What Is a PT Revenue Gap? (And How to Calculate Yours)
The revenue gap is the difference between what you currently earn and what your time, pricing, and postcode could realistically deliver. Here is how to size it.
- 6 min read - By Aaron McCulloch, Founder of PT Intelligence
Most PTs measure their business one way: total income this month. That number tells you what you earned. It does not tell you what you could have earned with the same hours, the same clients, and the same gym floor.
The difference between those two numbers is your revenue gap.
The formula
A PT's revenue gap has three components:
Revenue gap = (Pricing gap) + (Utilisation gap) + (Capacity gap)
- Pricing gap: what you charge per session vs the market rate for your postcode and specialism.
- Utilisation gap: the % of your bookable PT hours that are actually billed.
- Capacity gap: the bookable hours you could be offering but aren't (because your week isn't structured for client work).
You can have a £20 / session pricing gap, a 35% utilisation gap, and a 6-hour capacity gap all at the same time. That's three layered problems — and most trainers only ever try to fix the first one.
Why utilisation is the silent killer
If you have 30 bookable PT hours in a week and only 18 of them are billed, your utilisation is 60%. That's normal for a self-employed trainer. It also means 40% of your earning capacity is being given away for free.
At a £45 session rate, 12 unfilled hours a week is £540 of weekly revenue, or roughly £28,000 a year — and that's just the utilisation gap. Pricing and capacity are extra.
A worked example
Trainer in M3 (Manchester city centre), generalist, currently charging £40 / session, sessions 22 hours a week:
| Component | Current | Realistic | Gap |
|---|---|---|---|
| Session rate | £40 | £52 | £12 |
| Sessions / week | 22 | 30 | 8 |
| Weekly revenue | £880 | £1,560 | £680 |
| Monthly revenue | £3,520 | £6,240 | £2,720 |
£2,720 / month — that's a fairly typical revenue gap for a PT who's been on the gym floor for 18 months and never restructured their pricing or their week.
How to calculate yours
You need four numbers:
- Your current average session rate (be honest — include discounts).
- Your current weekly billed hours, averaged over the last 4 weeks.
- The recommended rate for your postcode and specialism (a revenue gap calculator handles this).
- Your realistic billable capacity — most PTs cap out around 28 – 32 sessions / week before quality drops.
Plug them in. The number you get is what's available to you with no new clients, no new gym, no new qualifications — just better pricing and better use of the week you already have.
What to do once you've quantified it
- Gaps under £500 / month: not worth a structural change, just tighten pricing and follow-up.
- £500 – £1,500 / month: pricing + a simple package offer almost always closes most of it.
- £1,500 / month and above: the issue is structural — either capacity, lead flow, or both — and needs a 90-day plan rather than a quick fix.
You can't fix a gap you can't see. That's the whole point of measuring it.
Frequently asked questions
What is a PT revenue gap?
A PT revenue gap is the difference between what a trainer currently earns and what the same hours, clients and gym floor could realistically deliver. It has three components: pricing gap, utilisation gap and capacity gap.
How do you calculate a personal trainer revenue gap?
You need four numbers: your current average session rate (including discounts), your current weekly billed hours averaged over the last four weeks, the recommended rate for your postcode and specialism, and your realistic billable capacity, which for most PTs caps out at around 28 to 32 sessions per week.
Why is utilisation the biggest hidden revenue gap for PTs?
If a trainer has 30 bookable hours a week but only bills 18, utilisation is 60% and 40% of earning capacity is effectively given away. At a £45 session rate, 12 unfilled hours a week is roughly £28,000 of missed revenue per year before pricing and capacity gaps are counted.
How large does a revenue gap need to be before it is worth fixing?
Gaps under £500 per month usually only need tighter pricing and follow-up. Between £500 and £1,500 per month, adjusting pricing and adding a simple package offer typically closes most of it. Gaps above £1,500 per month are structural and need a 90-day plan covering capacity and lead flow.