This study examines the effects of coretax implementation, tax knowledge, and taxpayer awareness on individual taxpayer compliance. The study focuses on employees of PT Mitra Lestari Multiplas. A quantitative approach with a survey method was employed. Purposive sampling was used to select 101 observations from employees of the company. Using SPSS version 26, the data were analyzed through multiple linear regression analysis, preceded by descriptive statistical analysis and classical assumption tests, including (normality and heteroscedasticity) tests. The results indicate that all statement items were valid and reliable. Simultaneously, coretax implementation, tax knowledge, and taxpayer awareness have a significant effect on taxpayer compliance. However, partially, only taxpayer awareness has a significant effect on taxpayer compliance. The coefficient of determination (R²) of 0.926 indicates that 92.6% of the variation in taxpayer compliance can be explained by the research model. This study concludes that taxpayer awareness is the dominant factor in improving taxpayer compliance compared to system-related factors and tax knowledge. The implications of this study highlight the importance of increasing taxpayer awareness through continuous tax education and socialization to encourage greater compliance among individual taxpayers.
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