Who Gets Custody of Your Kids? Guardianship Designation in Missouri Estate Plans

Most parents assume that if something happens to them, their children will automatically go to the grandparents, or to whichever relative seems most obvious. Missouri law does not work that way. Without a written guardianship nomination, a probate judge, not you, decides who raises your children, based on a courtroom hearing where relatives can petition and disagree.

This guide explains how guardianship designation works in a Missouri estate plan, what happens if you skip it, and how to name a guardian your children will actually be placed with.

Who Decides Guardianship If a Missouri Parent Dies Without a Will?

If both parents die without naming a guardian, a Missouri probate court appoints one after a hearing, guided by the child’s best interests rather than the parents’ likely wishes. Any relative, or in some cases a non-relative, can petition to be considered, which can turn a family’s worst moment into a contested legal proceeding.

The judge is not bound by birth order, closeness of relation, or who “everyone assumed” would take the children. Grandparents, aunts, uncles, and even family friends can all put themselves forward, and the process can take months to resolve, months during which your children’s living situation is unsettled.

How Do You Name a Guardian for Your Children in Missouri?

Missouri parents nominate a guardian for their minor children under RSMo § 475.045.1(3), most commonly by naming that person in a validly executed will. The nomination is not automatically binding on the court, but Missouri judges give substantial weight to a parent’s written nomination and rarely override it absent a specific concern about the nominated guardian’s fitness.

A complete guardianship nomination should include:

• A primary guardian, the person you want raising your children
• At least one alternate guardian, in case your first choice is unable or unwilling to serve when the time comes
• Any specific guidance about values, education, or religious upbringing you want the guardian to consider
• A separate decision about who manages the children’s inheritance, which does not have to be the same person as the guardian

Should the Guardian Also Control the Money?

No, naming the same person as both guardian and financial manager is one of the most common mistakes we see, and it is rarely the best structure. Guardianship (who raises the child) and control of inherited assets (who manages the money) are separate roles, and splitting them provides a built-in check.

Most Missouri estate plans handle this by directing a child’s inheritance into a trust rather than distributing it outright at age 18. A trustee, who can be the guardian, a different trusted person, or a corporate trustee, manages and distributes funds for the child’s benefit according to terms you set: tuition and living expenses now, staged distributions at 25 and 30, or whatever structure fits your family. Without this step, an 18-year-old inherits their full share outright, with no guidance on how to use it.

What Happens If Your Named Guardian Can No Longer Serve?

If your primary guardian has died, moved away, or is otherwise unable to serve and you named no alternate, the decision reverts to the probate court under the same process as if no guardian had been named at all. This is why every guardianship nomination needs at least one backup.

It is also worth naming a guardian even if you are confident a specific relative would “obviously” step in. Confidence is not a legal document, and without your written nomination, that relative still has to petition the court and potentially compete with other family members who believe they are equally, or more, entitled to raise your children.

Talking to Your Chosen Guardian First

Before naming anyone in your documents, have a direct conversation with them. Ask whether they are willing and able to take on the responsibility, and be honest about what it would involve, their own family situation, finances, and living space all matter. A guardian who learns about the nomination for the first time at your funeral is far more likely to decline or contest the arrangement.

The same applies to your alternate guardian. Both should know they have been named, understand roughly what your parenting values and expectations are, and know where to find your full estate plan if the time comes.

Working With a Missouri Estate Planning Attorney on Guardianship

Guardianship nominations sound simple, but they interact with the rest of your estate plan in ways that are easy to get wrong, from how inheritance is structured for a minor to how the document should be worded to give a court clear guidance. An attorney at Mid-America Law Practice can make sure your guardianship nomination is properly executed, integrated with a trust for your children’s inheritance, and reviewed as your family’s circumstances change.

General information on Missouri guardianship and conservatorship proceedings is available through the Missouri Judiciary website.

Frequently Asked Questions: Guardianship of Minor Children in Missouri

1. Is a guardian nomination in a will legally binding in Missouri?

It is not automatically binding, but Missouri courts give it significant weight and rarely override a parent’s written nomination unless there is a specific concern about the nominated guardian’s fitness.

2. Can I name different people as guardian and as manager of my child’s inheritance?

Yes, and it is often recommended. Splitting the caregiving role from the financial management role creates accountability and protects your children’s inheritance.

3. What happens if I don’t name a guardian for my children?

A Missouri probate court decides who raises your children after a hearing where relatives may petition and compete, based on the court’s assessment of the child’s best interests.

4. Do I need to name a backup guardian?

Yes. If your first-choice guardian cannot serve and no alternate is named, the decision reverts to the probate court exactly as if no guardian had been nominated at all.

5. Can a single parent name a guardian if the other parent is still alive?

A guardianship nomination only takes effect if both parents are deceased or otherwise unable to care for the child. It does not override a surviving parent’s custodial rights.

6. At what age does a child inherit outright if I don’t set up a trust?

Without a trust or other structure, a child typically inherits their full share outright at age 18, with no guidance or staged distribution.

7. Should I tell the person I’m naming as guardian?

Yes. Confirm they are willing and able to serve before naming them, and make sure both your primary and alternate guardian understand your parenting values and where to find your estate planning documents.

8. How often should I review my guardianship nomination?

Review it every time you review the rest of your estate plan, and immediately after any major change in your named guardian’s life circumstances, a move, divorce, new baby, or health issue.

About the attorney

Azra Ahmad, Founder & Managing Attorney

Azra focuses on estate planning, elder law, personal injury and traffic law for families across the St. Louis area. She earned her JD from Saint Louis University School of Law, is licensed in Missouri and Illinois, and is a member of The Missouri Bar, WealthCounsel and ElderCounsel. Before law, she worked as a speech-language pathologist with children and seniors.

Read Azra’s full bio →