What you'll learn
This revision guide covers profitability and liquidity ratios as tested in CIE IGCSE Business Studies. You will learn how to calculate key financial ratios from accounting data, interpret their results, and evaluate business performance. These ratios are essential tools for assessing whether a business is making sufficient profit and whether it can pay its short-term debts.
Key terms and definitions
Profitability ratios — financial measures that show how efficiently a business generates profit relative to its sales or capital employed
Gross profit margin — the percentage of revenue remaining after deducting cost of sales, calculated as (gross profit ÷ revenue) × 100
Net profit margin — the percentage of revenue remaining as profit after all expenses have been deducted, calculated as (net profit before tax ÷ revenue) × 100
Liquidity ratios — financial measures that assess a business's ability to pay its short-term debts using its current assets
Current ratio — a measure of whether a business has sufficient current assets to pay current liabilities, calculated as current assets ÷ current liabilities
Working capital — the finance available for day-to-day operations, calculated as current assets minus current liabilities
Current assets — assets that will be converted into cash within one year, including inventory, trade receivables and cash
Current liabilities — debts that must be paid within one year, including trade payables, bank overdrafts and short-term loans
Core concepts
Understanding profitability ratios
Profitability ratios measure how effectively a business converts revenue into profit. They are essential for stakeholders to assess business performance and compare results over time or against competitors.
Gross profit margin
This ratio shows what percentage of revenue remains after paying for the direct costs of producing goods or services. The formula is:
Gross Profit Margin (%) = (Gross Profit ÷ Revenue) × 100
A business with revenue of £500,000 and gross profit of £200,000 has a gross profit margin of 40%. This means that for every £1 of sales, 40p remains to cover operating expenses and generate net profit.
A higher gross profit margin indicates:
- Effective control of production costs
- Strong pricing power
- Efficient purchasing strategies
- Added value in products or services
A falling gross profit margin suggests:
- Rising costs of raw materials or direct labour
- Increased competition forcing price reductions
- Wastage or inefficiency in production
- Theft or stock loss
Net profit margin
This ratio reveals what percentage of revenue becomes actual profit after all expenses. The formula is:
Net Profit Margin (%) = (Net Profit before tax ÷ Revenue) × 100
If a business has revenue of £500,000 and net profit of £50,000, the net profit margin is 10%. This indicates that 10p of every £1 in sales becomes profit.
A higher net profit margin indicates:
- Strong overall cost control
- Efficient operations
- Competitive advantage
- Sustainable business model
A falling net profit margin suggests:
- Rising operating expenses (rent, salaries, utilities)
- Increasing marketing or administrative costs
- Poor expense management
- Reduced operational efficiency
Net profit margin is always lower than gross profit margin because it accounts for all expenses, not just cost of sales.
Understanding liquidity ratios
Liquidity ratios assess whether a business can meet its short-term financial obligations. Poor liquidity causes business failure even when a company is profitable, as it cannot pay suppliers, employees or other creditors on time.
Current ratio
This ratio compares current assets to current liabilities. The formula is:
Current Ratio = Current Assets ÷ Current Liabilities
A business with current assets of £80,000 and current liabilities of £40,000 has a current ratio of 2:1 (or simply 2).
Interpreting the current ratio:
- Below 1.5:1 — potential liquidity problems; the business may struggle to pay debts
- Between 1.5:1 and 2:1 — generally acceptable; sufficient current assets to cover liabilities
- Above 2:1 — strong liquidity position, but possibly too much cash tied up unproductively
A current ratio of exactly 1:1 is concerning because current assets only just cover current liabilities. Any delay in collecting receivables or selling inventory could cause cash flow problems.
Working capital
While not strictly a ratio, working capital provides the absolute value of liquid resources available:
Working Capital = Current Assets − Current Liabilities
Positive working capital indicates a business can pay short-term debts. Negative working capital signals serious liquidity problems requiring immediate action.
Factors affecting profitability ratios
Several internal and external factors influence profitability ratios:
Internal factors:
- Pricing strategies — higher prices improve margins if sales volume holds
- Cost control measures — reducing waste, negotiating better supplier terms
- Operational efficiency — improving productivity, reducing labour costs per unit
- Product mix — focusing on higher-margin products
- Sales volume — spreading fixed costs over more units
External factors:
- Competition — rivals may force price cuts that reduce margins
- Economic conditions — recessions reduce consumer spending and may increase costs
- Supplier pricing — rising raw material costs reduce gross profit margin
- Government policy — minimum wage increases, new regulations
- Market demand — changes in consumer preferences affect sales and pricing power
Factors affecting liquidity ratios
Liquidity is influenced by different factors than profitability:
Internal factors:
- Credit control — how quickly the business collects money from customers
- Inventory management — holding excess stock ties up cash
- Payment terms — negotiating longer payment periods with suppliers
- Cash management — controlling cash outflows and maintaining reserves
- Investment decisions — purchasing fixed assets reduces liquid resources
External factors:
- Economic climate — recessions cause customers to delay payments
- Seasonal demand — some businesses face periods of low cash inflows
- Supplier payment terms — strict payment deadlines strain liquidity
- Interest rates — higher rates increase cost of overdrafts
- Customer behaviour — slow-paying customers reduce cash availability
Limitations of ratio analysis
Financial ratios provide useful insights but have significant limitations:
Historical data: Ratios use past financial statements and may not reflect current trading conditions or future performance.
Lack of context: A ratio alone is meaningless without comparison to previous years, competitors or industry averages.
Different accounting policies: Businesses use different depreciation methods, inventory valuation or expense classifications, making comparisons unreliable.
Qualitative factors ignored: Ratios cannot measure employee morale, management quality, brand reputation or innovation potential.
Window dressing: Businesses may manipulate figures to present better ratios, such as delaying purchases to temporarily improve the current ratio.
Industry variations: What constitutes a "good" ratio varies significantly between industries. Supermarkets typically have low profit margins but high turnover; luxury brands have high margins but lower volume.
Size differences: Comparing ratios between a small local business and a multinational corporation provides limited insight.
Worked examples
Example 1: Calculating and interpreting profitability ratios
Question: Jamal's Electronics has the following financial information for 2023:
- Revenue: £400,000
- Cost of sales: £280,000
- Operating expenses: £80,000
Calculate (a) the gross profit margin and (b) the net profit margin. Interpret what these ratios tell Jamal about his business. [6 marks]
Answer:
(a) Gross profit = Revenue − Cost of sales = £400,000 − £280,000 = £120,000 Gross profit margin = (£120,000 ÷ £400,000) × 100 = 30% [2 marks]
(b) Net profit = Gross profit − Operating expenses = £120,000 − £80,000 = £40,000 Net profit margin = (£40,000 ÷ £400,000) × 100 = 10% [2 marks]
Interpretation: The 30% gross profit margin shows that Jamal retains 30p from every £1 of sales after paying suppliers and direct costs. This indicates reasonable control over purchasing and pricing. The 10% net profit margin shows the business generates profit after all expenses, though operating costs consume two-thirds of gross profit. Jamal should compare these ratios to previous years and competitors to assess whether they represent strong or weak performance. [2 marks]
Example 2: Calculating and evaluating liquidity
Question: Caribbean Crafts Ltd has current assets of £75,000 (including inventory of £30,000, receivables of £25,000 and cash of £20,000) and current liabilities of £50,000.
(a) Calculate the current ratio. [2 marks] (b) Assess whether Caribbean Crafts has adequate liquidity. [4 marks]
Answer:
(a) Current ratio = Current assets ÷ Current liabilities = £75,000 ÷ £50,000 = 1.5:1 [2 marks]
(b) Caribbean Crafts has a current ratio of 1.5:1, which is at the minimum acceptable level. This means it has £1.50 in current assets for every £1 owed in short-term debts. [1 mark]
The business can likely meet immediate obligations, but there is little margin for error. [1 mark] If customers delay payments or inventory is slow to sell, the business could face liquidity problems. [1 mark] The £20,000 cash holding (27% of current assets) provides some security, but management should monitor receivables collection closely and ensure inventory turnover remains strong. A higher current ratio would provide greater financial security. [1 mark]
Example 3: Comparing business performance
Question: Two restaurants have the following year-end results:
City Bistro: Revenue £600,000; Gross profit £360,000; Net profit £60,000 Harbour Grill: Revenue £400,000; Gross profit £200,000; Net profit £60,000
Which restaurant demonstrates better profitability performance? Justify your answer. [6 marks]
Answer:
City Bistro:
- Gross profit margin = (£360,000 ÷ £600,000) × 100 = 60%
- Net profit margin = (£60,000 ÷ £600,000) × 100 = 10%
Harbour Grill:
- Gross profit margin = (£200,000 ÷ £400,000) × 100 = 50%
- Net profit margin = (£60,000 ÷ £400,000) × 100 = 15% [3 marks for calculations]
City Bistro has a higher gross profit margin (60% vs 50%), suggesting better control of food costs or higher pricing power. [1 mark] However, Harbour Grill has a superior net profit margin (15% vs 10%), indicating more efficient overall operations despite lower revenue. [1 mark] Harbour Grill demonstrates better profitability performance because it converts a higher percentage of revenue into profit, which is the ultimate goal. City Bistro needs to reduce operating expenses to improve net profitability. [1 mark]
Common mistakes and how to avoid them
Forgetting to multiply by 100: Profitability ratios must be expressed as percentages. Calculate (profit ÷ revenue) × 100, not just profit ÷ revenue. A gross profit margin of 0.35 should be written as 35%.
Confusing gross and net profit: Gross profit only deducts cost of sales from revenue. Net profit deducts all expenses including operating costs, interest and tax. Always check which profit figure the question requires.
Stating ratios without interpretation: Calculations alone earn limited marks. Always explain what the ratio means for the business — is it strong or weak? What does it suggest about financial health?
Ignoring context in evaluation questions: A "good" ratio depends on industry norms, business size, economic conditions and previous performance. A supermarket with a 5% net profit margin may be performing well, while a consultancy with the same margin is underperforming.
Mixing up the current ratio formula: Current ratio is current assets divided by current liabilities, not the other way around. A business with £100,000 current assets and £50,000 current liabilities has a ratio of 2:1, not 0.5:1.
Treating ratios as complete analysis: Ratios provide numerical insights but ignore qualitative factors like management competence, employee skills, customer loyalty and market opportunities. Strong evaluation answers acknowledge these limitations.
Exam technique for "Profitability and liquidity ratios"
Command words matter: "Calculate" requires a numerical answer with workings shown. "Analyse" demands explanation of what the ratio means and why it matters. "Evaluate" requires judgement with supporting reasoning about whether performance is strong or weak, considering context.
Show full workings: Even if your final answer is wrong, you can earn method marks by showing the correct formula and substituting the right figures. Write out formulas clearly: Gross Profit Margin = (Gross Profit ÷ Revenue) × 100.
Use comparative language: Develop answers using "higher than," "improved from," "worse than competitors" rather than stating ratios in isolation. This demonstrates analytical thinking that examiners reward.
Apply knowledge to the context: Use the business name and specific details from the question in your answers. "Caribbean Crafts should improve its current ratio by..." scores better than "The business should improve its current ratio by..."
Quick revision summary
Profitability ratios measure how effectively a business generates profit. Gross profit margin shows the percentage of revenue remaining after cost of sales; net profit margin shows the percentage remaining after all expenses. Higher margins indicate stronger performance, but must be compared to previous periods and competitors. Liquidity ratios assess ability to pay short-term debts. The current ratio compares current assets to current liabilities; a ratio of 1.5:1 to 2:1 is generally acceptable. Ratios have limitations including reliance on historical data, inability to measure qualitative factors, and differences in accounting policies between businesses.