Self-Employed Personal Trainer Tax Guide UK 2025/26

Personal training is booming — and most PTs are self-employed. But between gym rent, equipment, online coaching, and mixed income streams, the tax side can get complicated. This guide covers exactly what you need to know.

Employed or self-employed?

Many gyms use self-employed PTs, but HMRC looks at the reality — not the label. You're likely self-employed if you:

• Set your own hours and schedule
• Set your own prices
• Find your own clients
• Can send someone else to cover sessions
• Provide your own equipment
• Work at multiple gyms or locations
• Risk your own money (no clients = no income)

You're likely employed if the gym:

• Sets your schedule and assigns clients
• Pays you a salary or fixed hourly rate
• Provides all equipment
• Controls how you deliver sessions

Registering with HMRC

Register for Self Assessment within 3 months of your first paid session. You'll get a UTR (Unique Taxpayer Reference) number — keep it safe, you'll need it every year.

If you're a PT alongside an employed job (gym instructor, class teacher), you still need to register and declare the self-employed income separately.

Allowable expenses for personal trainers

Equipment

• Resistance bands, kettlebells, dumbbells
• TRX/suspension trainers
• Exercise mats and foam rollers
• Boxing pads and gloves
• Stopwatches and timers
• Heart rate monitors (client-use)
• Portable equipment for outdoor/home sessions
• Body composition scales

Technology

• Tablet or phone (business-use proportion) — for programming, client tracking
• Fitness software (Trainerize, TrueCoach, PT Distinction)
• Nutrition tracking apps (premium versions)
• Booking and scheduling software
• Payment processing (SumUp, Square) — terminal costs and fees
• Zoom/video call subscription (for online coaching)

Business costs

• Public liability insurance (essential and deductible)
• Professional indemnity insurance
• REPs (Register of Exercise Professionals) membership
• CIMSPA registration
• Website and social media advertising
• Business cards, flyers, branded materials
• Accountancy fees
• DBS check (if required for certain clients)

Travel

• Mileage: 45p/mile for first 10,000, then 25p — to client homes, outdoor locations, different gyms
• Parking at client locations
• Note: daily commute to your regular gym is NOT claimable

Gym rent and facility fees

Similar to hairdresser chair rental — gym rent is one of your biggest expenses. Record it properly:

Common gym payment structures:

• Fixed monthly rent: You pay £X/month, keep all client fees. Simplest and most clearly self-employed.
• Percentage split: Gym takes 30-50% of session fees. Record your full fee as income, the gym's cut as an expense.
• Pay-per-session: Pay the gym £X per session used. Track each one.

Online coaching income

Online PT is growing fast. The tax treatment is the same — it's self-employment income — but the expenses differ:

• Platform costs: Monthly subscription to coaching platforms (Trainerize, TrueCoach, etc.)
• Content creation: Video equipment, editing software, screen recording tools
• Home office: If you coach from home, claim the home office deduction
• Digital products: If you sell workout plans or nutrition guides, production costs are deductible

Clothing and uniform rules

This catches PTs out every year:

• Branded clothing with your logo: ✅ Claimable
• Uniform required by the gym: ✅ Claimable (if you pay for it)
• Regular gym clothes (Nike trainers, leggings): ❌ NOT claimable — even if you only wear them for work
• Specialist footwear for a specific activity (e.g., weightlifting shoes for coaching): Arguable — but keep evidence of business use

Training and CPD

Continuing professional development is a big expense for PTs. Here's what's claimable:

• CPD courses that update existing skills: ✅ (e.g., advanced nutrition, pre/postnatal, sports massage add-on)
• Conference and seminar fees: ✅
• Travel and accommodation for courses: ✅
• Books and educational materials: ✅
• Initial Level 3 PT qualification: ❌ (this is training to START the business, not to maintain it)
• Completely new qualification (e.g., becoming a physiotherapist): ❌

VAT for personal trainers

VAT registration is required at £90,000 turnover. Most solo PTs are below this, but if you're earning £7,500+/month, monitor it carefully.

PT-specific VAT notes:

• Personal training sessions are standard-rated (20%)
• If you're VAT registered, gym rent (from a VAT-registered gym) will include VAT you can reclaim
• Digital products (online plans sold to consumers) have specific VAT rules — use a platform like Gumroad that handles this

Filing your tax return

Fill in the SA103 (Self Employment) alongside your main SA100:

• Box 14: Total turnover (all client payments + online coaching + product sales)
• Box 20: Total allowable expenses
• Box 27: Net profit

If you also have employed income (gym instructor salary), that goes on the main SA100. HMRC calculates your total tax across both.

Full walkthrough: Self-assessment guide

How to reduce your tax bill

1. Track every expense. PTs consistently under-claim. Equipment, insurance, mileage, software — it adds up to thousands. Use our Tax Tracker Spreadsheet to catch everything.
2. Claim mileage religiously. If you train clients at their homes, different gyms, or outdoor locations — log every journey at 45p/mile.
3. Pension contributions. Money into a SIPP reduces your taxable income pound-for-pound.
4. Set aside tax quarterly. Don't spend it. Move 25-30% of every payment into a separate tax pot immediately.
5. Time your purchases. Need new equipment? Buy before 5 April to reduce this year's bill.
6. Home office deduction. If you programme workouts, do admin, or coach online from home — claim it.

Summary

Area	Key point
Status	Ensure genuinely self-employed (not disguised employment)
Expenses	Equipment, gym rent, insurance, mileage, CPD, software
Clothing	Only branded/uniform — regular gym wear not claimable
Online income	Same tax treatment — different expense profile
CPD	Updating skills ✅ — initial qualification ❌
VAT	Register at £90k turnover