KDDI Scandal: $1.5bn Revenue Hit by Fictitious Transactions | FT

Tokyo, Japan – KDDI Corporation, one of Japan’s largest telecommunications companies, is grappling with a significant accounting scandal involving potentially February 6, 2026 revelations of approximately ¥246 billion ($1.5 billion) in fictitious revenue at its subsidiaries, Biglobe and G-Plan. The disclosure has prompted a delay in the release of the company’s third-quarter results and raised concerns about corporate governance within Japanese businesses.

The issues surfaced after advertising agencies delayed payments, triggering an internal review in early January 2026. KDDI confirmed suspicions that employees at Biglobe and G-Plan executed fabricated transactions within the advertising agency business, despite the absence of actual advertisers. The fraudulent activity spanned approximately nine years, from April 2015 to December 2025.

The company estimates the scandal could reduce its operating income by ¥50 billion. Approximately ¥33 billion in funds were reportedly disbursed to external parties as agency fees as part of the scheme. KDDI postponed the release of its third-quarter earnings report on Friday, February 6, 2026, citing the ongoing investigation.

Investigation and Response

In response to the allegations, KDDI established a special investigation committee comprised of independent experts, including external attorneys and a certified public accountant from Deloitte Tohmatsu LLC. The committee’s mandate includes a thorough fact-finding mission, an assessment of the impact on consolidated financial statements, and the development of preventative measures to avoid similar incidents in the future. A report is expected by the end of March 2026.

Chief Executive Hiromichi Matsuda acknowledged the severity of the situation, stating in a press conference that “this incident has seriously damaged the credibility of KDDI as a whole.” The nearly two-hour press conference underscored the seriousness with which the company is treating the matter.

Broader Implications for Japanese Corporate Governance

This scandal is not an isolated incident. It follows similar accounting irregularities at other prominent Japanese companies, including Nidec, the world’s largest motor manufacturer, and Chubu Electric. Nidec faced a warning of potential delisting due to improper accounting practices, while Chubu Electric was found to have fabricated seismic data related to a nuclear plant. These instances are occurring as the Tokyo Stock Exchange (TSE) attempts to strengthen corporate governance standards to attract foreign investment and improve the valuation of Japanese companies.

The TSE has been pushing for reforms aimed at increasing transparency and accountability within the Japanese market. The recent spate of scandals raises questions about the effectiveness of these efforts and the depth of cultural issues within some Japanese corporations. The pressure to maintain a perception of consistent growth and success may be contributing to a willingness to engage in questionable accounting practices.

Financial Context and Market Reaction

KDDI’s flagship mobile brand is ‘au’. The company is one of Japan’s “big three” telecom providers, alongside NTT Docomo and SoftBank. The scale of the alleged fraud – ¥246 billion – represents a significant portion of KDDI’s revenue and could have a material impact on its financial performance. While the full impact remains under assessment, the company has pledged full cooperation with the investigation and will disclose the findings once confirmed.

The delay in the release of KDDI’s third-quarter results is likely to create uncertainty in the market. Investors will be closely watching the investigation’s progress and the company’s response. The scandal could also lead to increased scrutiny of other Japanese companies and a renewed focus on corporate governance issues. The incident highlights the risks associated with investing in companies where transparency and accountability are lacking.

Looking Ahead

The special investigation committee’s report, due by the end of March, will be crucial in determining the full extent of the fraud and the appropriate course of action. The findings could lead to disciplinary measures for those involved, as well as changes to KDDI’s internal controls and accounting procedures. The scandal serves as a stark reminder of the importance of robust corporate governance and the need for companies to prioritize ethical behavior and transparency.

The repercussions of this scandal are likely to extend beyond KDDI, potentially impacting investor confidence in the broader Japanese market. The TSE’s efforts to improve corporate governance will be under increased pressure, and the need for greater oversight and accountability will be more apparent than ever.