Most salons run on gut feeling. The till feels busy, the diary looks full, things are probably fine. Then the accountant calls in January with figures that don't match how the year felt, and by then you've lost twelve months where you could've done something about it.

A handful of numbers are worth checking every week, and it only takes about fifteen minutes on a Monday morning to catch problems while they're still small.

Average spend per client

Take your total takings, divide by the number of clients, and write it down each week.

This number catches things you'd never notice otherwise: the team stops mentioning treatments, you've been a bit generous with discounts, or clients quietly switch from full colours to half heads. None of these show up as a single obvious problem, but the average spend drifts down and that's your early warning.

One week means nothing, but three weeks heading the same direction means something changed.

Chair occupancy

Four stylists, eight hours each, five days. That's 160 hours of chair time a week. How many have someone in them?

75-80% is healthy. Drop below 65% and you're paying for a lot of empty chairs; go above 85% and you're turning people away.

Knowing the actual gaps means you can do something specific, like running an offer for Tuesday 2-5pm instead of vaguely discounting because "Tuesdays are quiet."

Client return rate

Look at everyone who came in six months ago. What percentage came back?

A salon can feel busy with lots of new faces while losing existing clients at the same rate. You end up working hard just to stand still.

Above 70% is fine, and above 80% is good, but below 60% you've got a leak worth finding because getting someone back is much easier than finding someone new.

Retail percentage

Retail divided by total revenue. Most salons sit around 3-4%, while the ones doing well are at 10-15%.

This matters because the margins are completely different: a £22 conditioner is almost pure profit, whereas £22 on a colour service has to cover wages, products, chair time, and everything else.

Low retail usually comes down to whether anyone mentions the products. Using something on a client's hair and hoping they ask isn't selling.

Individual performance

Nobody wants a competitive league table, but if you don't know who's bringing in what, you can't spot when someone needs help or when someone's figured something out worth sharing.

Sometimes the reason for low numbers is obvious: part-time, newer, specialises in longer services. But sometimes there are gaps in a column that could be fixed, or certain clients always being funnelled to one person, and you only see these patterns when you look at the figures.

No-show rate

Take your missed appointments divided by total appointments. Under 5% is just life, but above 10% it costs real money: 200 appointments a month at 10% no-shows means 20 empty slots, and at £45 average that's £900 a month, nearly £11,000 a year.

Text reminders help because people actually read texts, and online deposits collected by card at the point of booking help even more because a client who's paid £30 upfront doesn't just not show up. Oddly, making cancellation easy helps too, since some no-shows are people who wanted to cancel but felt awkward calling. Give them a link and at least you get notice.

What doesn't matter

Instagram followers, for a start, because 800 locals who actually book beats 12,000 scattered followers who never will.

New client numbers on their own don't mean much either, because fifty who come once is worse than twenty who keep coming back.

And total revenue without context is misleading. Your biggest week might barely turn a profit if costs were high that week too.

The numbers worth watching are the ones that tell you what's changing, so you can act on it before your accountant has to deliver the bad news.