Busy, profitable, and short at the end of the month

There's a particular kind of bad week that catches owners off guard. The order book is full, the last quarter was the strongest yet, and there isn't enough in the account to cover wages on Thursday. It feels like a mistake in the bookkeeping, and it usually isn't.

Profit and cash answer 2 different questions, and a business can pass 1 while failing the other for months. Understanding the gap between them is 1 of the money-block jobs in the guide to working on the business rather than in it, and it's the one that most often decides whether a good business survives a busy year.

Profit answers 1 question, cash answers another

Profit asks whether the work was worth doing. Revenue earned, minus what it cost to earn, over a defined period. It doesn't care when anybody actually paid.

Cash asks whether you can meet what falls due this week. It doesn't care whether the underlying job was any good.

The 2 measures diverge because the accounting recognises a sale when you invoice it and the bank recognises it when the money lands. Between those 2 moments sits your entire problem: you've paid the wages, bought the materials, burnt the fuel and booked the profit, and the money is still in somebody else's account.

That's why "check the bank balance" is a poor management habit. The balance tells you what's there today, with no view of the 3 supplier payments and the wage run sitting in the next 10 days. Owners who manage from the balance are always reacting, and always slightly too late.

The gap, in plain terms

Every service business runs a cycle: you spend money to deliver work, then wait to be paid for it. The length of that wait, multiplied by the money going out during it, is the amount of cash the business has to carry at all times.

4 things set the length.

• How long the work takes to finish. Work in progress that isn't yet invoiced is money you've spent with nothing issued against it.
• How quickly you invoice after finishing. The most common self-inflicted delay in small business, and the cheapest to fix.
• How long customers take to pay. Not your stated terms. What they actually do.
• How quickly you pay out. Wages weekly or fortnightly, materials on account, subcontractors on their own terms.

When money leaves faster than it arrives, the difference has to come from somewhere: retained cash, an overdraft, or the owner's own pocket.

An illustration with round numbers, not a real business. A business invoices $100,000 in a month at a 35% gross margin. It pays out $65,000 in wages, materials and subcontractors within about 21 days of the work being done. Its customers pay at an average of 52 days. Every month, roughly a month of delivery cost goes out before the matching money comes in. Nothing in that business is broken, and it still needs a substantial cash buffer just to stand still. All figures ex GST.

Why growth makes it worse

This is the part that surprises owners most, because it runs opposite to instinct: a business is at its most fragile in a good quarter.

Growth means more jobs, which means more wages and materials going out before more invoices come in. The faster it grows, the larger the funding gap becomes. Every additional job is a small loan the business makes to its customer, and a growing business writes more of them each month.

A shrinking business often looks flush for a while, for the same reason in reverse. Money keeps arriving from work already done while new spending drops away. That's a temporary comfort and a genuinely dangerous signal to read as health.

There's a related trap. Margin can be excellent and cash can still be terrible, because margin says nothing about timing. Working out margin by job type is a separate exercise, covered in gross margin explained for business owners, and a business needs both readings to see itself clearly.

The 6 levers that actually move cash

Most cash problems in a small business are fixed by unremarkable operational changes, applied consistently.

1. Set terms before the work starts, in writing. Deposit, progress points, final payment, and the window. Terms agreed at quote stage are a normal part of the deal. Terms introduced afterwards are a negotiation you'll lose.
2. Take a deposit on anything with materials in it. If the business is buying stock for a customer's job, the customer funds it. This single change removes a large share of the funding gap on project work.
3. Invoice the day the work finishes. Not at month end. A week of administrative delay is a week of cash the business has lent out for nothing.
4. Have a follow-up rhythm, not a mood. A short reminder before the due date, a call on the day, another at 7 days. Same sequence for everybody, so it isn't personal and you don't have to decide each time.
5. Make paying easy. Bank details on every invoice, a card option, and a clear amount. Friction at the payment step costs more than the merchant fee does.
6. Look at your own outgoings. Supplier terms, subscription creep, and stock sitting on a shelf that could be ordered per job. Small recurring outflows matter more to cash than they do to profit.

Pricing sits underneath all 6 of them. A business with thin margins has no room to absorb a slow payer, which is why how to price your services is usually the first job rather than a later one.

If it's tight right now

Short-term pressure needs a different sequence from long-term repair.

Get visibility first. List every payment due in the next 13 weeks and every receipt you reasonably expect, week by week. Until that exists you're guessing, and guessing under pressure produces the worst decisions of the year. How to build a 13-week cash flow forecast sets out how to put it together in about 2 hours.

Then work the list in order: collect what's already owed, invoice anything finished and unbilled, and talk early to anybody you'll be late paying. Early conversations preserve relationships. Silence destroys them.

Your registered tax agent handles tax. A coach works on what the business does to make the money in the first place: what you charge, how quickly it's invoiced, and how the work is delivered. If the business genuinely cannot meet its obligations as they fall due, that's the point to speak to your accountant and a qualified professional straight away rather than trading through it.

The habit that stops it coming back

Cash discipline is a weekly routine, not a project.

Once a week, same slot, update the forecast and read 3 figures: cash on hand, money owed to you and how old it is, and money you owe and when it falls due. That's 20 minutes, and it converts cash from something that happens to the business into something the owner is watching.

Those 3 belong on the short list of figures you can quote without opening anything, alongside margin and the rest. The numbers every owner should know covers what else earns a place on it.

The owners who never have the Thursday problem aren't the ones with the strongest margins. They're the ones who looked 13 weeks ahead, every week, long before there was a reason to.