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Financial ratio analysis is one of the most important tools for assessing a business's strategic position. Ratios turn raw financial data into meaningful indicators that can be compared across time periods, between competitors and against industry benchmarks. This lesson covers profitability ratios and liquidity ratios as required by AQA specification topic 3.7.2.
Absolute figures from financial statements — revenue of £50 million, profit of £5 million — tell us little on their own. Is £5 million a good profit? It depends on the capital employed, the industry average and how it compares with previous years. Ratios provide context by expressing performance relative to a base figure.
Ratios are used by:
Profitability ratios measure how effectively a business generates profit from its resources.
Gross Profit Margin = (Gross Profit ÷ Revenue) × 100
This measures the percentage of revenue remaining after the direct costs of production (cost of sales) have been deducted. A higher margin suggests better control of production costs or stronger pricing power.
| Scenario | Gross Profit (£m) | Revenue (£m) | Gross Profit Margin |
|---|---|---|---|
| Year 1 | 30 | 100 | 30% |
| Year 2 | 28 | 105 | 26.7% |
In this example, although revenue has increased, the gross profit margin has fallen — suggesting rising production costs or discounting.
Operating Profit Margin = (Operating Profit ÷ Revenue) × 100
Operating profit deducts all operating expenses (including overheads such as rent, salaries and marketing) from gross profit. This ratio is a better indicator of underlying business efficiency because it captures the full range of day-to-day costs.
Net Profit Margin = (Profit for the Year ÷ Revenue) × 100
Net profit (profit for the year) accounts for interest, tax and any exceptional items. A declining net profit margin alongside a stable operating profit margin may indicate rising interest payments — a signal of increasing financial risk.
Exam Tip: When interpreting a fall in net profit margin, always consider which layer of cost has increased. If gross profit margin is stable, the issue lies in overheads. If operating profit margin is stable but net margin falls, look at interest costs or tax changes. This layered analysis demonstrates sophisticated understanding.
ROCE = (Operating Profit ÷ Capital Employed) × 100
Capital employed = Total equity + Non-current liabilities (or equivalently, Total assets − Current liabilities)
ROCE is widely regarded as the single most important profitability ratio because it measures how efficiently a business uses all the long-term finance available to it. It answers the question: "For every £1 of capital invested, how much operating profit is generated?"
| Business | Operating Profit (£m) | Capital Employed (£m) | ROCE |
|---|---|---|---|
| Company A | 12 | 80 | 15% |
| Company B | 20 | 200 | 10% |
Despite Company B earning more absolute profit, Company A generates a higher return on the capital invested — it is using its resources more efficiently.
Exam Tip: ROCE is the ratio examiners test most frequently. Always state the formula, show the calculation, and provide at least two points of interpretation (trend analysis and comparison). If the question involves a capital investment decision, discuss whether the expected ROCE exceeds the firm's cost of capital.
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