The cash trap: why your best growth month left you short of cash

You have had a strong month. Revenue is up, turnover is running at £5m with double-digit monthly growth, and there is a moment of relief and recognition. You also know you have to go faster still to hit the Series A or the exit target.

Then you look at the cash position and something does not add up. Cash is tight — tighter than normal, with spending increasing. In most cases this is not a dramatic crisis, provided it is managed. It is something more unsettling than that: a quiet gap between what the numbers say and what the bank confirms. The business is not failing. It is succeeding faster than its infrastructure can manage.

This is the growth cash trap, and it tends to arrive at the moment founders least expect it.

What the trap actually is

The growth cash trap is not bad accounting. It is the gap between what your P&L reports and what your cash position reflects. Instead of free cash flow, more and more cash is committed.

You invoice a client and recognise the revenue. The P&L looks healthy. The client pays on 60-day terms, while your team, your suppliers, your growth costs and your taxes all have to be paid this month. The cash is out and the inflow is still weeks away — tied up in projects, stock, trade debtors, and invoices that have not gone out on time. You may also have omitted to hold something back for last year’s corporation tax payment.

The rate varies by industry. At modest growth the gap is manageable. At 10% month on month it compounds, and you have to fix it while running at full tilt. Every new employee, recruitment fee, client, contract and supplier relationship widens the distance between reported profitability and actual liquidity. The faster you grow, the more working capital that growth requires — and if the reporting is not tracking it clearly, the gap becomes a problem before anyone has noticed it building. You are winning new work, employing new people, focusing on standards and trying to fix a few processes. You cannot be into everything.

Why capable founders get caught

Most early-stage finance functions are built for compliance, not decision-making. That is a reasonable prioritisation at an earlier stage: keep the accounts clean, satisfy HMRC, produce the annual numbers. It is enough that your trusted head of finance or your tax accountants can cover it — until it is not.

The problem is that compliance-focused reporting is retrospective by design. Management accounts that arrive three weeks after month end, at best, describe what happened rather than what is coming. By the time they land, the decisions they should have informed have usually already been made. You do not drive a car by looking in the rear-view mirror, and that is what a compliance-led approach asks of your business.

There is also a natural tendency in a growth business to watch the revenue line. Revenue is visible, motivating and easy to report. Bookings data is better still, because it tells you what is happening in real time, before the accountants make the revenue line less comprehensible. Cash runway is less glamorous, harder to model and easier to defer to next month’s review — until the two stop moving together.

None of this reflects poorly on the founders caught by it. It reflects the reality that fast-growing businesses make intelligent trade-offs about where to invest their management attention, and finance infrastructure is rarely the first call on that attention when everything else is growing.

Start with the forecast, not the system

The shift that matters is not from bad finance to good finance. It is from finance that records the past to finance that anticipates the future. If you do one thing first, make it the rolling cash flow forecast.

Not a model built once and filed. A working document, updated as regularly as the business needs, that reflects actual payment timing, pipeline probabilities and committed costs. It should draw on operational insight as much as finance: sales pacing, inventory turnover, project deliveries, alongside the outcomes of working capital management. The test is straightforward. On a given Tuesday, can it tell you what the cash position is likely to look like in eight weeks? If it cannot, it is a spreadsheet rather than a forecast.

This has become considerably less onerous than it once was. Machine learning makes these models quicker to update and to sensitise, which removes the old objection that maintaining one costs more time than it saves.

A forecast on its own will not close the gap. It will make the gap visible early enough to do something about it, which is the difference between a working capital conversation and a funding emergency.

What comes next

The forecast is the first move, not the whole transition. How quickly management accounts have to land to be a management tool rather than a history lesson; what financial leadership actually looks like in a scaling business, and why a finance function that says ‘no’ rather than ‘here is how’ is the wrong shape; what a board pack has to show about forward liquidity beyond revenue and EBITDA; and why fractional CFO appointments so often produce a different version of the same problem — all of that is set out in full in the report.

At Link Stone Advisory we work with founders who have found that their financial reporting was not keeping pace with their growth. We help stabilise the finance function and establish the right management information, giving leadership teams the forward visibility they need to make decisions with confidence.

We offer a free initial consultation in the strictest confidence. If you want to expect more from your board and professional advisors, contact us.