Management accounting theories claim that firms experience different risks during different stages of a product’s lifecycle. This study examines the moderating role of corporate governance on the relationship between a firm’s product lifecycle and its risk- taking aspects. The study was conducted from 2006 to 2014 in the Tehran Stock Exchange. We conducted a statistical panel data analysis and the sample consisted of 128 firms (1,152 firm-year observations). The results showed that the decline stage of the product life cycle is the only stage that would affect the risk-taking of the selected firms. Conceivably, there is a positive relationship between the decline stage of the product lifecycle and risk-taking. In addition, the results indic...