Why Most Personal Trainers Undercharge (and How to Stop)

Almost every PT we've benchmarked is charging less than they should. Not by a little — usually by £8 – £20 per session. Multiplied across a year, that's a five-figure pay cut they didn't agree to.

The reasons are structural, not personal. Here they are.

1. The gym noticeboard problem

Most PTs price by looking at what other PTs in their gym charge. The newest, least busy trainers usually have the lowest prices — and they become everyone else's reference point. You end up benchmarking against the worst performer on the floor.

2. The "I'm not worth that" instinct

Almost every PT raising rates has the same hesitation: "Am I really worth £55?" The honest answer is that the market doesn't price you on what you think you're worth — it prices you on outcome, reliability, and scarcity. If your clients keep showing up, you're already worth the higher number.

3. The discount habit

"First session free." "Two for the price of one." "£30 instead of £45 if you book six." Discounts are how most PTs build a book. They're also how most PTs lock themselves into permanently low rates — because every existing client expects to keep the discount forever.

4. No structured packages

Single-session pricing forces clients to keep re-deciding whether they value PT. Most don't. Packages remove the weekly decision, raise the per-month revenue, and make rate rises easier — because the next pack just costs more.

5. Charging by the hour

An hour is a unit of your time. Clients don't buy time, they buy outcomes. The PTs charging the most don't sell hours — they sell 12-week transformations, monthly retainers, or outcome-based blocks. Same work, different framing, 30 – 50% higher revenue.

A script for raising rates on existing clients

Most PTs avoid this conversation. Here is a version that works:

"Quick heads up — from [date six weeks away] I'm moving my session rate to £[new]. You'll keep your current rate for any sessions you've already paid for, and the new rate applies to packs after that. Wanted to give you plenty of notice so you can grab another pack at the old rate if you'd like."

Three things to copy from that:

• Six weeks of notice. Long enough that no one feels ambushed.
• Old rate honoured for what's already paid. No retroactive pricing.
• A reason to act now. The mention of the old rate triggers most clients to buy one more pack — which usually covers the entire revenue dip from anyone who leaves.

What usually happens

In our experience, 0 – 10% of clients leave on a fair rate rise. The remaining 90% don't even comment. The trainers who put it off for a year and then raise rates by £15 in one go are the ones who lose clients — not the trainers who raise £5 – £8 once every 12 – 18 months.

If you want to see exactly what your postcode and specialism support, run your numbers through the calculator — it tells you the gap before you have the conversation.