Liquidity and Working Capital (Edexcel 9BS0 2.3.2)
Liquidity measures whether a business can pay its bills as they fall due. The topic centres on two ratios read from the statement of financial position — the current ratio and the acid test — plus the management of working capital. It pairs naturally with cash flow and business failure questions.
Measuring liquidity: current ratio and acid test
Both ratios come from the statement of financial position, the snapshot of what a business owns and owes on one date.
- Current ratio = current assets ÷ current liabilities
- Acid test = (current assets − inventory) ÷ current liabilities
Worked example: a firm holds current assets of £60,000, of which £24,000 is inventory, against current liabilities of £40,000.
- Current ratio = 60,000 ÷ 40,000 = 1.5
- Acid test = (60,000 − 24,000) ÷ 40,000 = 0.9
The textbook comfort zone for the current ratio is roughly 1.5–2.0, and the acid test strips out inventory because stock may sell slowly or below book value. The gap between this firm’s two ratios shows its short-term strength depends heavily on shifting that £24,000 of stock. Quote both ratios in answers: one alone can flatter or condemn unfairly.
Working capital and why the 'ideal' ratio varies
Working capital = current assets − current liabilities. It is the money circulating through the cycle of buying stock, selling it, collecting cash from receivables and paying payables. Too little and the firm misses payments; too much and cash sits idle in stock or unpaid invoices instead of earning a return.
The right level depends on the model. Tesco has operated for years with a current ratio around 0.7 — alarming by the textbook rule — yet it is not in danger: groceries sell within days for immediate cash, while suppliers wait 30–60 days for payment, so cash arrives long before the bills do. A machinery maker holding slow-moving stock and offering customers long credit needs a far higher ratio to be equally safe.
Edexcel rewards this nuance. Judge a ratio against the industry and the speed of the firm’s cash cycle, not against a single memorised benchmark.
Improving liquidity and managing working capital
Ways to improve liquidity split into quick fixes and structural changes:
- Speed up receivables — tighter credit checks, prompt-payment discounts, chasing invoices.
- Cut stock levels — ordering little and often releases cash, though it raises the risk of running out.
- Negotiate longer payables terms — effectively free finance, but pressing small suppliers too hard can break them.
- Arrange an overdraft or sell unused assets for a one-off cash release.
- Sale and leaseback of property converts a fixed asset into cash at the cost of future rent.
Watch for overtrading in case studies: a fast-growing firm takes orders it lacks the working capital to fulfil, buying stock and hiring before customers pay. Growth is the cause, insolvency can be the result — which is why examiners so often pair this topic with business failure.
Key terms
Practice questions
A business has current assets of £60,000 including inventory of £24,000, and current liabilities of £40,000. Calculate the current ratio and the acid test ratio. [4 marks]
Model answer guidance: Current ratio = 60,000 ÷ 40,000 = 1.5. Acid test = (60,000 − 24,000) ÷ 40,000 = 36,000 ÷ 40,000 = 0.9. Present both to one decimal place and show the subtraction of inventory clearly.
Explain one reason why a supermarket can operate safely with a current ratio below 1. [4 marks]
Model answer guidance: Identify the cash cycle: stock converts to cash within days because customers pay immediately, while suppliers are paid on 30–60 day terms. Develop — cash from selling groceries arrives weeks before the matching supplier invoice is due, so low current assets relative to liabilities do not threaten day-to-day payments, as Tesco's ratio of around 0.7 shows.
Discuss whether cutting stock levels is a sensible way for a retailer to improve its liquidity. [8 marks]
Model answer guidance: For: stock is the least liquid current asset, so smaller, more frequent orders release cash quickly and improve the acid test. Against: thin stock risks empty shelves and lost sales, and bulk discounts disappear, raising unit costs. Conclude that it suits fast-selling predictable lines, but a retailer with seasonal or unpredictable demand trades liquidity for a revenue risk.
Assess the usefulness of the current ratio when judging whether a business faces liquidity problems. [10 marks]
Model answer guidance: Useful: quick to calculate, comparable over time, and a sharp fall flags trouble early. Limited: it is a snapshot that can be window-dressed at year-end, treats slow-moving stock as if it were cash, and the safe level varies by industry. Judgement: valuable as a trend and alongside the acid test and cash-flow forecast, unreliable as a single number against a universal benchmark.
Assess whether extending payment terms to suppliers is the best way for a growing business to fund its working capital needs. [12 marks]
Model answer guidance: For: trade credit is interest-free, scales with purchases and avoids new borrowing at a time when the firm may lack security. Against: pushing terms from 30 to 60 days strains supplier relationships, risks losing priority during shortages, and can damage reputation; alternatives include an overdraft, better credit control or slower growth. Judgement should weigh cost against relationship risk — cheapest finance is not free if a key supplier walks away.
Examiner tips
- Quote both liquidity ratios and the direction of travel over two years — a single year's number rarely supports a top-level judgement.
- Match the 'ideal' ratio to the business model in the case: fast stock turnover and cash sales justify a lower ratio, slow stock and credit sales demand a higher one.
- If a case shows rapid sales growth with rising receivables and stock, name overtrading explicitly — examiners reward the precise concept.
In The Business School simulation your students make these exact decisions in a live market against rival firms — every choice mapped to the specification. Free teacher demo, no installs, students join with a PIN.