Tax audits frequently reveal inconsistencies in taxpayer classification between the Final Income Tax (PPh Final) scheme under PP 46/2013 and the general rates under Article 17 of the Indonesian Income Tax Law (UU PPh). The case of PT OIU highlights a dispute regarding the correction of the Final Income Tax base amounting to IDR 47,954,761,500.00, resulting from PT OIU's failure to prove its non-final status within the timeline stipulated by Article 8 paragraph (1a) of the UU KUP.
The conflict originated when the DJP classified PT OIU as a subject of PP 46/2013 based on its initial 2016 Annual Tax Return (turnover below IDR 4.8 billion). Conversely, PT OIU argued that their actual turnover since 2014 had already exceeded this threshold—reaching IDR 17,946,471,334.00 in 2014—which should have invalidated their Final Income Tax obligations. However, tax return amendments were only pursued after the audit had reached the SPHP stage.
The Panel of Judges provided a decisive resolution, asserting that tax return amendments made after an audit has commenced do not possess the legal standing to alter the calculation basis used in an SKPKB. The Judges emphasized that classification is determined by the reporting of the previous tax year. Because PT OIU was unable to present primary accounting evidence during the trial to refute the DJP's data, the Final Income Tax classification was deemed legally valid.
The implications of this ruling confirm that "material truth" in taxation remains bound by formal administrative procedures. A Taxpayer cannot retrospectively alter its tax status once the procedural deadline for amendments has passed. For practitioners, this case underscores the critical importance of proactively monitoring turnover thresholds at the end of each tax year to determine the appropriate taxation scheme for the following period. In conclusion, the appeal was rejected due to administrative delays and weak material evidence.