Cash Flow

Why Revenue Growth Can Actually Destroy Your Cash Flow

Clemency Mdaya
28 April 2025
6 min read

One of the most dangerous financial myths in business is that growth solves cash flow problems. The truth is often the opposite: growth, if not properly managed, can create the very cash crisis it was supposed to prevent.

This phenomenon — sometimes called "overtrading" — is one of the leading causes of business insolvency in Australia. It is entirely possible, and more common than most people realise, to grow your way out of business.

Let me explain exactly how it happens and what you can do about it.

The Mechanics of a Growth-Induced Cash Crunch

When a business grows, it typically needs to spend money before it receives money. The gap between spending and receiving is called the cash conversion cycle, and it is the heart of the problem.

Consider a typical growth scenario:

A manufacturer wins a large new contract worth $500,000. To fulfil the contract, they need to:

  • Purchase raw materials (payable in 30 days): $150,000
  • Pay labour during production (payable weekly): $80,000
  • Deliver the finished goods
  • Invoice the customer (payable in 60 days): $500,000

The cash outflows ($230,000) happen weeks before the cash inflow ($500,000) arrives. If the business does not have sufficient working capital to bridge that gap, it hits a cash wall — even though the contract is profitable.

Now multiply this across several simultaneous large orders, all being fulfilled at once during a growth phase, and the cash requirement becomes enormous.

Four Ways Growth Consumes Cash

1. Accounts Receivable Expansion

More revenue means more invoices outstanding at any given time. If you invoice $500,000 per month on 30-day terms and your customers consistently pay in 45 days, you have approximately $750,000 of cash tied up in debtors at any point. If revenue doubles to $1M per month, that debtor balance grows to $1.5M — an additional $750,000 of your cash that is sitting with customers rather than in your bank account.

2. Inventory Build-Up

Product businesses need to carry more inventory to service higher revenue volumes. If you carry 60 days of stock and your cost of goods doubles due to revenue growth, your inventory balance doubles too. That is cash tied up in a warehouse rather than available for operations.

3. Upfront Costs to Deliver

Growth often requires investment ahead of the revenue it generates: hiring staff before the revenue they will generate has materialised, fitting out new premises, purchasing equipment, investing in marketing. These are real cash outflows that precede the inflows they are designed to create.

4. Tax Obligations Accelerate

As revenue grows, so do BAS obligations, PAYG withholding, and income tax. But unlike revenue, which arrives when customers pay, tax obligations arrive on the ATO's schedule. A business that doubles revenue in 12 months may face a dramatically higher tax bill that it was not financially prepared for.

The Overtrading Warning Signs

Overtrading is rarely obvious until it becomes a crisis. The early warning signs are subtle:

  • Consistently paying suppliers late despite strong revenue
  • Overdraft reliance growing month by month
  • Creditors ageing out — suppliers being pushed to 60 or 90 days when terms are 30
  • ATO debt accumulating — BAS or super payments being deferred
  • Declining bank balance despite profitable months on the P&L

If any of these are present in your business, the growth-cash dynamic deserves urgent attention.

How to Grow Without Destroying Your Cash Flow

Know Your Cash Conversion Cycle

Calculate how long it takes from when you spend cash to produce your product or service to when you collect cash from the customer. The shorter this cycle, the less working capital growth consumes. Every day you can reduce the cycle is working capital freed up.

Tighten Your Receivables

The most direct lever available to most businesses is to get paid faster. Practical measures include:

  • Reducing standard payment terms from 30 to 14 days for new clients
  • Requiring deposits or milestone payments on large projects
  • Following up overdue invoices systematically (a simple, disciplined debtor management process is worth tens of thousands of dollars per year for most businesses)
  • Offering small early payment discounts (e.g., 1% for payment within seven days)

Negotiate Payment Terms with Suppliers

Extending payment terms with key suppliers — from 14 days to 30 days, for example — directly improves your cash position. This is a legitimate, commercially normal negotiation that most suppliers will engage with, particularly for reliable, long-term customers.

Build a Cash Flow Forecast

You cannot manage what you cannot see. A 13-week rolling cash flow forecast gives you advance warning of pressure points and gives you time to act before the crisis arrives. A cash crunch that you can see eight weeks away is manageable. A cash crunch that arrives in your bank account on Monday morning is not.

Arrange Facilities Before You Need Them

Lines of credit, invoice financing, and overdraft facilities are most accessible when your business is in good financial health. If you can see growth coming, approach your bank or financier before the cash need becomes urgent. Lenders are far more accommodating when you are planning ahead than when you are managing a crisis.

Price for Cash Flow, Not Just Profit

Consider the cash flow implications of your pricing and payment terms when structuring new contracts. A slightly lower-margin deal that is paid in advance may be more valuable to your business than a high-margin deal with 60-day terms — depending on your cash position.

The Fundamental Truth

Revenue is not cash. A profitable contract that is underfunded is a threat, not an asset. Managing the relationship between growth, profitability, and cash flow is one of the core disciplines of good financial management — and one that separates businesses that scale successfully from those that grow themselves into trouble.

If your business is growing, treat cash flow management as a strategic priority, not an afterthought. The cost of getting it wrong is severe.

Tags

cash flow
revenue growth
working capital
overtrading
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