This paper explores the relationship between sustainability reporting, financial reporting quality, and investment selection. In fact, the research is based on a comprehensive theoretical framework; moreover, it relies on empirical data to measure whether sustainability reporting improves the credibility of financial disclosures and allows investors to make informed decisions. Results suggest a positive correlation between the comprehensiveness and quality of sustainability information reported by those reports and financial statement reliability, as well as influence on the investment process of investors. Factors like the size of the economic unit, profitability, activity type, cultural aspects, and governance structure impact the sustainability of reporting satisfactorily. The research confirms that sustainability reporting is a strategic instrument that drives market relation improvement and economic unit reputation. Nevertheless, the authors recognize limitations in the analysis, which deserve to be spoken more loudly given the data at hand and the scope of the study. In further research, the study would be extended to demonstrate how sustainability reporting standards could influence financial performance and stakeholder engagement over time in other environmental and economic cultural settings by using large sample sizes and a more comprehensive range of stakeholders. This research aims to increase the adoption of these practices and contribute towards a healthier, more sustainable, and more transparent financial system by demonstrating the value of sustainability reports.