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This study aims to investigate and compare the performance of Fama-French Five Factor Model and Hou et.al q5 factor model before and after the effect of transaction cost is taken into account in Indonesia Stock Market. To compare the performance of each factor before transaction cost, we use ordinary least square with monthly time-series data from 2002 to 2018. When comparing the performance of each factor after transaction cost, we use new performance metric from Novy-Marx and Velikov (2016) named generalized alpha. We find that Hou et.al q5 factor model cannot explain Fama-French SMB and HML factor while Fama-French five factor model cannot explain ROE and IA factor of Hou et.al q5 factor model. Except for SMB factor, this result is robust even when transaction cost is incorporated into the analysis. Our findings indicates that transaction cost is not a significant factor for comparing both model despite of monthly rebalancing of Hou et.al q5 factor model.