Why Profitable Businesses Can Run Out Of Cash
A profitable month can still contain a week when there is not enough cash to pay a bill. Profit measures revenue and expenses under your accounting method. A cash forecast asks a different question: when will money actually enter and leave the bank?
The Timing Gap
A service business may deliver work today and collect payment later. A wholesaler may pay a supplier before a customer pays an invoice. A retailer may buy inventory long before selling it. The business can expect a margin while still needing cash to bridge the gap.
Illustration: you start with $8,000, expect a $12,000 customer payment in week four, and must pay $9,000 in costs during week two. That expected receipt does not pay the earlier bills. Without another change, the forecast shows a $1,000 shortfall in week two.
Growth Can Make The Gap Larger
More work can require stock, contractor payments, equipment, or payroll before receipts arrive. A rising sales total alone does not show whether you can fund the next delivery cycle.
Build A Weekly Cash View
For each week, record opening cash, expected receipts, and expected payments. Closing cash equals opening cash plus receipts minus payments. Carry that closing figure into the following week.
Use realistic collection dates and include commitments such as payroll, supplier bills, taxes, loan payments, and owner withdrawals where applicable. Avoid counting an unconfirmed sale as certain cash.
Find The Lowest Week
The lowest projected closing balance is an early warning. Compare a base case with a slower-collection or lower-sales case. Review possible changes to payment timing, spending, scope, or collections before the tight week arrives. Discuss financing or tax decisions with qualified advisers.
Update With Actual Results
Each week, replace estimates with actual receipts and payments, investigate material differences, and extend the forecast. A forecast becomes more useful when it informs a regular decision, rather than sitting untouched in a file.
Build Your Weekly Forecast Next
Follow the 13-week cash flow forecast guide to turn this timing gap into a weekly view. Its worked example uses a store, but the same opening cash, receipts, payments, and closing cash structure also works for service businesses.
Put It Into Practice
Learn the method in the free Cash Flow course. For scenario comparison, actuals tracking, and saved forecasts, explore the Cash Flow Planner, a paid monthly subscription.
Illustrative examples only. Educational content does not replace financial, accounting, or tax advice.