financial-metrics
Net profit margin is net profit divided by revenue — the residual share of sales after operating costs, depreciation, finance costs and tax. It is the owner’s ratio, not the firm’s operating ratio.
Net profit (profit for the period attributable to owners, in IAS 1 language) is what remains after interest, tax, and non-operating items. Dividing by revenue produces net profit margin:
Net profit margin = Net profit / Revenue
That makes it a useful equity lens and a poor firm lens. Two identical factories, one ungeared and one in an LBO, will print different net margins for reasons that have nothing to do with customers or costs.
Illustration only. Same operating company, two capital structures.
| Ungeared | Levered recap | |
|---|---|---|
| Revenue | €50.0m | €50.0m |
| EBIT | €8.0m | €8.0m |
| Interest | €0.2m | €3.1m |
| Tax (illustrative 25%) | €2.0m | €1.2m |
| Net profit | €5.8m | €3.7m |
| Net margin | 11.6% | 7.4% |
| EBITDA (unchanged) | €10.5m | €10.5m |
A teaser quoting “7% net margin, therefore low quality” would be describing the recap, not the operations. Operating margin and ROIC would have stayed in the same neighbourhood.
Use net margin to understand residual cash potentially available for dividends or to reconcile ROE. Do not use it as the primary comparable in M&A processes where leverage will be reset at close.
Watch tax-rate one-offs, discontinued operations, and hyperinflation or FX that hit the bottom line without hitting EBITDA.
Owner-managed statutory accounts; bank “profitability” covenants that still use net income; teaching the difference between firm and equity returns.
Net margin is highly sensitive to interest, tax attributes, and non-operating gains. It is the easiest ratio for a seller to dress with a property sale. It is not a valuation input in a standard unlevered DCF.
Dazur reports net margin alongside the interest and tax bridge so buy-side readers can strip financing before they argue about multiples.