The European Central Bank has formally called on merchants across the euro area to join a 12-month digital euro pilot program set to begin in the second half of 2027, marking the latest step in the institution's effort to prepare a possible launch of the currency later in the decade.

The announcement, made on September 15, 2026, invites e-commerce and mobile-commerce businesses to take part in a large-scale controlled test of a beta version of the currency, laid out in an official ECB call for merchant participation. The beta digital euro will not be legal tender. It is designed to closely resemble the proposed final product and will be used only within the boundaries of the pilot. The digital euro is the euro area's central bank digital currency (CBDC) — a retail instrument meant for the same everyday transactions the pilot is built to rehearse, from online checkout to in-store payment and mobile commerce — which is why the ECB is recruiting the business side before any launch decision has been made.

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How the Pilot Will Work

Staff from the ECB and national central banks will act as consumers during the test. They will make person-to-person transfers, shop online, pay at physical stores and complete mobile-commerce transactions, allowing the institution to observe how the beta currency behaves across the full range of payment types it is intended to serve.

The ECB is working with the 19 national central banks of the euro area on the project. In July, it also selected 36 banks and payment providers for the testing program, including Deutsche Bank, Revolut, BNP Paribas, CaixaBank and ING. Bringing merchants into the mix extends the test beyond bank and payment-provider infrastructure to the point of sale, where the currency would actually change hands.

Merchant Acceptance Is the Commercial Challenge

Getting merchants on board is viewed as a practical challenge as much as a technical one. Analysts say the currency will only work if enough businesses accept it, since consumers will otherwise have nowhere to spend it. It is the classic two-sided market problem familiar from past payment rollouts: consumers have little reason to hold a currency merchants do not take, and merchants have little reason to integrate one few customers carry.

Isadora Arredondo, vice president of global policy at Hedera, said the harder task is making the project work commercially. She told CoinDesk that merchants may need financial incentives to participate in sufficient numbers. One option on the table is lower payment processing fees for merchants who accept digital euro transactions, a measure that may be needed to drive adoption at scale. Without enough merchant acceptance, consumers could face friction when trying to spend the currency.

The ECB has also been working to lower the technical barriers to entry. In April, it signed standards agreements with the European Cards Payment Cooperation, nexo standards and the Berlin Group so digital euro payments can run on existing European payment infrastructure.

Legislative Hurdles Remain Before the 2029 Target

A final digital euro is not yet approved. Issuance requires EU legislation to be passed and a separate decision by the ECB Governing Council.

The European Parliament's Economic and Monetary Affairs Committee approved its position on the digital euro package in June, but full legislative work is not finished. If legislation passes, the ECB is aiming for readiness by2029. The pilot is designed to give the ECB real-world data to inform that decision. The sequencing creates a timeline to watch: a pilot running from the second half of 2027 into 2028 would deliver findings ahead of the ECB's 2029 readiness goal, but only if EU legislation clears first.

Stablecoins Form the Backdrop to the Push

ECB officials have pointed to the rise of dollar-backed stablecoins as part of the reason for pressing ahead. ECB board member Isabel Schnabel noted in June that the global stablecoin market was nearing $300 billion, with Tether's USDT and Circle's USDC making up roughly 90% of that market.

Euro-denominated stablecoins have grown but remain marginal by comparison. Data from July showed eight MiCA-compliant euro stablecoins held a combined market cap of $673.9 million, up 128% year-over-year, but still less than 1% of the total stablecoin market.

ECB President Christine Lagarde has argued that private stablecoins pose risks to European monetary policy and that a central bank-led solution is the better path forward.