CBDC
A central bank digital currency (CBDC) is money issued by a central bank in digital form as a direct liability of the central bank — like cash, unlike a bank deposit or an e-money balance, which are claims on private institutions. A retail CBDC would be held and spent by the public through wallets provided by banks and payment firms; a wholesale CBDC would settle between financial institutions on programmable infrastructure. The digital euro is in preparation.
- Also known as
- Central bank digital currency, Digital euro, Digital pound, Retail CBDC, Wholesale CBDC
- Used at
- retail payments (the design goal of the digital euro: a public means of payment usable everywhere in the euro area, online and offline, with privacy protections), wholesale settlement (tokenised reserves for settling tokenised securities and cross-border transactions — the BIS projects and the ECB's wholesale trials of 2024), and cross-border payments (multi-CBDC platforms such as mBridge)
- Binding
- legislation in each jurisdiction — the EU's digital euro regulation proposed in 2023 and under negotiation, with the ECB's preparation phase running to late 2025 and a decision to issue after that; the UK's design phase; China's operating rules; the US Executive Order of January 2025 prohibiting a federal CBDC and favouring stablecoins instead
- Typical design choices
- account-based or token-based; intermediated (banks and PSPs distribute and onboard, the central bank holds the ledger) or direct; holding limits (the digital euro's proposed cap around €3,000 per person, to protect bank deposits); remuneration (none, in every retail design); offline capability; privacy (the digital euro's offline mode designed for cash-like privacy, online transactions visible to the intermediary, not the central bank); and programmability (conditional payments by intermediaries, not programmable money by the state)
- Typical concerns
- disintermediation of banks if deposits migrate; the central bank as a competitor to private payment firms; surveillance; the cost of building distribution that banks and PSPs would bear; and whether a public digital currency solves a problem instant payments and private stablecoins have not
- Parties
- central banks, legislators, commercial banks and PSPs as intermediaries, the card schemes whose domestic dominance a digital euro is partly designed to reduce, merchants (who would accept it at regulated fees), and the public
How a CBDC works in practice
The digital euro's design: a citizen opens a digital-euro wallet through their bank or a payment institution, which performs the onboarding and KYC as it would for an account; the wallet holds digital euros up to the limit, funded from and defunded to a bank account automatically (a "waterfall" so that an incoming payment above the limit flows to the bank account); the citizen pays in shops and online with the wallet, through a standard the Eurosystem defines and every intermediary implements, and offline between devices with cash-like privacy for small amounts; merchants accept it under an obligation to accept legal tender, at fees capped by regulation; the Eurosystem runs the settlement ledger and sees no personal data online beyond what settlement requires. Intermediaries earn from the services around the wallet and from a compensation model; the scheme's rules, not a private network's, govern acceptance.
For fintech the implications run both ways. A payment institution becomes a digital-euro intermediary — a new product, new onboarding, new compliance, and a distribution role the regulation obliges banks to fill and allows PSPs to compete for. Card schemes and closed wallets face a public alternative with mandatory acceptance and capped fees. Stablecoin issuers face a public competitor for the euro-denominated on-chain money that tokenisation programmes need — the wholesale CBDC work is the more likely near-term reality, with tokenised central-bank money settling tokenised assets between banks. And the timelines are long: no major Western retail CBDC will circulate before the late 2020s, while instant payments and stablecoins are here. For a fintech, a CBDC is a scenario to plan for, not a product to build on yet; for a buyer, it is a risk factor in a card-scheme-dependent business and an opportunity in an intermediary-ready one.
For a payments fintech, the CBDC question is whether to be an intermediary when the time comes; for an investor, it is a long-dated policy risk to card and wallet economics and a long-dated opportunity in the infrastructure that will distribute it.
Example
A European payment institution with 3 million wallet customers builds a scenario plan for the digital euro in 2025. Assumptions: launch 2028 at the earliest, a €3,000 holding limit, mandatory merchant acceptance, capped merchant fees, and PSPs eligible as intermediaries. Analysis: 20% of the PI's domestic card volume could migrate to digital euro within three years of launch, cutting interchange-like revenue by €6 million a year; as an intermediary the PI could onboard its existing base at low cost and earn from account services, cross-selling and a compensation model, offsetting an estimated €4 million; the build would cost €8 million over two years. Decision: participate in the Eurosystem's intermediary preparation, design the wallet integration, and hold the build until the regulation is adopted — with a quarterly review as the legislative timetable moves.
Common mistakes
- Building a product on a retail CBDC timeline that has slipped repeatedly. - Reading a CBDC as a blockchain project; most retail designs are centralised ledgers with intermediaries. - Ignoring the intermediary role, which is where PSPs' opportunity lies. - Confusing wholesale CBDC (near-term, institutional) with retail (long-dated, political). - Treating a stablecoin and a CBDC as the same product; one is a private claim, the other a public one.