Abstract

Lean Accounting (LA) is a methodology that minimizes waste and improves decision-making accuracy. Although previous studies have examined aspects of LA, research linking the attributes of accounting information systems (AAIS) and the characteristics of accounting information (CAI) to LA adoption in Thailand’s natural rubber industry remains limited. This study addresses that gap by (1) analyzing the impact of AAIS on LA adoption, (2) examining the influence of CAI on LA practices, (3) evaluating the effects of LA on firm financial performance (FFP), and (4) exploring strategic management approaches to optimize LA implementation. A mixed-methods approach was used, combining survey data from 400 participants with interviews conducted with 10 accounting executives. Quantitative data were analyzed using structural equation modeling, and qualitative insights were drawn from content analysis. Results reveal that both AAIS (x = 4.74) and CAI (x = 4.72) significantly influence LA adoption. Furthermore, continuous improvement (x = 4.79), lean decision-making (x = 4.76), and value stream costing (x = 4.67) positively affect FFP. To improve transparency, reduce costs, and enhance competitiveness, firms should adopt ERP systems, modern technologies, and clear performance indicators. This study offers strategic frameworks to help executives apply accurate accounting information for planning and cost control.