CoreTax Era Begins: BDO Indonesia Urges Corporations to Face New Tax Reporting Paradigm in 2026
The CoreTax Era Begins: BDO Indonesia Urges Corporations to Face New Tax Reporting Paradigm in 2026
Jakarta — Indonesia’s Ministry of Finance, through the Directorate General of Taxes (DJP), has retired legacy platforms such as DJP Online and the e-Faktur desktop application, marking the beginning of a new era in integrated digital tax administration with real-time transparency. This transition implements the full Core Tax Administration System (CoreTax).
As corporations approach the critical deadline of 30 April 2026 for submitting the Annual Corporate Income Tax Return (SPT Tahunan PPh Badan) for the 2025 tax year — the first annual filing that must be conducted entirely through the CoreTax framework — companies must recognise that this change extends far beyond a mere system upgrade.
“This represents a fundamental shift in the way corporations interact with the state,” said Irwan Kusumanto, Managing Partner at KKP Kusumanto & Rekan and Head of Tax at BDO Indonesia, in a statement on Monday, 9 March 2026.
The new system is built upon complete integration, whereby every e-Invoice issued and every withholding certificate (e-Bupot) created automatically enters the corporate taxpayer’s general ledger in real-time. As a result, when preparing the Annual Tax Return, most data will be pre-populated based on monthly reporting activities.
This transition effectively terminates the “year-end reconciliation” era and brings businesses into the “continuous accuracy” age. The CoreTax architecture is designed to identify data inconsistencies even before the tax return is successfully submitted.
“The introduction of CoreTax is not merely a technical system update, but a fundamental restructuring of tax governance in Indonesia,” Kusumanto stated.
He explained that with real-time validation now in place, data integrity becomes a strategic asset. “Data hygiene” is no longer merely a back-office administrative task, but has become “a strategic imperative for corporate leadership to mitigate audit risk and ensure sustained compliance,” he added.
As three strategic pillars for company leaders, KKP Kusumanto & Rekan recommends three primary pillars for corporate management in navigating this new ecosystem:
Strengthening Data Governance: Ensuring data integrity regarding vendor tax registration numbers (NPWP), Business Classification Codes (KLU), and enterprise resource planning (ERP) integration, as the DJP now possesses direct transaction-level visibility.