Japan megabank yen stablecoin pilot clears cross-border test

Japan's three largest banks say their megabank yen stablecoin pilot has worked. Sumitomo Mitsui Banking Corporation, Mizuho Bank and MUFG Bank announced on Oct. 16 that a jointly issued yen-denominated stablecoin completed a full cycle of issuance, transfer and redemption in a cross-border payments test for Mitsubishi Corporation.

What happened

The proof of concept ran from July 17 to July 23, 2026, with Mitsubishi UFJ Trust and Banking acting as agent trustee and technology firm TISI building the system, according to SMBC's announcement. It was supported by the Financial Services Agency's FinTech PoC Hub after approval in November 2025.

Legally, the coins were issued as specified trust receivable rights under Article 2, Paragraph 9 of Japan's Payment Services Act, with the three banks as joint principal trustees. The money behind the coins is held as bank deposits, Trade Finance Global reported. Only verified users who pass identity checks can hold the coin, and there is no cap on how much can circulate because the banks expect large-scale use.

The blockchain came from SMBC and was built by TISI, which also linked the wallet software to the issuance system. The test covered payments between Mitsubishi Corporation's offices in Japan and overseas, operations with multiple issuers and entrustors, and anti-money laundering checks for different use cases.

Why it matters

A shared coin solves a reach problem. Because three banks issue it together, it can serve all of their corporate customers rather than splitting liquidity across three separate tokens. For multinationals, the promise is faster intercompany settlement and less manual reconciliation than correspondent banking. SMBC expects broader adoption to cut settlement times for cross-border transfers and group payments and to make operations more efficient.

It also positions Japanese banks against dollar stablecoins, which dominate global on-chain payments. A bank-issued yen token backed by deposits sits inside existing supervision, which may suit corporate treasurers more than a crypto-native issuer. The megabank yen stablecoin pilot also tested how to run a coin with several issuers and entrustors, the hardest operational piece of a shared model. Our earlier report on the Japan FSA TradeWaltz stablecoin pilot covered the trade-settlement side of the same push.

The banks were careful on design, though. SMBC said the structure is the one "currently assumed" and may change, and the stated priorities are user protection, cybersecurity and system stability.

Consumer understanding is still thin across the region. A Visa survey of 14,250 consumers in 14 Asia-Pacific markets found only 6% described stablecoins accurately, though 46% said they were likely to use them in the next five years, Trade Finance Global reported.

What's next

The next step is live use. In June, the banks announced plans to launch live transactions of the three-bank jointly issued stablecoin in fiscal 2026 and set up a council to examine related issues. The new release says they will now work through remaining issues before practical implementation and keep talking with regulators in Japan and abroad. The group has run related tests before, including a proof of concept announced in February and the TradeWaltz trade-settlement trial announced on Sept. 29.

Global banks are moving in parallel, from Goldman Sachs to Wells Fargo, as our coverage of Wall Street banks tokenization showed. If the megabank yen stablecoin pilot turns into a live product in fiscal 2026, corporate users would get a yen token backed by all three of Japan's largest lenders.