Japan’s Three Megabanks Successfully Test Yen Stablecoin for Cross-Border Payments

Japan’s three biggest banks just wrapped a yen stablecoin pilot. Mizuho, MUFG, and SMBC ran the test jointly, targeting cross-border payment settlements — and now they’re pointing toward live transactions.

The trial ran from July 17 to 23, 2026. Seven days, three megabanks, two additional partners, and one shared yen token. Mitsubishi UFJ Trust and Banking served as trustee throughout the process, while TISI Inc. handled the technology side. The whole thing operated under Japan’s Payment Services Act, which kept it legally clean and compliant from day one. The primary focus was cross-border settlements between the Japanese banks and Mitsubishi Corporation’s international offices — a real-world use case, not some abstract sandbox exercise.

Not a small deal.

What the Pilot Actually Tested

The banks ran the full transaction cycle. Issuance, transfer, redemption — all of it. And it worked. Anti-money laundering checks and counter-terrorist financing requirements were baked into the process, which matters a lot when regulators are watching. The pilot was also limited to users who cleared know-your-customer verification. No KYC, no access. Pretty strict for a test phase, but that’s probably the point — show the regulators you’re serious before you go live.

There was no cap on how many tokens could circulate among those verified users. That’s worth noting. It let the banks stress-test the system’s actual capacity rather than artificially throttling volume to make the numbers look clean.

Each participant had a distinct role. The banks handled issuance and settlement. TISI Inc. built and maintained the blockchain infrastructure that SMBC plugged into. That division of labor seems to have been intentional — avoid single points of failure, keep accountability clear. Whether that structure survives the jump to live transactions is unclear, but it held up during the pilot.

The Financial Services Agency’s FinTech PoC Hub and Payment Innovation Project backed the initiative. The FSA selected it in November 2025 as part of a broader push to advance fintech and payment innovation across Japan’s financial sector. Getting that kind of institutional support early probably made regulatory sign-off a lot smoother.

See also: Tokenized Real-World Assets Surge, But Investor Demand Remains Stagnant

Governance Work and the Road to Fiscal 2026

Back in June, the banks formed a joint council specifically to tackle governance questions ahead of the real-money phase. No details yet on exactly what the council has worked through, but its existence basically confirms the banks know the hard part isn’t the technology — it’s the rules around who controls what when things go wrong.

Live transactions are targeted for fiscal 2026. That fiscal year starts in April 2026, so the window is already open. The banks didn’t specify a more precise launch date, and no announcement has come yet on that front.

Cross-border payments have been a stubborn problem for banks globally. Traditional correspondent banking is slow, expensive, and opaque. Stablecoins — especially ones issued by regulated institutions under a clear legal framework — are one of the more credible proposals for fixing that. Japan isn’t alone in exploring this. Several central banks and large financial institutions across Asia and Europe have run similar pilots over the past few years. But a joint issuance model among three of the world’s largest banks, operating under a national payments law, is a fairly specific template. Most pilots involve one institution or a central bank. Three competing megabanks co-issuing a single token is a different kind of bet.

The joint issuance structure is probably the most interesting part of all this. Banks don’t typically like sharing infrastructure with direct competitors. The fact that Mizuho, MUFG, and SMBC agreed to co-issue a shared token — and that each took on distinct operational roles rather than duplicating effort — says something about how seriously they’re treating the cross-border payments problem.

Whether the model scales is another question. A six-day pilot with a defined user pool and a single corporate counterparty in Mitsubishi Corporation is a long way from open, high-volume international settlement. The governance council will have a lot to figure out before that gap closes.

More context: Multiliquid Secures $8M from Polychain to Streamline Tokenized Asset Settlements

And the blockchain infrastructure from TISI Inc. still needs to prove it can handle real transaction loads, real volatility, and real errors without the safety net of a controlled test environment. No details on what stress levels the July pilot actually hit.

The FSA’s continued involvement is probably the clearest signal that Japan sees this as more than a one-off experiment. The Payment Innovation Project picked this initiative out of what was presumably a competitive field in November 2025. That backing doesn’t guarantee success, but it does mean the regulatory path forward is probably less rocky than it would be for a purely private effort.

The joint council met in June. The pilot wrapped July 23. The fiscal 2026 live transaction window is now open.