How to Check and Upload PPh 21 Tax Withholding Proof via Coretax DJP

JAKARTA, KOMPAS.com – The Directorate General of Taxes (DJP) of the Ministry of Finance offers a digital service for filing the Annual Tax Return (SPT Tahunan) via the Coretax DJP system. Through this system, taxpayers (WP) can submit their tax reports without having to visit a tax office. Online SPT filing forms part of the government’s tax administration transformation to simplify services for taxpayers. The Coretax system is expected to make the filing process faster, more integrated, and more accurate. Director General of Taxes Bimo Wijayanto urged the public to submit their annual SPT before Idul Fitri. ‘So that Lebaran is truly back to fitri, tax reporting should be submitted promptly. Rather than Lebaran later feeling insincere, it is better that the obligation is completed,’ said Bimo during a tax class with journalists on Thursday (5 March 2026). According to Bimo, filing SPT earlier will help taxpayers settle their obligations before the long holiday. Consequently, the public can celebrate Idul Fitri in a more comfortable atmosphere since administrative obligations have been completed. Taxpayers can now check and use tax withholding documents digitally via the Coretax system of the Directorate General of Taxes (DJP). To check withholding documents in Coretax, taxpayers must first log in to their Coretax DJP account. After logging in, select the Portal Saya module, then open the Dokumen Saya menu. On that page, look for a document titled Bukti Potong PPh Pasal 21 A1 (BPA1). If the document is available, users can scroll the table to the right and press the Download button to download the withholding proof. If the document has not appeared, taxpayers can press the refresh button to update the list of documents. In addition to checking, taxpayers can also add or upload data for withholding proofs when filling out the Annual Tax Return in Coretax.