The article provides a comprehensive analysis of the transformation of accounting systems, company reporting, and ESG auditing within the framework of the emerging European model of sustainable business development and increasing requirements for transparency and accountability. It substantiates the role of these processes in ensuring the economic security of enterprises, particularly under growing regulatory pressure, heightened investor expectations, and the expanding influence of non-financial risks on financial performance. The study examines contemporary approaches to integrating financial and non-financial indicators into company reporting and identifies key trends in the development of integrated thinking and disclosure practices. Special attention is paid to the concept of double materiality as a methodological foundation for generating reliable and analytically sound non-financial information. This concept reflects both the impact of enterprises on the environment and society and the influence of ESG factors on financial standing and performance. European ESG audit practices are analyzed, including the verification of disclosure accuracy and completeness, the assessment of internal control systems, the identification of environmental and social risks, and the evaluation of the consistency of reporting with the company’s business model and sustainable development strategy. The author proposes a model for integrating ESG indicators into the chart of accounts through specialized subaccounts for environmental, social, and governance-related costs, as well as provisions for climate, regulatory, and reputational risks. This approach enhances transparency in cost formation, ensures consistency between financial and non-financial data, and establishes a solid information base for both internal and external ESG audits. Integrating non-financial risks into the accounting system is viewed as an element of strategic planning and a mechanism for improving organizational adaptability. The analysis of international standards (GRI, SASB, TCFD) and the European regulatory environment demonstrates that the three-level GRI structure ensures consistency in reporting, supports the assessment of material impacts on the economy, environment, and society, and increases the analytical value and reliability of ESG-related data. The application of an integrated approach to reporting and accounting strengthens economic security, fosters investor and stakeholder confidence, reduces information asymmetry, and supports long-term sustainability. Future research should focus on the digitization of ESG accounting, evaluation of non-financial risks’ impact on financial stability and enterprise value, adaptation of integrated reporting to sector-specific contexts, and the development of methodological recommendations for enhancing ESG audit effectiveness and sustainable risk management in the context of European integration. 

accounting, ESG, ESG audit, company reporting, sustainable development, economic security, GRI.