To file for divorce (called "dissolution of marriage") in Missouri, you or your spouse must have lived in the state — or been a servicemember stationed there — for at least 90 days before you file, and the court cannot sign off on your divorce until at least 30 days have passed since you filed your petition. Missouri is a no-fault state, so you generally only need to tell the court the marriage is "irretrievably broken." Below is what the Missouri statutes say about residency, grounds, timing, property division, and a few situations — like pregnancy and military service — that can affect your case.
Missouri's residency requirement
Before a Missouri court can hear your dissolution case, at least one spouse must have been a resident of Missouri — or a member of the armed services stationed in Missouri — for the 90 days immediately before you file the petition (RSMo § 452.305.1(1)). If neither spouse meets this, the case generally is not ready to be filed in Missouri yet.
Grounds: Missouri is a no-fault state
You do not need to prove your spouse did something wrong. Under Missouri law, the court grants a dissolution of marriage when it finds the marriage is "irretrievably broken," meaning there is no reasonable likelihood the marriage can be preserved (RSMo § 452.305.1(2)).
If your spouse disagrees the marriage is over
If your spouse denies the marriage is irretrievably broken, the law does not simply take your word for it. You (the person who filed) must then prove one of five specific things:
Your spouse committed adultery, and it is intolerable for you to continue living with them.
Your spouse has behaved in a way that makes it unreasonable for you to continue living with them.
Your spouse has abandoned you for at least six months.
You and your spouse have lived separate and apart, by mutual consent, for 12 continuous months.
You and your spouse have lived separate and apart for at least 24 continuous months (no mutual consent needed at that point).
The court also has the option, in a contested case, to continue (delay) the case for anywhere from 30 days up to six months and suggest counseling before deciding (RSMo § 452.320.2).
The 30-day waiting period
Even if both spouses agree on everything, Missouri law does not let a court enter a final judgment of dissolution until at least 30 days have elapsed since the petition was filed (RSMo § 452.305.1(1)). Treat this as a floor, not a promise — how much longer your case actually takes depends on your local court's calendar, whether issues like custody or property are contested, and how quickly paperwork is completed. Check with your Missouri circuit court clerk for your case's actual timeline.
Time-sensitive: new pregnancy-and-divorce law (effective Aug. 28, 2026)
This is a recent change and the effective date matters. Missouri Gov. Mike Kehoe signed a bill clarifying that pregnancy status does not prevent a court from entering a judgment of dissolution — changing the prior practice of Missouri courts waiting until after the baby's birth to finalize a divorce (2026 Mo. Laws, pregnancy-and-dissolution amendment). This law takes effect August 28, 2026. If you are pregnant and considering or already going through a divorce in Missouri, ask your court or an attorney how this effective date applies to the timing of your specific case, since cases filed or decided close to that date may be handled differently.
Dividing property and debts
Missouri does not require an automatic 50/50 split. Instead, the law directs the court to first set apart each spouse's separate (nonmarital) property, and then divide the marital property and marital debts in whatever proportions the court considers "just" after weighing all relevant factors in the case (RSMo § 452.330.1). In practice this means the split could be even, or it could favor one spouse, depending on the circumstances — there is no fixed percentage set by statute for you to count on.
If a spouse is in the military
Two federal protections can matter alongside Missouri's own rules:
Delays for deployed or active-duty spouses: Under the Servicemembers Civil Relief Act, a servicemember whose military duties materially affect their ability to appear in court — including in a divorce, custody, or support case — can obtain a stay of at least 90 days, protecting against default judgments while they are unable to participate (50 U.S.C. § 3932, govinfo.gov).
Military retirement pay: Federal law (the Uniformed Services Former Spouses' Protection Act) allows a state court to treat a servicemember's disposable military retired pay as marital property that can be divided in a divorce, but it does not guarantee any fixed share — that is still decided under Missouri's equitable-distribution rules above. Direct payment of a share to a former spouse through the Defense Finance and Accounting Service is only available when the marriage lasted 10 or more years overlapping 10 or more years of the military member's service (the "10/10 rule") (10 U.S.C. § 1408, govinfo.gov).
What you can do in Missouri
Confirm residency. Make sure you or your spouse meet Missouri's 90-day residency (or military-stationed) requirement before filing.
File your petition for dissolution with the circuit court in the appropriate Missouri county, and note the filing date — the 30-day minimum waiting period runs from that date.
Decide how you'll address the "irretrievably broken" finding. If you expect your spouse to contest it, be ready to document one of the five specific grounds listed above.
Gather records on property and debts (separate vs. marital) so the court — or you and your spouse in a settlement — has what's needed to divide things fairly under Missouri's case-by-case standard.
If military service is involved, flag it early: a stay under the SCRA can pause the case, and the length of the marriage relative to service time affects how retirement pay can be paid out.
If you are pregnant, ask the court clerk how the new law effective August 28, 2026, applies to your case's timing.
Confirm every deadline and local procedure with your Missouri circuit court clerk, since day-to-day filing requirements and scheduling can vary by county.
This article is general information about Missouri law, not legal advice for your situation — talk with a licensed Missouri attorney or your local court clerk about your specific case.
Frequently asked questions
How long do you have to live in Missouri before you can file for divorce?
At least one spouse must have been a resident of Missouri, or a servicemember stationed in Missouri, for the 90 days immediately before the petition is filed (RSMo § 452.305.1(1)).
Does Missouri require proof of fault to get a divorce?
No. Missouri is a no-fault state — the court can grant a dissolution simply by finding the marriage is irretrievably broken (RSMo § 452.305.1(2)). If a spouse disputes that, the filer must prove one of five specific grounds under RSMo § 452.320.2.
How fast can a Missouri divorce be finalized?
Not before 30 days have passed since the petition was filed — that's a statutory minimum, not a guarantee (RSMo § 452.305.1(1)). Actual timing depends on your local court and whether the case is contested.
Does Missouri split marital property 50/50?
No. Missouri courts divide marital property and debts in whatever proportion they consider just after weighing all relevant factors — there's no fixed 50/50 rule in the statute (RSMo § 452.330.1).
Can a Missouri court finalize a divorce while a spouse is pregnant?
Starting August 28, 2026, a new Missouri law says pregnancy status does not prevent a court from entering a judgment of dissolution, changing the prior practice of waiting until after birth. Ask your court how the effective date applies to your case.
This article is general legal information, not legal advice, and may not reflect the most current law or the law in your jurisdiction. Laws vary by state and change over time. For advice about your specific situation, consult a licensed attorney.
Knowing your rights is the first step
Join thousands committing to calmly and consistently exercise their constitutional rights.
