Banking Law and Guardianship Funds Management in Spain

1. Introduction

“Guardianship funds management” in Spain concerns the legal administration, custody, investment, withdrawal, transfer and protection of money and financial assets belonging to a person whose assets are administered or supported by another person under law.

A major reform must be understood from the outset. Law 8/2021 of 2 June fundamentally changed Spain's system for adults with disabilities. Adult guardianship based on substitution was largely replaced by a system of support measures, especially curatela (curatorship), designed to respect the person's will, wishes and preferences. Traditional tutela now principally concerns minors who are not under parental authority.

Consequently, modern Spanish law generally distinguishes between:

• Tutela: principally guardianship of qualifying minors.
• Curatela: judicial support for adults with disabilities when other support is insufficient.
• Guarda de hecho: informal or de facto support.
• Defensor judicial: judicially appointed representative/support person for particular conflicts or situations.
• Parental administration: parents' management of property belonging to minor children.
• Protected patrimony (patrimonio protegido): a separate statutory mechanism for qualifying persons with disabilities.

Banks holding or investing these funds must therefore determine who owns the money, who is legally authorized to operate the account, what the judicial support order permits, and whether a proposed transaction requires judicial authorization.

2. Principal Legal Framework

The principal rules arise from:

1. Spanish Civil Code (Código Civil)

This regulates parental authority, guardianship, curatorship, de facto guardianship, judicial defenders, inventories, accounts, authorization for important transactions and liability.

2. Law 8/2021 of 2 June

This legislation substantially reformed civil and procedural law concerning persons with disabilities. Its central objective was to replace broad substitution in decision-making with individualized support respecting the person's autonomy.

3. Law 15/2015 on Voluntary Jurisdiction

Judicial authorization for transactions involving protected assets is generally processed through voluntary-jurisdiction proceedings.

4. Law 41/2003

This establishes the patrimonio protegido regime for qualifying persons with disabilities.

5. Banking and investment regulation

Where guardianship/support funds are deposited or invested through banks and investment firms, ordinary financial regulation—including customer identification, investment-services rules, contractual requirements and safeguarding obligations—operates alongside the Civil Code.

3. Guardianship of Minors

Under Article 199 of the Civil Code, tutela applies principally to:

1. unemancipated minors in situations of abandonment or public protection; and
2. unemancipated minors who are not subject to parental authority.

Guardianship functions must be exercised for the benefit of the minor and remain subject to judicial safeguards.

Therefore, a tutor does not become owner of the child's bank account or investments.

The minor remains the beneficial owner.

The tutor merely administers the assets under a fiduciary-like statutory duty.

4. Duty to Administer Funds Carefully

Article 228 of the Civil Code imposes an express obligation upon the tutor to:

administer the minor's property with due diligence.

The tutor must also provide annual information to the judicial authority concerning the minor and submit annual accounts concerning the administration.

This creates several practical obligations.

A tutor should:

• preserve the minor's capital;
• keep adequate financial records;
• distinguish the minor's money from personal funds;
• avoid unauthorized transactions;
• properly document expenditures;
• manage investments prudently; and
• use the property for the minor's legitimate interests.

The tutor cannot treat guardianship money as personal money.

5. Bank Accounts

A guardianship bank account presents two legally separate questions:

Ownership: Who owns the money?

Operating authority: Who is legally entitled to instruct the bank?

For example, assume a 14-year-old child inherits €150,000.

The money remains the child's property.

If a tutor is appointed, the tutor may administer it only within the powers granted by law and the relevant judicial decisions.

A bank should therefore distinguish between:

Account holder/beneficial owner → Minor

and

Authorized legal representative → Tutor

The representative's access to the account does not transfer beneficial ownership.

6. Inventory of Assets

Asset identification is one of the fundamental safeguards of guardianship and curatorship.

For a representative curatorship, Article 285 requires the curador with representative powers to prepare an inventory of the supported person's assets within 60 days after taking possession of the office.

Significantly for banking law, money, jewellery, valuable objects, securities and documents that should not remain with the curador may be deposited in an establishment designated for that purpose.

This mechanism helps prevent:

• disappearance of funds;
• unauthorized withdrawals;
• undisclosed investments;
• mixing of assets; and
• misuse by the representative.

7. Curatorship and Adult Funds after Law 8/2021

This is where older descriptions of Spanish “adult guardianship” can become inaccurate.

Article 269 provides that a court establishes curatela when another support measure is insufficient.

The court must identify precisely the acts for which assistance is required.

Only exceptionally, when necessary in light of the person's circumstances, may the court give the curador representative powers for specified acts.

Therefore, a bank cannot simply assume:

“The customer has a disability, so the curador controls the customer's bank account.”

That would misunderstand the post-2021 model.

Instead, the legal question is:

What does the particular support measure or judicial decision authorize?

8. Respect for Will, Wishes and Preferences

The modern regime places substantial emphasis upon the autonomy of the person receiving support.

The purpose of curatorship is not simply to allow someone else to make whatever financial decisions appear objectively preferable.

Article 270 allows courts to establish controls to protect the person's rights, will and preferences and prevent:

• abuse;
• conflicts of interest; and
• undue influence.

The court may also require the curador to provide information concerning the person's financial circumstances.

This principle is especially important for:

• bank withdrawals;
• investment portfolios;
• property sales;
• loans;
• guarantees;
• insurance investments; and
• long-term financial planning.

9. Judicial Authorization for Important Financial Transactions

Article 287 of the Civil Code is central to guardianship-funds management.

A curador exercising representative functions needs judicial authorization for specified important transactions. These include, among others:

• disposing of or encumbering important property;
• disposing of certain unlisted securities;
• gratuitous dispositions beyond limited circumstances;
• renouncing rights;
• certain settlements;
• accepting certain inheritances without benefit of inventory or rejecting inheritances;
• extraordinary expenditures;
• lending or borrowing money;
• providing guarantees; and
• entering specified life-insurance or annuity arrangements involving extraordinary investments or contributions. 

This prevents a representative from unilaterally taking major financial risks with protected assets.

10. Multiple Investment Transactions

Spanish law nevertheless recognizes that requiring a separate court application for every repetitive transaction can make financial management impractical.

Article 288 therefore permits a court, when appropriate, to authorize multiple transactions of the same nature or connected with the same economic activity, provided the fundamental characteristics and circumstances are specified.

For example, this can become relevant where an investment portfolio requires recurring transactions.

It creates a balance between:

Effective financial administration

and

Judicial protection against misuse.

11. Role of the Bank

Banks are not themselves normally the guardian or curador merely because they hold the protected funds.

Their role is generally custodial and contractual.

However, when receiving instructions from a representative, a financial institution may need to establish:

• identity of the account owner;
• identity of the representative;
• existence and scope of representation;
• contents of the relevant judicial decision;
• whether representation remains effective;
• whether a particular transaction exceeds the representative's powers; and
• whether judicial authorization is legally necessary.

A transaction worth €100 and a transaction involving disposal of a €500,000 investment portfolio plainly do not necessarily present identical representation issues.

12. Investment Management

Guardianship money does not necessarily have to remain permanently in cash.

Depending upon the circumstances and legal authority, assets can require appropriate financial administration.

But investment decisions must comply with the representative's duties and applicable judicial controls.

Consider a tutor administering:

€300,000 cash + €200,000 securities.

The tutor should not approach this portfolio as if managing personal speculative capital.

Relevant considerations include:

• preservation of property;
• liquidity required for the beneficiary;
• expected expenditure;
• investment risk;
• diversification;
• transaction costs;
• duration;
• income requirements; and
• applicable judicial restrictions.

For adults under support measures, their will, wishes and preferences are also central to the analysis.

13. Conflict of Interest

A representative must not exploit protected funds for personal benefit.

For tutors, Article 226 prohibits representation where the tutor is acting personally or for a third person and a conflict of interest exists. It also restricts transactions in which the tutor acquires property from the tutored minor or transfers property to the minor for consideration.

Suppose a guardian manages €200,000 belonging to a child.

The guardian cannot simply use €100,000 to finance their own business.

That raises obvious issues concerning:

• conflict of interest;
• unauthorized use of assets;
• breach of statutory duties;
• restitution; and
• potential personal liability.

14. Annual Accounting

Financial accountability is fundamental.

Article 228 requires tutors to provide annual accounts of their administration.

Furthermore, Article 232 requires a tutor, upon termination of the office, to submit a general justified final account, generally within three months, subject to extension for good cause.

Records should therefore make it possible to explain matters such as:

Opening assets

• income
• investment returns

− legitimate expenses

− authorized distributions

= closing assets.

Good banking records are therefore extremely important.

15. Liability for Mismanagement

Article 234 provides that a tutor is liable for damage caused to the minor through fault or negligence. The provision also establishes a limitation period linked to the final accounting.

Consider:

Opening assets: €400,000

Unauthorized personal withdrawal: €60,000

Unexplained transfers: €20,000

Remaining portfolio: €320,000

If the transactions constitute wrongful administration, the approval process for accounts does not simply transform misuse into legitimate expenditure.

The representative can potentially face liability according to the applicable legal rules.

16. Protected Patrimony

Spain also recognizes the patrimonio protegido de las personas con discapacidad under Law 41/2003.

This mechanism allows designated property and rights to be organized for the benefit of a qualifying person with disabilities.

The constituting document or judicial resolution must establish matters including:

• an inventory;
• administration rules;
• possible supervisory mechanisms; and
• procedures governing administrators.

The statutory regime requires assets, income and products of the protected patrimony to be directed toward the beneficiary's vital needs or preservation of the productivity of the protected patrimony.

This is different from an ordinary personal bank account and should not automatically be confused with curatorship.

17. Judicial Control

Spanish courts provide a significant layer of protection.

The voluntary-jurisdiction framework applies where a legal representative, support person or administrator of protected patrimony needs judicial authorization or approval for acts concerning property and rights.

The competent court is generally the Juzgado de Primera Instancia connected with the residence of the minor or person concerned under the applicable statutory provisions.

The judicial authority can therefore act as a safeguard against major unauthorized dissipation of protected funds.

18. Case Law

A qualification is important: not all significant Spanish guardianship decisions concern banks specifically. The strongest jurisprudence often concerns legal capacity/support, representation and unauthorized disposal of protected assets. Those principles nevertheless directly affect how banks should deal with guardianship or support funds.

Case 1 — Spanish Supreme Court, 22 April 2010 (RC 483/2006)

This Full Chamber decision concerned a father who sold property belonging partly to his minor children without obtaining the judicial authorization required for disposition of minors' property.

The Supreme Court addressed the legal effect of disposing of protected property without the necessary authorization.

Banking significance

The case demonstrates why a financial institution should not treat the representative's signature alone as sufficient whenever legislation requires judicial authorization.

The representative's ordinary authority has statutory boundaries.

19. Case 2 — Spanish Supreme Court, 5 September 2011 (RC 1755/2008)

This important Full Chamber judgment again concerned disposition by a parent of property belonging to minor children.

The Supreme Court emphasized that the judicial authorization required by Article 166 of the Civil Code is imperative and exists to protect the minor.

The Court explained that the parent's representation does not extend automatically to the protected dispositive transactions listed by law.

Banking significance

This principle can matter where a bank participates in a transaction involving:

• mortgaging protected property;
• realizing significant assets;
• investment disposals; or
• financing secured against a minor's assets.

A representative cannot obtain powers that the law reserves to judicial supervision merely because a bank contract has been signed.

20. Case 3 — Spanish Supreme Court, Judgment 282/2009, 29 April 2009

This important disability-law decision preceded Law 8/2021 but became influential in Spain's movement toward interpreting protective institutions consistently with the rights and individual circumstances of persons with disabilities.

Principle

Protective measures should not operate as an automatic, indiscriminate deprivation of personal autonomy.

Funds-management significance

Financial support should be tailored to the person's actual needs rather than automatically transferring complete economic control to another person.

This principle became considerably stronger under the post-2021 support model.

21. Case 4 — Spanish Supreme Court, Judgment 341/2014, 1 July 2014

The Supreme Court continued developing an individualized approach toward protective measures for persons with disabilities.

Principle

Support must be adapted to the person's particular situation rather than imposed through an unnecessarily broad standardized restriction.

Banking significance

A bank should look at the actual judicial order and scope of authority.

A curador authorized to assist with one class of transactions does not necessarily possess unrestricted authority over every account, investment or financial contract.

22. Case 5 — Spanish Supreme Court, Judgment 244/2015, 13 May 2015

This decision forms part of the Supreme Court's jurisprudence concerning proportionality and individualized support.

Principle

Judicial protective measures should correspond to the actual assistance required by the person.

Funds-management significance

The financial consequence is important:

support with finances ≠ automatic ownership or unrestricted control of finances.

A representative's authority must be legally established.

23. Case 6 — Spanish Supreme Court, Judgment 298/2017, 16 May 2017

This decision continued the evolution toward support tailored to the person's actual abilities and requirements.

Principle

Protective arrangements should preserve autonomy wherever possible rather than unnecessarily substituting another person's decision.

Banking significance

Financial institutions must avoid treating every support arrangement as equivalent to total financial incapacity.

Different judicial arrangements can produce different levels of authority.

24. Case 7 — Spanish Supreme Court, Judgment 589/2021, 8 September 2021

This judgment became particularly important because it was among the Supreme Court's early applications of the newly effective Law 8/2021.

The case concerned support measures under the new legal model.

The Supreme Court considered how support measures operate under legislation emphasizing the person's will, wishes and preferences.

Banking significance

It illustrates the major shift away from the old assumption that an adult requiring assistance should simply have financial decision-making transferred wholesale to a guardian.

After Law 8/2021, the starting question is what support the person requires and what powers have actually been established.

25. Case 8 — Spanish Supreme Court Post-2021 Support Jurisprudence

Subsequent Supreme Court jurisprudence has continued to apply Law 8/2021's individualized support model.

The practical principle is that courts must determine support by reference to the particular person's circumstances and cannot simply reproduce the former system of blanket incapacitation.

Banking significance

Banks handling accounts affected by support measures should therefore focus on documentary authority rather than relying on generic labels such as:

“disabled customer”

or

“guardian account.”

The legally relevant question is the precise scope of the support and representation arrangement.

26. Case-Law Principles Summarized

27. Example: Management of €500,000

Suppose a minor inherits:

• €250,000 cash;
• €150,000 investment securities; and
• €100,000 interest in real property.

A tutor is appointed.

The legal structure can be understood as:

Minor

↓ owns

€500,000 estate

↓ administered by

Tutor

↓ supervised where required by

Judicial authority

↓ assets held/serviced by

Bank / investment firm

The tutor does not become the owner of €500,000.

The tutor administers it under statutory obligations.

Routine legitimate expenditure may fall within ordinary administration, while important transactions can require judicial intervention depending upon the applicable provisions.

28. Example: Adult with a Curador

Now consider an adult with:

• €100,000 bank deposits;
• €250,000 securities; and
• an apartment worth €400,000.

A court determines that the person needs assistance with certain complex financial transactions and appoints a curador.

The bank should not automatically give the curador unrestricted control over the entire €750,000 estate.

Instead, it should examine the judicial arrangement.

For example:

Ordinary banking → person acts independently

Specified investments → curador assists

Specified representative transactions → curador represents where judicially established

Sale of protected major assets → judicial authorization where Article 287 applies

This is much closer to the philosophy of modern Spanish law.

29. Bank Compliance Risks

Banks dealing with guardianship or support funds face several important legal risks.

Authority risk: accepting instructions from someone without adequate representative authority.

Authorization risk: executing a major transaction when judicial approval was legally required.

Conflict-of-interest risk: facilitating a transfer primarily benefiting the representative.

Documentation risk: failing to maintain evidence of the representative's legal powers.

Investment-services risk: where investments are involved, ordinary investor-protection requirements may also apply.

Operational risk: failing to update the account after alteration or termination of a support measure.

Asset-protection risk: treating protected money as belonging to the representative rather than the beneficiary.

30. Practical Legal Principles

Spanish guardianship-funds management can therefore be summarized through eight principles:

1. The beneficiary remains the owner of the funds.
2. A tutor or curador is not automatically free to use those funds.
3. The representative's powers depend upon statute and, where applicable, the judicial decision.
4. Important transactions may require judicial authorization.
5. Tutors must administer minors' assets with due diligence and account for their management.
6. Conflicts of interest require special protection.
7. For adults with disabilities, autonomy and the person's will, wishes and preferences are central after Law 8/2021.
8. Banks should distinguish legal representation from beneficial ownership.

Conclusion

Banking law and guardianship funds management in Spain operates through a combination of civil guardianship/support law, judicial supervision and ordinary banking and investment regulation. The most important modern development is Law 8/2021, which transformed the adult-disability framework from broad substituted decision-making toward individualized support. Traditional tutela is now principally directed toward qualifying minors, while adults generally receive support through mechanisms such as curatela.

For minors, tutors must administer property diligently, report annually and provide final accounts. For representative curatorship, the Civil Code requires inventories and subjects important financial acts—including certain asset disposals, loans, guarantees and extraordinary investments—to judicial authorization. Articles 287–290 provide particularly important safeguards.

The case law reinforces two complementary principles. Decisions such as the Supreme Court judgments of 22 April 2010 and 5 September 2011 show that statutory judicial authorization for disposition of protected assets is a substantive safeguard, not an empty formality. Meanwhile, Spain's disability jurisprudence culminating in the post-2021 regime emphasizes individualized support, proportionality and preservation of autonomy.

Accordingly, the central banking-law principle is simple: guardianship or curatorship gives authority to protect and administer another person's property only to the extent permitted by law; it does not transfer ownership of that property to the guardian or curador.