This research explores the influence of enterprise resource planning (ERP) system implementation on the quality of accounting information in Vietnamese small and medium-sized enterprises (SMEs). ERP systems, designed to unify and streamline information across various business processes such as accounting, finance, supply chain, and human resources, are critical in integrating internal and cross-business information. Given their complexity and cost, the effective implementation of ERP systems necessitates proficient users. This study, employing the Ordinary least squares (OLS) method for analysis, gathered data through purposive sampling from 145 users across 117 Vietnamese SMEs. The analysis, based on regression and complemented by t-tests, examined the hypothesized relationship between ERP implementation and accounting information quality enhancement. The findings reveal a significant positive correlation between ERP system implementation and improved accounting information quality, underscoring the importance of ERP systems in elevating the standard of accounting practices in SMEs. These insights are crucial for understanding the broader implications of ERP systems in business management and financial reporting.