Return on equity (ROE) is calculated as net income divided by average shareholders’ equity, expressed as a percentage. It answers the question that every equity investor asks: for every unit of capital shareholders have invested in this business, how much profit did management generate? A business with ROE of 20% earns SAR 0.20 of net profit for every SAR 1 of equity — a more productive use of capital than a business with ROE of 8%. The practitioner insight that goes beyond the ratio itself: ROE can be high for good reasons (operational excellence and strong margins) or for concerning ones (high financial leverage that amplifies returns but also amplifies risk). Understanding why ROE is at the level it is requires decomposition, not just measurement.
In the Context of Egypt and the GCC
ROE is a primary performance benchmark for GCC sovereign wealth funds and institutional investors evaluating portfolio companies. Saudi Aramco, Saudi banks regulated by SAMA, and UAE financial institutions all report ROE as a key performance indicator in investor communications. For Saudi Tadawul-listed companies, analyst reports routinely benchmark ROE against regional and sector peers — making a sustained decline in ROE a prompt for investor questions about strategy, capital efficiency, and management effectiveness. Finance leaders of listed GCC companies who do not actively manage and communicate ROE trajectory are ceding the narrative to analysts who will draw their own conclusions.
The DuPont Decomposition
The DuPont decomposition breaks ROE into three components: net profit margin (net income divided by revenue), asset turnover (revenue divided by total assets), and financial leverage (total assets divided by equity). This decomposition reveals whether a high or low ROE is driven by profitability (how much of each revenue dirham becomes net income), efficiency (how much revenue is generated from each dirham of assets), or leverage (how much of the asset base is financed by debt versus equity). A business can improve ROE by improving any of the three components — and the correct management action depends on which component is the constraint. A finance leader who presents ROE without the DuPont decomposition is presenting a number without the diagnosis that makes it actionable.
What Goes Wrong
The specific ROE calculation error that most frequently misleads management is using ending equity rather than average equity as the denominator. When a company issues new equity mid-year, using the year-end equity balance understates the denominator and inflates the calculated ROE. Using the average of opening and closing equity — or monthly averages for a more precise calculation — produces a ROE that accurately reflects how well the capital was deployed over the full year, not just what the equity balance happened to be on December 31.
How Loop Wise Solutions Encounters This
In financial modelling and EPM planning engagements, we build ROE as a calculated measure in the management reporting model — using the DuPont decomposition to show the margin, efficiency, and leverage components alongside the headline ratio. This structure allows the finance team to track which component is driving ROE movement period over period, and to model the ROE impact of proposed strategic decisions before they are committed to.
