Bison Bank Issues Portugal's First MiCA-Regulated Stablecoin Pair — EUB Pegged to the Euro and USB Pegged to the US Dollar Live as Electronic Money Tokens, Cuatrecasas Confirms Advisory on Monday 18 May 2026

Bison Bank has issued the first stablecoin pair domiciled in Portugal under the European Union's Markets in Crypto-Assets Regulation (MiCA) — the EUB token pegged 1:1 to the euro and the USB token pegged 1:1 to the US dollar — with the launch reading publicly on Monday 18 May 2026 through the advisory disclosure of Cuatrecasas, the Iberian law firm that ran the regulatory and product-structuring workstream for the Portuguese investment bank. Both tokens are structured as Electronic Money Tokens (EMTs) — the MiCA category that subjects the issuer to combined banking and e-money sectoral law on top of the MiCA token-specific regime — and target cross-border payment and treasury-management use cases for institutional and corporate clients.

The EUB / USB Token Pair

The product structure splits Bison Bank's stablecoin issuance into two parallel SKUs: EUB for euro-denominated transactions and treasury balances and USB for the dollar leg of the same workflow. Both tokens are Electronic Money Tokens in MiCA taxonomy — the regulatory subcategory that requires the issuer to be authorised either as a credit institution or as an electronic-money institution under EU law, with full 1:1 backing in low-risk reserve assets and on-demand redemption at par for the holder. Bison Bank's credit-institution licence — granted by the Banco de Portugal under the Portuguese banking-law framework — anchors the eligibility for the MiCA EMT track and removes the parallel e-money authorisation requirement that smaller fintech issuers face on the same product line.

The MiCA Layer and the Portuguese Banking Overlay

The MiCA Regulation — applicable in its EMT-specific provisions since 30 June 2024 across the EU single market — sets the perimeter on white-paper publication, reserve-asset composition, redemption rights, and supervisory passporting for stablecoins issued out of any Member State. Bison Bank's issuance reads against that EU baseline plus the Portuguese banking overlay — the Regime Geral das Instituições de Crédito e Sociedades Financeiras (RGICSF) — and the supervisory perimeter that the Banco de Portugal exercises on the issuer's prudential balance sheet. The Cuatrecasas advisory release flagged this dual frame explicitly: "this was a very exciting but complex operation, requiring alignment of traditional financial regulation with new MiCA challenges," partner Nuno Lima da Luz said in the firm's statement, the formulation that signals the difficulty was structuring how an existing credit-institution licence absorbs a MiCA EMT product wrap without triggering a second authorisation track.

The Cuatrecasas Workstream

The Cuatrecasas advisory team was led by technology-practice partner Nuno Lima da Luz and financial-services specialist Tomás Gomes da Silva, with academic input from Paulo Cardoso do Amaral — the Universidade Católica Portuguesa professor who has carried the firm's crypto-asset regulatory frame across Iberia. The advisory perimeter on a MiCA EMT issuance reads onto white-paper drafting, reserve-asset segregation, custody-arrangement structuring, terms-and-conditions for the redemption right, and the supervisory communication file with the Banco de Portugal — the package the firm signed off before Bison Bank flipped the issuance live. The Cuatrecasas release did not detail the issuance size, the reserve-asset composition or the custody bank for the EUR/USD backing.

The Bison Bank Franchise and the Crypto-Asset Track

Bison Bank is a Portuguese investment bank specialised in investment banking, custody services, corporate advisory and the crypto-asset services franchise that the bank has stood up alongside its traditional capital-markets business. The institution holds the Banco de Portugal credit-institution licence — the baseline authorisation that allowed Bison to take on the MiCA EMT product structure without a parallel e-money institution licence — and runs its crypto-asset operations under the supervisory regime that the BdP and CMVM jointly exercise on digital-asset service providers. The stablecoin pair fits squarely inside the bank's institutional-client positioning: the use case the issuer is framing is cross-border treasury, settlement and payment automation for corporates with EUR/USD leg exposure, not retail wallet distribution.

Why the First-in-Portugal Read Matters

EU stablecoin issuance under MiCA EMT to date has clustered in Ireland, the Netherlands and Luxembourg — the jurisdictions that absorbed the earliest non-bank e-money MiCA tickets in 2024 and 2025. Portugal joining the EMT-issuance map through a credit-institution route — rather than a pure e-money fintech route — is the distinctive structural feature of the Bison Bank launch: the dual prudential and conduct-of-business supervisory regime that comes with the credit-institution licence delivers a higher-rated reserve-asset frame than the e-money baseline. The signal value for the Portuguese fintech ecosystem reads onto the CMVM token-trust-mark workstream and the wider Lisbon fintech-hub positioning that the regulators have been calibrating across 2026.

What This Means for Expats

Cross-border payments: for residents and businesses with parallel EUR/USD treasury legs — freelancers invoicing US clients, families with cross-Atlantic remittance flows, businesses running cross-border supplier chains — a MiCA EMT pair issued by a Portuguese bank lowers the legal and counterparty-risk perimeter versus offshore stablecoin issuers; the redemption-at-par right backed by a Banco de Portugal-supervised reserve is the core structural protection.
Tax treatment: the Portuguese IRS frame treats EMT holdings inside the e-money regime — the tokens are not the cripto-ativos bucket the Categoria E and G rules target. Track the AT clarification once it surfaces, but the EMT pair sits closer to a euro/dollar bank deposit for tax-categorisation purposes than to a Bitcoin-class crypto-asset; BdP's 2025 fraud-complaint surge is the broader supervisory frame the issuance lands inside.
Eligibility: Bison Bank is positioned as an institutional and high-net-worth bank — the EUB/USB product line is likelier to surface to retail expats through downstream partners (payment processors, fintech wallets) than via direct on-boarding at the issuer level; check the bank's terms-and-conditions once the white paper is published.
Counterparty risk frame: the EMT regime puts your redemption claim on Bison Bank as the issuer and on the segregated reserve assets — the prudential supervision the BdP exercises on the issuer's balance sheet is the line of defence in a stress scenario.

What Happens Next

The Banco de Portugal will publish the issuer's MiCA white paper through its dedicated notification register; the document specifies the reserve-asset composition, the redemption mechanics and the custody arrangements, so the first-tier transparency check is whether the white paper reads cleanly on those three perimeters. Distribution-layer announcements — which crypto-asset service providers, exchanges and payment processors integrate EUB and USB — are the second-leg signal that will determine whether the tokens scale beyond the bank's direct institutional book. The CMVM-BdP joint frame on token-issuance fee schedules and on-boarding requirements is the third regulatory file to watch as Portugal's MiCA-track stablecoin sector takes shape after this first credit-institution-led EMT issuance. On the financial-market and securities-regulation side of the file, our report on Portugal's tougher insider-trading and market-manipulation sanctions sets the latest reference.