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Block #9

B9-2026-06 · Regulation

The digital euro, dissected

What the ECB is actually building, what the legislation fixes in law, and what it means for your bank account, your privacy and the crypto market

Regulation proposal

28-06-2023

Preparation phase completed

10-2025

Holding limit discussed

±3.000 €

Interest on balances

0%

Abstract

The digital euro is neither a cryptocurrency nor an investment. It is retail central bank money in digital form: a claim on the European Central Bank instead of on a commercial bank, issued inside the euro area and intended as a public alternative alongside cash. The ECB completed its preparation phase in October 2025 and moved to the next stage; the legal basis rests on the regulation proposed by the European Commission in June 2023, which at the time of writing still has to be adopted by the European Parliament and the Council.

Two design choices determine almost everything: a per-person holding limit and the waterfall mechanism that automatically sweeps amounts above that limit into your ordinary bank account. Together they are meant to prevent deposits from draining out of the banking system. The order of magnitude usually cited is a few thousand euro per person; the exact number will only be fixed by the ECB after the regulation is adopted, in dialogue with the legislator.

Privacy is the politically most sensitive point and at the same time the most misunderstood. The design foresees offline use with a privacy level the ECB compares to cash: in that mode payment data stay between the two devices. Online payments are not anonymous; they run through your bank or payment service provider, which applies anti-money-laundering law exactly as today. The ECB states it would not be able to link personal data to individual users. That is a design promise embedded in law and technology, not a law of nature, and deserves continued scrutiny.

For the crypto market the digital euro is not a competitor to bitcoin but a direct neighbour of euro stablecoins. A free legal-tender instrument accepted across the euro area shrinks the room for private euro tokens in everyday payments, while those tokens keep their role in on-chain trading and DeFi, where the digital euro is not heading for now.

Key findings

  • The digital euro is a claim on the ECB, not a bank deposit and not an investment: it bears no interest and carries no price risk.
  • The holding limit plus the waterfall mechanism are the heart of the design; without them a bank run could unfold digitally within hours.
  • Offline payment is the only component with a privacy level the ECB compares to cash; online payment explicitly is not.
Where does the digital euro sit among the other forms of money?Fig. 1
0255075100100/100Contant82/100Digitale euro61/100Bankgeld34/100Stablecoin12/100Bitcoin

Indicative score across four properties combined: public issuer, no price risk, offline usable and accepted in shops. Higher is closer to cash.

What the digital euro is and is not

Today your money exists in two forms. Cash is central bank money: a banknote is a claim on the central bank and stays valid even if your bank fails. The balance in your account is something else: a claim on a commercial bank, protected up to one hundred thousand euro by the deposit guarantee scheme. The digital euro adds a third form: central bank money in digital form, usable directly in an app or on a card, without needing a bank in between for its validity.

It is explicitly not a cryptocurrency. There is no fixed maximum supply, no open blockchain on which anyone can issue, no price that moves. One digital euro is one euro, today and in ten years, with the same inflation as any other euro. Anyone treating the digital euro as an investment product has misread the design: no interest is foreseen, precisely because the ECB does not want people parking savings in it.

Nor is it a replacement for cash. Both the Commission and the ECB repeat that notes and coins remain legal tender; the proposal is even accompanied by a second legislative proposal anchoring the acceptance of cash in law. Whether that promise holds in practice depends on retailers and banks, not on the regulation alone.

  • Yes: central bank money, legal tender, free basic use, offline capable.
  • No: interest, price risk, capped supply, open blockchain, investment.
  • No: replacement for cash; notes remain legal tender.

Holding limit and waterfall: why the ceiling exists

The biggest risk of digital central bank money is not technical but financial. If everyone can convert unlimited amounts into a risk-free claim on the ECB, a bank in a crisis loses its deposits in hours instead of days. Hence the design includes an individual holding limit. The ECB will set it after the regulation is adopted; public debate cites an order of magnitude of around three thousand euro per person, but that figure is a working hypothesis, not a decision.

The waterfall mechanism makes that limit liveable. If you receive an amount that pushes you over the limit, the excess flows automatically to your linked bank account. Conversely, the reverse waterfall tops up your balance from that same account when you want to pay more than your wallet holds. In practice: you rarely notice the limit when paying, only when parking money.

For companies the picture differs. Merchants may receive digital euro but not hold them: by design their receipts pass through to a bank account. That keeps the digital euro a payment instrument rather than a corporate savings account at the central bank.

  • Per-person holding limit, definitively set by the ECB after adoption.
  • Waterfall: excess moves automatically to your bank account.
  • Reverse waterfall: top-up from your bank account during payment.
  • Merchants receive but do not hold.

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Block #9 research is information, not investment advice. Figures apply as of the stated date.

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