Allocation of Parental Responsibilities Illinois: The Full Framework Explained

What "Allocation of Parental Responsibilities" Means

If you're searching for "legal custody" or "physical custody" in Illinois, you won't find those terms in the current law. Since January 1, 2016, the Illinois Marriage and Dissolution of Marriage Act (IMDMA) uses a different framework: allocation of parental responsibilities.

This isn't just a name change. The old system lumped major decisions and physical time into one or two buckets. The current law separates them into two distinct components that the court evaluates independently:

• Significant decision-making responsibilities — the authority to make major decisions about the child's life (replacing what used to be called "legal custody")
• Parenting time — the schedule of when the child is physically with each parent (replacing "physical custody" and "visitation")

The court can allocate these differently. One parent can hold sole decision-making authority for education while both share authority over healthcare, and the parenting-time schedule can be entirely separate from either of those decisions.

The Four Decision-Making Categories

Under 750 ILCS 5/602.5, significant decision-making is divided into four specific domains:

Education — school enrollment, tutoring, special education programs, extracurricular academic choices. The parent with decision-making authority for education picks the school. Day-to-day homework help and school-event attendance fall under parenting time, not decision-making.

Health — medical, dental, surgical, optical, psychological, and psychiatric treatment. This covers choosing doctors and approving treatment plans, not routine care like giving medication during parenting time.

Religion — the child's religious upbringing and participation. Courts generally won't allocate religious decision-making unless there's evidence of a prior agreement or established course of conduct regarding the child's religious training.

Extracurricular activities — organized sports, arts programs, cultural activities, camps. This category often generates the most conflict because it directly impacts both parents' schedules and finances.

Each category can be allocated jointly (both parents decide together), solely to one parent, or divided differently per category. This granularity is one of the advantages of the Illinois system — it avoids the all-or-nothing approach of the old joint/sole custody framework.

What's an Allocation Judgment?

The allocation judgment is the court's final order that incorporates the parenting plan. It's the binding document that establishes decision-making authority, the parenting-time schedule, and related parenting provisions; child support is addressed in the applicable support order. Once the judge signs the allocation judgment, it becomes enforceable by contempt.

If parents agree, the allocation judgment simply adopts their joint parenting plan. In contested cases, the judge issues the allocation judgment after a trial, applying the best-interests factors under 750 ILCS 5/602.5(c) for decision-making and 750 ILCS 5/602.7(b) for parenting time.

The allocation judgment can be modified after entry. Within the first two years, a motion to modify decision-making responsibilities generally requires a showing of serious endangerment, while parenting time may be modified at any time when changed circumstances make modification necessary for the child's best interests. After two years, the general standard for decision-making requires a substantial change in circumstances and a modification that serves the child's best interests.

How the Old Terms Map to the New Framework

For anyone researching Illinois custody who's familiar with the older terminology:

Many attorneys, courts, and even some judges still use the old terms informally. But the legal documents — your parenting plan, the allocation judgment, and any motions — must use the current statutory language.

Day-to-Day Decisions vs. Significant Decisions

A common source of confusion: the parent exercising parenting time always has authority over "caretaking functions" and day-to-day decisions during their time. That includes meals, bedtime, discipline, homework, and routine activities. You don't need the other parent's permission to take the child to the park or sign a permission slip for a field trip.

Significant decisions are the major, long-term choices — which school, which doctor, whether to start orthodontia, whether to enroll in travel soccer. The distinction matters because parents who share decision-making sometimes try to control each other's day-to-day choices, which isn't what the statute authorizes.

Putting It Together in Your Parenting Plan

The Illinois Child Custody & Parenting Plan Guide includes a decision-making matrix that walks you through each of the four categories, helping you decide which arrangement works for your family — joint, sole, or divided — and draft the specific language your parenting plan needs.

See more Illinois guides →