Missouri
Legal Separation in Missouri: Requirements and Conversion (2026)
Independently fact-checked against primary sources (last audited October 8, 2026). · 11 primary sources cited on this page. How we verify our legal content
Missouri allows legal separation. Under RSMo 452.305, a circuit court enters a judgment of legal separation when it finds there is still a reasonable likelihood the marriage can be preserved, and either spouse can later ask the court to convert that judgment into a divorce, but no earlier than 90 days after it is entered (RSMo 452.360.3).
Information last verified on 2026-10-08. This article has not been reviewed by a licensed lawyer.
Jurisdiction scope: This article covers legal separation under RSMo 452.305, 452.310, 452.325, 452.330, 452.335 and 452.360, and abandonment maintenance under RSMo 452.130. It does not cover how maintenance or child support amounts are calculated, inheritance effects of a legal separation, or other states' law. For divorce, see Missouri divorce laws.
Does Missouri allow legal separation?
Yes. Missouri law provides for a "judgment of legal separation," filed in circuit court under the same caption as a divorce: "In re the Marriage of ______ and ______" (RSMo 452.300.2).
The key difference from divorce is the court's finding about the marriage. RSMo 452.305 directs the court to enter a judgment of legal separation if, among other requirements, it "finds that there remains a reasonable likelihood that the marriage can be preserved and that therefore the marriage is not irretrievably broken."
Requirements for a legal separation in Missouri
| Requirement | Rule | Statute |
|---|---|---|
| Residency | One spouse a Missouri resident, or a member of the military stationed in Missouri, for 90 days immediately before the case starts | RSMo 452.305 |
| Waiting period | 30 days have passed since the petition was filed | RSMo 452.305 |
| Finding about the marriage | A reasonable likelihood the marriage can be preserved, so it is not irretrievably broken | RSMo 452.305 |
| Petition | Must allege that the marriage is not irretrievably broken and that there is a reasonable likelihood it can be preserved | RSMo 452.310 |
| Related issues | Custody, child support, maintenance and property considered and provided for, to the extent of the court's jurisdiction | RSMo 452.305 |
RSMo 452.310 also abolishes the old fault-era defenses of condonation, connivance, collusion, recrimination, insanity and lapse of time.
2026 amendments to 452.305 and 452.310
H.B. 1908 & 2337 (2026), effective August 28, 2026, added a new subsection 3 to RSMo 452.305: "Pregnancy status shall not prevent the court from entering a judgment of dissolution of marriage or legal separation." The act added the same proviso to RSMo 452.310.2(5), which still requires the petition to state whether the wife is pregnant. The other 452.305 requirements quoted above were not changed by the 2026 act.
What a Missouri court can order in a legal separation
A legal-separation case covers the same financial and parenting issues as a divorce:
- Property and debts. Under RSMo 452.330.1, the court sets apart each spouse's nonmarital property and divides marital property "in such proportions as the court deems just." Missouri is not a community-property state.
- Maintenance. Under RSMo 452.335.1, the court may award maintenance if it finds the spouse seeking it lacks sufficient property to provide for reasonable needs and is unable to support himself or herself through appropriate employment, or is the custodian of a child. See Missouri alimony laws.
- Children. RSMo 452.305 requires the court to consider and provide for child custody and child support. See Missouri child custody laws.
The property ruling is permanent. RSMo 452.360.2 provides: "The court's judgment of dissolution of marriage or legal separation as it affects distribution of marital property shall be a final judgment not subject to modification."
Separation agreements
Spouses can settle the case with a written separation agreement covering maintenance, property, custody, support and visitation. Under RSMo 452.325, the terms bind the court unless the court finds them unconscionable. Terms concerning the children are an exception to that rule.
Converting a legal separation to a divorce in Missouri
A judgment of legal separation is not a judgment of dissolution, but Missouri provides a direct path from one to the other. RSMo 452.360.3 provides:
"No earlier than ninety days after entry of a judgment of legal separation, on motion of either party, the court may convert the judgment of legal separation to a judgment of dissolution of marriage."
Conversion is discretionary: the statute says the court "may" convert. Under RSMo 452.360.4, if both spouses move to set aside the judgment of legal separation, the court shall set it aside.
A judgment of legal separation is final when entered, subject to the right of appeal (RSMo 452.360.1). This page does not cover whether a legally separated spouse may remarry before conversion, or how a legal separation affects inheritance; ask a Missouri lawyer.
Abandonment maintenance: a separate option
Missouri has a separate statute for support without a separation or divorce judgment. RSMo 452.130 provides:
"When a person, without good cause, shall abandon his or her spouse, and refuse or neglect to maintain and provide for him or her, the circuit court, on his or her petition for that purpose, shall order and adjudge such support and maintenance to be provided and paid by such person for the spouse and the spouse's children"
This action is aimed at a spouse who has abandoned the other without good cause and failed to provide support.
Paternity after a separation decree
Missouri's paternity statute, RSMo 210.822.1(1), includes a provision addressing the period after "a decree of separation is entered by a court." Ask a Missouri lawyer how the paternity presumption applies to a child born during or after a legal separation.
Where to file
Legal separation cases are filed in circuit court, in the county where the petitioner or the respondent lives (RSMo 452.300.5). The Missouri courts' case-type list groups them under "Legal Separation/Annulment/Separation Maintenance." The circuit clerk can explain local forms and filing steps.
Disclaimer: This article provides general legal information about legal separation under Missouri law (RSMo 452.130, 452.300, 452.305, 452.310, 452.325, 452.330, 452.335 and 452.360), verified on 2026-10-08. It is not legal advice. For advice about your situation, consult a lawyer licensed in Missouri or ask the circuit clerk in your county.
Related
- Legal separation laws in every state
- Missouri divorce laws
- Missouri alimony laws
- Missouri child custody laws
- Missouri child support laws
Last updated: 2026-10-08.
Frequently Asked Questions
How do you get a legal separation in Missouri?
File a petition in circuit court alleging the marriage is not irretrievably broken and can likely be preserved (RSMo 452.310); the court enters a judgment of legal separation if it makes that finding and the residency and 30-day requirements are met (RSMo 452.305).
How long do you have to live in Missouri to file for legal separation?
One spouse must have been a Missouri resident, or stationed in Missouri with the military, for 90 days immediately before filing, and 30 days must pass after the petition is filed (RSMo 452.305).
Can a Missouri legal separation be turned into a divorce?
Yes. No earlier than 90 days after the judgment, either spouse may ask the court to convert it to a dissolution of marriage, and the court may do so (RSMo 452.360.3).
Is property divided in a Missouri legal separation?
Yes. The court sets apart nonmarital property and divides marital property as it deems just (RSMo 452.330.1), and that division is final and cannot be modified later (RSMo 452.360.2).
Can a separated spouse get support in Missouri?
The court may award maintenance in a legal separation under RSMo 452.335.1, and RSMo 452.130 lets an abandoned spouse petition for support and maintenance from a spouse who left without good cause.
What happens if a separated couple in Missouri reconciles?
Under RSMo 452.360.4, if both spouses move to set aside the judgment of legal separation, the court shall set it aside.
Updates
Independently fact-checked against the cited primary sources
The Law Behind This Article
This article rests on the statutory provisions below, held in our own legal record and retrieved from the official source. Tap a section to read the operative text.
Revised Statutes of Missouri, Title XXX (DOMESTIC RELATIONS), Chapter 452
§ 452.305Judgment of dissolution, grounds for — legal separation, when — pregnancy status not to prevent judgment — judgments to contain Social Security numbers.In forcecited in 4 of our articles
1. The court shall enter a judgment of dissolution of marriage if: (1) The court finds that one of the parties has been a resident of this state, or is a member of the armed services who has been stationed in this state, for ninety days immediately preceding the commencement of the proceeding and that thirty days have elapsed since the filing of the petition; and (2) The court finds that there remains no reasonable likelihood that the marriage can be preserved and that therefore the marriage is irretrievably broken; and (3) To the extent it has jurisdiction, the court has considered and made provision for child custody, the support of each child, the maintenance of either spouse and the disposition of property.
Official text (excerpt) · last checked 2026-09-05 · Read the full text in our law library · Verify at revisor.mo.gov
Cited in 22 court opinions in our collectionLatest citing opinion in our collection: 2021
Opinions citing this section in our collection:
- Simpson v. Strong (Missouri Court of Appeals 2007, 234 S.W.3d 567)“…of House Bill 315. 1973 Mo. Laws 470 . In pertinent part, § 452.305 RSMo Cum.Supp. (1975) originally stated:…”
- X.P.E.L., By His Next Friend, C.T., and C.T., Individually v. J.L.L. (Missouri Court of Appeals 2021)“…ines specific procedures and consequences for dissolution. Section 452.305, RSMo (2016) directs a circuit court to ente…”
- Crouch v. Crouch (Supreme Court of Missouri 1982, 641 S.W.2d 86)“…contest the validity of the dissolution of marriage itself. Section 452.305, RSMo 1978, provides that the court may enter…”
Identified automatically from the court opinions citing this section — not a ranking of which case controls.
Also relied on in: Missouri Divorce Laws (2026): Grounds, Residency, and Process, Missouri Pregnancy-Divorce Law Change Takes Effect August 28, 2026, Missouri Name Change Laws: How to Legally Change Your Name
§ 452.360Judgment of dissolution or legal separation final when entered — appeal, effect of — distribution of property final — conversion of judgment of legal separation to dissolution, when — notice, to whom.In force
1. A judgment of dissolution of marriage or of legal separation is final when entered, subject to the right of appeal. An appeal from a judgment of dissolution that does not challenge the finding that the marriage is irretrievably broken does not delay the finality of that provision of the judgment which dissolves the marriage beyond the time for appealing from that provision, so that either of the parties may remarry pending appeal. 2. The court's judgment of dissolution of marriage or legal separation as it affects distribution of marital property shall be a final judgment not subject to modification. 3. No earlier than ninety days after entry of a judgment of legal separation, on motion of either party, the court may convert the judgment of legal separation to a judgment of dissolution of marriage. 4. On motion of both parties, the court shall set aside a judgment of legal separation. 5. The circuit clerk shall give notice of the entry of a judgment of legal separation or dissolution to the department of social services.
Official text (excerpt) · last checked 2026-07-31 · Read the full text in our law library · Verify at revisor.mo.gov
§ 452.325Separation agreements authorized, effect of — orders for disposition of property, when — terms of agreement, how enforced.In forcecited in 2 of our articles
1. To promote the amicable settlement of disputes between the parties to a marriage attendant upon their separation or the dissolution of their marriage, the parties may enter into a written separation agreement containing provisions for the maintenance of either of them, the disposition of any property owned by either of them, and the custody, support and visitation of their children. 2. In a proceeding for dissolution of marriage or for legal separation, the terms of the separation agreement, except terms providing for the custody, support, and visitation of children, are binding upon the court unless it finds, after considering the economic circumstances of the parties and any other relevant evidence produced by the parties, on their own motion or on request of the court, that the separation agreement is unconscionable. 3. If the court finds the separation agreement unconscionable, the court may request the parties to submit a revised separation agreement or the court may make orders for the disposition of property, support, and maintenance in accordance with the provisions of sections 452.330, 452.335 and 452.340.
Official text (excerpt) · last checked 2026-07-31 · Read the full text in our law library · Verify at revisor.mo.gov
Cited in 56 court opinions in our collectionLatest citing opinion in our collection: 2025
Opinions citing this section in our collection:
- DeWitt v. American Family Mutual Insurance Co. (Supreme Court of Missouri 1984, 667 S.W.2d 700)“…der decreeing the transfer of title or proceed by contempt. Section 452.325, RSMo 1978. See R. Fowler & J. Krauskopf,…”
- Cates v. Cates (Supreme Court of Missouri 1991, 819 S.W.2d 731)“…be interpreted. Specifically relevant to this case, Section 452.325, RSMo 1986, authorizes separation agreements.…”
- Bryson v. Bryson (Missouri Court of Appeals 1981, 624 S.W.2d 92)“…tutory references are to RSMo 1978. 3 .Section 452.325, RSMo 1978 reads: “Separation agreem…”
Identified automatically from the court opinions citing this section — not a ranking of which case controls.
§ 452.130Spouse abandoned, court to adjudge maintenance — execution to enforce.In force
When a person, without good cause, shall abandon his or her spouse, and refuse or neglect to maintain and provide for him or her, the circuit court, on his or her petition for that purpose, shall order and adjudge such support and maintenance to be provided and paid by such person for the spouse and the spouse's children, or any of them, by that marriage, out of his property, and for such time as the nature of the case and the circumstances of the parties shall require, and compel the person to give security for such maintenance, and from time to time make such further orders touching the same as shall be just, and enforce such judgment by execution, sequestration of property, or by such other lawful means as are in accordance with the practice of the court; and as long as said maintenance is continued, the person shall not be charged with the spouse's debts, contracted after the judgment for such maintenance.
Official text (excerpt) · last checked 2026-07-31 · Read the full text in our law library · Verify at revisor.mo.gov
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Sources and References
- RSMo 452.305, Revisor of Statutes, State of Missouri(revisor.mo.gov).gov
- RSMo 452.360, Revisor of Statutes(revisor.mo.gov).gov
- RSMo 452.130, Revisor of Statutes(revisor.mo.gov).gov
- RSMo 452.300, Revisor of Statutes(revisor.mo.gov).gov
- RSMo 452.310, Revisor of Statutes(revisor.mo.gov).gov
- RSMo Chapter 452 (section list with 2026 effective dates), Revisor of Statutes(revisor.mo.gov).gov
- RSMo 452.330, Revisor of Statutes(revisor.mo.gov).gov
- RSMo 452.335, Revisor of Statutes(revisor.mo.gov).gov
- RSMo 452.325, Revisor of Statutes(revisor.mo.gov).gov
- RSMo 210.822, Revisor of Statutes(revisor.mo.gov).gov
- Missouri Courts case-type list (Legal Separation/Annulment/Separation Maintenance)(courts.mo.gov).gov