Cash Flow
Cash Keeps a Business Alive
A business can be profitable on paper and still collapse if it runs out of cash. Wages, rent and supplier bills all have to be paid in actual money on the day they fall due — the tax office and the landlord do not accept IOUs. Cash flow is the movement of money into and out of a business over time. If more is going out than coming in for too long, the business becomes insolvent and folds.
This is why the biggest conceptual trap in Finance is assuming profit and cash are the same thing. A sale generates profit the moment it is made, but the cash may not arrive for 30, 60 or 90 days if the customer is on trade credit. Meanwhile the business still has to pay wages every Friday.
Profit is not the same as cash. A business can be profitable and still fail if cash is not available to pay wages, rent and suppliers on the day they are due. Cash is about timing; profit is about the full trading year.
Reading a Cash-Flow Forecast
A cash-flow forecast is a table that predicts cash in and cash out, month by month. Students are not expected to build one from scratch, but interpreting one is core AQA content. The four key rows are:
Cash inflows — money coming in from sales, loans, investment or asset sales.
Cash outflows — money going out on wages, rent, stock, utilities, loan repayments.
Net cash flow — inflows minus outflows for that month. It can be positive or negative. \(\text{Net cash flow} = \text{Total inflows} - \text{Total outflows}\)
Opening and closing balances — the opening balance is how much cash the business had at the start of the month. The closing balance is opening balance + net cash flow, and it becomes the next month’s opening balance.
Worked Example — A Cornish Surf Shop
A surf shop in Newquay starts January with a cash balance of £8,000 (the opening balance). In January it receives £12,000 from sales (inflow) and pays out £15,000 in wages, rent and stock (outflow).
Step 1 — net cash flow:
$$\text{Net cash flow} = \pounds12{,}000 - \pounds15{,}000 = -\pounds3{,}000$$
Step 2 — closing balance:
$$\text{Closing balance} = \pounds8{,}000 + (-\pounds3{,}000) = \pounds5{,}000$$
The shop ends January with £5,000 in the bank. Still positive — but if February repeats the same £3,000 shortfall, the balance falls to £2,000, and by March the shop is overdrawn. Retail often shows this seasonal pattern: Dunelm, the UK homeware chain, sees its sales rise and fall with the seasons and has to manage tighter cash in the quieter months.
Closing balance = Opening balance + Net cash flow. Net cash flow = Cash inflows − Cash outflows. The closing balance of one month is the opening balance of the next.
Why Too Much Cash Is Also a Problem
Most students see cash-flow problems as ‘not enough cash’. That is only half the story. Holding too much idle cash is also wasteful because of opportunity cost. Cash sitting in a current account earns almost no interest. The same money, invested in new stock, marketing, or a savings product, could have been earning a return. Experienced managers aim for enough cash to pay bills comfortably — not a pile sitting idle.
Fixing a Cash-Flow Problem
When a forecast shows a shortfall, the business has four main levers.
Re-scheduling payments — negotiate longer trade credit with suppliers or delay non-urgent bills. Low risk, but can damage supplier relationships if overused.
Arrange an overdraft — short-term bank facility for a dip. Quick and flexible, but interest is high and the bank can withdraw the facility.
Reduce cash outflow — cut non-essential spending, renegotiate rent, switch to cheaper suppliers, reduce stock held. Takes longer to bite but has no borrowing cost.
Increase cash inflow — chase unpaid invoices, offer discounts for early payment, run a promotion. The right fix, but depends on customer response and may squeeze profit margins.
Matching the Fix to the Problem
A good manager picks the right solution for the right problem. A one-off dip — say a major customer pays late by a fortnight — is what overdrafts are designed for. A structural problem — outflows consistently higher than inflows — cannot be fixed by borrowing, because the debt just grows. That needs cost cutting, price changes or finding new sources of revenue. Dunelm, the UK homeware retailer, faces predictable seasonality: sales rise and fall through the year, with busy and quiet quarters. Rather than constantly juggling overdrafts, Dunelm plans supplier payment terms and stock levels around the pattern, keeping cash healthy year-round. The lesson is the same at any scale: forecast first, then use the right tool for the specific shortfall. A small business might use a mix — rescheduling a couple of supplier invoices, asking customers to pay faster, and keeping a small overdraft as backup — rather than relying on any single solution.