This module covers calculating accounting ratios and explaining what they show. The skills are: telling gross margin from markup, working out liquidity ratios, interpreting a change in profit, comparing businesses fairly, and stating what a ratio cannot show.
Check the current Cambridge IGCSE Accounting 0452 syllabus for the exact ratios and formulas in your exam year. Our Accounting learning guide shows where this module sits among the others.
What should you already know?
You should be able to prepare an income statement and a statement of financial position. If those feel shaky, revisit sole-trader statements first. Ratios are only as accurate as the statements they come from.
You also need comfortable percentage work: finding a percentage of an amount, and one amount as a percentage of another. The percentage-base explorer is a quick way to check this.
An orienting example
Kedai Mutiara, a fictional shop, had revenue of RM80,000, cost of sales of RM50,000 and expenses of RM18,000 for the year.
Gross profit = 80,000 − 50,000 = RM30,000. Profit for the year = 30,000 − 18,000 = RM12,000.
| Ratio | Working | Result |
|---|---|---|
| Gross margin | 30,000 ÷ 80,000 | 37.5% |
| Markup | 30,000 ÷ 50,000 | 60.0% |
| Profit margin | 12,000 ÷ 80,000 | 15.0% |
Check: 50,000 × 1.6 = 80,000, and 37.5% of 80,000 = 30,000.
The calculations are the easy part. A good answer then adds a sentence such as: “A profit margin of 15% means the shop keeps 15 sen from each RM1 of sales, but one year of figures cannot show whether this is improving.” Reading the ratio and naming its limit is what this module trains.
In what order should you study the lessons?
- Distinguish margin from markup first, because the same gross profit gives two different percentages and every later lesson relies on choosing the right base.
- Calculate liquidity using compatible definitions next, to sort current assets and liabilities correctly and apply the same definition each time.
- Interpret a profitability change with supporting evidence to learn to move from a number to a reasoned cause and the evidence that would confirm it.
- Compare firms only with relevant context to decide when two sets of ratios can sit side by side.
- Explain a ratio’s limitation instead of declaring a company good or bad to finish with a balanced conclusion.
Which traps catch most students?
The first trap is dividing by the wrong base, usually cost of sales when the question wants revenue. The second is putting a non-current loan into current liabilities. The third is comparing amounts instead of percentages of revenue.
A fourth trap is writing a verdict. Words like “good” and “bad” need evidence that one set of ratios rarely provides. Say what the ratio suggests, what it does not show and what extra information would help.
How should you use the practice set?
Work through the ratios and interpretation practice set after the lessons. Cover each answer, write your own working, then compare.
The last questions ask for written conclusions, so write them in full sentences. The ratios with interpretation limits tool can help you check the structure of your conclusion.
If you would like a teacher to look at your written interpretation, see our online one-to-one Accounting tuition.