Japan’s three largest banks, MUFG, SMBC and Mizuho, have announced a joint initiative to issue a yen-pegged stablecoin under a regulated trust model. Organized as Project Pax, the effort targets issuance by the end of fiscal 2026, in March 2027, and aims to support ¥1 trillion in business-to-business volume by 2028.
The project marks a shift in stablecoin strategy from retail trading and DeFi activity toward bank-grade programmable money. For corporate treasury teams and market participants, the initiative signals a move toward regulated tokenized settlement inside Japan’s banking system.
Project Pax Builds Around a Trust Model
Project Pax is structured around a designated trust bank that would serve as issuer, maintain 1:1 backing and handle regulatory compliance. MUFG, SMBC and Mizuho would support distribution, governance and integration into existing payment rails, creating a separation between issuance, custody and bank-led distribution.
That structure is designed to preserve legal clarity for institutional counterparties. By separating the issuer role from distribution and integration, the consortium aims to reduce operational risk and align settlement expectations with established banking practices rather than open retail crypto flows.
The banks plan to develop APIs and onboarding processes that connect corporate ERP and treasury systems to the stablecoin rails. Those tools would support AML/KYC checks and licensing requirements within Japan’s supervisory framework, making compliance infrastructure part of the product architecture.
The consortium is also considering a U.S. dollar variant in due course. That would extend the project beyond domestic yen settlement, although the initial focus remains a bank-issued yen token for B2B and interbank use cases.
Japan Targets a Different Stablecoin Niche
The broader stablecoin market remains dominated by U.S. dollar tokens. Global trading volumes reached roughly $23 trillion in 2024, while dollar-pegged tokens accounted for about 99% of stablecoin activity with an approximate market capitalization of $225 billion, leaving yen-denominated institutional settlement as a narrower but strategic market gap.
Japan’s megabank initiative differs from existing yen stablecoin issuer JPYC Inc. Project Pax is being built for B2B, interbank and corporate treasury flows under a bank trust model, while JPYC launched earlier on public blockchains with a broader public-chain payments profile.
Backing and interoperability also separate the two models. Project Pax is expected to rely on a regulated trust structure with 1:1 bank deposits and likely high-quality liquid assets, while JPYC uses 1:1 backing through deposits and government bonds, giving the megabank project a more bank-network-oriented settlement design.
The project also reflects the fragmented global treatment of stablecoins. Different jurisdictions continue to classify the instruments under e-money, banking or securities frameworks, while Japan’s approach attempts to reduce legal uncertainty by building directly inside domestic stablecoin rules.
If Project Pax launches on schedule, it could give banks and corporates a regulated programmable settlement instrument for high-value payments. That could reduce settlement latency, lower operational friction and accelerate treasury automation through interoperable rails linking bank ledgers with tokenized settlement systems.
Adoption will depend on execution. Market participants will be watching integration timelines, licensing outcomes and cross-jurisdiction interoperability work to determine whether bank-issued stablecoins become a routine component of corporate payment stacks by 2028.
