The purpose of this study is to empirically demonstrate the influence of the Self-Assessment System, Tax Auditing, and Tax Collection on Value-Added Tax (VAT) Revenue at the Pratama Tax Service Office (KPP Pratama) of Banjarmasin. The methodology employed in this study is a quantitative approach. Sampling was conducted using purposive sampling, comprising 30 trading companies with a total of 150 data observations. The research data were processed using SPSS software, version 26. The findings of this study conclude that, partially, the Self-Assessment System has a significant effect on VAT revenue; likewise, Tax Auditing has a significant effect on VAT revenue, and Tax Collection has a significant effect on VAT revenue. Simultaneously, the Self-Assessment System, Tax Auditing, and Tax Collection collectively exert a significant influence on VAT Revenue.