Measuring gym member lifetime value settles every spending argument

Aug 27
3 min read

Updated: 2 days ago

Introduction

Every marketing decision a gym makes depends on one number that most operators have never calculated: what a member is actually worth.

Without it, acquisition spend is a guess, retention effort has no measurable value, and the argument about whether to run a discount promotion cannot be resolved with anything except opinion.

1. Measuring gym member lifetime value starts with average tenure

The monthly fee is easy. The length of stay is the number nobody knows.

Take members who joined eighteen months to two years ago and work out how long they lasted on average. Use actual historical cohorts rather than an estimate, because intuition in this sector is consistently optimistic.

2. Multiply by the fee they actually paid, not the headline rate

Discounts, joining offers, off-peak tiers and corporate rates all reduce the real figure.

Use the average revenue per member per month from your accounts rather than the price on the wall. The gap between those two numbers is frequently larger than expected and it changes the whole calculation.

3. Add the secondary spend

Personal training, classes outside the membership, guest fees, retail, and anything else members buy.

For many gyms this is a meaningful addition, and it is disproportionately generated by the longest-standing members — which is itself an argument for retention over acquisition.

Add referrals too, if you can attribute them. A member who introduces two others over three years is worth considerably more than their own subscription, and excluding that understates exactly the members you most want to keep.

4. Calculate it by segment, not as one figure

A single blended number conceals the useful information.

Off-peak against full membership, contract against rolling, referred against promotionally acquired, January joiners against the rest. The variation between those segments is usually large, and it tells you which kinds of member are worth pursuing.

5. Compare it with what acquisition currently costs

Total marketing spend divided by members gained, over the same period.

If a member is worth several times what one costs to acquire, you should probably be spending more. If the two numbers are close, the problem is retention and additional spend will not fix it. That comparison is the entire point of the exercise.

6. Use it to value retention work properly

Retention improvements are hard to justify because the benefit is diffuse. Lifetime value makes it concrete.

Work out what one additional month of average tenure across your whole membership is worth annually. That figure typically dwarfs the cost of better onboarding or a lapsing-attendance process, and it is the argument that gets those things resourced.

7. Watch what promotions do to it

A discount that increases signups and reduces average tenure can lower total member value while looking successful.

Track the lifetime value of promotionally acquired cohorts separately. Heavy discounting frequently produces members worth a fraction of full-price joiners, which means the promotion was buying volume at a loss.

8. Recalculate it annually, and treat it as directional

It is an estimate, not an accounting figure.

Tenure changes, pricing changes, the membership mix changes. An annual recalculation keeps it useful. Precision matters far less than having a defensible number that everyone in the business is working from.

9. Put it on the same page as churn and acquisition cost

Three numbers together tell the whole story.

Lifetime value, cost per acquisition, and churn. Any decision about spending, pricing or promotions can be assessed against those three, and most disagreements about gym marketing dissolve once they are written down.

Conclusion

Calculate average tenure from real historical cohorts, because that is the number nobody knows and everything depends on.

Multiply by actual average revenue per member rather than the headline rate, add secondary spend, break it down by segment, compare it directly with your cost per acquisition, use it to put a value on retention work, track it separately for promotionally acquired members, recalculate annually as a directional figure, and keep it alongside churn and acquisition cost on one page.