Why growing businesses run out of cash

A pattern I see often. A business has its best few months on record. Sales are up, the team is busy, the order book looks the part. Then payroll comes around and the account is tighter than it has any right to be. The numbers say the business is doing well. The bank balance says something else.

You may recognise some of it. Profit on the page, pressure in the account. It is one of the most common situations I see, and it is rarely a sign that anything is wrong with the business. It is usually a sign that cash and profit are two different things, and that the gap between them grows with you.

Here is what is actually happening, and what to do about it.

Profit and cash are not the same number

Your profit and loss statement records a sale the day you invoice it. The cash from that sale turns up 30, 60, sometimes 90 days later. In between, you have already paid for the work: wages, materials, supplier deposits, all out the door before the customer pays you in.

That distance, measured in days, is your cash conversion cycle. It is the time you fund the business out of your own pocket between doing the work and being paid for it.

Say you get paid 50 days after you invoice, you carry no stock, and you pay your own suppliers 20 days after they bill you. Your cash conversion cycle is 30 days. Every dollar of cost sits outside your bank account for a month before the matching revenue arrives. Add stock that sits on a shelf, and the gap gets longer again.

The report you trust every month cannot show it

This is the part that catches good operators out. Your P&L has no line for the gap. It tells you whether you made money, not whether you are holding it.

The balance sheet does hold the pieces. Your debtors, your stock and your creditors are all there. The catch is that they sit as dollar balances on a single day, never as time. $400,000 owed to you could be 35 days of sales or 80, and the balance sheet does not tell you which. It shows the amount tied up, never the duration.

Worse, that single day is usually the flattering one. Most businesses look at the balance sheet at month-end, which is often the moment cash looks its best: the month's debtors have come in, and the next payroll and supplier run have not yet gone out.

I worked with a business recently whose month-end balance looked healthy every time. On paper the cash was fine. In the third week of every month it ran short, because the outflows landed before the inflows. Real money, needed for real, even if only for a week or two. Nothing was wrong with the business. The reporting simply photographed the cash at its high point and missed the dip.

Growth makes the gap wider, not narrower

The instinct, when cash feels tight, is to sell harder. For a growing business that often makes it worse.

Every new sale carries its costs up front and pays you back later. So the more you sell, the more cash is trapped in the gap at any one time. Put rough numbers on it. A business adding $100,000 of revenue a month, at 60% input costs, with a 60-day gap, needs to find around $120,000 of permanent cash just to keep trading at the new level. That money buys no growth. It only lets the business stand still.

This is why a full order book does not save a company on its own. Order books do not pay wages. Cash does. The way through is not simply more revenue, it is more profitable revenue, because margin is what buys you the room to shorten the cycle: better terms, deposits, funding arranged from a position of strength rather than panic.

Three levers you actually control

The cash conversion cycle is not a fixed fact of your business. It has three dials, and you control all of them.

Get paid sooner. Tighter terms, deposits, milestone billing, and invoicing the day the work ships rather than at the end of the month. Invoicing faster alone can pull days out of the cycle.

Hold less stock. Order tighter and turn it faster, so cash is not sitting on a shelf waiting to be sold.

Pay suppliers later, without damaging the relationship. Use the terms you have actually been given rather than paying early out of habit.

Small moves on each compound into weeks of cash. The first step is simply to know your number. Most founders have never worked out their cycle in days, which means they are funding a cost they have never measured.

Watch cash weekly, not monthly

The mid-month business I mentioned had one thing missing: a forward view. Monthly accounts arrive weeks after the month has closed and look backwards. A cash problem in a growing business moves faster than that.

The fix is a 13-week cash forecast, updated weekly. It gives you a 90-day window at weekly resolution: long enough to do something about a shortfall, detailed enough to see it coming. Spot a pinch with ten weeks' notice and you can arrange funding or pull a payment forward calmly. Spot it on the day, and you are negotiating from weakness. The value is in the routine of updating it, because that is what surfaces the problem while it is still small.

Where this leaves you

If any of this feels familiar, the busy months that do not show up in the account, the cash that is tighter than the profit suggests, it is worth getting clear on three things: your cash conversion cycle in days, what a month of growth costs you in cash, and where your balance actually sits mid-month rather than at month-end.

I run myCFO, a fractional CFO practice for growth businesses. If you would like to talk any of this through for your own business, I am happy to.

No pitch, just a straight conversation about where your cash really is.

You can get in touch through the site.