Profitability ratios: margins and mark-up
Profitability ratios turn profit into comparable percentages. Gross profit margin = gross profit / revenue x 100 (revenue left after cost of sales). Operating profit margin = operating profit / revenue x 100 (after cost of sales AND expenses, so stricter). Mark-up = profit / cost x 100 (added onto cost to set the price). As operating profit = gross profit - expenses, the operating margin is always lower. Compare a margin with a past year or a rival.
ROCE and the liquidity ratios
ROCE = operating profit / capital employed x 100 shows how efficiently capital earns operating profit - higher is better. Liquidity ratios use the balance sheet: current ratio = current assets / current liabilities (about 1.5 to 2 is healthy; too low risks running out of cash, too high means idle cash). Acid-test = (current assets - inventory) / current liabilities strips out inventory, a tougher test around 1. These ratios are numbers, not money or percentages.
Compare, and appraise with ARR
A single ratio says little; ratios assess performance and inform decisions. Comparison over time shows a trend - is the margin, ROCE or current ratio rising or falling? A percentage change measures the move between years, and a rival's ratio shows if the firm does better. For investments, ARR = average annual profit / initial investment x 100, where average annual profit = (total returns - initial investment) / years. Ratios use past data and ignore qualitative factors.
Drawn from real examiner reports.
Which profit figure to use
Gross profit (revenue - cost of sales) and operating profit (gross profit - expenses) are different figures, and mixing them feeds the wrong number into a ratio. The gross margin uses gross profit; the operating margin and ROCE use operating profit, NOT gross profit or revenue. Using the wrong line makes the answer out by the expenses.
June 2024 Paper 1 Q1(g): candidates who did not grasp what the gross profit margin measures could not use it correctly, showing the gross/operating profit distinction was not secure.
Round as asked and show working
Marks are lost on technique. Round to exactly the decimal places asked - usually two for a ratio or currency answer; an unrounded value can lose the mark. Show all working: a method mark stands for the right formula and substitution even if the figure is wrong. Add the unit - a percentage for a margin, ROCE or ARR; liquidity ratios are plain numbers.
June 2024 Paper 2 Q3(c): a correct current-ratio value still lost the mark because it was not given to the two decimal places the question required.
Mark-up divides by cost, not revenue
Mark-up and margin use the same profit but different bases, so they give different percentages. Mark-up = profit / cost x 100 - the percentage added onto cost to set the selling price. Profit margin = profit / revenue x 100 - the percentage of the selling price that is profit. Dividing by the wrong base swaps one for the other: mark-up divides by cost, margin by revenue.
ROCE uses operating profit
ROCE = operating profit / capital employed x 100. Two errors are common: using gross profit or revenue on top instead of operating profit, and dividing by revenue instead of capital employed on the bottom (that gives the operating profit margin). ROCE measures profit against the money invested, so both the operating-profit figure and capital employed must be used.
Acid-test removes inventory
The current ratio and acid-test are close but not the same. Current ratio = current assets / current liabilities. Acid-test = (current assets - inventory) / current liabilities - inventory is removed because stock is not always quick to turn into cash. Forgetting to remove inventory turns an acid-test into a current ratio.
A ratio needs a comparison
A ratio on its own means little - a current ratio of 2 or a margin of 40% is neither good nor bad until it is compared. Judge it against a benchmark, the previous year (is the trend up or down?) or a rival. A higher figure is not automatically better: a current ratio well above 2 can mean cash is sitting idle. Interpret and compare before you conclude.
November 2024 Paper 2 Q4(c): ratios matter in comparison and context; strong answers weighed the figures against other information rather than reading one number alone.
Profitable is not the same as liquid
Profitability and liquidity are different. Profitability (margins and ROCE) is whether revenue exceeds costs; liquidity (current and acid-test ratios) is whether the firm has enough cash to pay short-term debts now. A firm can be profitable yet run out of cash if customers pay slowly or cash sits in stock. A healthy margin does not guarantee a healthy current ratio.
November 2024 Paper 2 Q4(c): candidates who confused profit with profitability, or profitability with liquidity, could not evaluate whether profit was a good measure of the business success.
Formulae are given - interpret them
The six ratio formulae are printed, so a correct calculation alone scores low. The marks are in interpretation: say what the figure MEANS and compare it against a past year or rival before you judge. Those who could not explain what a margin measures could not analyse it.
Show working and the right units
Show every step: a method mark stands for the right formula and substitution even if the final figure is wrong. Give the answer to the decimal places asked, with the correct unit - a percentage for a margin, ROCE or ARR, a plain number for liquidity ratios.
Reach a supported judgement
On a 9-mark Justify or 12-mark Evaluate the numbers are the easy marks; the top band needs a supported judgement for the named firm. Choose the option or conclusion whose benefit outweighs the other in context. A balanced answer with no decision stays mid-band.
Accounts analysis uses a firm's financial documents — the statement of comprehensive income (income statement) and the statement of financial position (balance sheet) — to assess performance and inform decisions. In 4BS1 you INTERPRET these documents; you never construct them. The tools are six accounting ratios, whose formulae are PROVIDED in the exam.
Profitability:
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