Indonesia's Tax Authority Implements Coretax System with Significant Uptake

Surge in Tax Returns

The Indonesian tax authority, Directorate General of Taxes (DJP), has reported a substantial increase in tax returns filed through the new Coretax system. Within the first three days of 2026 (January 1-3), 8,160 tax returns were successfully submitted, marking a dramatic rise compared to just 39 returns during the same period in 2025 ²

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Source 3

https://nasional.kontan.co.id/news/baru-tiga-hari-pertama-2026-sebanyak-8160-wp-laporkan-spt-tahunan-via-coretax

. This surge demonstrates growing taxpayer compliance and confidence in the new digital tax administration system.

Coretax Account Activation

As of January 2, 2026, a total of 11.19 million taxpayers had activated their Coretax accounts, representing about 75% of the 14.9 million taxpayers required to file annual tax returns ⁴

. The majority of activations came from individual taxpayers (WP OP) with 10,287,565 accounts, while corporate taxpayers (Wajib Pajak Badan) activated 816,117 accounts.

System Background

The Coretax system, developed since January 2021, represents a comprehensive modernization of Indonesia's tax administration infrastructure. Initially planned for implementation in 2024, the rollout was slightly delayed due to technical issues in previous years. The system aims to provide a more efficient, accurate, and integrated tax reporting mechanism, aligning with the government's vision of creating a more modern and compliant tax ecosystem.

Regulatory Support

To facilitate the successful implementation of Coretax, the Ministry of Finance has provided special regulatory accommodations. Through Minister of Finance Regulation (PMK) No. 117/2025, the DJP has been granted an exception to continue creating and filling new positions until December 31, 2026 ⁵

. This regulatory flexibility is designed to support the tax authority's efforts in managing the transition to the new digital system.

Implications

The successful adoption of Coretax is expected to significantly enhance tax compliance and administration efficiency. The substantial increase in early tax filings suggests that taxpayers are adapting well to the new system. The DJP's efforts to promote digital tax reporting are likely to continue shaping Indonesia's tax landscape in the coming years.