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The Retail Gap Calculator

Top-performing spas earn 15-25% of revenue from retail, the average sits at 5-10%. See exactly where your spa stands, and what closing that gap could be worth.

5-10 percent average spa versus 15-25 percent top-performing spa

The Opportunity

Why This Gap Is Worth Closing

Retail sits inside a genuinely large UK market, and most spas are only capturing a fraction of what the top performers achieve.

£7.9bn

The size of the UK health and wellness spa industry, and the scale of the retail opportunity sitting inside it.

48% of spas

Report that retail already makes up 10% or more of their total revenue.

15-25% vs 5-10%

What top-performing spas earn from retail, compared with the average. The gap is the opportunity.

Sources: IBISWorld UK Health and Wellness Spas Industry Report; International Spa Association (ISPA) Spa Success Survey; Zenoti 2025/2026 Beauty and Wellness Benchmark Report

The Calculator

What could this be worth to your spa?

Enter your numbers below to see exactly where you stand against the top-performer benchmark, and what closing that gap could be worth in real terms.



Your Numbers

Based on the 15-25% top-performer benchmark from Zenoti’s 2025/2026 Beauty and Wellness Benchmark Report. An indicative guide, not a guarantee.

Talk Through Your Numbers

Want the Full Picture?

Why this gap exists, and how to close it

This calculator is built from The Spa Director’s Guide to Retail Conversion, which covers why most spas underperform on retail, how Anne Semonin and marocMaroc solve it in two different ways, and a step-by-step audit for your own menu.

Read the Full Guide

Frequently Asked Questions

How is the Retail Gap Calculator worked out?

It compares your monthly retail revenue against your monthly treatment revenue, then measures that percentage against the 15-25% range top-performing spas achieve, based on Zenoti’s 2025/2026 Beauty and Wellness Benchmark Report. It’s a straightforward percentage comparison, not a complex model.

What counts as retail revenue for this calculator?

Any product a guest buys at the spa, whether that’s an add-on at the till or a recommendation made during treatment. If your point-of-sale system separates retail from treatment revenue, that figure is what to use here.

Is the 15-25% benchmark realistic for every spa?

It’s realistic as a target, not a guarantee. The range comes from spas where retail is genuinely built into the treatment, brand mechanism, therapist training and incentive structure all lined up. A spa without those in place is unlikely to hit it purely by aiming for the number.

Is the Retail Gap Calculator free to use?

Yes, it’s a free tool, no sign-up or contact details required to see your result. If you’d like to talk through what the number means for your spa specifically, our team is happy to do that separately.

Speak To Our Team

Ready to close your retail gap?

Our team works directly with Spa Directors to assess where retail conversion is breaking down, and which brand mechanism would close that gap for your menu.

Book a Spa Consultation

A 20-minute call, no obligation and no sales pressure.