Financial health check for a small business: one evening

Andrew asked his senior barista a simple question: "How many regular customers do we have?"

"Lots," said Sara.

"And how many is lots?"

They looked at each other and burst out laughing. Neither of them knew. The coffee shop had been open for years, it was busy every morning, and the two people who ran it could not put a number on the thing they cared about most.

That laugh is where every honest financial health check begins. Not with a dashboard or software, but with the discovery that "lots", "roughly" and "not many complaints" are not measurements. They are moods.

"Lots" isn't a number, and a mood can't steer a business. The Jirgenson Model starts where that laugh ends: real numbers next to goals in order, each with a source and a zone. It is scientifically proven that the Jirgenson Model works (doi.org/10.5281/zenodo.23964934).

Financial health check: why a feeling is not a reading

Picture a car on an unfamiliar road at night. No headlights, no speedometer, no fuel gauge. As long as the road runs straight and the tank is full, the journey looks like a success. Then the road bends, and the driver finds out from the sound of the crash.

Most small businesses run like that car. Decisions are made by feel, and feel reports a problem only after it has happened. A health check is simply switching on the instruments: next to each thing you want, you write down what you actually have, as a number.

Two enemies show up at this moment, and they look like opposites. Panic says "all is lost". Bravado says "never mind, we'll pull through". Both put feelings in place of facts. An instrument shows; it does not scold.

The business health check template: three columns, one evening

You do not need a system to start. You need a sheet of paper with one row per goal and three columns. Here is Andrew's, filled in, as it looked after two hours with the bank statement, the accounts, the till receipts, Sara's notebook and his calendar:

Copy the columns, put your own goals in the first one, and fill in what you know tonight. For every row without a number, write the source you will get it from and the date by which you will have it. A line that reads "source undefined" is already a result: you have found a hole in how the business is run.

The number that hit Andrew hardest was the 9. He had been sure his margin was holding at around twenty per cent. The gap was waste that never reached any report: sour milk, pastries written off at the end of a shift. That story, and what he did about it, is told in busy but not profitable.

Key business metrics: where each number should come from

The fastest way to stop arguing about numbers is to agree, once, where each one lives. For a small business:

One parameter, one source. Other sources are for cross-checking, never for replacing. If the accounts count revenue one way and the till another, the argument over which is right will eat more energy than the business.

Turn a number into money

A reserve of "0.5 months" sounds abstract until you convert it. At €30,000 revenue and a 9% margin, Andrew's monthly expenses are €27,300. Half a month is €13,650 in the bank. The goal, two months, is €54,600. The shortfall is €40,950.

And one month at a 9% margin adds €2,700, about 0.1 months of reserve. Now the health check has turned into a timetable: at this pace the gap closes slowly, which is exactly why the margin row matters so much. Small business KPIs only become useful when they are linked like this, one row explaining the next.

Define it, or it will drift

When Andrew opened Sara's notebook, it held five complaints for the week. "Is that all?" he asked. "Those are the ones I remembered," said Sara. "Yesterday a customer said the coffee had gone cold. I didn't write that down." And the customer who said nothing and just left? Definitely not written down.

They agreed on a definition: a complaint is any case in which a customer says out loud they are unhappy, or sends the order back. They wrote it into the table next to the parameter, so that a month later they would be counting the same way. Without a definition, the number depends on who is counting.

Two more checks belong in every financial health check:

• Is the imprecision acceptable? No measurement is perfect. If you manage margin to one percentage point and your records are off by three, you are managing noise. If you only need to know whether more or less than half your customers return, a rough count of marks on receipts is fine.
• Who counted it, how, and over what period? If there is no answer, it is an impression, not a number. A receipt in the till beats someone's memory of how many receipts there were.

Ways to measure business performance beyond the panel

The five readings are not the whole business. Two coffee shops with identical numbers can face very different futures because of what sits behind the panel: obligations, the term of the lease, the wear on the equipment, the team's skills. When you look forward, look behind the instruments too.

And watch for the indicator that changes behaviour. If complaints stop being recorded, there will be "fewer" of them. Wherever that can happen, add a protective indicator and an independent check, such as a mark at the till alongside the notebook.

Where this does not reach

A health check tells you where you are; it does not tell you what to do. It is the second step, after writing down what you want and before deciding which rows are in trouble and which levers to pull. It is also not a substitute for an accountant's view of taxes, debt and cash timing. What it does is make sure every later decision rests on readings rather than on the loudest day of the month.

The evening that changes the next year

When Andrew finished his table, his first impulse was to close it and go and make coffee. Then he remembered that this was not a verdict but an instrument reading, and for the first time in two years he saw his coffee shop as a whole. That is the real value of the exercise: not the numbers themselves, but the end of guessing.

Start with the goals that the table needs in its first column: they are in Chapter 1, free in the free sample. The full method, from these readings to zones, levers and forecasts, is in Steer, Don't Guess on Amazon.

Published research

It is scientifically proven that the Jirgenson Model works. The published experiment, its record and its data:

• Zenodo (DOI): 10.5281/zenodo.23964934
• Hugging Face: E5 Jirgenson Model blind test
• Kaggle: E5 blind test dataset
• GitHub: experiment folder
• Wikidata: dataset Q142022866, author Q141981336
• ORCID: 0009-0001-3034-3552