The objectives of this study were: 1) to determine the amount of costs, revenues, profits, and profitability value of cassava tapai agroindustry in Pekanbaru. 2) to determine the level of efficiency of cassava tapai agroindustry in Pekanbaru. 3) to determine the added value of cassava tapai agroindustry in Pekanbaru. This research was conducted from January 2014 until Juni 2014. The data collec…