How do I calculate labour cost percentage?

Divide total labour cost by net sales for the same period, then multiply by 100. Total labour cost means gross wages plus employer National Insurance, pension contributions and any agency spend, not just the hourly rate on the rota.

Should labour percentage include the owner's wage?

Include it if the owner works shifts the business would otherwise have to staff. Leaving an owner-operator out of the figure makes the café look more efficient than it is, and hides the real cost of covering that person's days off.

What is prime cost and why does it matter more?

Prime cost is cost of goods plus total labour, as a share of net sales. It matters more than either figure alone because the two trade off against each other: fresh, made-on-site food raises labour and lowers packaged stock cost.

Is a low labour percentage always good?

No. Very low labour usually means slow service, tired staff and turnover, all of which cost more than the wage saved. The number to watch is whether sales per labour hour is holding while the percentage falls.

How often should I check the figure?

Weekly, against the rota you are about to publish. Checking monthly tells you what happened; checking weekly lets you move a shift before it is worked.

Café labour cost percentage: what good looks like

Quick answer. Labour cost percentage is total labour cost divided by net sales. For a UK café, published trade figures generally put labour somewhere in the high twenties to mid thirties percent of net sales, with prime cost, labour plus cost of goods, running around the low sixties. Where you should sit inside that depends on how much you make on site and how long you open.

The figure is only useful if you calculate it the same way every week and read it next to sales per labour hour. On its own, a falling labour percentage can mean better scheduling or a shop that has quietly become unpleasant to work in.

What counts as labour cost

Most cafés undercount this. The rota shows hourly rates; the real cost includes everything the business pays to have that person there:

gross wages for all staff, including salaried managers
employer National Insurance contributions
employer pension contributions
holiday pay accrual
agency or cover spend
the owner's own wage, if they work shifts

Leave out employer NI and pension and the figure comes in several points low, which is exactly the sort of error that makes a café think it has room to add a shift.

Net sales, not total income

Labour is measured against net sales, meaning sales excluding VAT. Total income might also include a grant, a one-off equipment sale or interest, and none of that supports a rota.

Mixing the two is the second common error. A month with a one-off payment in it will show a flattering labour percentage that nothing about the operation earned.

Reading the number properly

Three figures together tell you more than any one of them:

Labour cost percentage tells you what share of sales goes on staff. It moves with both wages and trade, so a bad week for footfall pushes it up without anyone changing the rota.

Sales per labour hour tells you what each rostered hour brings in. This is the figure to watch when you cut hours: if labour percentage falls and sales per labour hour falls with it, you have cut into service, not waste.

Prime cost tells you whether the two big controllable lines are in balance. A café that bakes on site will show higher labour and lower goods cost than one that buys in finished pastries. Judging the labour line alone would call the first café inefficient when its prime cost may be better.

Why the percentage drifts up

When labour percentage climbs without anyone deciding to spend more, the cause is usually one of these:

The rota is built on habit. Shifts stay where they were set months ago while trade patterns moved. A 07:00 open that made sense before the office next door emptied out now costs two quiet hours a day.
Overlaps at handover. Two people on shift for the same 45 minutes, five days a week, is roughly a full shift a week nobody planned.
Overtime absorbed quietly. Shifts that regularly run 20 minutes long do not show on the rota but do show on the payroll.
Cover bought at short notice. Agency hours and last-minute call-ins cost more per hour than the plan.
Staffing to the worst case. Rotas set for the busiest possible Saturday get worked on an average one.

Fixing a high labour percentage

The order matters. Cutting hours first is the crude move and usually the one that costs you a good barista.

Start with the shape of the day. Pull the hourly sales pattern for a normal week and lay the rota over it. Look for hours where staffing is flat and sales are not. Those are the hours to reshape, by starting one person later or ending one earlier, rather than removing a person entirely.

Then tighten handovers. Decide what actually has to happen with two people present and how long it takes. Fifteen minutes of genuine handover beats 45 minutes of drift.

Then look at the split between roles. A quiet mid-afternoon may not need a barista and a floor person; it may need one person who can do both. This is a training question as much as a rota question.

Then check actual against planned. If clock-in data shows shifts consistently running over, the plan is wrong, not the staff. Move the shift end to where the work actually finishes and account for it.

Only then consider fewer hours. By this point you know which hours earn their keep, and the cut lands on the ones that do not.

Track it weekly, before you publish

The useful moment for this figure is before the rota goes out, not after payroll. A forecast that shows the coming week's labour cost against expected sales lets you move one shift and watch the number change.

Wavro does this on the rota screen: hours, cost and the labour percentage update as you build the week, and the company costs page compares your café against published UK bands so you can see where you actually sit. Every band in the app cites a source, and a trade without a citable figure shows as no published band rather than an invented one.

Figures quoted here describe published UK trade bands in general terms. Your own targets depend on your rent, menu, opening hours and how much you make on site.