3637 6060.
Rob is a Certified Xero Advisor with a BSc from the University of Salford. Last reviewed September 2026 against GOV.UK guidance current at that date. This guide is general information, not personal tax advice. Figures are for the 2026/27 tax year and can change at each Budget — always confirm the current numbers on GOV.UK or ask us to check your situation.