This study examines whether a firm's corporate governance system, particularly with respect to the characteristics of the board of directors and senior management, affects how accurately the impact of accounting changes is reported to shareholders. We concentrate on the relation between corporate governance measures and accounting forecast errors that arise with adoption of the International Financial Reporting Standards by listed Australian firms. Evidence reveals that corporate governance mechanisms are associated with the likelihood and magnitude of managerial forecast errors.Key words: AIFRS, adoption; Corporate governance, mechanisms; Errors.It is widely accepted that sound financial disclosure mitigates agency problems by bridging the information asymmetry gap existing between management and shareholders. In contrast, poor financial disclosure often misleads shareholders and has adverse effects on their wealth. In recent years, researchers have found that corporate ownership structure and board composition affect financial reporting quality, proxied by management forecast precision, earnings restatements and voluntary disclosure of informational items (e.g., Bamber and Cheon, 1998;Eng and Mak, 2003;Ajinkya et al. , 2005;Karamanou and Vafeas, 2005;and Beekes and Brown, 2006). Karamanou and Vafeas (2005) find that attributes of corporate boards and audit committees are positively associated with voluntary disclosure of management earnings forecasts and that these forecasts are more precise when the board of directors and audit committees are effective. A recent study of Australian listed entities (Beekes and Brown, 2006) finds that a firm's corporate governance quality is positively associated with disclosure quality, as measured by its informativeness to the securities market.