Michigan’s 12 best interest factors are the checklist a judge must work through, one by one, before deciding custody under the Child Custody Act of 1970. They are set out in MCL 722.23, and every contested custody ruling in the state depends on how each parent measures up against them. A judge cannot pick and choose: each factor must be addressed on the record, and skipping one is reversible error on appeal.1Michigan Legislature. Michigan Compiled Laws Section 722.23 – Best Interests of the Child Defined The Act reaches divorce cases, paternity cases, and disputes brought by non-parents such as grandparents.2Michigan Legislature. Michigan Compiled Laws – Act 91 of 1970
What Custody Means Before the Factors Apply
Michigan law splits custody into two questions the factors then decide. Physical custody is where the child lives day to day. Legal custody is who makes the major decisions about education, healthcare, and religious upbringing. Joint custody, defined in MCL 722.26a, can mean alternating residence, shared decision-making, or both.3Michigan Legislature. Michigan Compiled Laws Section 722.26a – Joint Custody Most contested cases end somewhere in the middle: one parent with primary physical custody, both sharing legal custody. The 12 factors are how the court gets there.
The 12 Factors in MCL 722.23
Factor A: The Love and Emotional Ties Between Parent and Child
The court looks at the strength of the emotional bond, not the volume of time logged. Judges pay attention to who the child turns to when scared or upset, who handles bedtime routines, and whether the parent is tuned in to the child’s emotional world. A parent who works long hours but is fully present on evenings and weekends can score well if the bond is genuine.
Factor B: Capacity to Give Love, Guidance, and Education
This factor asks whether each parent can give the child affection, guidance, and a consistent approach to education and, where relevant, religious upbringing. Attending conferences, helping with homework, and communicating with teachers gives a parent concrete evidence to point to.
Factor C: Capacity to Provide Food, Clothing, and Medical Care
Can each parent meet the child’s material needs? This is about capacity, not wealth. A lower-earning parent who manages resources responsibly can satisfy this factor. The court also weighs access to healthcare and whether a parent has historically met these needs without gaps.
Factor D: Length of Time in a Stable Environment
Courts weigh how long the child has lived in a stable, satisfactory setting and the value of keeping that continuity. If a child has been in the same home and school for years, uprooting the arrangement requires a strong justification. Inertia works in favor of the status quo here, and it grows heavier the longer the current arrangement has lasted.
Factor E: Permanence of the Proposed Home
This evaluates whether the household in question functions as a stable family unit. Frequent moves or a revolving door of partners cut against a parent. The court wants to see that the home the child would live in has staying power.
Factor F: Moral Fitness
Moral fitness sounds like a character trial, but Michigan courts have narrowed it. The question is whether a parent’s conduct directly and negatively affects the child. Personal lifestyle choices matter only if they spill into the child’s experience. Criminal history, dishonesty in court, or exposing the child to harmful situations all carry weight.
Factor G: Mental and Physical Health
A diagnosis alone is not disqualifying. What matters is whether a condition is managed and whether it impairs day-to-day parenting. Untreated substance abuse or a serious unmanaged mental health condition carries real weight; a parent actively managing their health through treatment typically satisfies this factor.
Factor H: The Child’s Home, School, and Community Record
Attendance, grades, extracurriculars, friendships, and behavioral reports all factor in. A child thriving where they are gives the court a reason to preserve that. A child whose performance or behavior has deteriorated under one parent’s care signals a problem the court needs to address.
Factor I: The Child’s Preference
If the judge finds the child old enough and mature enough, the child gets a chance to express a preference. This typically happens in the judge’s chambers, without parents or lawyers present. The preference is not binding, but judges take it seriously, especially with older teenagers. Coaching a child almost always backfires, because experienced judges recognize rehearsed answers quickly.
Factor J: Willingness to Support the Other Parent’s Relationship
This is the factor where parents most often hurt themselves. The court evaluates whether each parent genuinely encourages a close relationship between the child and the other parent. Badmouthing, withholding school or medical information, blocking phone calls, or making exchanges difficult all count against you. The statute includes a carve-out: a parent who takes reasonable steps to protect the child from domestic violence or sexual assault cannot be penalized under this factor.1Michigan Legislature. Michigan Compiled Laws Section 722.23 – Best Interests of the Child Defined
Factor K: Domestic Violence
Any history of domestic violence gets scrutinized, whether or not the child personally witnessed it. The court does not distinguish between violence directed at the other parent and violence the child saw firsthand. Documented patterns, protective orders, and criminal convictions all weigh heavily, and even a single serious incident can shift the outcome when it raises safety concerns.
Factor L: Any Other Relevant Consideration
The final factor is a catch-all. It might cover the child’s bond with half-siblings or stepsiblings, a parent’s work schedule and travel demands, the distance between the parents’ homes, or a child’s special medical or educational needs. Judges use it sparingly, but it prevents a rigid application of the first 11 from ignoring something important about the child’s actual life.
The Established Custodial Environment
The factors do not operate in a vacuum. Before ruling, the court must decide whether the child has an established custodial environment with one or both parents. Under MCL 722.27, that environment exists when a child has lived with a particular person long enough that the child naturally looks to that person for guidance, comfort, discipline, and everyday needs.4Michigan Legislature. Michigan Compiled Laws Section 722.27 – Child Custody Disputes, Powers of Court The court considers the child’s age, the living situation, and whether both the adult and child treat the relationship as permanent.
A child who has lived primarily with one parent for years almost certainly has an established custodial environment with that parent. A child who splits time roughly equally may have one with both. Temporary arrangements, such as staying with a relative during a parent’s hospitalization, generally do not create one. The finding matters because it controls the evidentiary bar for any change.
How Strong the Evidence Has to Be
When an established custodial environment exists, the parent seeking a change must show by clear and convincing evidence that the change serves the child’s best interests.4Michigan Legislature. Michigan Compiled Laws Section 722.27 – Child Custody Disputes, Powers of Court That is a high standard. The evidence must be highly probable and leave no serious doubt. Vague complaints about the other parent’s household will not meet it.
When no established environment exists, the court applies the lower preponderance of the evidence standard. The requesting party then has to show only that the proposed change is more likely than not in the child’s best interest. Changing custody from a stable, long-term arrangement is deliberately difficult; adjusting a newer arrangement gives the court more flexibility.
Joint Custody and the Factors
Michigan does not presume joint custody, but when either parent requests it, the judge must consider it and explain on the record why the request was granted or denied. The court evaluates the same 12 factors plus one additional question: whether the parents can cooperate on major decisions.3Michigan Legislature. Michigan Compiled Laws Section 722.26a – Joint Custody When both parents agree to joint custody, the court must approve it unless clear and convincing evidence shows the arrangement would harm the child. During periods when the child lives with one parent, that parent handles routine decisions without needing the other parent’s permission. Joint custody does not eliminate child support; support is calculated from each parent’s resources and the child’s needs regardless of the custody label.
How Domestic Violence Reaches Beyond Factor K
Factor K makes domestic violence its own consideration, but its effects ripple across several other factors. A history of violence can undermine a parent’s showing on moral fitness (Factor F), mental and physical health (Factor G), and especially willingness to facilitate the other parent’s relationship (Factor J). Courts treat documented abuse as a serious safety concern that frequently leads to restrictions on custody and parenting time, including supervised visitation.
The statutory carve-out under Factor J matters in these cases. A parent who takes reasonable protective action to shield the child from abuse or sexual assault cannot have that action held against them.1Michigan Legislature. Michigan Compiled Laws Section 722.23 – Best Interests of the Child Defined Parents who flee abusive situations sometimes face accusations of alienation or interference; the statute draws a clear line that protecting a child from violence is never a mark against the protecting parent.