While software piracy continues to be a big threat to the growth of national and global economies, understanding why people intend to use pirated software and how to deter the use of pirated software have become urgent and important issues. The proposed model integrates perceived risk, software cost, and moral obligation with the theory of planned behavior (TPB) to jointly predict individual attitude and intention toward using pirated software. Data were collected through an online survey of 314 participants. A structural equation modeling was employed to test hypotheses. The results showed that perceived risk, software cost, and moral obligation could have impacts on the decisions to use pirated software. Theoretical and managerial implications are discussed.