Understanding Cash Flow
A profitable business can still run out of money. Cash flow measures when money actually comes into and leaves the business. That timing can determine whether payroll, suppliers and taxes can be paid even when the income statement eventually shows a profit.
Profit and cash are not the same
A business can record a sale before the customer pays. It can purchase inventory that will not be sold for months. It can buy equipment that uses cash now but is treated differently for accounting purposes.
This is why looking only at sales or accounting profit can hide a developing cash shortage.
Receivables can trap cash
If customers have 30 or 60 days to pay, the business may have already paid labour and materials before receiving the corresponding revenue.
Invoice promptly, make payment terms clear and follow up consistently on overdue accounts.
Inventory also uses cash
Inventory sitting on a shelf represents money that cannot currently pay another bill. Buying larger quantities can reduce unit costs, but excess inventory can create cash pressure, spoilage or obsolete stock.
Seasonal businesses need planning
Farms, tourism businesses, construction companies and retailers can experience strong seasonal swings. A good month may need to finance several weaker months.
Build a monthly forecast rather than assuming annual revenue will arrive evenly.
Taxes can create false confidence
GST collected and payroll deductions can temporarily increase the bank balance even though the money is associated with future remittances.
Track these obligations separately so the operating balance is not mistaken for freely available cash.
Build a simple forecast
Start with the opening bank balance. Estimate cash receipts by month, then list expected payments such as inventory, payroll, rent, insurance, debt payments, taxes and equipment.
The forecast does not need to predict the future perfectly. Its value is showing when a shortage could occur early enough to respond.
Watch the conversion cycle
Ask how long it takes money spent today to return as customer cash. A deposit, progress billing or shorter payment terms can dramatically change the financing required for a job.
Cash reserves buy time
Unexpected repairs, customer delays and poor seasons happen. A reserve can keep a temporary problem from becoming an emergency.
The appropriate amount depends on the volatility and fixed obligations of the business.
Review cash before making commitments
A growing business can feel successful while consuming enormous amounts of cash. Before adding employees, vehicles, inventory or a second location, model the cash impact as well as the expected profit.
Build three versions of the forecast
A useful exercise is to model an expected case, a weaker-sales case and a stronger-growth case. The weak case shows how much room the business has if customers pay slowly or sales fall. Surprisingly, the growth case can also reveal cash pressure because more sales may require inventory, labour or materials before customers pay.
Know the dates, not just the amounts
A monthly forecast can still hide trouble if a large payment is due on the fifth and customer receipts normally arrive near the end of the month. For tight periods, forecast by week. Put payroll, loan payments, rent, supplier commitments and tax remittances on the calendar.
Watch early warning signs
Repeatedly delaying suppliers, using tax money for operations, carrying growing credit-card balances or depending on new customer deposits to finish older work can signal that cash flow needs attention. These signs do not automatically mean a business is unprofitable, but they should not be ignored.
Sources & Further Reading
Reviewed: September 2026
This article provides general educational information and is not legal, tax, accounting, financial, insurance or professional advice. Requirements and platform rules can change. Confirm requirements relevant to your business with the appropriate authority or qualified professional.
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