（Original article in Japanese by Makoto Shibata was published for FinTech Journal on July 26, 2026） https://www.sbbit.jp/article/fj/186081

In July 2026, major Japanese credit card payment processing agency ZENTOSHIN (全東信) collapsed with liabilities of approximately ¥125.9 billion—marking the largest bankruptcy in Japan in 2026. The downfall exposed structural blind spots in Japan’s cashless payment infrastructure, triggering supply-chain failures for small merchant businesses and financial losses for regional lenders.

1. Scope of the Crisis & Downfall

• Impact on Merchants: Rooted in restaurant cooperatives, ZENTOSHIN attracted small merchants with lenient screening and rapid payout options (e.g., payouts twice a week). Its sudden bankruptcy froze millions of yen in daily merchant sales, leaving small restaurants unable to pay rent, suppliers, or staff, leading to severe liquidity crises.

• Hits to Regional Financial Institutions: 63 financial institutions were exposed. Small regional lenders (regional banks, Shinkin banks, and credit cooperatives) face non-recoverable debt from ZENTOSHIN, including Kinki Sangyo Credit Cooperative (¥22 billion), Tokyo Star Bank (¥8 billion), and Towa Bank (¥8 billion).

• 20 Years of Accounting Fraud: ZENTOSHIN masked insolvency by overstating cash balances by ¥17 billion, creating ¥15.4 billion in fictitious receivables, overvaluing goodwill by ¥8.8 billion, and concealing ¥21.7 billion in unpaid merchant settlements. While reporting positive net assets of ¥2.5 billion, its actual financial state was a massive negative net worth of ¥60.5 billion.

2. Five Reasons the Fraud Went Unnoticed for 20 Years

• Complex Flow of Funds: The constant, high-volume flow of funds between card companies, processing agencies, merchants, and banks made it difficult for auditors to distinguish between ZENTOSHIN’s corporate cash and temporary merchant funds.

• Padding Bank Balances: ZENTOSHIN took advantage of borrowing across 63 different regional institutions, exploiting the lack of inter-bank balance verification to inflate deposit records undetected.

• Chain of Blind Trust: Card companies, banks, and auditing entities operated under the assumption that other parties were conducting rigorous oversight, leaving a void in comprehensive oversight.

• Lending Competition Among Regional Banks: Struggling with low interest rates, regional banks aggressively sought borrowers, ignoring thorough due diligence out of fear of losing business to competitors.

• Private Company Regulatory Gap: As an unlisted entity, ZENTOSHIN was exempt from public disclosure and strict auditing under the Financial Instruments and Exchange Act, allowing management to hide fraud.

3. Structural Vulnerabilities in Payment Agencies

• Absence of Segregated Fund Management Rules: Unlike securities or crypto exchanges, Japanese law (e.g., the Payment Services Act) did not strictly require payment processors to segregate held merchant funds from corporate operational cash. This allowed ZENTOSHIN to misappropriate merchant funds to cover operating losses.

• Disguising Held Funds as Corporate Assets: Because payment processors naturally hold large daily cash flows, banks failed to spot artificially inflated bank balances as abnormal.

• Shifting Risks to Vulnerable Small Businesses: When a processor fails, end merchants bear the brunt of the burden, forfeiting their own sales without insight into the processor’s financial health.

4. Key Regulatory Reforms & Global Comparisons

In response to the crisis, Japanese regulators (Financial Services Agency and METI) and the banking sector are considering stricter legal frameworks:

• Mandatory Fund Segregation and Trust Safeguarding: Requiring processors to keep merchant funds in trust accounts to guarantee full, immediate returns to merchants upon processor bankruptcy.

• Licensing & Mandatory External Audits: Transitioning payment processing from a open business model to a registration/licensing system with capital adequacy minimums and mandatory external CPA audits for large processors.

• Regulation of Early Payout Schemes: Applying stricter credit management or reserve liquidity requirements for agencies offering accelerated payout options.

• Alignment with Global Standards: Following models like the EU’s PSD2/EMD2, the UK’s FCA Safeguarding rules, and Singapore’s Payment Services Act, which mandate strict segregation, daily reconciliations, and independent trust accounts for payment institutions.

• Joint Accountability for Card Networks & Acquirers: Holding primary acquirers and major card brands (Visa, Mastercard, JCB) jointly responsible for monitoring payment agency compliance.

Conclusion

The collapse of ZENTOSHIN highlights a crucial mismatch: payment processors have become critical social infrastructure, yet legally they were treated as basic IT service providers. Moving forward, regulatory updates will reclassify payment processing as a heavily regulated financial service to protect public assets and maintain faith in the cashless economy.