Shared Custody in Practice: Your Children’s Routine, Decisions, and Time with Each Parent

This page is a translation of the original Portuguese text, provided for convenience. It deals with Brazilian law. If there is any discrepancy, the Portuguese version prevails. Read the original in Portuguese

Shared custody has been the rule in Brazilian law since Law 13.058/2014, but the term is often confused with alternating custody and with so-called divided residence. Understanding what sets these arrangements apart is essential to organizing your children’s routine after the parents separate, deciding where the child will have a primary residence, and, above all, making sure every decision revolves around the best interests of someone who is still growing up.

What Shared Custody Is, and What It Is Not

Shared custody is an arrangement in which the father and mother remain jointly responsible for raising their children, even though they live in different homes. Articles 1.583 and 1.584 of the Civil Code, as amended by Law 13.058/2014, establish that this model is the rule. It applies whenever both parents are fit to exercise parental authority (poder familiar), even if they do not agree with each other.

The heart of shared custody is dividing responsibilities and decisions, not splitting parenting time down the middle. Choosing a school, authorizing medical treatment, deciding on extracurricular activities, and handling financial matters are all decided together. Neither parent makes major decisions about the child’s life alone.

Many people mistakenly assume that shared custody requires a child to spend exactly half of the days with each parent. That is not the case. The child keeps a single primary residence, and parenting time is balanced according to each family’s actual circumstances, without taking away either parent’s authority over important decisions.

Alternating Custody and Divided Residence: Why They Are Not the Same Thing

Unlike shared custody, alternating custody is not expressly provided for in the Civil Code, and legal scholars and courts view it with reservations. Under this arrangement, the child lives with each parent in turn for set periods, for example one week in each home. The parent who has the child during that period exercises custody exclusively and makes decisions about the child’s routine alone.

The problem experts point to is instability. Constantly switching homes, rules, and everyday reference points can undermine a child’s sense of belonging and emotional stability. For that reason, although alternating custody is not prohibited, it is rarely a judge’s first choice. Judges tend to favor arrangements that offer more predictability.

The term divided residence, or dual residence, describes a situation in which the child maintains day-to-day ties with two homes and splits time between them. This concept concerns the physical side of parenting time: the logistics of where the child sleeps and keeps their belongings. It can coexist with shared custody, as long as one primary residence is kept for school and administrative purposes.

The practical distinction is easy to state. Shared custody is about who decides. Residence, whether single or divided, is about where the child lives. Alternating custody combines switching homes with switching who holds decision-making power. Mixing up these concepts often creates needless conflict between parents.

This distinction is not merely a matter of terminology. It guides how agreements are drafted, how child support is set, and how parents tell the school and others who is responsible for each aspect of the child’s life, avoiding confusion that ends up falling on the child.

Constantly switching homes, rules, and everyday reference points can undermine a child’s sense of belonging and emotional stability.

Primary Residence and Parenting Schedule in Daily Life

Even under shared custody, the Civil Code calls for setting a primary residence, also known as the base residence. This is the address used as the reference point for school enrollment, the child’s legal domicile, and the administrative organization of daily life. Designating it does not weaken the parents’ joint responsibility or reduce the bond between the child and the parent who lives elsewhere.

The parenting schedule (regime de convivência), in turn, is the concrete breakdown of how time will be divided. It spells out weekdays, alternating weekends, school vacations, holidays, and long holiday weekends. The clearer and more realistic the schedule, the less room there is for isolated disputes and for the feeling that one parent is being pushed out of the child’s life.

Drawing up this schedule should take into account the child’s age, the distance between the homes, the parents’ school and work routines, and the presence of siblings. A well-designed calendar balances time with each parent without turning childhood into a string of moves from house to house, while preserving quality time with both.

When the parents cannot agree, the judge sets both the primary residence and the parenting schedule, and may rely on psychosocial evaluations and testimony from the court’s technical team. Court intervention aims at an arrangement that respects the child’s established routine and minimizes abrupt disruptions.

The Child’s Best Interests as the Central Criterion

The entire design of a custody arrangement revolves around one principle: the best interests of the child and adolescent. This guiding principle comes from Article 227 of the Constitution and from the Child and Adolescent Statute (Estatuto da Criança e do Adolescente). It requires that the parents’ convenience yield to the child’s physical, emotional, and educational development needs.

In practice, this means the chosen arrangement should not be used to reward or punish either parent, or to replay disputes from the marriage. The focus is on the child’s stability, on maintaining emotional bonds with both parents, and on preserving a routine that offers security and predictability.

The viability of alternating custody is also judged in this light. If frequently switching homes harms the child’s well-being, the child’s best interests call for a different arrangement, even if both parents want it. Likewise, the primary residence is set where the child will find the most stability, not where it would be most convenient for one of the parents.

This principle gives the judge room to adapt custody to each family’s reality and to revisit earlier decisions whenever circumstances change significantly. Custody is not static: it grows and adjusts along with the child, keeping pace with new stages and needs over time.

Frequently Asked Questions

Does shared custody mean splitting the child’s time in half?

No. Shared custody divides responsibilities and decisions about the child’s life, not necessarily parenting time in equal parts. The child keeps a primary residence, and time with each parent is balanced according to the family’s real circumstances, without taking away either parent’s role in important decisions.

What is the difference between alternating custody and shared custody?

Under shared custody, both parents make decisions together, even though the child has a single primary residence. Under alternating custody, the child changes homes for set periods, and during each period the parent the child is with exercises custody exclusively. Alternating custody is not expressly provided for by law and is viewed with caution because it creates instability in a child’s routine.

Who decides the child’s primary residence?

First, the parents themselves, by agreement. If they cannot agree, the judge decides, taking into account the child’s stability, school routine, the distance between the homes, and, when necessary, psychosocial evaluations. The primary residence serves as the base for school enrollment and legal domicile, but it does not weaken the bond or the authority of the parent who lives at another address.

As informações deste artigo são de caráter informativo e não substituem consulta jurídica individualizada. Cada caso possui particularidades que exigem análise específica.