DGT Requires All Tax Working Papers into Coretax

JAKARTA, DDTCNews - Director General of Taxes, Bimo Wijayanto, has stated that his office will use the coretax administration system for working papers across all business processes, to be rolled out gradually from this month.

With this initiative, all working papers relating to supervision, collection, objections, appeals, and law enforcement will be processed by the Directorate General of Taxes (DGT) employees through the coretax.

"As such, all supervision working papers, law enforcement working papers, collection working papers and objections/appeals will gradually only be able to be processed in the coretax platform," said Bimo, as quoted on Tuesday (14/7/2026).

According to Bimo, this measure is intended to strengthen trust whilst also preventing business processes from being implemented using personal devices.

Accordingly, the execution of business processes by tax officers will only be possible once the officer concerned has logged in to coretax.

"For many years, working papers could be carried on laptops, tablets and mobile phones, outside the coretax system, where governance could not be maintained. From today, they will gradually be brought in and can only be processed within coretax," said Bimo.

On another note, coretax is a tax system developed by the DGT under Presidential Regulation (Pres. Reg.) 40/2018 to replace the previous system, namely the SIDJP.

Coretax officially came into use as a replacement for SIDJP with effect from early 2025. Coretax was also handed over by LG-Qualysoft, as the vendor, to the DGT in December 2025. (dik)