The public sector literature on sustainability management accounting (SMA) has grown significantly in recent years, with numerous theoretical and empirical studies examining the purported link between management accounting and corporate sustainability within organisations. However, despite this surge, prior studies have largely confined their analytical scope to traditional SMA issues, such as corporate social, environmental, and governance responsibilities. Their analyses have predominantly concentrated on largely investigated elements such as situational linkages, transformational dynamics, agency issues, resistance, and conflicts. This study aims to address these limitations by examining corporate SMA systems within the burgeoning field of urban development. It utilises institutional theory and a case study from Egypt, a developing country, to explore how urban development could impact adopting a corporate SMA system in politically sensitive state-owned enterprises (SOEs). Contrary to existing literature, the findings indicate that urban development has created financial pressures for national governments, which have used these as a political instrument to implement a corporate SMA system within related SOEs. Additionally, the findings highlight the significant role of management accountants as central figures in integrating and standardising a corporate SMA system into the daily practices of current executives through advanced enterprise resource planning (ERP) technology. Moreover, as a development of institutional theory, the findings demonstrate the influence of corporate SMA reports on the decision-making processes of national governments in the context of urban development.