Prior research into the adoption timing decision of organisations in relation to newly promulgated accounting standards has focused exclusively on public enterprises and used economic cost-benefit frameworks as a main method of analysis. The current study examines the impact of a broader range of factors, including cost-benefit considerations, on the adoption timing decision of private firms with respect to the new set of Canadian accounting standards for private enterprises released in 2009. These factors were organised into a coherent framework using the theory of planned behaviour. The survey findings reveal that several items related to attitudes towards the behaviour, subjective norms and perceived behavioural control play a significant role in managers' adoption behaviour. This study provides relevant insights for private enterprise managers, financial statement users, standard setters and academics.