SEOUL, Jan. 22 -- South Korean actor and Astro member Cha Eun-woo is under investigation by the country's National Tax Service (NTS) over alleged tax evasion amounting to 20 billion won (US$13.6 million), Channel News Asia (CNA) reported.

The investigation, which involved an intensive audit by the Seoul Regional Tax Office's Investigation Division 4, took place in July 2025 before Cha enlisted for his mandatory military service, according to the news report.

The report furthersaid the NTS later informed the actor that he owed additional taxes, including income tax, after concluding that Cha had evaded tax through a "one-person agency" set up by his mother.

Although Cha is signed with management company Fantagio, investigators found tha...