IB Syllabus Requirements for Cash flow
3.7.1
The difference between profit and cash flow
3.7.2
Cash flow forecasts
3.7.3
The relationship between investment, profit and cash flow
3.7.4
Strategies for dealing with cash flow problems
3.7.1
THE DIFFERENCE BETWEEN PROFIT AND CASH FLOW
Profit is a financial surplus that occurs when a business’s revenue is greater than its total costs over a period of time. Profit measures performance. Has the business created more value in revenue than it has used up in costs? Sales made on credit can count towards profit even when the customer hasn’t paid yet.
Cash flow is the movement of money into and out of a business over a period of time. This measures liquidity: does the business have enough cash at the right time to cover wages, suppliers, rent, loan repayments and other day-to-day expenses? Only actual movements of cash count, not promises to pay later.
Comparison of profit and cash flow in business management.
| Aspect | Profit | Cash flow |
|---|---|---|
| What it measures | Revenue minus total costs over a period | Money moving into and out of the business over a period |
| Credit sales included? | Yes, sales on credit are counted when earned | No, only actual cash received or paid |
| Main question answered | Has the business made a financial surplus? | Does the business have enough cash to pay bills now? |
| Short example | A sale on credit in March can increase profit | The cash from that sale may not arrive until May, so cash flow is tight in April |
| Business risk | A business can be profitable on paper | A business can still become insolvent if cash is not available when debts fall due |
A profitable business can still get into serious trouble. Suppose it sells many goods on credit in March and records a profit, but its customers don’t pay until May. Wages and suppliers are due in April, so the business may run short of cash despite making profitable sales. This is the heart of the inquiry question: accounting performance determines when profit is recorded, while the timing of payments determines cash flow. As a result, profitable businesses may still face insolvency.
Insolvency is a financial condition in which a business cannot pay its debts as they fall due. The business may still have customers and earn a profit; the problem is that cash isn’t available when payments are due. In class, I always say: profit keeps score, cash pays the bills.
Liquidity is the ability of a business to meet its short-term financial obligations using cash or assets that can quickly be turned into cash. Cash flow and liquidity are closely linked. Poor liquidity can make it difficult for a business to keep operating, even when its long-term prospects are strong.
Working capital is the short-term finance available for day-to-day operations, calculated as current assets minus current liabilities. Put simply, it is what the business has available soon, less what it must pay soon. Healthy working capital helps cover normal cash outflows, including wages, inventory purchases and utility bills.
Don’t treat profit and cash flow as interchangeable evidence. Positive net cash flow may come from a bank loan or an injection of money from the owner rather than profitable trading. On the other hand, negative cash flow in one month could be planned—for example, when the business buys equipment—so it doesn’t automatically show that the business model is failing.
3.7.2
CASH FLOW FORECASTS
A cash flow forecast is a financial planning document that estimates cash inflows and cash outflows for future time periods. Businesses usually present it as a table, often month by month. Depending on the business, the periods may instead cover weeks, quarters or years.
Cash inflows are cash receipts that enter the business during a period. These may include cash sales, payments from credit customers, tax refunds, loans received, grants and owner’s capital injections. Not every inflow counts as revenue. For example, a loan increases cash but isn’t sales income.
Cash outflows are cash payments that leave the business during a period. Rent, wages, raw materials, inventory and utilities are common examples. Outflows can also include delivery costs, loan repayments, interest, insurance and purchases of non-current assets.
A clear cash flow forecast normally includes rows for opening balance, cash inflows, total cash inflows, cash outflows, total cash outflows, net cash flow and closing balance. This structure shows the flow of cash during each period as well as the amount left at the end.
Monthly cash flow forecast with inflows, outflows and balances.
| Item | Formula | Jan / \£ | Feb / \£ | Mar / \£ | Apr / \£ |
|---|---|---|---|---|---|
| Opening balance | Previous closing | 5,000 | 8,600 | 10,500 | 11,100 |
| Cash sales | Cash in | 4,000 | 4,200 | 3,100 | 2,800 |
| Receipts from customers | Cash in | 2,500 | 2,800 | 3,000 | 2,600 |
| Loan received | Cash in | 2,000 | 0 | 0 | 0 |
| Total inflows | 8,500 | 7,000 | 6,100 | 5,400 | |
| Rent | Cash out | 1,500 | 1,500 | 1,500 | 1,500 |
| Wages | Cash out | 2,100 | 2,200 | 2,300 | 2,400 |
| Materials | Cash out | 700 | 800 | 1,100 | 1,300 |
| Loan repayment | Cash out | 600 | 600 | 600 | 700 |
| Total outflows | 4,900 | 5,100 | 5,500 | 5,900 | |
| Net cash flow | 3,600 | 1,900 | 600 | -500 | |
| Closing balance | 8,600 | 10,500 | 11,100 | 10,600 |
Use these two core calculations throughout the table:
Each period’s closing balance becomes the next period’s opening balance. Many errors occur at this link. A negative net cash flow won’t necessarily produce a negative closing balance if the opening balance is large enough. If the closing balance does become negative, however, the forecast shows a cash shortage unless the business arranges finance or changes its operations.
Timing needs close attention when constructing a forecast from data. Quarterly rent appears only in the months when it is paid. Credit sales enter the forecast when the cash is received, which may not be when the sale takes place. One-off items such as a tax refund, asset purchase or loan receipt belong only in the relevant period. In cash flow questions, slow and careful reading usually matters more than cleverness.
To interpret a cash flow forecast, explain what the figures indicate about liquidity and management decisions. Check for repeated negative net cash flows or falling closing balances. Seasonal peaks and one-off payments may also stand out, along with months when a bank overdraft could be needed or periods when excess cash could be put to productive use.
Forecasts help managers plan ahead. A manager can spot likely cash shortages, arrange finance before reaching a crisis point, negotiate with suppliers or delay spending. The business can also prepare for seasonal demand. This is especially important for small businesses, start-ups and businesses that face long gaps between paying costs and receiving customer payments.
A forecast, though, is only as reliable as the assumptions behind it. Customer demand may change. Competitors could cut prices, suppliers may increase costs, interest rates may rise, or customers might pay later than expected. This connects to the TOK issue of expectations and assumptions in financial information: the table may appear precise, but the future figures remain estimates based on what managers believe will happen.
3.7.3
THE RELATIONSHIP BETWEEN INVESTMENT, PROFIT AND CASH FLOW
Investment is spending by a business on resources, often non-current assets, with the expectation that they will help generate future returns. Cash flow feels the effect straight away: cash leaves when the business buys assets or funds projects. Any profit may come much later, provided the investment succeeds in raising revenue or cutting costs.
For a new business, this relationship is often uncomfortable. It may have to spend heavily on premises, equipment, inventory, marketing and staff before building a customer base. Money leaves faster than it comes in, so cash flow is often negative. Profit may be low or negative too, as sales haven’t yet grown enough to cover costs.
The situation can look different for an established business. It still may need investment, but existing sales revenue can help pay for it. Repeat customers and efficient operations may allow the business to earn a positive profit and maintain more stable cash flow. Even so, a major expansion project can weaken cash flow temporarily, before the extra profit arrives.

Investment, profit and cash flow are linked, but they don’t automatically move together. A business might invest now and face a cash outflow this month. Production capacity could rise next month, followed by higher sales later, with customer payments arriving later still. The cash payment may be immediate, while the financial benefit is spread over time.
That’s why final accounts and cash flow forecasts need to be read together. Final accounts show profitability and financial position; cash flow forecasts indicate whether the business can survive the timing of payments. An investment may be strategically right, yet the business can still run out of cash if it invests too much, acts too early or uses poor financing.
The concept of change fits this topic closely. As sales, costs, credit terms, seasonal demand and investment plans change, cash inflows and outflows keep shifting. Good managers don’t just ask, “Will this be profitable?” They also ask, “Can we afford the cash flow consequences while waiting for the profit?”
3.7.4
STRATEGIES FOR DEALING WITH CASH FLOW PROBLEMS
A cash flow problem is a shortage of cash that makes it difficult for a business to meet its short-term payments when they are due. The right strategy depends on what caused the problem. A temporary timing issue calls for a different response than a weak business model with poor margins.
There are three broad routes: reduce cash outflows, improve cash inflows or arrange additional finance. Real businesses often combine them, though each option brings trade-offs.
A business can reduce outflows by slowing, cutting or rescheduling its payments. It might negotiate longer payment terms with suppliers, delay non-essential asset purchases, reduce inventory orders or find cheaper suppliers. Other options include cutting waste, reducing overtime, leasing equipment rather than buying it, and postponing expansion.
The effect can be quick because less cash leaves the business. But cuts may harm quality, employee motivation, supplier relationships or long-term competitiveness. Delaying payments to suppliers may help cash flow today, yet create a reputation problem tomorrow. Cheap inputs can also prove expensive if quality falls and customers complain.
Improving inflows involves bringing cash into the business sooner or increasing the amount received. A business could offer discounts for early payment, tighten credit control, shorten the credit period offered to customers or require deposits. It might also use online payment systems, sell slow-moving inventory, improve promotion to increase sales, or review pricing.
This approach is often healthier than simply cutting costs because it targets the cash coming into the business. Even so, managers need to use judgement. An early-payment discount may improve cash flow while reducing the profit margin. If a business pressures customers too aggressively, relationships may suffer. Higher prices can increase cash per sale, but demand may fall when customers are price sensitive.
Additional finance provides extra funds to cover a cash shortage. Short-term options may include an overdraft, short-term loan, trade credit or owner’s capital injection. The business could also sell unused assets. Another option is to sell an asset and lease it back, releasing cash while continuing to use the asset.
Finance can buy time, but it isn’t a magic cure. Borrowing leads to future cash outflows through interest and repayments, while selling assets may weaken future operations. When poor sales, weak margins or uncontrolled costs are the underlying problem, extra finance may simply delay a deeper crisis.
Any good recommendation must fit the context. An overdraft may suit a seasonal business because its cash shortages are temporary and predictable. If too much cash is tied up in inventory, better stock control may be more appropriate. When customers pay late, stricter credit control makes more sense than cutting staff.
Managers also need to consider stakeholders. Employees may worry about wage cuts or reduced hours, while suppliers may dislike delayed payment. Customers could react badly to lower quality or tighter credit terms. Owners and lenders will want to know whether the action protects liquidity without harming long-term profitability.