The research topic focuses on conducting a comprehensive analysis of the role of the SAP ERP system in accounting processes within organizations. The research topic focuses on a thorough analysis of the role of the SAP ERP (Enterprise Resource Planning) system in the context of accounting processes within organizations. The SAP ERP system is an integrated software solution that enables organizations to manage various business functions, such as finance, accounting, human resources, sales, procurement, production, distribution, and others, on a single platform. The SAP ERP system is one of the most well-known and widely used ERP software solutions globally, with a wide range of products and services intended for small, medium, and large organizations. It enables organizations to integrate business processes, enabling efficient data exchange between different departments. Doing so facilitates resource management and data-driven decision-making and improves overall productivity. This software system enables organizations to automate processes, improve efficiency, reduce costs, and improve resource management through an integrated approach. This paper aims to investigate how the SAP ERP system can be effectively integrated into various accounting processes and how this integration can contribute to optimizing business processes, improving the accuracy of financial reporting, and facilitating the management of financial data. This thesis analyses how the accounting processes work within SAP and how automated the process is, with all its advantages and disadvantages. In addition to the processes themselves, SAP modules and the most important transaction codes used in the processing and posting phases have been processed in detail by individual modules. In addition to facilitating and speeding up the accounting processes themselves, the SAP ERP system also facilitates the internal control process, allowing organizations to have a detailed insight into the employees’ work and easily see errors. At the same time, the research aims to identify key success factors and challenges arising from this integration. It also explores the advantages of the SAP ERP system through the automation and management of financial information, as well as various aspects that can affect this system’s successful implementation and management. Through the analysis of relevant case studies and literature, the research provides deeper insights into the role of the SAP ERP system in improving the phases of the accounting process and guiding organizations that are planning or already implementing the integration of the SAP ERP system in their accounting activities.