A system error on Wednesday disabled local tax services across South Korea, affecting all regions except Seoul [1, 2].
The outage disrupted critical financial infrastructure, preventing citizens from paying taxes and accessing government documents through digital and physical channels. Because the failure hit both online portals and offline counters, it created a total blockade of local tax administration for millions of residents.
The disruption impacted the WETAX and Government24 online portals, as well as self-service kiosks and physical office counters [1, 2]. Local officials said the failure was comprehensive. "We are informing people that it will not work over the internet either," said Ji Jeong-hyeon, an official at the Daejeon Seo-gu Office tax department [1].
Government officials said the crash was due to an internal system error that occurred while implementing changes for the ninth local-government term administrative reorganization [1, 2]. The process involved transitioning 584 systems to reflect the new administrative structure [2].
Authorities quickly moved to dispel rumors of a cyberattack. "It is an internal problem, not an external attack," a government official said [2].
The outage left taxpayers unable to complete transactions as the standard local tax information system remained unresponsive. A YTN anchor said services were halted nationwide, with the sole exception of the capital city [1].
“"It is an internal problem, not an external attack,"”
This outage highlights the vulnerability of South Korea's highly digitized governance. When a single system update for administrative restructuring fails, it can paralyze the tax infrastructure of an entire country. The fact that Seoul remained operational suggests a fragmented system architecture or a staged rollout that prevented a total national collapse.
