Missouri runs two clocks at once and takes whichever ends later, then bars the claim outright
RSMo 473.360.1 sets the bar by reference to a pair of dates rather than one. A claim is barred unless it is filed in the probate division of the circuit court “within six months after the date of the first published notice of letters testamentary or of administration or, if notice was actually mailed to, or served upon, such creditor, within two months after the date such notice was mailed, or served, whichever later occurs.” A creditor who was served personally therefore gets the longer of the two windows, not the shorter.
The consequence is stated without qualification: claims not filed in time, or not paid by the personal representative within six months after the first published notice, “are forever barred against the estate, the personal representative, the heirs, devisees and legatees of the decedent.” The bar reaches the people who inherited, not only the estate itself.
The section carries its own exclusions, and the list is long enough to matter when reading the six-month figure. It does not apply to costs and expenses of administration, exempt property, family allowance, homestead allowance, claims of the United States, or claims of any taxing authority within the United States. It also provides that “no contingent claim based on any warranty made in connection with the conveyance of real estate is barred under this section.”
Two limits on how far the rule reaches are worth separating. The statute opens “Except as provided in section 473.370,” so that section governs before this one. And it states expressly that “this six-month period does not extend any other applicable limitation periods” — a claim already dead under an ordinary statute of limitations is not revived by being inside the probate window.
Subsection 2 adds a filing duty that is easy to overlook: unless written notice of actions instituted or revived under RSMo 473.363 or 473.367 is filed in the probate division within six months after the first published notice of letters, no recovery may be had in those actions.
Source: RSMo § 473.360 (limitations on filing of claims), eff. May 23, 1996, read from the enacting state’s own published code on 2026-09-17. Quoted wording is the statute’s; the surrounding explanation is this site’s reading of it and is not legal advice.