Japan is preparing to launch the world's first trust-bank-backed yen stablecoin in Q2 2026, opening a parallel regulatory path that differs sharply from the US GENIUS Act framework and the EU's MiCA regime. SBI Holdings and Startale Group disclosed on December 15, 2025 that their jointly develope...
"The transition to a Token Economy — where all real-world assets are tokenized and tokens permeate society as a means of settlement — is now an irreversible societal trend." — Yoshitaka Kitao, Chairman and CEO, SBI Holdings
Japan is preparing to launch the world's first trust-bank-backed yen stablecoin in Q2 2026, opening a parallel regulatory path that differs sharply from the US GENIUS Act framework and the EU's MiCA regime. SBI Holdings and Startale Group disclosed on December 15, 2025 that their jointly developed instrument, JPYSC, will be issued and redeemed by SBI Shinsei Trust & Banking under Japan's Type III electronic payment instrument category, with 1:1 yen backing held in segregated trust accounts. Circulation is handled by SBI VC Trade, a Financial Services Agency-licensed crypto exchange.
On a parallel track, Japan's three megabanks — Mitsubishi UFJ Financial Group, Sumitomo Mitsui Banking Corporation and Mizuho — launched a joint proof-of-concept on March 5, 2026 for a unified yen stablecoin issued on the Progmat Coin platform. The FSA granted the consortium the first-ever "Payment Innovation Project" status, an accelerated regulatory track. Monex Group projects the yen stablecoin market could reach approximately 3.7 trillion yen ($24 billion at current FX) by 2030.
The Japanese model inverts the US approach. Rather than permitting non-bank issuers with federal or state prudential oversight, Japan confines issuance to regulated trust banks operating under existing Payment Services Act and Banking Act rules. Reserves are not merely required to exist — they are structurally segregated in bankruptcy-remote trust vehicles from day one. The design prioritizes institutional settlement and cross-border B2B flows over retail payments, positioning yen stablecoins as wholesale financial infrastructure rather than a consumer product.
SBI Holdings and Startale Group signed a memorandum of understanding in December 2025 and subsequently formalized a joint development agreement for JPYSC. SBI committed approximately 8 billion yen (roughly $52 million at prevailing rates) in additional investment to Startale to accelerate development, following a $63 million Series A round in which Sony Innovation Fund also participated.
The operational split is defined as follows. SBI Shinsei Trust & Banking, a subsidiary within the SBI Shinsei Bank group, handles issuance and redemption. SBI VC Trade, already licensed as a crypto asset exchange under FSA rules, handles circulation and on-chain distribution. Startale leads technical development, including smart contract deployment and on-chain security architecture. SBI manages compliance, institutional onboarding and distribution to financial counterparties.
JPYSC is designed from inception to meet FSA requirements rather than retrofitting compliance after launch. The initial use cases publicly identified are cross-border institutional settlement, corporate treasury management, on-chain settlement of tokenized assets, and — in Startale's framing — payments between autonomous AI agents.
"Our yen-denominated stablecoin is not just a means of everyday payment — it will play a central role in a fully on-chain world," said Sota Watanabe, CEO of Startale Group, in the launch disclosure. "We see enormous potential in enabling payments between AI agents and powering distributions for tokenized assets."
Japan's Payment Services Act, as amended in 2022 and 2023, created a three-tier classification for electronic payment instruments. Type I covers deposit-backed instruments issued by licensed banks. Type II covers funds transfer service provider instruments. Type III, the category under which JPYSC is registered, covers trust-backed instruments where reserves are held in a segregated trust structure at a licensed trust bank, with issuance and redemption handled through the trust.
The Type III classification imposes three material constraints relative to US stablecoin models:
The constraints cap the yield that can be passed to holders but materially reduce counterparty risk. No Type III instrument has failed since the framework took effect. There is also no analog in the US or EU regimes to the mandatory trust-bank issuance path.
On March 5, 2026, Mitsubishi UFJ Financial Group, Sumitomo Mitsui Banking Corporation and Mizuho Financial Group launched a joint proof-of-concept for a unified yen stablecoin on the Progmat Coin platform. The initiative became the first project granted Payment Innovation Project status by the FSA, an accelerated supervisory track that allows phased live deployment during the testing window.
Progmat Coin, originally incubated inside MUFG and since repositioned as neutral industry infrastructure, provides the underlying issuance rails. Mitsubishi Corporation, Mitsubishi UFJ Trust and Banking Corporation and Progmat Inc. are additional consortium members. The consortium has publicly targeted issuance of approximately 1 trillion yen (approximately $6.5 billion) in stablecoins over a three-year horizon, with US dollar integration scheduled for late 2026.
Progmat CEO Tatsuya Saito has characterized the platform as "neutral infrastructure that enables the issuance of various brands of stablecoins with the greatest flexibility of use and the least risk of de-pegging." The distinction between the megabank approach and JPYSC is notable: the megabanks are building a shared multi-issuer platform, while SBI is deploying a single-issuer vertically integrated stack.
| Feature | Japan (Type III) | US (GENIUS Act) | EU (MiCA) | |---|---|---|---| | Issuer type | Trust bank only | Bank or non-bank with federal/state license | E-money institution or credit institution | | Reserve assets | Yen deposits, segregated trust | Cash, T-bills, reverse repo | Cash, sovereign bonds, low-risk MMFs | | Bankruptcy treatment | Trust-segregated, direct claim | Depositor-like priority (proposed) | Segregated at credit institution | | Yield to holders | Prohibited in practice | Prohibited (proposed) | Prohibited (Article 50) | | Retail distribution | Restricted through licensed exchanges | Permitted | Permitted with disclosure | | Primary intended use | Institutional / cross-border | Retail and institutional | Retail payments |
The Japanese model is structurally the most conservative of the three. It is also the only one in which reserves are held outside the issuing entity's balance sheet as a matter of legal form rather than prudential rule. The trade-off is distribution: JPYSC and the megabank instrument will not be freely tradable on permissionless venues the way USDC, USDT or EU-licensed EURe are.
Under the Type III structure, fee flows differ materially from the US stablecoin model. Tether and Circle earn the full yield on their reserve assets — in 2025, Circle disclosed approximately $1.7 billion in interest income on USDC reserves and Tether reported $13.7 billion in Q1 2025 net income driven largely by T-bill yields. Under Japan's Type III framework, yield on the trust reserves flows primarily to the trust bank and is not available to the issuer at the same scale.
The implication is that Japanese yen stablecoin economics are fee-based rather than float-based. Revenue is expected to come from transaction fees, institutional service charges and FX conversion spreads, not from capturing interest on held cash. That structurally limits the profitability ceiling but also eliminates the principal risk that yield-chasing drives issuers to hold duration mismatched or credit-exposed reserves.
For the broader Web3 economic picture, this matters. The foundational webthreepedia analysis of blockchain value flows identified subsidy-driven revenue as 85-90% of the ecosystem's total. A fee-based stablecoin model anchored to regulated trust banks represents one of the few structurally self-sustaining revenue lines that does not depend on token inflation, VC subsidy or extractable-value mechanisms. It is also one of the few in which end-user cost is fully transparent.
The global stablecoin market reached $317 billion in total supply on April 4, 2026, with $1.36 billion in weekly net inflows reported by Crypto Times. Stablecoins accounted for approximately 75% of all cryptocurrency trading volume in Q1 2026, with total transaction volume exceeding $28 trillion on the quarter — a figure that exceeds annualized Visa and Mastercard throughput.
Yen stablecoins represent a trivial fraction of this total today. The Bank of Japan reported in early 2026 that Japan-issued yen stablecoins held less than $50 million in aggregate supply. Monex Group's internal projection of a 3.7 trillion yen ($24 billion) market by 2030 implies a compound annual growth rate of roughly 470% from the current base — aggressive, but consistent with the scale of institutional cross-border yen flows.
The addressable market is bounded on three sides:
Offsetting these constraints: yen remains the world's third reserve currency by SWIFT share, Japan runs a persistent trade surplus that generates continuous outbound yen settlement demand, and the FSA has signaled willingness to approve cross-border use through bilateral arrangements with other regulators.
Japan has chosen a slower, narrower path to stablecoin deployment than the US or EU. The Type III framework forecloses most of the features that have driven USDC and USDT to $300 billion in combined supply — retail distribution, non-bank issuance, reserve yield capture — in exchange for a structural elimination of the de-pegging and counterparty risks that have periodically disrupted dollar stablecoins.
The test for the Japanese model is whether fee-based revenue can sustain issuance at scale once the initial regulatory subsidy and institutional enthusiasm fade. Circle's $1.7 billion in 2025 reserve yield will not be reproducible under Type III. JPYSC and the megabank instrument must instead earn their way through transaction fees and treasury services — a harder commercial path, but one that is more consistent with the economic-value-first framework that underpins a self-sustaining Web3 infrastructure layer. Whether Japanese corporates and offshore yen counterparties will pay those fees at volume is the question that Q2 2026 will begin to answer.