Abstract:
This study aims to examine the relationship between financial reporting quality, audit quality, and firm performance of companies listed on the Stock Exchange of Thailand. The data were
collected from annual registration statements (Form 56-1) during the period 20192023 (B.E. 2562 2566) obtained from the database of the Stock Exchange of Thailand. The sample consists of 354 listed companies that met the inclusion criteria. Financial reporting quality was measured using the models proposed by Dechow & Dichev (2002) and McNichols (2002). Audit quality was represented by a dummy variable indicating the size of the audit firm (Big 4 vs. Non-Big 4). Firm performance was assessed from both market-based and accounting-based perspectives, using Tobins Q, return on equity (ROE), and return on assets (ROA), respectively. Data were analyzed using descriptive statistics and multiple regression analysis.
The results revealed that financial reporting quality has a statistically significant positive relationship at the 0.05 level with both ROE and ROA, indicating that high-quality financial
reporting is a key indicator of a firms operational efficiency. However, financial reporting quality was found to have a negative but statistically insignificant relationship with Tobins Q. Furthermore, audit quality demonstrated statistically significant differences at the 0.01 level in relation to firm performance, as measured by Tobins Q, ROE, and ROA. Firms audited by Big 4 auditors exhibited higher average performance across all three indicators compared to those audited by non-Big 4 firms. These findings underscore the importance of high-quality financial reporting and auditing in enhancing information credibility, thereby improving firm performance and supporting sustainable growth in line with good corporate governance principles.