Japan’s Three Megabanks Confirm Their Shared Yen Stablecoin Works in Pilot

Japan’s three largest banks said their shared yen-denominated stablecoin cleared a July pilot, keeping the country’s highest-profile digital-money project for corporate payments on track for live transactions by March 2027. Mizuho Bank, MUFG Bank and Sumitomo Mitsui Banking Corporation (SMBC), working with Mitsubishi UFJ Trust and systems provider TISI, published the results in a joint statement on October 16.

The announcement matters less for what it launches today than for what it proves: three rival megabanks that compete for deposits, lending and payments can run one shared token on a single trust structure instead of three incompatible ones.

Why three rival banks chose one token

The pilot grew out of Japan’s Financial Services Agency (FSA) Payment Innovation Project, which selected the effort in November 2025. Mizuho, MUFG and SMBC act as joint trustors, while Mitsubishi UFJ Trust serves as trustee, issuing the stablecoin as specified trust beneficiary rights under Article 2(9) of the Payment Services Act. That route is the vehicle Japan’s revised payments framework created for bank-issued stablecoins, letting several banks stand behind one token rather than each running its own issuance program.

The design assumes a token backed by bank deposits and circulating only between users who have passed bank identity checks, though the banks describe that structure as a current assumption that could change. A single yen token carries network effects for cross-border corporate payments, while three separate bank tokens would fragment liquidity and multiply anti-money-laundering work. The banks first outlined the plan in October 2025, when BlockchainReporter covered the original announcement.

What the pilot actually tested

Between July 17 and 23, the five companies tested cross-border settlement between Mitsubishi Corporation’s Japan and overseas bases, walking through the full issue-transfer-redeem cycle. They verified how a multi-trustor scheme should be operated, how AML and CFT controls hold up across different use cases, and whether the underlying systems work.

The result, published on October 16, confirmed the feasibility of the multi-bank joint-issuance model and the safety and reliability of the systems involved.

What still separates the pilot from live payments

The banks aim to start real transactions within fiscal 2026, which ends in March 2027, and to set up a joint council to continue the work, following a memorandum signed in June. But the pilot covered a single corporate use case, not retail or open circulation, and the release frames user protection, AML and CFT, cybersecurity and system stability as work still outstanding.

Adoption is not guaranteed either. Dollar stablecoins such as USDT and USDC still dominate global stablecoin flows, and Japan’s own yen-token field already includes trust-bank offerings such as SBI’s JPYSC. The test also centered on a single trading house’s cross-border flows, so it offers little evidence yet on how the token would perform across many corporate counterparties or at volumes that would challenge the dollar stablecoins. The March 2027 date is a target, not a committed launch.