Missouri Revised Statutes

Mo. Rev. Stat. § 210.845 (2026)

Modification of decree, when

✓ current as of May 2026

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210.845. Modification of decree, when — procedure, burden. — 1. The provisions of any decree respecting support may be modified only upon a showing of changed circumstances so substantial and continuing as to make the terms unreasonable. In a proceeding for modifications of any child support award, the court, in determining whether or not a substantial change in circumstances has occurred, shall consider all financial resources of both parties, including the extent to which the reasonable expenses of either party are, or should be, shared by a spouse or other person with whom he cohabits, and the earning capacity of a party who is not employed. If the application of the guidelines and criteria set forth in supreme court rule 88.01 to the financial circumstances of the parties would result in a change of child support from the existing amount by twenty percent or more, then a prima facie showing has been made of a change of circumstances so substantial and continuing as to make the present terms unreasonable.

2. When the party seeking modification has met the burden of proof set forth in subsection 1 of this section, the child support shall be determined in conformity with criteria set forth in supreme court rule 88.01.

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(L. 1987 S.B. 328 § 18, A.L. 1993 S.B. 253)

Notes of Decisions

Cited in 5 cases (1 in the last 5 years), 1988–2021 · leading case: Amburn v. Aldridge, 296 S.W.3d 32 (Mo. Ct. App. 2009).

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Amburn v. Aldridge, 296 S.W.3d 32 (Mo. Ct. App. 2009). · cites it 9× “” § 210.845, RSMo Supp.1988. By contrast, the current version of § 210.”

S.J v. Ex Rel. Blank v. Voshage, 860 S.W.2d 802 (Mo. Ct. App. 1993). · cites it 2× “§ 210.845 RSMo Supp.1988. We find the trial court had continuing jurisdiction under these statutory provisions to hear *805 plaintiffs’ motion for attorney’s fees on appeal.”

Kerby v. Kerby, 2002 OK 91 (Okla. 2002). “); Mo.Rev.Stat. § 210.845 (2001) (A twenty percent deviation from existing amount of support is prima facie evidence of change of circumstances.”

Pritchard v. Pritchard, 763 S.W.2d 669 (Mo. Ct. App. 1988). · cites it 2× “Section 210.845 of the UPA provides that “[support orders are modifiable prospectively, as provided by section 452.”

F.J.M., Individually & as Next Friend for A.E.J.J. v. F.L.J. (Mo. Ct. App. 2021). · cites it 19× “" Section 210.845, RSMo Supp.1988. By contrast, the current version of section 210.”

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