<p>This study aims to analyse of the effectiveness of tax collection with warning letter and distress warrant on tax revenue at one of the KPP in Jakarta, namely KPP Pratama Kebon Jeruk Dua. The object of this research is the effectiveness of the tax collection and tax receipts at KPP Pratama Kebon Jeruk Dua. The effectiveness is measured by using several indicators. The research method used is a qualitative method and the type of the research is comparative descriptive analysis by comparing tax collection with warning letters and forced letters from 2016 to 2020 and ratio analysis to determine the level of effectiveness of tax collection. The data obtained were sourced from questionnaire, semi-structured interviews, observations, and documents ftom KPP Pratama Kebon Jeruk Dua. The result shows that in terms of indicators of resource and process. it has been running quite effectively even though there are still obstacles that occured, but in terms of goals it is classified as ineffective because the 2016 to 2020 there are still many tax collections and tax collection contributions to tax revenues that are classified as not and less effective.</p><p><strong> </strong></p><p><strong>Keywords: </strong><em>Effectiveness, Tax Collection, Warningg Letter, Distress Warrant, Tax Revenue</em></p>