You file for divorce in Missouri by meeting the residency requirement and submitting a Petition for Dissolution of Marriage to your local circuit court. One spouse must have lived in the state for at least 90 days. You file in the county where you or your spouse lives, pay the filing deposit, and have the papers served. At least 30 days must pass after filing before a judge can enter a judgment.
Taking the first step is usually the hardest part. Most people who sit down to file for divorce in Missouri are doing it at a kitchen table late at night, worried about the paperwork and worried about what it means for their kids. Here is the whole sequence, in order, with the actual numbers.
How to file for divorce in Missouri in 7 steps
Here is the whole sequence before we get into the detail of each part.
- Confirm that one spouse has lived in Missouri for at least 90 days.
- Gather your personal information and your full financial picture.
- Prepare the required forms, which is the petition, two financial statements, and a parenting plan if you have minor children.
- File with the Circuit Clerk in your county and pay the deposit.
- Have your spouse served, or have your spouse sign a waiver of service.
- Wait out the 30 day period while your spouse files an Answer or does not.
- Finalize by settlement agreement or, if you cannot agree, by trial.
Are you eligible to file for divorce in Missouri?
Two things have to be true before you can file for divorce in Missouri.
The 90 day residency rule. Under Section 452.305 RSMo, one spouse must have been a Missouri resident for 90 days immediately before the case begins. If you recently moved to the St. Louis area, you wait until you hit that mark.
Grounds. Missouri is a no fault state, so you do not have to prove your spouse cheated or abandoned you. The standard is that the marriage is irretrievably broken, meaning there is no reasonable likelihood it can be saved. Worth knowing before you file for divorce in Missouri, though. If your spouse denies under oath that the marriage is irretrievably broken, Section 452.320 RSMo requires the court to look at the circumstances behind the filing and the prospect of reconciliation, and the case can be continued for 30 days to six months. Your spouse cannot stop the divorce, but a denial can slow it down.
One timely note. Beginning August 28, 2026, Missouri law provides that pregnancy does not prevent a court from entering a judgment of dissolution, which changes a longstanding practice in many Missouri courts of holding a case until after the birth.
What to gather before you file for divorce in Missouri
Organization is most of the work when you file for divorce in Missouri. Getting your information together early makes the filing itself straightforward.
Start with the basics for both spouses, meaning full legal names, current addresses, dates of birth, and Social Security numbers. If you have children, you need their names and birth dates too. The petition also has to state the residence of each party, including the county and how long each of you has lived there.
Then the financial side, because Missouri asks for real detail. List every asset and every debt, including bank accounts, retirement funds, real estate, vehicles, and loans. Pull your last two years of tax returns and your recent pay stubs. Those numbers feed the financial statements the court requires, and getting them right the first time is how you avoid coming back to fix things later.
The 4 forms Missouri courts require
These are the documents that make up a filing when you file for divorce in Missouri. Courts in St. Louis County and St. Charles County expect all of them to be complete and consistent with each other.
1. The Petition for Dissolution of Marriage
The document that opens your case. It identifies both spouses, states when you married, confirms the residency requirement, states that the marriage is irretrievably broken, and lists what you are asking the court to order on custody, support, and property.
2. The Statement of Property
A full inventory of what you own and what you owe, separated into marital and non marital property. This is the document the court works from when it divides things, so guessing here creates problems later.
3. The Statement of Income and Expenses
What you earn and what it costs you to live each month. It drives decisions about support and about who can afford to stay in the house.
4. The Parenting Plan, if you have minor children
Under Section 452.310 RSMo, each party has to file a proposed parenting plan within 30 days after service of process or the filing of an entry of appearance, whichever happens first. That is a real deadline, not a suggestion. The plan covers where the children live, the holiday schedule, how medical and school decisions get made, and how the two of you will handle a disagreement. When children are involved you will also complete a Form 14 child support calculation. Our guide to the divorce process in Missouri walks through how these pieces connect.
Where you file and what it costs
To file for divorce in Missouri you take the paperwork to the Circuit Clerk in the county where you or your spouse lives. In St. Louis County that is the Family Court division at the Justice Center in Clayton, and in St. Louis City it is the Civil Courts building downtown.
Expect a filing deposit. The 21st Judicial Circuit schedule of deposits and fees lists $148.50 for a dissolution of marriage as of its January 2026 revision. St. Charles County and St. Louis City set their own amounts, and every schedule changes, so confirm the current figure with the clerk before you go. If you cannot afford it, ask the clerk about filing a motion to proceed without paying costs. For a fuller picture of what a case costs beyond the filing deposit, see our breakdown of divorce cost in St. Louis.
The clerk assigns your case a number and a judge. That is the moment the clock actually starts.
How to serve the papers on your spouse
When you file for divorce in Missouri, filing is only half of starting the case. Your spouse has to receive formal legal notice, which is called service of process.
You cannot hand the papers to your spouse yourself. You have two normal routes. The sheriff in the county of service can deliver them, or you can hire a private process server, which is often faster and easier to schedule.
There is a third option when your spouse is cooperative. He or she can sign an Entry of Appearance and Waiver of Service, which confirms receipt and saves you the cost and the delay of formal service. This is common in cases where both people already agree the marriage is over.
The 30 day wait after you file for divorce in Missouri
Missouri builds in a cooling off period. Even when both spouses agree on everything, the court cannot enter a judgment until at least 30 days have passed since the petition was filed. Note that the clock runs from filing, not from service, which is a detail a lot of articles get wrong.
During that window your spouse can file an Answer, which is the formal response to your petition. Agreement on everything may mean nothing gets filed at all. Disagreement on custody, support, or property is where an Answer lays out the other side of the story.
What happens next, uncontested or contested
What happens after you file for divorce in Missouri depends entirely on whether the two of you agree.
An uncontested divorce is the shortest and least expensive path. It means you agree on property, debt, custody, and support, and the court is largely reviewing your agreement rather than deciding for you. These cases commonly resolve in a few months rather than a year.
A contested case is one where something cannot be worked out, whether that is a business, a retirement account, or where the children spend school nights. Those cases run longer and may involve mediation, a guardian ad litem, or a trial. If yours is heading that direction, our St. Charles high conflict divorce page covers what that looks like in practice.
Do you need a lawyer to file for divorce in Missouri?
No. You can file for divorce in Missouri on your own, and plenty of people do. Whether you should is a different question.
A divorce judgment makes permanent changes to your finances and to your relationship with your children, and fixing a bad one after the fact is harder and more expensive than getting it right the first time. It is worth at least one conversation with an attorney if your spouse already has one, if either of you owns a business, if there is meaningful retirement money in play, or if custody is genuinely in dispute.
We generally return calls within one business day, and we will tell you honestly whether your situation actually needs representation.
Finalizing your dissolution of marriage
The last step after you file for divorce in Missouri is either a short hearing or, in some uncontested cases, a judgment entered on written affidavits without anyone appearing. The judge reviews the settlement agreement and the parenting plan to confirm they comply with Missouri law and are not unconscionable.
Once the judge signs the Decree of Dissolution of Marriage, you are legally single, and the property division and custody orders in it are enforceable. You can check the local rules and procedures for your circuit through the Missouri Judiciary.
Common questions about how to file for divorce in Missouri
How do I file for divorce in Missouri?
Confirm the 90 day residency requirement, prepare the Petition for Dissolution of Marriage along with your financial statements and a parenting plan if you have minor children, file with the Circuit Clerk in your county, pay the deposit, and have your spouse served.
How much does it cost to file for divorce in Missouri?
St. Louis County lists a $148.50 deposit for a dissolution as of January 2026. Other counties set their own amounts, and service costs are separate. Fee waivers are available if you cannot afford the deposit.
How long does a divorce take in Missouri?
Thirty days after filing is the statutory minimum. Uncontested cases commonly take a few months. A contested case with custody or business assets in dispute can run a year or longer.
Can I file for divorce in Missouri without a lawyer?
Yes. Missouri allows you to represent yourself. The risk is that mistakes in the judgment are difficult and costly to correct later, particularly on retirement accounts and custody terms.
Do both spouses have to agree to the divorce?
No. Your spouse cannot prevent a dissolution. Denying under oath that the marriage is irretrievably broken can have the case continued for 30 days to six months while the court examines the circumstances and the prospect of reconciliation.
Do I have to move out before I file?
No. Missouri has no separation period requirement, and you are entitled to remain in the marital home while the case is pending.
Which county do I file in?
You file for divorce in Missouri in the county where you live or where your spouse lives. In the St. Louis area that usually means St. Louis County in Clayton, St. Louis City, or St. Charles County.
Talk with a St. Louis family law team
Knowing how to file for divorce in Missouri is about more than the forms. It is about starting the case in a way that does not create problems for you eighteen months from now.
We handle family law and nothing else, and we know the practices in St. Louis County, St. Louis City, and St. Charles County. We will explain your options in plain language and tell you where you stand before you commit to anything.
Family Law, Simplified. Fill out the form or call 314.918.0100 to set up a consultation.