Cash is king: how to manage runway when revenue is unpredictable
Revenue forecasts are unreliable right now. Cash management is the difference between surviving and closing.
According to the ABS, 47% of Australian SMEs reported decreased revenue in the past 12 months. Yet the businesses that close are rarely the ones earning the least. They are the ones that run out of cash. If your revenue is unpredictable right now, this post gives you a practical framework to extend your runway and stay in control.
60% of Australian small businesses that fail cite cash flow as the primary cause, even when they are profitable on paper. (ASBFEO)
Profit and cash are not the same thing. In volatile conditions, the gap between them widens fast. Understanding the real cost of running your business starts with knowing exactly where your cash stands week by week.
The 13-week cash flow model
Annual budgets are useless when revenue swings month to month. Monthly forecasts are too rough to catch problems in time. The 13-week rolling cash flow model sits in the sweet spot. Enough visibility to plan. Enough detail to act.
Build a week-by-week projection of cash in and cash out for the next quarter. Update it every Friday. Include three categories:
- Confirmed receivables: invoices sent, contracts signed
- Probable receivables: proposals pending, recurring revenue
- Committed expenses: payroll, rent, loan payments, supplier commitments
This model tells you exactly when you will face shortfalls and how large they will be. That visibility gives you time to act rather than react.
Three cash levers you can pull this week
Speed up cash in
Invoice on completion rather than end of month. Offer 2% early payment discounts for payment within seven days (the discount costs less than carrying the receivable). Automate payment reminders so no invoice slips through the cracks.
Slow down cash out
Negotiate longer payment terms with suppliers where possible. Review all automatic renewals and cancel non-essential subscriptions. Even shifting from monthly to fortnightly payroll smooths outflows and improves weekly visibility.
Build a cash buffer
Target three months of fixed costs in accessible reserves. If that feels out of reach, start with one month and build from there. Every dollar of buffer extends your runway and reduces the pressure to make desperate decisions.
Revenue concentration: the silent risk
If your top three customers represent more than 40% of revenue, you are one phone call away from a crisis. Map your revenue concentration and set targets to reduce dependency on any single customer or channel.
Diversification does not mean chasing every opportunity. It means building revenue streams across multiple customers, industries and contract types on purpose. When churn picks up in tough conditions, a diversified book keeps you afloat.
Scenario planning in practice
Build three scenarios for the next 12 months:
- Best case: revenue grows 10%, costs stable
- Base case: revenue flat, costs up 5%
- Worst case: revenue drops 20%, costs up 5%
For each scenario, calculate your cash runway and identify the trigger points where specific actions kick in. The worst case is not about pessimism. It is about having a plan ready so you can execute immediately if conditions deteriorate. Harvard Business Review found that companies with pre-built downturn playbooks recovered 30% faster than those that improvised.
AI-powered cash visibility
Manual cash flow management (updating spreadsheets, chasing receivable status, reconciling bank statements) consumes 4-8 hours per week for most SME owners. AI-powered tools connect to your accounting system, bank feeds and invoicing platform to provide real-time cash position and automated 13-week forecasts.
The real value is not just time savings. It is the ability to see problems coming weeks before they arrive, while you still have options.
Your next move
Start your 13-week cash flow model this Friday. Even a basic spreadsheet version gives you more visibility than most businesses have. Use the Margin Leakage Calculator to identify where cash is quietly leaking from your operations.
If you want a structured approach to cash flow optimisation alongside broader operational improvement, the Ops Accelerator program covers cash management, pricing and process automation in a single engagement. Get in touch to find out if it is the right fit.
