How to find your restaurant's break-even point

A busy Saturday is not proof the restaurant works. Proof is knowing the sales number that covers every fixed bill, and seeing whether today cleared it.

That number is the break-even point. Most owners feel it. Few can write it on a napkin.

The definition

break-even sales = fixed costs ÷ contribution margin ratio

Fixed costs do not move with the next order: rent, salaried managers, insurance, software, most utilities, loan payments, a base marketing retainer.

Contribution margin is what each unit of sales leaves after the costs that do move: food, packaging, delivery commission, hourly labour you only roster when you are open, payment fees.

contribution margin ratio = (net sales − variable costs) ÷ net sales

A monthly example:

Last month you were 300,000 above break-even. That is the profit engine. If next month sales fall to 580,000, you are not “a bit slow”. You are below water.

Daily is the version you will actually use

daily break-even = monthly break-even ÷ days open

600,000 ÷ 26 open days ≈ 23,100 a day.

Put that number on the pass, or on the manager’s morning screen. By 8 pm you know whether the day needs a push (a last sitting, a delivery push, a late-night offer) or whether you should stop spending on the problem.

Two ways the number lies

1. Calling everything variable. If you treat salaried chefs as variable, break-even looks easy and then rent day arrives. If you treat every waiter as fixed, break-even looks impossible and you never open a Tuesday.
2. Ignoring delivery commission. A 30% aggregator fee is a variable cost. A month that is 40% delivery has a thinner contribution margin than a month that is 40% dine-in. Recalculate when the mix changes.

What to do when break-even is too high

You have three levers. Marketing is the slowest.

1. Raise contribution margin. Re-price two high-volume dishes, drop a loss-leader, cut packaging, or pull volume off the most expensive aggregator.
2. Cut fixed cost. One unused storage room, a software stack you do not open, a salaried role whose work is four hours a day.
3. Add volume that does not add fixed cost. Lunch that uses the same kitchen, a takeaway window, catering on the closed day.

Do not hire for a sales target you have not hit. That raises the break-even you are trying to clear.

A two-week exercise

• Week 1: Split last month’s costs into fixed and variable. Be strict. Calculate the ratio and the monthly and daily numbers.
• Week 2: Write the daily number on the board. Track actual net sales against it each night. On the two weakest weekdays, change one thing: hours, a section, or the delivery mix.

When sales, recipes, hourly attendance and expenses live in one place — as they do in GoSufra — the contribution margin is not a rebuild in a spreadsheet. The daily target can sit next to today’s sales instead of in a file you open on the first of the month.

The restaurants that last are not the busiest. They are the ones that know, by dinner, whether the day already paid the rent.