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Digital cash does not automatically mean anonymous payments. Privacy is a design choice determined by who operates the system, whether access is account-based or token-based, what records are retained, and which parties can connect a transaction to a person. Existing bank balances are already digital but remain liabilities of commercial banks. A retail central bank digital currency (CBDC) would be a direct digital liability of a central bank. In either model, an intermediary may still identify customers, process payment information, monitor activity and disclose records when financial-crime or other laws require it.
Start with the two kinds of “digital cash”
Money in an ordinary bank account
Most electronic money people use today is a balance at a commercial bank. The bank owes that money to the customer, so the balance is a commercial-bank liability. A banking app is simply an interface to that account; it is not a central-bank currency.
Opening and servicing such an account normally requires the provider to identify the customer and maintain account information. To execute a payment, the bank or payment service also needs transaction data such as the parties, amount and timing. The exact fields, retention periods and sharing rules depend on the country, product, risk assessment and applicable law.
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A retail CBDC would be a digital liability of a central bank made available to the public. It could use a two-tier or intermediated model in which private institutions provide wallets, customer support and compliance services while the central bank operates or settles the core ledger.
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That distinction changes the data flow. A central bank might process settlement records without holding a directly identifying customer profile, while an intermediary keeps the identity mapping. It does not, by itself, guarantee privacy: the technical architecture, contracts, legislation and access controls determine what each participant can learn.
Privacy is an architecture decision
Ask which party can see which fact
“Is it anonymous?” is too imprecise to answer usefully. For any payment system, ask separately whether the merchant, wallet provider, commercial bank, central bank or another operator can see:
- the payer’s legal identity;
- the recipient’s identity;
- the amount and time;
- the counterparties and payment history; and
- the records that can be retained, searched or shared later.
A system can hide a customer’s name from a merchant while the onboarding provider knows it. It can give the central bank pseudonymised records while an intermediary holds the key that links those records to the account holder. Those are different privacy outcomes, not contradictions.
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Account-based and token-based access
In an account-based design, access is tied to an identity system: the provider verifies who you are and associates the balance with your account. A token-based design relies on cryptographic tokens that do not themselves have to contain a person’s identity. The labels do not settle the privacy question. A token system can still involve identity checks at entry and exit, and an account system can limit the central operator’s view through separation of duties, pseudonymisation and strict access rules.
Pseudonymised is not necessarily anonymous
Pseudonymisation replaces direct identity fields with identifiers that do not directly name a person in a particular dataset. Another organisation may still possess the mapping or combine the records with other information. Treat “the operator cannot directly link this dataset to you” as a narrower claim than “nobody can identify you.”
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What a bank or payment provider may still collect
Information needed to provide the account
An ordinary bank or payment provider may collect identity and account details to open and service an account, plus the payment information needed to execute transfers or purchases. Providers can also keep records required by financial-crime, tax, consumer-protection or operational rules. There is no universal list that applies to every bank or country; collection is shaped by the service, jurisdiction, customer risk and transaction pattern.
United States customer-due-diligence duties
For covered US institutions, FinCEN’s customer-due-diligence guidance describes four broad responsibilities: procedures to identify and verify customers; understanding the nature and purpose of a customer relationship to develop a risk profile; ongoing monitoring to identify and report suspicious transactions; and maintaining or updating customer information on a risk basis.
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Why compliance and privacy can coexist
Anti-money-laundering and counter-terrorist-financing rules may require personal data to be accessed or shared with specified parties. Privacy protection therefore usually means limiting access by purpose, role and legal authority, rather than forbidding all collection. Data minimisation—collecting less, retaining it for a defined period and deleting old transaction data—reduces the harm if records are breached or misused. The Bank for International Settlements has warned that these protections require legal limits on payment-app data practices as well as cryptographic safeguards.
How the proposed digital euro describes privacy
The digital euro is a project, not an already issued currency. The European Central Bank’s published design statements distinguish online and offline payments and assign different responsibilities to intermediaries and the Eurosystem.
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Online payments
The ECB says users would be onboarded by an intermediary, such as a supervised payment provider. That intermediary would have access to the personal data needed to comply with European Union law, including anti-money-laundering and counter-terrorist-financing obligations.
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For online settlement, the ECB says data received by the Eurosystem would be pseudonymised and that the Eurosystem would not be able to directly link payment data to a person. This is a statement about the proposed architecture: the intermediary can still know the customer and may be able to connect the customer to a payment under its lawful responsibilities.
Offline payments
The ECB’s stated offline design aims for payment details to be known only to the payer and recipient. A device or card would support a local transaction without an immediate network connection, with the design defining how value limits, security controls and later reconciliation work. “Known only” is the ECB’s privacy intention for the proposed feature, not a universal property of all offline payment technologies.
What remains unsettled
Privacy promises for a proposal are not the same as enforceable results in a live system. Final legislation, technical implementation, intermediary contracts, security controls, retention rules and supervisory practice will determine how the design works in operation. The ECB’s statements should therefore be read as project specifications and policy intentions, not as proof that every future payment will be untraceable.
Compare the two models by data flow
| System | Who owes the money | Identity and transaction visibility | Compliance role |
|---|---|---|---|
| Commercial-bank deposit | A commercial bank | The bank or payment provider identifies the account holder and receives information necessary to execute payments. A central bank is not automatically the operator of the customer’s account. | Covered institutions may perform customer due diligence, maintain records, monitor activity and report suspicious transactions under applicable law. |
| Proposed digital euro, online | The central bank, with customer-facing services supplied by intermediaries | The ECB says the intermediary can identify and serve the customer, while Eurosystem data would be pseudonymised so it could not directly link online payments to a person. | Intermediaries would access personal data needed for EU-law obligations, including anti-money-laundering and counter-terrorist-financing rules. |
| Proposed digital euro, offline | The central bank, with an offline instrument supplied through the system | The ECB says payment details would be known only to the payer and recipient in its proposed offline design. | The final legal and technical controls, including limits and later reconciliation, depend on legislation and implementation. |
Six questions to use when evaluating any digital payment
- Who checks identity at onboarding? Find out which organisation collects your name, identity document, address or business information and how long it keeps the record.
- Who sees the transaction? Separate the merchant’s view from the wallet provider’s, bank’s and central operator’s views. A payment can be private from one participant and visible to another.
- Can records be linked back to you? Determine whether the operator has a direct identity field, a pseudonymous identifier or access to a separate mapping held by an intermediary.
- What happens without a network connection? Check whether offline payments are supported, where temporary records reside, what value or frequency limits apply and how reconciliation occurs later.
- Who may access or share data for compliance? Read the applicable anti-money-laundering, counter-terrorist-financing, court-order and reporting rules rather than assuming that “private” means exempt.
- What governance and remedies exist? Look for retention limits, role-based access, audits, breach notification, dispute procedures and an independent supervisor.
What privacy looks like in common situations
Buying from a merchant
A merchant may need only confirmation that a payment succeeded, while the payment provider handles identity and risk checks. Whether the merchant receives a name, account number or a reusable transaction identifier is a product and design choice. Do not infer the provider’s visibility from the merchant’s receipt.
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Using a regulated wallet
A wallet provider may know who you are because it performs onboarding and compliance checks. The central settlement operator may receive a pseudonymised record instead of your name. The two parties can therefore have different, complementary views of the same transaction.
Making a payment offline
Offline privacy depends on the device or instrument, not merely on the word “digital.” Local records, tamper controls, spending limits and the later connection to the network determine what can be learned and when. The proposed digital euro’s offline claim is specifically that the payer and recipient would know the payment details; it does not establish how every offline system works.
What evidence says about people’s privacy preferences
A 2023 Bank for International Settlements working paper reported a randomized online survey experiment using a nationally representative South Korean sample of more than 3,500 participants. In the paper’s scenarios, privacy-protective CBDC design variations and information about privacy benefits increased willingness to use a CBDC by up to 60% when participants considered purchasing privacy-sensitive products.
That figure is an experimental result for that sample and scenario. It is not a forecast that adoption of a live currency would rise by 60%, nor does it establish which design every country should choose. It does show why privacy settings can affect demand rather than serving only as a technical detail.
Where projects stand as of October 2026
Euro area
An ECB project page accessed on 13 October 2026 said possible first issuance of a digital euro was aimed for 2029 if the necessary European Union legislation were adopted in 2026. An ECB pilot FAQ described an operational pilot planned for the second half of 2027. Both dates are contingent plans and can change with legislation, procurement and testing. A pilot would not by itself mean that the public currency had been issued.
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United States
The Federal Reserve’s January 2022 paper explored CBDC options and said the Federal Reserve would not proceed without clear support from the executive branch and Congress, preferably through specific authorizing law. It is a discussion document, not evidence that the United States has issued or approved a retail CBDC.
Why rules cannot be transferred automatically
The BIS legal analysis notes that each jurisdiction may need its own legislative, regulatory and contractual framework for a retail CBDC. A US FinCEN obligation should not be presented as an automatic rule for the euro area, and a proposed European design should not be treated as a global standard.
Two official principles worth remembering
The Federal Reserve wrote in Money and Payments: The U.S. Dollar in the Age of Digital Transformation (2022): “Any CBDC would need to strike an appropriate balance between safeguarding consumer privacy rights and affording the transparency necessary to deter criminal activity.” The same paper said: “A general-purpose CBDC would generate data about users’ financial transactions in the same ways that commercial bank and nonbank money generates such data today.” These are policy observations, not a US issuance decision.
The BIS expressed the architectural trade-off in The technology of retail central bank digital currency (2020): “The design of a retail CBDC needs to balance the credibility of direct claims on the central bank with the benefits of using payment intermediaries.” That balance explains why a central-bank liability can still involve private institutions that know customers and perform compliance work.
Common mistakes when reading privacy claims
- Calling every digital balance a CBDC: a commercial-bank deposit and a central-bank liability have different operators and legal relationships.
- Equating pseudonymisation with anonymity: a separate identity mapping or additional information may still permit linkage.
- Assuming privacy removes compliance: lawful customer identification, monitoring and reporting can continue with restricted access.
- Assuming the central bank sees every named payment: some designs separate identity from settlement data; others may not.
- Assuming an intermediary sees nothing: a two-tier system commonly gives intermediaries the customer-facing and compliance responsibilities.
- Treating a project timeline as a launch date: legislation, pilots and technical plans are conditional until the system is legally issued.
The practical answer
Digital cash protects privacy only to the extent that its architecture and law limit collection, linkability, access and retention. Existing bank money generally leaves identity and necessary payment information with the commercial provider, which may also have due-diligence and monitoring duties. A proposed CBDC can reduce the central operator’s direct access through intermediaries, pseudonymisation or offline design, but those features do not erase the intermediary’s lawful responsibilities. To judge any system, identify each actor, map the data each one receives, and check the rules governing access, sharing and deletion.
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