Boundary Cases: Problematic Inheritances and How to Solve Them — Practical Guide 2026

One of the most delicate situations in the succession field is discovering that the patrimony of the deceased conceals a liability exceeding the assets. According to article 659 of the Spanish Civil Code, the inheritance comprises all the goods, rights and obligations of the decedent that are not extinguished by their death, which expressly includes outstanding debts. This means that, when accepting an inheritance, you not only receive properties or money, but also the responsibility of addressing the economic charges that the deceased left without paying.

The Superior Court of Justice of Catalonia has established clear jurisprudence in this regard: in a recent ruling, it obliged a female heir to pay 67,064.34 euros to the Tax Agency for tax debts of the decedent that she accepted in a pure and simple manner. This case illustrates the greatest risk of inheritances with high liability: if the debts exceed the value of the goods, the heir who accepts in an ordinary manner must respond with their own personal patrimony, including their savings, properties and other assets.

When you accept an inheritance in a pure and simple manner, your personal patrimony merges with that of the deceased. This modality is only recommendable if you have absolute certainty that the assets exceed the liabilities. Imagine inheriting a property valued at 100,000 euros, but later discovering that the deceased left debts of 150,000 euros: accepting that inheritance without precautions would entail assuming 50,000 euros of net debt in a personal capacity, and creditors could seize your bank accounts or even your own property to collect.

Pure acceptance is irrevocable except in exceptional cases of defects in consent, so there is no going back once formalized. However, the Spanish Supreme Court, in a ruling of March 15, 2021, established that it is possible to annul the acceptance of an inheritance if hidden debts are discovered after its formalization, where that lack of knowledge amounts to an essential and excusable error in consent.

The most prudent alternative when there are doubts about hereditary liability is acceptance with benefit of inventory, regulated in articles 1010 to 1034 of the Civil Code. This modality limits your responsibility for the inherited debts to the value of the goods you inherit, protecting your personal patrimony from any claims exceeding the hereditary estate.

According to article 1023 of the Civil Code, the benefit of inventory produces three fundamental effects in favor of the heir:

1. The heir is not obliged to pay the debts and other charges of the inheritance except insofar as the goods of the same reach.
2. He preserves against the hereditary estate all the rights and actions that he had against the deceased.
3. His particular goods are not confused with those belonging to the inheritance.

If you have the inheritance or part of it in your possession, you have a period of 30 days from when you knew you were an heir to communicate before a notary the formation of inventory, citing creditors and legatees. If you do not have the inheritance in your possession, the 30-day period is counted from the day following that on which the term fixed by the notary for you to accept or repudiate the inheritance expires.

The inventory must be initiated within 30 days following the citation of creditors and legatees, and conclude in another 60 days. If the goods are at a long distance or are very numerous, the notary may extend this term up to a maximum of one year. During this process, you must prepare a faithful and exact inventory of all the goods, rights and obligations of the inheritance, including their economic valuation.

Once the inventory is completed, you will only pay creditors of the deceased with the inherited goods, never with your own goods. If after liquidating all the hereditary assets there are still outstanding debts, those creditors cannot claim them against you, assuming the loss themselves.

If after investigating the patrimony you determine that the debts are clearly superior to the goods, pure and simple renunciation can be your best strategy. Renunciation must be formalized before a notary and has an irrevocable character. This decision implies that you do not acquire any rights over the goods, but neither do you assume any responsibility for the debts.

It is important to emphasize that if you renounce purely and simply without counterpart, you do not have to pay the Inheritance Tax for something you are not going to inherit. If everyone called renounces, the inheritance passes to the next in the legal order and, if nobody accepts it, it may end up with the State or the corresponding Autonomous Community, which always takes it with benefit of inventory and pays creditors only up to the value of the assets.

When you accept an inheritance with debts, it is fundamental to know which liabilities are deductible from the taxable base of the Inheritance Tax. According to article 13 of Law 29/1987 on Inheritance and Donation Tax, the following are deductible:

• Debts of the decedent accredited in public document or in private document with certain date
• Mortgages pending on inherited properties
• Documented personal loans
• Outstanding fiscal obligations (Personal Income Tax, VAT, autonomous and local taxes)
• Debts with Social Security assumed by the heirs
• Expenses of last illness not covered by insurance
• Funeral expenses within reasonable limits

Debts owed to the heirs or to legatees of an aliquot share, or to their spouses, ascendants, descendants or siblings, are not deductible, even if they renounce the inheritance.

When one of the heirs is in unknown whereabouts, the succession process is usually blocked, because the partition requires the participation of all heirs. The Spanish Civil Code regulates this problem in articles 181 to 192, establishing a progressive system of protection of the missing person and of guarantee for those interested in the succession.

One absent from their domicile or last residence will be considered in a situation of legal absence when the following temporal requirements established in article 183 of the Civil Code are met:

1. After one year from the last news or, in the absence of these, from their disappearance, if they had not left a proxy with administration faculties of all their goods.
2. After three years, if they had left entrusted by proxy the administration of all their goods.

It is crucial to understand that the Civil Code does not require that there be a situation of danger to the life of the person, but simply that one cannot contact the absent party. What is really relevant is the impossibility of communication, not the circumstances that caused it.

Before absence is declared, a defender of the missing person may be appointed when these three circumstances concur:

1. Disappearance of a person from their domicile or habitual residence, without further news of them.
2. That the disappeared person lacks a legal or voluntary representative.
3. The existence of business that does not admit delay without grave harm.

According to article 182 of the Civil Code, those who are entitled to request the declaration of absence are:

• The spouse of the absent person, if not legally separated
• Blood relatives up to the fourth degree
• Persons who have rights over the goods of the disappeared
• The Public Prosecutor, ex officio or by reason of denunciation

The declaration of absence is processed before the Court of First Instance of the absent person’s last domicile. If none was appointed earlier, a defender will be designated to protect and represent the missing person. An official notice will be published in the Official State Gazette and on the notice board of the municipality where the disappeared person resided, allowing any interested party to file allegations within a determined period.

Once legal absence is declared, the representation of the absent person corresponds according to the following order of preference established in article 184 of the Civil Code:

1. The present spouse of legal age not legally or de facto separated
2. The adult son (if there are several, the one living with the absent person is preferred and the older to the younger)
3. The nearest ascendant
4. Adult siblings who have established cohabitation

If none of these persons exist or are available, the court clerk, after hearing the Public Prosecutor, will appoint a solvent person of good standing to administer the absent person’s assets.

If an heir is declared legally absent, their representative may act for them in the inheritance provided it is shown that the absent person was alive when the deceased died. If this cannot be proven, their share accrues to the co-heirs, who must make an inventory of those assets with the participation of the Public Prosecutor and keep them until death is declared.

Alternatively, if considerable time elapses without news of the absent person, a declaration of their death can be reached. In that case, depending on the date of death established, their descendants will take their place by right of representation, or their own heirs will inherit.

Minors of age and persons judicially incapacitated deserve special protection when they are called to an inheritance. The Spanish legal system establishes specific safeguards to prevent these vulnerable heirs from assuming patrimonial risks.

The law does not treat inheritances received by minors or persons with disabilities as automatically accepted with benefit of inventory, but it does provide safeguards to prevent them from taking on debts they cannot meet.

For minors, parents act on their behalf, but they need court authorisation, with the involvement of the Public Prosecutor, to reject the inheritance; if the judge refuses, it can only be accepted with benefit of inventory. A guardian needs court authorisation both to reject it and to accept it without benefit of inventory. Persons with disabilities accept for themselves, unless their support measures provide otherwise.

Pending inheritance refers to the period of time in which the goods and rights of the deceased do not have a defined owner, since the heirs have not yet accepted it. During this period, the hereditary patrimony maintains its autonomy and cohesion, but cannot be attributed to any individual in particular.

Although pending inheritance lacks legal personality and is not a subject of rights, article 6.1.4º of the Civil Procedure Law establishes that it has capacity to be party in civil proceedings. This procedural capacity is fundamental, since it allows the inheritance to sue and be sued while remaining unaccepted.

The Civil Code does not establish a specific term for the duration of pending inheritance. In general terms, it lasts as long as it takes the heirs to accept or reject the inheritance. However, jurisprudence has established a prescription period of 30 years from the date of death to claim the inheritance, applying by analogy article 1963 of the Civil Code on prescription of actions on real property.

In practice, there are shorter terms that can force the decision of the heirs. Article 1004 of the Civil Code establishes that no one can promote that another heir accept or repudiate the pending inheritance until nine days have passed since death. Once these nine days have elapsed, any interested party can request before a notary to set a term of 30 calendar days to the heir to accept or repudiate. If they do not manifest their will within that period, the inheritance will be understood as accepted outright.

During the state of pending status, the hereditary patrimony requires administration and custody to preserve its value. When the estate is placed under court intervention, the Civil Procedure Law gives preference as administrator to the surviving spouse and, failing that, to the heir or legatee of an aliquot share with the largest share of the inheritance.

The testator may have foreseen this administration by appointing an executor with faculties to administer or a specific administrator in charge of the hereditary patrimony until the inheritance is accepted. If there is no executor nor designated administrator, the heirs will be those who administer the pending inheritance or, as a last resort, the judge will determine who should do so.

The administrator of pending inheritance has the following fundamental obligations:

• Preserve the hereditary patrimony in its entirety
• Administer and guard the goods, rights and obligations
• Manage the tax obligations of the deceased (Personal Income Tax, Real Estate Tax, municipal capital gains tax, Inheritance Tax)
• Pay debts with the goods of the inheritance
• Carry out inventory of goods and debts
• Present periodic reports if so required by the court

Pending inheritance must comply with various tax obligations until it is formally accepted. According to article 35.4 of the General Tax Law, pending inheritances have the status of tax-obligated persons.

While the inheritance is pending, the deceased’s tax obligations, such as their last Personal Income Tax return, are fulfilled by its representative, who can pay them out of the estate. For real estate, Real Estate Tax and municipal capital gains tax must be paid. Furthermore, Inheritance and Donation Tax must be paid within six months from death, although it can be extended by prior request for another six months.

If the heir is resident in Spain, they must also present the Model 720 of informative declaration of goods and rights located abroad when applicable, including inherited goods outside Spain.

When the inheritance presents a liability superior to the assets and no one accepts it, creditors of the deceased can request the declaration of bankruptcy of pending inheritance before the Commercial Court. Article 567 of the Revised Text of the Bankruptcy Law establishes that bankruptcy of the inheritance may be declared as long as it has not been accepted in a pure and simple manner.

Those entitled to request the bankruptcy of pending inheritance are the administrator of the inheritance, the heirs and the creditors of the deceased. It will be voluntary bankruptcy if requested by the administrator or an heir, and necessary if requested by a creditor.

Once bankruptcy is declared, the bankruptcy administration assumes exclusively the management and disposition of the hereditary patrimony, preventing heirs from freely disposing of the goods until the conclusion of the procedure. This mechanism protects the rights of creditors and guarantees an orderly distribution of the patrimony according to the legal order of precedence.

Inheritances with international elements have become increasingly frequent due to the mobility of European citizens. Regulation (EU) nº 650/2012, applicable since August 2015, establishes the legal framework for cross-border successions within the European Union.

This regulation introduces the principle that the law applicable to an inheritance is that of the country where the deceased had their habitual residence at the moment of death. Nevertheless, the decedent can choose by will that the law of their nationality applies to govern the succession. This choice must be made in a disposition of property upon death, either expressly or clearly arising from its terms.

One of the most useful tools for managing international inheritances is the European Succession Certificate (ESC), regulated by Regulation 650/2012. This document allows heirs or executors to demonstrate their right to the inheritance in different EU countries without the need for additional recognition procedures in each Member State.

The ESC is issued in Spain by the notary who declares the succession or some of its elements (or by the competent court), and has automatic validity in all Member States of the European Union (except Denmark and Ireland, which do not apply the Regulation). Once issued, the certificate is recognised without the need for special procedures or an apostille.

Although the ESC is not mandatory, it greatly facilitates the process of acceptance and administration of inheritances with goods in several European countries. It eliminates the duplication of procedures and simplifies the acceptance of succession decisions between Member States.

When an heir resident in Spain receives an inheritance that includes goods located abroad, they must gather specific documentation to correctly process the succession:

• Certificate of death of the decedent, translated and apostilled according to the Hague Convention
• Certificate from the Register of Last Wills (if the deceased executed a will in Spain)
• Authorized copy of the will or declaration of heirs ab intestato
• Deeds of ownership of the goods located abroad
• Certificates of account ownership in foreign banks
• NIE of the heir (Foreigner Identification Number)
• Identification documents apostilled and translated by a sworn translator

If the heir does not reside in Spain, they can process the entire inheritance from abroad through a notarial power of attorney granted to a local representative. The document must be signed before a notary in the country of residence and bear the Hague Apostille to be valid in Spain.

The taxation of inheritances with international elements presents special complexity. As a general rule, if the heir is resident in Spain, they must declare the inheritance by the Inheritance Tax in Spanish territory, regardless of where the goods are located. If the heir does not reside in Spain but inherits goods located in Spanish territory, they will also be obliged to pay tax here for those specific goods.

To avoid double taxation, Spain has signed Double Taxation Agreements (DTA) with several countries. For example, the DTA between Spain and France establishes that real estate is taxed in the country where it is located. If there is no agreement, Spanish legislation allows those taxed under personal obligation to deduct taxes paid abroad.

Heirs resident in Spain whose assets abroad, including inherited ones, exceed 50,000 euros in any of the three asset blocks (accounts; securities, insurance and annuities; and real estate) must file the Model 720 of informative declaration of goods and rights located abroad before March 31 of the following year. This obligation also applies to pending inheritances during the administration period.

When the decedent dies without a will having left goods in different countries, the process becomes considerably complicated. It will be necessary to make a declaration of heirs ab intestato before a competent Spanish notary, which can be in the place of the last domicile of the decedent in Spain, where the bulk of their patrimony is located, or where they died.

The procedure requires the presentation of documents that accredit the death and the kinship relationship of the applicants, together with the declaration of at least two witnesses who confirm that the deceased did not leave a will and that the designated persons are their sole heirs. If the notary cannot identify or locate an interested party, a notice will be published in the Official State Gazette and on the relevant town hall notice boards, and any interested party may object or submit allegations within one month.

Many problematic inheritances result in family conflicts that end in costly and prolonged litigation. Hereditary mediation emerges as an effective tool to prevent disputes and facilitate fair agreements among heirs.

Mediation is a voluntary process in which an impartial mediator facilitates communication among heirs with the objective of reaching a fair agreement for all parties. Unlike judicial procedures, mediation promotes dialogue solutions and avoids legal confrontation, helping to maintain family ties.

The mediation process in inheritances follows these structured phases:

1. First informative session: the mediator meets with the parties to explain the process and define objectives
2. Identification of interests and concerns: the points of conflict and emotional aspects are identified
3. Generation of options: the mediator facilitates the exploration of solutions that satisfy all parties
4. Signing of the mediation agreement: binding document for all heirs

It is fundamental to understand that in mediation the specific partition and adjudication of goods does not occur. To distribute the inheritance, one must subsequently go to the notary, who will carry out the deed of partition and hereditary adjudication reflecting what was agreed during mediation.

The best way to avoid problematic inheritances is prevention through adequate succession planning. Making a will and leaving clear one’s wishes facilitates that the future distribution is accepted and does not generate conflicts. It is advisable to include in the will conditions that facilitate the use of peaceful forms such as mediation in case of disagreements.

Any foreigner who owns goods in Spain can execute a Spanish will to facilitate the procedures for their heirs. This document can be limited to the goods located in Spanish territory and coexist with another will in the country of origin, granting greater legal security and significantly accelerating the succession process.

Problematic inheritances require deep knowledge of Spanish succession law and a personalized legal strategy. From acceptance with benefit of inventory to protect your patrimony against hidden debts, passing through the declaration of absence to unblock inheritances with missing heirs, to the management of international goods through the European Succession Certificate, each boundary case has specific legal solutions that can spare you serious economic harm and lasting family conflicts.

Do not face a complex inheritance alone. The specialized professional counsel will allow you to make informed decisions, comply with all legal and tax obligations, and protect your rights and patrimonial interests.

Yes, according to jurisprudence of the Supreme Court of March 15, 2021, it is possible to annul the acceptance of an inheritance if debts of the deceased are discovered after its acceptance, provided you show that this lack of knowledge is an essential and excusable error, meaning you could not have detected the debts with ordinary diligence. You must file a judicial claim providing evidence that you were unaware of those debts when accepting and that their existence substantially modifies the net value of the inheritance.

There is no mandatory legal time period to decide, but the action to claim the inheritance prescribes at 30 years from death. However, any interested party may require you through a notary to accept or repudiate within 30 days; if you do not respond, it will be understood as accepted outright. Furthermore, the Inheritance Tax must be paid within 6 months from death (extendable for another 6 months), so it is advisable to decide beforehand to avoid tax surcharges.

You should request bank certificates from the financial entities where the deceased might have accounts, review their personal documentation (bank statements, deeds, correspondence), and contact the tax authorities of the corresponding country. If the inheritance includes goods in EU countries, you can request the European Succession Certificate, which facilitates the identification and access to cross-border assets. For goods outside the EU, you will need specialized legal counsel in international successions.

If everyone called rejects the inheritance, it passes to the next in the legal order and, if nobody accepts it, it may end up with the State or the corresponding Autonomous Community, which takes it with benefit of inventory. The State will take possession of the goods as established in article 956 of the Civil Code. The creditors of the deceased may request the bankruptcy of creditors of the pending inheritance to attempt to collect their credits with the hereditary patrimony.

Yes. Minors inherit through their parents or guardians, who need court authorisation to reject the inheritance; a guardian also needs it to accept without benefit of inventory, and if the judge refuses the rejection, the inheritance can only be accepted with benefit of inventory. Persons with disabilities accept for themselves, unless their support measures provide otherwise.

Article written by Mario Martínez-Cardós Bada, Spanish lawyer specializing in tax and inheritance law.

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