Japan Megabanks MUFG, Mizuho, and SMBC Establish Joint Stablecoin Council

Japan's three largest banks have moved from exploratory talks into formal infrastructure deployment, establishing a joint stablecoin council targeting live transactions by March 2027.

Mitsubishi UFJ Bank (MUFG), Mizuho Bank, and Sumitomo Mitsui Banking Corporation (SMBC) published a joint press release Wednesday announcing the council formation and the fiscal-year target.

Under the proposed structure, the three banks will act as joint settlors on a trust contract, with trust banks serving as trustees to issue the stablecoin. The three institutions have been conducting joint practical discussions since Japan's Financial Services Agency approved their participation in the FSA FinTech Experimental Hub and Payment Infrastructure Project (PIP) in November 2025.

From Study to Council

The new body carries an operational mandate: build out infrastructure, finalize regulatory scheme design, and establish governance before the target launch window closes at the end of Japan's fiscal year on March 31, 2027.

The trust-based issuance structure distributes operational responsibility across all three banks. Each bank serves as co-settlor on the trust contract. The trust bank holding the underlying assets acts as trustee. That joint arrangement also frames the governance model for the council itself, with no single institution holding a controlling position.

The issuance vehicle is designed within Japan's trust law framework. Under that structure, each bank co-commits assets to the trust rather than issuing its own proprietary instrument. The resulting stablecoin is classified as an electronic payment instrument under Japanese law, a category created by the 2023 Payment Services Act amendments.

The press release notes that the council will examine how other financial institutions and related parties might participate in the future. A clause on open participation leaves room for the architecture to expand beyond the founding three, though the announcement makes no commitment on timing or criteria for onboarding additional members.

Japan's Regulatory Backdrop

The FSA's FinTech Hub approval in November 2025 provided the formal regulatory backing for the joint experimental work. With the 2023 Payment Services Act amendments already in place as the statutory foundation, the council has a defined legal pathway that several Asia-Pacific peers are still building from scratch.

MUFG is Japan's largest bank by total assets and ranks among the largest globally. Together the three banks account for a significant share of Japan's corporate banking infrastructure and cross-border trade finance flows. No comparable three-way consortium has previously committed to jointly issued infrastructure at this tier in any major economy outside the United States.

Cross-Border Settlement Implications

The press release frames the initiative around "advancing payment infrastructure" using blockchain technology, citing active domestic and international discussion around tokenized deposits and stablecoins.

The dominant stablecoin rails in cross-border settlement are currently USD-pegged instruments. A regulated yen-denominated stablecoin from banks of this scale would add a sovereign-currency alternative to that infrastructure, particularly relevant for Japan's trade corridors with Southeast Asia, South Korea, and China.

The total stablecoin market currently sits at more than $300 billion in circulating supply, per DefiLlama, with USD-pegged tokens accounting for nearly all of that. Tether's USDT alone exceeds $186 billion. A major Asian-currency stablecoin has not yet emerged to challenge that concentration in cross-border flows.