Coretax-Based Personal PPh 21 Reporting Assistance for ABA 4 Jayan Borobudur Kindergarten Certified Teachers

Abstract

This community service activity aims to improve the understanding and skills of teachers at ABA 4 Jayan Borobudur Kindergarten in reporting personal Income Tax Article 21 (PPh 21) using the Coretax application. The main challenges identified include low tax literacy, limited digital competence, and dependence on external assistance in fulfilling tax obligations. This program applied a participatory and practice-based approach involving 15 certified teachers through lectures, demonstrations, hands-on practice, and intensive mentoring. Evaluation was conducted using a pre-test and post-test design, complemented by an observation checklist assessing participants’ ability to log into the system, input data, calculate taxes, and submit reports independently. The results indicate a measurable improvement, where the proportion of teachers able to independently complete tax reporting increased from 40% before the intervention to 80% after the program. In addition, participants demonstrated improved conceptual understanding and increased confidence in using digital applications. These findings confirm that practice-based mentoring is effective in enhancing tax literacy and digital reporting skills. This model can be replicated in similar educational settings to support sustainable tax compliance behavior.