What is child custody

Child custody is the right and responsibility of a parent to live with their minor children, attend to their daily needs, and look after their well-being on an ongoing basis. It is one of the central concepts in Spanish family law and becomes especially relevant when a couple separates or divorces, since it is necessary to determine with whom the children will live and how their day-to-day care will be organised.

Article 92 of the Civil Code (Código Civil) is the main reference at state level. This article establishes that a judge, when granting a separation or divorce, must take the necessary measures regarding the care and upbringing of the children, determining which parent is awarded custody or whether it will be shared by both. The court ruling or the agreement reached by the parents sets out who the children will live with, during which periods, and under what conditions.

In practice, child custody covers all tasks related to the children's daily life: meals, hygiene, school runs, homework supervision, routine medical care, management of extracurricular activities, and the physical presence required to ensure the children's safety and emotional stability. It is, in essence, the everyday exercise of parenting.

A fundamental point that frequently causes confusion is the difference between child custody and parental authority (patria potestad). Although the two concepts are related, they are legally distinct. Parental authority is the set of rights and duties that the law recognises for both parents over their non-emancipated minor children: legal representation, management of assets, and decisions on education, health, and religious upbringing. In the overwhelming majority of separations and divorces, parental authority remains shared by both parents, regardless of who has physical custody. Only in exceptional cases of serious failure to fulfil parental duties can a judge strip a parent of parental authority.

Child custody determines with whom the children live from day to day. Parental authority, by contrast, is retained by both parents and covers the major decisions affecting the children's lives: education, health, and legal representation.

Types of child custody in Spain

Spanish law recognises several types of child custody. The choice between them depends on the specific circumstances of each family, the age of the children, the parents' availability, and, above all, the best interests of the child.

Shared custody

Shared custody is the arrangement in which both parents divide the children's time between their two homes on an equitable basis. The children alternate residence according to a schedule agreed in advance or set by the judge. The most common schemes are alternating weeks, a 2-2-3 split, or the 3-4-4-3 model, although the split does not have to be exactly 50/50.

In recent years, shared custody has grown significantly in Spain. According to data from the Instituto Nacional de Estadística, in 2024 it was awarded in more than 43% of divorce rulings involving minor children, compared with barely 12% a decade earlier. Autonomous communities such as Aragón, Cataluña, Navarra, and the País Vasco have their own legislation establishing it as the preferred arrangement. Shared custody in Spain is, today, a firmly established trend in both legislation and case law.

This model has significant advantages: it ensures that children maintain a close bond with both parents, promotes shared parental responsibility, and reduces the risk of one parent being relegated to a secondary role. However, it requires a high level of coordination, geographic proximity between the two homes, and a reasonable capacity for communication between the parents.

Sole or single-parent custody

In sole custody, the children live primarily with one parent, known as the custodial parent. The non-custodial parent has a visitation schedule that typically includes alternating weekends and one or two weekday afternoons, as well as holiday periods.

Historically, sole custody was the predominant model in Spain and was, in most cases, awarded to the mother. Although its prevalence has declined as shared custody gains ground, it remains the arrangement applied when circumstances do not allow for an equitable division of time: excessive distance between the parents' homes, severe schedule incompatibility for one parent, or situations of serious conflict.

It is important to note that awarding sole custody to one parent does not extinguish the other's rights. The non-custodial parent retains full parental authority and participates in all relevant decisions affecting the children's lives. What they lose is only day-to-day cohabitation, not parental authority.

Split or distributive custody

Split custody is an exceptional arrangement applied when there are several children and it is decided that some will live with one parent and the others with the other. Courts grant it very rarely, as the case law of the Tribunal Supremo favours the principle of keeping siblings together, except where there are compelling reasons to justify a separation.

This arrangement may be considered when the children are very different in age and have different needs, when one of the minors expresses a clear and well-founded preference for living with a particular parent, or when special circumstances make it unviable for all the siblings to live in the same home. In any case, mechanisms are always established to ensure frequent contact between the siblings.

Distributed custody

Distributed custody is a less well-known variant that combines elements of the preceding models. Under this arrangement, the same child alternates living with each parent, but in unequal periods that are generally longer than those of standard shared custody. For example, the child may live with one parent during the school term and with the other during holiday periods.

This model is typically applied when the parents live in different cities or autonomous communities, making weekly alternation unviable, but where the aim is still to ensure that the child maintains a meaningful relationship with both parents. It is not a common arrangement, but courts can adopt it when the family circumstances warrant it.

Father and children spending time together as a family

How child custody is decided

Custody can be established by agreement between the parents or by a judicial decision. In both cases, the guiding principle is always the best interests of the child, enshrined in the Civil Code as well as in international legislation ratified by Spain.

Factors considered by the judge

When the parents cannot reach an agreement and it falls to the judge to determine the custody arrangement, established case law has consolidated a set of criteria that are assessed together:

Age of the children: Very young children may require greater stability in a single home, whereas older children tend to adapt more easily to alternating between two households.
Availability and working hours of each parent: The judge examines who has the greater capacity to attend to the children's daily needs. A parent who works reduced hours or from home may have an advantage over one with rotating shifts or frequent business travel.
The child's wishes: From the age of 12, children have the right to be heard in court proceedings. In practice, judges also take into account the preferences of younger children through the reports of the psychosocial team.
Sibling bond: Courts favour keeping siblings together unless there are compelling reasons to separate them.
Conditions of each home: The available space, habitability conditions, the existence of a bedroom for the children, and the suitability of the environment are all assessed.
Proximity to the child's school: Keeping the children at their current school is a relevant factor, as it ensures stability in their social and educational environment.
Prior involvement in child-rearing: The judge examines who has habitually been responsible for feeding, bathing, taking the children to school, helping with homework, and accompanying them to extracurricular activities.
Capacity for co-operation between the parents: The judge assesses whether the parents are able to communicate and make joint decisions without their conflict harming the children.

Role of the Ministerio Fiscal

The Ministerio Fiscal (public prosecutor's office) intervenes in all family proceedings involving minors. Its role is to safeguard the best interests of the child by issuing an opinion on the most appropriate custody arrangement. In cases where shared custody is sought by only one parent, the favourable report of the Ministerio Fiscal is a requirement set out in Article 92 of the Civil Code, although the Tribunal Supremo has clarified through its case law that an unfavourable report does not necessarily prevent a judge from granting shared custody if the judge considers it to be the best option for the children.

Psychosocial team report

In contested proceedings, the judge typically requests a report from the psychosocial team attached to the court, made up of psychologists and social workers who specialise in family matters. This team conducts individual interviews with each parent, observes parent-child interaction, assesses the conditions of each home, and issues a recommendation on the most beneficial custody arrangement.

The psychosocial report is not binding on the judge, but it carries considerable weight in the final decision. In practice, courts follow the recommendations of these professionals in the majority of cases, unless there are well-founded reasons to depart from them.

How to apply for child custody

By mutual agreement: the regulatory agreement

The fastest, most cost-effective, and least traumatic way to establish a custody arrangement is by mutual agreement. If both parents agree on the type of custody and all other related measures, the process is formalised through the divorce settlement agreement (in Spain, the *convenio regulador*), a document that sets out all the agreements relating to the separation or divorce.

The divorce settlement agreement must include, at a minimum:

The agreed custody arrangement and a detailed cohabitation schedule
Child maintenance payments, where applicable
Use of the family home
Division of ordinary and extraordinary expenses
The visitation and communication schedule for the non-custodial parent, in the case of sole custody

Both parents submit the joint divorce petition, accompanied by the divorce settlement agreement, to the Juzgado de Primera Instancia (first-instance court). They may be represented by a single shared lawyer and court representative. The judge summons the parties to ratify the agreement, verifies that it does not harm the children's interests, and, if everything is in order, issues a ruling approving the agreement. The average timeframe is one to three months.

According to data from the Consejo General del Poder Judicial, 77% of divorce petitions in Spain are processed through this route, which shows that most couples manage to reach an agreement without the need for a trial.

Contested proceedings: when no agreement is reached

When the parents cannot agree on a custody arrangement, either of them may ask the court to determine custody through contested proceedings. This route is longer, more costly, and more emotionally draining, but it is the alternative when negotiation breaks down.

Contested proceedings follow these stages:

Filing the claim: Each parent is represented by their own lawyer and court representative. The claim must set out why the requested custody arrangement is the best option for the children.
Response to the claim: The other parent has 20 working days to respond and, if they wish, to file a counterclaim requesting a different custody arrangement.
Evidence phase: Evidence proposed by both parties is examined: documents, witnesses, expert reports, and typically the report of the court's psychosocial team.
Oral hearing: The parties present their arguments before the judge and the evidence that requires direct examination is heard, including witness testimony.
Ruling: The judge issues a ruling establishing the custody arrangement, child maintenance, use of the family home, and all other measures. The average timeframe for contested proceedings is six months to one year, although this can vary considerably depending on the court's workload.

Required documentation

Regardless of the route chosen, it is advisable to prepare the following documentation:

Certificate of registered address (padrón) for both parents
Proof of income and employment status
Relevant school and medical reports for the children
A detailed parenting plan describing how the children's day-to-day life will be organised
Evidence of involvement in child-rearing: attendance at school meetings, accompanying children to activities, medical appointments

Difference between child custody and parental authority

Confusion between these two concepts is one of the most common in Spanish family law, both among separating parents and in the general public. Although they are related, child custody and parental authority (patria potestad) are distinct legal concepts that protect different aspects of the parent-child relationship.

Parental authority: legal authority over the children

Parental authority is the set of rights and obligations that the law confers on both parents with respect to their non-emancipated minor children. It includes:

Legal representation of the children
Management of their assets
Decisions on education (choice of school, religious upbringing)
Decisions on health (medical procedures, treatments)
The duty to care for them, provide for them, educate them, and ensure their comprehensive development

Following a separation or divorce, parental authority remains shared by both parents in the overwhelming majority of cases. This means that major decisions about the children's lives must be taken jointly, regardless of who has physical custody. Only in exceptional circumstances -- such as abandonment, abuse, or serious neglect -- can a judge strip a parent of parental authority.

Child custody: day-to-day care

Child custody, by contrast, refers to the day-to-day care of the children: who they live with, who takes them to school, who prepares their meals, who supervises their homework, and who is present in their daily life. It is, in essence, the practical and physical dimension of parenting.

Why the distinction matters

Understanding this difference is crucial because it has direct practical consequences. The parent who does not have physical custody retains parental authority and must therefore be consulted and informed about all relevant decisions: changing schools, non-urgent surgical procedures, travel abroad, and religious education. If the custodial parent makes unilateral decisions on these matters, they are violating the other parent's rights and may face legal consequences.

In practice, routine daily decisions that are not of fundamental significance are taken by whichever parent has the children at any given time: what they have for dinner, what time they go to bed, which friends they spend time with. But decisions of substance -- those that significantly affect the child's life -- require the consent of both parents.

Modifying a custody arrangement

A custody arrangement established in a court ruling or divorce settlement agreement is not permanent. Spanish law, specifically Article 775 of the Ley de Enjuiciamiento Civil, allows a modification to be requested when there has been a substantial change in the circumstances that were taken into account when the original measures were adopted.

When a modification can be requested

For a modification request to succeed, the change in circumstances must meet three criteria: it must be substantial (not a minor or incidental change), it must have arisen after the original ruling, and it must be permanent or lasting (not temporary). The most common situations that justify a modification include:

A change of address by one of the parents that affects the viability of the current arrangement
A significant change in the working hours or availability of one of the parents
The children's evolving needs as they grow older
Repeated non-compliance with the arrangement by one of the parents
A change in financial circumstances that makes it impossible to maintain the agreed conditions

From sole custody to shared custody

One of the most common changes sought in Spanish courts is a transition from sole custody to shared custody. Parents who did not initially obtain shared custody -- whether because they did not request it or because it was refused -- can apply for it subsequently if circumstances have changed: greater availability in terms of working hours, a home closer to the other parent's, greater involvement in child-rearing, or simply the children having reached an age at which alternating between two homes is more viable.

The Tribunal Supremo has repeatedly held that shared custody should not be regarded as exceptional, but rather as a normal and desirable arrangement when circumstances make it workable. This has made it easier for many parents who started with a sole-custody arrangement to obtain shared custody in a modification of measures proceeding.

Modification procedure

The modification can be processed by mutual agreement, if both parents are in favour of the change, or through contested proceedings, if only one of them requests it. By mutual agreement, it is sufficient to submit a new divorce settlement agreement with the agreed changes. Through contested proceedings, the process is similar to an ordinary family law proceeding, with a claim, a response, examination of evidence, and a ruling.

Frequently asked questions

Can a parent give up child custody?

A parent can request that custody be awarded to the other parent, but they cannot formally renounce parental authority or their parental obligations. The obligation to contribute to the children's maintenance through child support payments continues regardless of who holds custody. In any case, the final decision always rests with the judge, who will act in the best interests of the child.

From what age is the child's opinion taken into account?

Article 92 of the Civil Code establishes that children over the age of 12 must be heard in judicial proceedings before any measure affecting them is adopted. However, judges also take into account the views of children under 12 -- particularly through the reports of the psychosocial team -- when those children are mature enough to express a well-founded preference. The child's opinion is one of the factors the judge weighs, but it is not in itself decisive.

Does shared custody eliminate child support payments?

Not necessarily. Although it is common in shared custody arrangements where the parents have similar incomes for no formal child support payment to be set, when there is a significant difference between the parents' incomes the judge may establish a payment from the parent with the greater financial capacity. The aim is to ensure that the children enjoy a comparable standard of living in both homes.

How long does a custody process take?

Timeframes vary considerably depending on the route chosen and the court's workload. A mutual-agreement proceeding can be resolved in one to three months. A contested proceeding typically takes between six months and one year, although in courts with a heavy caseload it can take longer. Pre-trial family mediation can shorten timeframes and reduce the level of conflict.

Conclusion: managing custody arrangements with the right tools

Regardless of the custody arrangement established, the real challenge begins when it has to be put into practice in daily life. Coordinating schedules, dividing expenses, sharing information about the children's health and education, and making joint decisions requires a level of organisation that goes far beyond what a court ruling can resolve.

Niddo is the app designed to help separated parents manage their children's custody arrangements without friction: a shared real-time calendar, expense tracking with receipts, a structured communication space, and storage for important documents. By centralising all information in one place, both parents have full visibility and the margin for misunderstandings is reduced to a minimum.

If you are going through a separation or already have an established custody arrangement and want to manage it as smoothly as possible, download Niddo and simplify co-parenting from day one.

Child custody in Spain: types and how to apply