Net profit margin
Net profit margin expresses a specified later-stage profit subtotal as a percentage of revenue. The term is used inconsistently: a course or question may mean operating profit, profit before tax or profit after tax. Identify the required numerator before calculating and label the result clearly. A fall can reflect higher operating costs, financing costs or tax, depending on the measure used; investigate the underlying cause.
Worked example
Revenue is $200,000, operating profit $30,000 and profit after tax $18,000. Operating profit margin is 15%; an after-tax net profit margin is 9%. These answer different questions and cannot be substituted silently.
Common mistake
Do not assume that every paper uses net profit to mean the same subtotal. Use the paper’s current convention or the formula stated in the question.
Where it appears in your exams
| Qualification | Exam | Relationship | Period |
|---|---|---|---|
| ACCA | F2 | Supporting | July 2027–August 2028 |
| ACCA | FA | Direct | September 2026–June 2027 |
| ACCA | K1 | Direct | July 2027–August 2028 |
| CIMA | BA3 | Direct | Official assessment-window verification pending |
| CIMA | F2 | Direct | Official assessment-window verification pending |
| FIA | FFA | Direct | September 2026–June 2027 |