Japan's three largest banks — MUFG, Mizuho, and SMBC — signed a memorandum of understanding on June 10, 2026, to issue a joint yen-pegged stablecoin by March 2027. The initiative, designated "Project Pax" by Japan's Financial Services Agency (FSA), targets ¥1 trillion (~$6.7 billion) in business-...
Japan's three largest banks — MUFG, Mizuho, and SMBC — signed a memorandum of understanding on June 10, 2026, to issue a joint yen-pegged stablecoin by March 2027. The initiative, designated "Project Pax" by Japan's Financial Services Agency (FSA), targets ¥1 trillion (~$6.7 billion) in business-to-business settlement volume by 2028. The three banks collectively manage assets exceeding $7 trillion and serve more than 300,000 corporate clients.
The project sits at the intersection of three converging forces: Japan's newly activated stablecoin regulatory framework (effective June 1, 2026), the ruling Liberal Democratic Party's formal endorsement of yen stablecoins for cross-border settlement, and a $315 billion global stablecoin market in which non-dollar tokens hold just 0.24% market share. Japan is now the first G7 economy to field a coordinated, regulator-supervised, multi-bank stablecoin issuance program built on public blockchain infrastructure.
On June 10, 2026, Mitsubishi UFJ Financial Group (MUFG), Mizuho Financial Group, and Sumitomo Mitsui Financial Group (SMBC) formalized their collaboration through a memorandum of understanding. The agreement establishes a voluntary council responsible for developing operational frameworks, governance structures, and technical standards for joint stablecoin issuance.
The token structure uses a trust arrangement: all three banks act as joint settlors, while a designated trust bank or equivalent institution holds the underlying reserve assets as trustee. Reserves will be backed by cash and Japanese government bonds (JGBs), with investment in short-term JGBs capped at 50% of holdings. This architecture separates reserve custody from the issuing banks' balance sheets — a structural distinction from deposit-backed models used elsewhere.
The first corporate user will be Mitsubishi Corporation, which plans to deploy the stablecoin for internal settlements across its more than 240 subsidiaries globally. The initial use case targets dividend flows, acquisition payments, and customer transactions, where current cross-border wire transfers impose both fee and time costs.
The consortium has set a target of ¥1 trillion (~$6.7 billion) in B2B stablecoin volume by 2028. To contextualize: Japan's domestic interbank settlement system, BOJ-NET, processes approximately ¥350 trillion annually. The ¥1 trillion target represents a small but meaningful share of corporate settlement activity.
The joint stablecoin will run on Progmat, a digital-asset infrastructure platform developed by MUFG in partnership with NTT Data and several regional banks. Progmat was originally built as an enterprise tokenization layer and has since expanded to support stablecoin issuance through its "Progmat Coin" module.
Progmat supports deployment across four public blockchains: Ethereum, Polygon, Avalanche, and Cosmos. This multi-chain design allows the token to settle across different networks depending on counterparty preferences and transaction requirements. In February 2026, Progmat announced a partnership with Ava Labs to migrate its legacy Corda Enterprise Ledger-based system to an Avalanche L1 blockchain by end of June 2026.
The shared infrastructure model is notable. Rather than each bank building separate tokenization stacks, the three institutions will rely on a single issuance framework. This reduces redundant development costs and creates a unified liquidity pool from day one. Binance Japan has separately been exploring stablecoin issuance on the Progmat platform since a September 2023 joint study with MUFG, though no product has launched from that partnership.
A U.S. dollar-denominated version of the stablecoin is planned to follow the yen launch later in 2027, according to reports from multiple outlets.
Japan's stablecoin framework has matured rapidly since 2023. Under the revised Payment Services Act (PSA), only three categories of licensed institutions may issue digital-money-type stablecoins: banks, money transfer service providers, and trust companies.
Two regulatory developments in 2026 created the conditions for the megabank initiative:
June 1, 2026: Foreign stablecoin rules activated. The FSA's revised enforcement ordinance classified trust-type stablecoins issued by foreign entities as "electronic payment instruments" under the PSA, provided they meet equivalency and supervision standards. Reserve assets must match the displayed currency denomination, be independently audited, and the issuer must maintain transaction suspension mechanisms for criminal misuse. This framework simultaneously opens Japan to foreign stablecoins (creating competitive pressure) and validates the regulatory template the megabanks will use domestically.
FSA "Payment Innovation Project" designation. The megabank consortium received PIP status from the FSA, following a November 2025 proof-of-concept under the agency's FinTech PoC Hub. This designation subjects the project to direct FSA oversight — a distinction that adds compliance burden but confers regulatory legitimacy that private-sector stablecoin issuers lack.
The cabinet also approved a draft amendment in April 2026 reclassifying cryptocurrencies as "financial products" rather than payment tools, signaling a broader reorientation of Japan's digital asset taxonomy.
The megabank stablecoin launches into a market where USD-pegged tokens control 99.76% of total stablecoin supply. According to CoinDesk data from May 2026, all non-dollar stablecoins — denominated in euros, Canadian dollars, yen, Singapore dollars, and other currencies — collectively account for approximately $771 million in supply, or 0.24% of the $315 billion stablecoin market. That share has actually declined from 0.26% in May 2021, even as absolute supply tripled.
The structural reasons for dollar dominance are well-documented. Tokenized U.S. Treasury debt totals $15.4 billion, approximately 11 times the $1.4 billion in tokenized non-U.S. government bonds. Most national currencies lack the international liquidity required to support global stablecoin adoption — only approximately 8 of roughly 180 global currencies trade with meaningful FX liquidity. As Coinbase's global stablecoin head noted: "The dominance became self-reinforcing early" due to liquidity dynamics.
Japan's approach does not attempt to displace the dollar. The megabank stablecoin targets B2B and intra-corporate settlement in yen-denominated corridors — supply chain payments within Japan and across Asian trading partners where yen invoicing is standard practice. The yen remains the third most-traded currency globally in traditional FX markets; the question is whether that status translates to on-chain settlement demand.
The megabank consortium enters a domestic market that already has three yen stablecoin issuers:
| Issuer | Token | Launch | Backing | Status | |--------|-------|--------|---------|--------| | JPYC Inc. | JPYC | October 2025 | Bank deposits + JGBs | First FSA-licensed yen stablecoin (November 2025). Target: ¥1T issuance in 3 years | | SBI Holdings / Startale Group | JPYSC | Q2 2026 (planned) | Trust bank-backed (SBI Shinsei Trust Bank) | $63M Series A from SBI and Sony. First trust bank-backed yen stablecoin | | Japan Blockchain Foundation | EJPY | May 2026 | — | Early stage |
The megabank token differs from these in scale and distribution reach. JPYC has first-mover status and a startup's agility; JPYSC has SBI's securities infrastructure and Sony's consumer technology reach. But none commands the combined corporate client base of 300,000+ enterprises that MUFG, Mizuho, and SMBC service through existing banking relationships.
The competitive dynamic mirrors the broader stablecoin market: issuer credibility and distribution networks matter more than technical differentiation. A stablecoin backed by $7 trillion in combined bank assets and supervised directly by the FSA occupies a different risk tier than a startup-issued token, regardless of identical regulatory licensing requirements.
On June 1, 2026 — nine days before the megabank MOU — Japan's ruling Liberal Democratic Party formally submitted a proposal to Finance Minister Satsuki Katayama calling for two measures: creating a legal framework for cryptocurrency ETF trading, and promoting yen-based stablecoins for cross-border settlement throughout Asia.
According to the LDP's blockchain technology promotion panel statement: "Crypto-ETFs would provide investors with easy-to-understand ways of investment." The party's Policy Research Council had approved a wider strategy in mid-May covering tokenized bank deposits, blockchain settlement infrastructure, and AI-driven financial services, positioning finance as Japan's "18th growth investment field" in a five-year strategy.
The LDP resolution is significant because it signals that the megabank stablecoin is not merely a corporate initiative but an instrument of Japan's broader economic policy. The explicit goal of promoting yen stablecoins for Asian cross-border settlement positions the token as a monetary sovereignty tool — a counterweight to the dollar's dominance of on-chain settlement.
The economic case for the megabank stablecoin rests on settlement cost reduction and working capital efficiency, not speculative demand.
Cross-border wire costs. According to World Bank data, the average cost of sending remittances to Japan is approximately 6.2% of the transaction amount. Corporate wire transfers through correspondent banking networks are cheaper per unit but carry fixed costs (SWIFT messaging fees, intermediary bank charges, FX conversion spreads) and T+1 to T+3 settlement delays. A yen stablecoin settling on Ethereum or Avalanche reduces these to gas fees and near-instant finality.
Working capital float. Mitsubishi Corporation, with 240+ subsidiaries, manages constant inter-entity cash flows. Settlement delays of 1-3 days on cross-border wires create working capital drag. Programmable stablecoins settling in minutes or hours free that float for productive use.
FX corridor efficiency. The yen-dollar corridor is the second most-traded FX pair globally. A liquid yen stablecoin paired with USD stablecoins on decentralized exchanges or institutional OTC desks could create 24/7 settlement without correspondent banking intermediation.
However, the constraints are real. On-chain yen stablecoin liquidity is currently negligible. DeFi liquidity pools for yen-denominated assets are sparse. Without critical mass in trading pairs and settlement volume, the stablecoin defaults to a closed-loop corporate settlement tool rather than an open financial instrument — useful, but limited in systemic impact.
The megabank MOU represents the most coordinated effort by traditional financial institutions to issue a sovereign-currency stablecoin on public blockchain rails. The initiative benefits from regulatory clarity (FSA PIP designation), political backing (LDP resolution), existing corporate distribution (300,000+ clients), and shared infrastructure (Progmat). The ¥1 trillion B2B target by 2028 is achievable if even a small fraction of existing corporate settlement flows migrate on-chain.
The structural challenge remains the same one facing every non-dollar stablecoin: bootstrapping liquidity in a market where dollar dominance is self-reinforcing. Japan's advantage is that yen-denominated trade flows within Asia provide a natural use case that does not require competing with the dollar for global reserve status — it requires only that Japanese corporations find on-chain settlement cheaper and faster than SWIFT wires for yen-invoiced transactions. Whether that threshold is met will determine if the megabank stablecoin becomes a monetary infrastructure layer or a tokenized bank transfer with extra steps.