This study was conducted to prove whether profitability, firm size, leverage, capital intensity, and inventory intensity affect the effective tax rate. The population of this study is all manufacturing companies for the basic and chemical industry sectors listed on the IDX in 2018-2020. The sample selection used a purposive sampling technique and obtained 83 samples. Data analysis using multiple linear regression analysis with IBM SPSS version 26 program. The results of the study prove that profitability does not affect the effective tax rate. Firm size, leverage, capital intensity, and inventory intensity variables affect the effective tax rate.