How Missouri Divorce Laws Affect Child Custody, Support, and Property Division

Missouri courts now begin custody cases, assuming each parent should have roughly half the parenting time. The parent who wants something different carries the burden of proving it. In addition, the schedule used by judges to calculate child support has changed on January 1, 2026. This means that two families with identical finances could end up with different numbers, depending on when their case was decided.

Custody Begins With a Presumption of Equal Parenting Time

Under Section 452.375 of RSMo, custody is determined based on the best interests of the child and the statute contains a rebuttable presumption that equal or approximately equal parenting time serves these interests. The rebuttal requires a preponderance of evidence weighed against statutory factors. This presumption also applies in two other circumstances: when parents agree on every aspect of custody, and when the court determines there is a pattern of domestic violence.

Missouri divides custody into two categories, which are decided separately.

• Legal custody refers to decision-making authority regarding education, medical care, and religious upbringing of the child.
• Physical custody refers to where the child resides and sleeps on a regular basis.
• Joint physical custody involves significant periods spent with each parent, although “significant” does not always mean “equal”. Therefore, the wording in your parenting plan is more important than the label itself.

Child Support Runs Through Form 14, and the Numbers Changed in 2026

Missouri uses an income sharing model under Section 452.340 and Missouri Supreme Court Rule 88.01. Both parents’ gross income is entered on Form 14. The worksheet applies the Schedule of Basic Child Support Obligations and the result is assumed to be correct unless the court makes a written finding that it would be unfair. Overnight factors are taken into account, so the parental schedule and support figure move together.

The new schedule took effect on January 1, 2026. Existing orders did not change by themselves. However, under Section 452.370, if the current guidelines move support 20% or more from the existing amount, this is a prima facie indication of a substantial and ongoing change that supports modification. If your order was issued before the update, you should re-run it.

Property Division Is “Just,” Which Is Not the Same as Equal

Missouri is not a community property state. Under Section 452.330, the court must separate each spouse’s separate property, then divide marital property and debts based on a number of factors. These factors include:

• The economic circumstances of each spouse, including the allocation of the family home
• Each spouse’s contributions to acquiring property, including homemaking
• The value of each spouse’s separate property
• The conduct of the parties during marriage
• Custodial arrangements for minor children

The property acquired during the marriage is considered marital regardless of whose name appears on the title. Overcoming this presumption requires evidence of a specific legal exception, such as a gift or inheritance. Missouri courts also interpret “conduct” broadly, rather than limiting it to financial misconduct.

One detail is constantly overlooked. The property part of the judgment is final and cannot be modified. Custody and support may be revisited if circumstances change, but the split of the house, retirement accounts, and debts cannot.

A 2026 Change Worth Knowing

Effective August 28, 2026, pregnancy will no longer prevent a Missouri court from entering a judgment of dissolution. Courts have frequently paused final judgments until after birth so parentage and support can be resolved in one decree. A judge can now finalize the dissolution and reserve parentage, custody, and child support for proceedings after the child is born.

Get Your Plan Right Before It Becomes an Order

The equal parenting time presumption, the 2026 support schedule, and finality of property division all require preparation. When facing difficult family law concerns, contact Columbia Family Law Group LLC right away. With over 35 years of experience in Missouri’s legal system, our firm can review your parenting plan, Form 14, and marital balance sheet before anyone else’s version becomes your reality. Contact us today for a consultation.