Joint Custody in Spain: Requirements and How It Is Decided

🇪🇸 Read the original in Spanish

The breakdown of a relationship is one of the most complex and painful moments a family can face, especially when there are minor children involved. In Spain today, joint custody has established itself as the preferred and healthiest arrangement to ensure that children maintain a balanced and daily bond with both parents. However, taking the step toward this model raises numerous legal, financial, and organizational questions that are best resolved with the law in hand. Below, we analyze in depth what requirements Spanish legislation demands, how this arrangement is processed, and what criteria the courts apply to grant it.

The Legal Framework of Joint Custody in Spain

To understand how joint custody is regulated in our country, it is essential to look at the Código Civil (Civil Code) and the case law of the Tribunal Supremo (Supreme Court), which has been the true engine of change in this matter over the last decade. The high court has reiterated that joint custody should not be considered an exceptional measure, but rather the general rule whenever possible and beneficial to the minor.

The Civil Code and the Best Interests of the Child

The key article regulating custody and guardianship at the state level is *Article 92 of the Código Civil***. This provision establishes the basis for adopting joint custody, which can be agreed upon in two ways:

1. At the request of both parents (or one with the consent of the other) in the proposed convenio regulador (regulatory agreement).
2. Exceptionally by the judge, at the request of one of the parties, when joint custody is the only way to adequately protect the best interests of the minor.

The indeterminate legal concept of the "best interests of the child" (also included in Ley Orgánica 1/1996 de Protección Jurídica del Menor [Organic Law 1/1996 on the Legal Protection of Minors]) is the guiding light for any judicial decision. This means that the judge does not look for the benefit or convenience of the parents, but rather the physical, emotional, and educational well-being of the children.

Law 15/2005 and the Evolution of Case Law

Ley 15/2005, de 8 de julio (Law 15/2005 of July 8) amended the Código Civil regarding separation and divorce, formally introducing the possibility of joint custody without the need to allege grounds for separation. However, in its original wording, the law required a favorable report from the Ministerio Fiscal (Public Prosecutor's Office) which limited its application. It was the Tribunal Supremo, in its landmark ruling of April 29, 2013, that declared this report was not binding and that joint custody should be the normal and desirable regime.

The Absolute Limit: Organic Law 1/2004 on Gender Violence

*Article 92.7 of the Código Civil** establishes a strict prohibition aligned with Ley Orgánica 1/2004, de 28 de diciembre, de Medidas de Protección Integral contra la Violencia de Género* (Organic Law 1/2004 of December 28 on Integrated Protection Measures against Gender Violence).

Joint custody will not be granted—and will be immediately suspended if already established—when either parent is involved in criminal proceedings initiated for attempting against the life, physical integrity, freedom, moral integrity, or sexual freedom and indemnity of the other spouse or of the children living with both. Nor will it be granted when the judge detects, from the allegations of the parties and the evidence presented, the existence of well-founded indications of domestic or gender violence.

Fundamental Requirements for Joint Custody to Be Granted

For a family court judge to issue a joint custody ruling, or for the Fiscalía (Prosecutor's Office) to approve a mutually agreed convenio regulador, a series of objective and subjective requirements must be met:

1. Aptitude and Affective Bonding

Both parents must demonstrate the capacity to care for the minors. The previous involvement in the daily care of the minor (taking them to school, medical visits, bath and dinner routines) is valued. It is not about who has been the "financial provider," but who has exercised affective co-parenting.

2. Relationship and Mutual Respect Between the Parents

Although parents are not required to have an excellent relationship (which is rare after a divorce), a minimum level of communication and respect is required to coordinate the daily decisions of the minor (doctors, extracurricular activities, education). Extreme hostility or the instrumentalization of the children are grounds for denial.

3. Proximity of Homes

This is a crucial logistical factor. The homes of both parents must be within a reasonable distance that does not disrupt the minor's schooling. If one parent lives in Madrid and the other in Toledo, weekly joint custody is unfeasible because it would subject the child to exhausting daily journeys of more than 45 minutes or 1 hour of travel to get to school.

4. Opinion of the Children (Exploration of the Minor)

According to Spanish legislation, minors under 12 years of age have the right to be heard in the judicial process if they have sufficient maturity. From the age of 12, their appearance before the judge and the Ministerio Fiscal (a procedure known as exploración del menor [exploration of the minor]) is mandatory. Their opinion is not binding on the judge, but it carries very significant weight.

5. Work-Life Balance

Parents must prove that their work schedules are compatible with caring for the children, or that they have a stable family support network (grandparents, hired caregivers) to cover the hours they are working.

Step-by-Step Practical Procedures to Request Joint Custody

The process for obtaining joint custody varies substantially depending on whether there is an agreement between the parties or if they must go through contentious proceedings. Here we detail the steps to follow in both scenarios:

Route 1: By Mutual Agreement (The Recommended Route)

1. *Drafting the Convenio Regulador: Both parents, assisted by their lawyers (they can share the same lawyer to save costs), draft a proposed convenio regulador*. This document will detail the schedule for sharing time, the use of the family home, the contribution to the children's expenses, and the liquidation of assets if applicable.
2. Filing the Lawsuit: A mutually agreed lawsuit for divorce or parent-child measures is filed before the Juzgados de Primera Instancia (Familia) (Courts of First Instance [Family]) of the family home, attaching the convenio regulador and the children's birth certificates.
3. Ratification in Court: Both parents must personally appear in court within approximately 15 to 30 days to ratify (sign) the lawsuit and the agreement before the Letrado de la Administración de Justicia (LAJ - Court Clerk).
4. *Report from the Ministerio Fiscal:* The file is transferred to the Prosecutor to verify that the agreement is not harmful to the minors.
5. Ruling: If the Prosecutor's report is favorable and the judge does not find abusive clauses, a divorce or measures ruling is issued approving the agreement, which is officially registered in the Registro Civil (Civil Registry).

Route 2: Contentious Route (Without Agreement)

1. Filing the Contentious Lawsuit: The parent who wishes to have joint custody presents a unilateral lawsuit detailing the reasons and providing evidence justifying that this arrangement is best for the minors.
2. Answering the Lawsuit: The other parent has a period of 20 business days to answer the lawsuit, opposing joint custody or proposing alternative measures (such as sole custody).
3. Request for Provisional Measures (Optional but Recommended): Since the judicial process can take months, a hearing for medidas provisionales (provisional measures) is usually requested so that the judge can regulate the children's situation temporarily while the main trial is resolved.
4. Psychosocial Evaluation: This is the key piece of evidence in these processes. A psychologist and a social worker from the court (the Equipo Psicosocial Judicial [Judicial Psychosocial Team]) interview the parents, observe the minors, and issue a technical report recommending the most appropriate custody arrangement.
5. The Trial Hearing: Documentary evidence is examined, the parties are questioned, witnesses testify, and the results of the psychosocial report are presented. Likewise, the exploración of the minors is carried out if they are over 12 years old.
6. Judicial Ruling: The judge issues a ruling deciding on custody, visitation rights, child support, and the use of the home.

Deadlines, Costs, and Key Figures in the Process

To plan the process properly, it is essential to know the financial costs and estimated times in the Spanish judicial system:

• Duration of a mutual agreement process: Between 2 and 4 months, depending on the court's workload.
• Duration of a contentious process: Between 8 and 18 months, which can be extended if appealed before the Audiencia Provincial (Provincial Court).
• *Cost of mutual agreement (sharing a lawyer and procurador [court representative]): Between 600 € and 1,200 €* in total (split between both).
• *Cost of a contentious process (each party with their own lawyer and procurador): Between 1,500 € and 4,000 €* per parent, depending on the complexity and whether a private expert report is required.
• Cost of a private psychological expert report (if the court's report is contested): Between 800 € and 2,000 €.
• Minimum age for the mandatory hearing of the minor: 12 years (or younger if they have sufficient maturity).

Financial Aspects: Child Support and Use of the Home

There is a false myth that when joint custody is granted, the obligation to pay child support automatically disappears. This is not the case. The Código Civil seeks balance so that minors do not suffer a decline in their standard of living when changing homes.

Child Support in Joint Custody

If there is a notable disparity in income between the parents, the judge will impose pensión de alimentos (child support) on the higher-earning parent to balance the family finances during the periods the minors stay with each parent.

> Example 1 (Disparate Income): Carlos has a net monthly income of 3,500 € and keeps the children on an alternating week basis. Lucía, the mother, has an income of 1,100 € and lives in a rented flat for 700 €. Although the time spent with the children is 50% for each, the judge will establish that Carlos pays Lucía a child support pension of 250 € monthly per child to ensure that the minors enjoy a similar standard of living in both homes, in addition to paying extraordinary expenses at 70% for Carlos and 30% for Lucía.

> Example 2 (Balanced Income): Marta and Jorge have similar incomes (Marta earns 1,800 € and Jorge 1,950 €). In this case, no cross-child support is established. Each parent pays the ordinary expenses of the minor (food, utilities, leisure) when the children are at their house. For mandatory common expenses (school, tuition, health insurance), they open a joint current account where each deposits a fixed monthly amount (for example, 150 € monthly each) and extraordinary expenses (orthodontics, tutoring) are paid at 50% each.

Use of the Family Home

In joint custody, the use of the family home is no longer automatically assigned to the custodial parent (since both are). The Tribunal Supremo usually applies two solutions:

1. Attribution to the parent most in need of protection: The use of the home is granted for a limited time (for example, 2 or 3 years) to the parent with fewer financial resources so they can rebuild their life and find a rental. Once that period has expired, the house is sold or liquidated.
2. *The "nest home" model (casa nido - rarely recommended by courts):* The children always remain in the family home and it is the parents who move in and out of it according to their week of custody. Although it seems ideal for the children, in practice it generates constant neighbor conflicts, cleaning disputes, and a high financial cost, as it requires maintaining three active homes (the common one and the two individual ones for the parents).

Mistakes You Must Avoid

Making strategic mistakes during the breakup can ruin the chances of obtaining joint custody. Pay attention to these common errors:

• Leaving the family home without prior justification: Leaving the shared home and leaving the children with the other parent without signing a temporary custody agreement can be interpreted by the judge as disinterest or tacit consent to sole custody for the other parent. If living together is unsustainable, an attribution of the home or medidas provisionalísimas (urgent provisional measures) must be requested.
• Using children as messengers or spies: Questioning children about what the other parent does during their custody time or using them to send financial complaints ("tell your father to pay me") is immediately detected by the psychologists of the Equipo Psicosocial and severely penalizes suitability for joint custody.
• Lack of flexibility and extreme rigidity: Opposing occasional changes of days for justified work reasons of the other parent shows a complete lack of co-parenting capacity. Judges positively value generosity and schedule flexibility for the benefit of the minors.
• Filing instrumental domestic violence complaints: Using the criminal protection system in a spurious way to try to block joint custody is reckless. In addition to constituting a crime, it destroys any possibility of agreement and seriously harms the emotional development of the children.

Frequently Asked Questions (FAQ)

Can joint custody be requested if the baby is breastfeeding?

It is not advisable nor is it usually granted during the period of exclusive breastfeeding (generally up to 9 or 12 months of age). In these cases, sole maternal custody is established with a progressive visitation schedule for the father (visits of a few hours without overnight stays). Once this stage is passed and solid food is consolidated, the transition to joint custody can be requested.

What happens if one of the parents radically opposes it?

The opposition of one of the parents does not prevent the judge from granting joint custody. If the psychosocial report shows that both parents are suitable, that the distance between homes allows it, and that it is best for the minor, the judge will grant it even against the will of one of the parties.

Can an already established sole custody arrangement be modified to joint custody?

Yes, it is perfectly possible through a procedure of Modificación de Medidas (Modification of Measures). To do this, a "substantial change in circumstances" must be proven since the first ruling was issued. Examples of this are: a change in work schedules that now allow for a work-life balance, the growth of the minors (who are no longer babies), or a change of residence that brings the parents' homes closer together.

How does the opinion of a child under 12 affect the trial?

Although the law sets 12 years as the mandatory age to hear the minor, if the child is 10 or 11 years old and demonstrates maturity and solid arguments (uninfluenced by either parent), the judge and the court psychologist will listen to and carefully assess their preferences regarding the custody model.

In Summary

• Joint custody is the preferred regime in Spain, always seeking the best interests of the minor and parental co-responsibility.
• It will be absolutely denied if there is a criminal process for gender violence or well-founded indications of it in accordance with the Código Civil and Ley Orgánica 1/2004.
• The proximity of homes and schedule compatibility are indispensable logistical requirements for the arrangement to be viable on a day-to-day basis.
• It does not exempt from the payment of child support if there is a significant financial imbalance between the income of both parents.
• *The report of the court's Equipo Psicosocial*** is the most influential expert evidence for the judge's final decision in contentious proceedings.
• It can be requested at any time through a modification of measures process if family or work circumstances change.

General legal information, not personalised legal advice. For your specific situation, ask your question for free at AbogadoAI — answers grounded in Spanish law (BOE), in English.

This is general information, not legal advice. Verify on the BOE or consult a lawyer for your specific case.