Spanish law allows a minor to be the named holder of a bank account, but never alone: legal representatives, usually the parents, must be present at opening. From that starting point, each bank decides what the teenager can actually do — debit or prepaid card, spending caps, and Bizum transfers between the ages of 12 and 17 at institutions that support it, always under supervision. The framework is clear enough; what varies wildly is how much visibility and control the product genuinely hands to parents.
- Legal basis: The Civil Code gives parents legal representation of unemancipated minors (Article 162) and administration of their assets (Article 164), while Article 1263 lets minors enter contracts for everyday goods and services appropriate to their age.
- Card choice matters: A debit card draws on the account balance; a prepaid card can only spend what has been loaded onto it, which limits the damage from a mistake or a theft.
- Bizum from 12: The official Bizum site states that users aged 12 to 17 can send and receive money and pay online, with the tutor’s control and supervision, provided the bank offers it.
- Complaints go through parents: Because representatives act for the minor, claims over unrecognised charges are normally filed by the parents, first with the bank and then with the Bank of Spain’s complaints service.
What the law says about a minor’s account
According to the Bank of Spain’s Banking Customer Portal, a minor lacks the legal capacity to sign unless they are over 16 and emancipated, so representatives must be present when the account is opened. If the representative is not one of the parents, that capacity must be accredited, for example with a court ruling. The money belongs to the minor, even though representatives can make deposits, withdrawals and other operations. At 18, the holder operates the account normally.
The Bank of Spain also flags an alternative with consequences: a parent can appear as a co-holder, but then becomes a co-owner of the funds, with the legal and tax implications that entails. On documentation, CaixaBank notes on its website that a minor under 14 without a national ID card can obtain a provisional tax number from the Spanish tax agency using form 030.
Article 164 includes an exception relevant to working teenagers: earnings from work by a minor over 16 are administered by the minor for ordinary purposes, and parental consent is needed for anything beyond that.
Debit versus prepaid: where the money comes from
The core difference is the source of funds. A debit card spends against the account balance; a prepaid card only spends what has been loaded. For a first experience with digital money, prepaid narrows the blast radius of an error or a stolen card.
Two examples as described by the banks themselves in November 2026, and not recommendations: CaixaBank explains that while the holder is a minor, deposits are allowed but withdrawals must be ordered by parents or tutors, and from age 14 some accounts permit a debit card whose withdrawal and payment limits parents can control. Banco Santander offers a prepaid card for minors linked to its youth account: the legal representative contracts it on the minor’s behalf, it is topped up from the app, online banking or a branch with a maximum of 900 euros and no minimum load, and the bank says minors can now top it up themselves from the app.
Before signing with any bank, these are the questions worth asking: who can withdraw money and who can change the limits; whether parents see transactions in their own app in real time; whether the card can be blocked instantly from a parent’s phone; whether online and foreign purchases are allowed and at what fees; and what happens to the account and its fees when the minor turns 18.
Bizum for teenagers: available, but not automatic
Bizum’s official site states that users between 12 and 17 can already receive and send money and shop online, and directs families to ask their bank together with the tutor, framing it as operating under the tutor’s control and supervision. The Bank of Spain covered the change in a November 4, 2025 entry: as a general rule Bizum targets over-18s, but minors can use it with tutor supervision. The requirements are an institution that offers it, an account in the minor’s name and access to the bank’s app. According to the supervisor, parents generally activate Bizum and set usage limits and the maximum per transaction, although the institution may also set them.
This is where caution matters most. Bizum is instant, and one of the most repeated traps is the money request that a user accepts believing they will be paid. Before activating it, sit down with the teenager and go over why accepting a Bizum request means paying. Ten minutes of conversation are worth more than any configured limit.
Unrecognised charges and the complaints route
The account holder is the minor, but the people acting on their behalf are the representatives. Any claim to the bank is therefore normally handled by the parents, exactly as they would handle their own: first with the institution’s customer service and, if there is no response or the answer is unsatisfactory, with the Bank of Spain’s complaints service. Law 10/2025 keeps that channel open for users of financial services until the planned new authority is created. To use it, claimants must show they complained in writing to the institution beforehand and that a month has passed without resolution, or that the claim was rejected.
The legal framework is clear and reasonable: the minor owns the money, parents administer it and the bank supplies the tools. What is far less clear is whether banks compete on what actually matters. Their websites sell “no fees” and eye-catching designs; few explain with equal clarity who can change the limits or how to block a card within a minute. Those are the first two questions worth asking, and the answers say a lot about whether a product is designed to educate a young customer or simply to capture the client of ten years from now.