Missouri Intestacy Laws: Who Inherits Without a Will in 2026

SimplyTrust Editorial·May 25, 2026·Updated July 8, 2026·4 min read

Missouri's intestacy laws create rigid inheritance rules that often don't reflect modern families' wishes, with complex formulas for spouse and children shares.

What Happened

Fritz Law LLC published a comprehensive guide explaining Missouri's intestate succession laws and probate procedures when someone dies without a valid will. The article details how Missouri statutes determine inheritance rights, the various probate options available to families, and the specific deadlines that govern estate administration in the state.

The guide outlines Missouri's hierarchical inheritance structure, which prioritizes surviving spouses and children but creates different distribution formulas depending on family composition. When a surviving spouse exists but no children, the spouse receives the entire estate. However, when both spouse and children survive, the distribution becomes more complex, with the spouse receiving First $20,000 plus half of the remaining estate.

Fritz Law emphasizes the importance of timing in Missouri probate proceedings, noting that applications for letters of administration must generally be filed within one year of death. The firm also explains Missouri's small estate procedures, which apply when the total estate value does not exceed $40,000 and at least 30 days have passed since death.

What It Means

Missouri's intestacy laws create a rigid framework that often fails to reflect modern family relationships and individual wishes. The state's distribution scheme can produce unexpected results, particularly for blended families where children from prior relationships may inherit alongside a current spouse. When a surviving spouse has stepchildren, those stepchildren receive equal shares with any biological children of the marriage, while the spouse's portion is reduced to exactly half the estate.

The $40,000 threshold for Missouri's simplified probate procedures represents a relatively low bar compared to many states. This means most estates containing real property or substantial personal assets will require full probate administration, triggering court supervision and the associated costs. Missouri requires executors to post a surety bond, though this requirement can be waived by the will. Without a will to waive the bond requirement, families face additional expenses that typically cost 0.5% of the estate value annually.

The one-year deadline for initiating probate proceedings creates significant complications for families who delay action. After this window closes, Missouri limits options to small estate affidavits, refusal of letters proceedings, or determination of heirship petitions. These alternative procedures often prove more cumbersome than timely probate administration would have been. Missouri's 6 months creditor claim period provides some protection for estates, but only if proper notice procedures are followed through the probate court.

How Missouri Compares to Other States

Missouri's intestacy rules align with many common law states but differ significantly from community property jurisdictions. The state's 120 hours survival requirement ensures that simultaneous deaths don't create unnecessary complications. However, Missouri's specific dollar amounts for spousal shares haven't kept pace with inflation as well as some neighboring states. The First $20,000 plus half of the remaining estate formula may seem modest given today's asset values, potentially leaving surviving spouses with inadequate support in larger estates.

Context from SimplyTrust

Missouri families can avoid the complications of intestate succession entirely through proper estate planning. A revocable living trust allows individuals to specify exactly how assets should be distributed, regardless of family structure or state default rules. Unlike Missouri's rigid intestacy formulas, trusts can accommodate complex family situations, provide for unmarried partners, and include specific instructions for asset management.

For families concerned about Missouri's probate requirements, SimplyTrust's probate calculator provides state-specific estimates of the costs and timeline families can expect. The calculator incorporates Missouri's statutory fee schedules and typical court processing times to help families understand the financial impact of probate versus trust-based planning.

Source: Intestate Succession in Missouri Probate - Fritz Law LLC

Missouri Estate Law GuideProbate costs, will requirements, trust rules, and intestate succession.

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