The article is devoted to examining how customized managerial reporting overcomes the limitations of standard financial statements and strengthens strategic decision-making. The purpose of the work is to present an integrated view of recent academic research and practical implementation experience demonstrating how automated and tailored reporting systems improve managerial effectiveness. Recent (post-2021) academic studies, together with anonymized material from consulting work in several industries, form the basis of this paper’s qualitative approach. Looking across these sources shows a pattern: managers who rely on customized internal reports usually receive information that is not only timelier but also more detailed — and at times predictive — compared with standard financial statements. In practical terms, firms using such tools have shortened decision cycles, improved profitability, tightened the fit between KPIs and strategic goals and raised operational efficiency. Put together, the results point strongly in one direction: internal reporting systems built ‘by management, for management’ can actually work as a very practical tool for running a data-driven strategy. In our own experience with several client projects, this held true again and again.