Missouri residents seeking to end their marriage face a critical choice between annulment and divorce, each with vastly different legal consequences. Under RSMo § 452.305, divorce (called dissolution of marriage) terminates a valid marriage as of the decree date, while annulment under RSMo § 451.020 declares the marriage legally void from its inception. Missouri courts granted approximately 23,000 dissolutions in 2024 compared to fewer than 500 annulments, reflecting the stringent proof requirements for annulment. Filing fees range from $130 to $250 depending on county, and Missouri imposes a mandatory 30-day waiting period after filing before any judgment can be entered.
Key Facts: Annulment vs. Divorce in Missouri
| Factor | Annulment | Divorce (Dissolution) |
|---|---|---|
| Filing Fee | $130-$250 (varies by county) | $130-$250 (varies by county) |
| Waiting Period | 30 days minimum | 30 days minimum |
| Residency Requirement | 90 days for either spouse | 90 days for either spouse |
| Legal Effect | Marriage declared void from start | Marriage ends on decree date |
| Grounds Required | Specific grounds (fraud, bigamy, etc.) | No-fault (irretrievable breakdown) |
| Spousal Maintenance | Not available | Available under RSMo 452.335 |
| Property Division | Limited to separate property | Equitable distribution applies |
| Time Limit to File | 4 years from discovering grounds (voidable) | No time limit |
Understanding Annulment in Missouri: When a Marriage Never Existed
Missouri annulment declares a marriage legally void from its beginning, treating the union as if it never occurred under state law. Under RSMo § 451.020, Missouri prohibits marriages between close relatives (parents and children, siblings, first cousins, aunts/nephews, uncles/nieces), parties where one spouse is already married, and individuals under age 15. These void marriages lack legal validity regardless of how long the parties lived together. Missouri courts apply a strong presumption favoring marriage validity, requiring petitioners to prove specific statutory grounds by clear and convincing evidence.
Missouri recognizes two categories of invalid marriages that qualify for annulment. Void marriages, including bigamous unions under RSMo § 451.030 and incestuous marriages, were never legally valid and can be challenged at any time by either party, heirs, or even third parties with standing. Voidable marriages, by contrast, are presumed valid until successfully challenged by an aggrieved party within applicable time limits. The distinction matters significantly because void marriages require no affirmative action to invalidate, while voidable marriages remain legally binding until a court enters an annulment decree.
The Six Grounds for Annulment in Missouri
Missouri law establishes six primary grounds justifying annulment, each requiring specific proof that the marriage lacked a fundamental element of validity. Understanding these grounds helps petitioners assess whether annulment vs divorce in Missouri represents the appropriate legal remedy for their situation.
Ground 1: Bigamy
RSMo § 451.030 renders bigamous marriages automatically void when either party has a living spouse from a prior undissolved marriage. Missouri courts require proof that the prior marriage existed and remained legally valid at the time of the second marriage ceremony. The innocent spouse need not prove knowledge of the prior marriage, as bigamy voids the marriage regardless of intent. Approximately 15% of Missouri annulments involve bigamy grounds, often discovered when parties attempt to file joint tax returns or claim spousal benefits.
Ground 2: Prohibited Relationships (Incest)
Marriages between parents and children (including grandparents and grandchildren), brothers and sisters (whole or half-blood), uncles and nieces, aunts and nephews, and first cousins are prohibited under RSMo § 451.020. These marriages are void ab initio, meaning they never had legal effect. Missouri courts will grant annulment regardless of how long the parties lived together or whether they have children. Any official who knowingly issues a license for such marriages commits a Class C misdemeanor.
Ground 3: Underage Marriage Without Consent
Missouri prohibits marriage when either party is under 15 years old, treating such unions as void. Marriages where either party is between 15 and 17 years old are voidable if proper parental or guardian consent was not obtained before the ceremony. However, if both parties continue cohabitating after reaching age 18, Missouri courts may find the marriage ratified, eliminating annulment as an option. The underage spouse or their guardian must generally file for annulment before or shortly after the minor reaches legal age.
Ground 4: Fraud or Misrepresentation
Missouri case law permits annulment when one spouse induced the marriage through material misrepresentation about facts essential to the marriage relationship. Courts have recognized fraud grounds including lies about ability to have children, concealment of serious criminal history, misrepresentation of immigration status, and false claims about prior marriages. The standard is extremely high: the fraud must go to the essence of the marriage contract, not merely collateral matters like financial status or personal history. Petitioners must prove they relied on the misrepresentation and would not have married had they known the truth.
Ground 5: Duress, Threats, or Coercion
Marriages procured through duress, threats, or violence are voidable in Missouri. Courts examine whether the aggrieved party entered the marriage under circumstances that overcame their free will. Physical threats, blackmail, and family pressure rising to the level of coercion may support annulment. However, the petitioner must demonstrate they did not freely continue the marriage relationship after the coercive circumstances ended. Continued cohabitation after escaping the duress typically defeats annulment claims.
Ground 6: Mental Incapacity or Intoxication
Missouri recognizes annulment when one party lacked mental capacity to consent to marriage at the time of the ceremony. Grounds include insanity, severe intoxication, unconsciousness, or mental disability preventing understanding of the marriage contract. Temporary intoxication at the wedding ceremony may suffice if the party was so impaired they could not comprehend the nature of the marriage commitment. However, continued cohabitation after regaining capacity typically ratifies the marriage under Missouri law.
Missouri Divorce: The Standard Path to Ending a Marriage
Missouri divorce, officially termed dissolution of marriage under RSMo § 452.305, terminates a legally valid marriage as of the date the court enters its final decree. Unlike annulment, divorce does not question whether the marriage was valid, only that it has irretrievably broken down. Missouri adopted no-fault divorce in 1974, eliminating the requirement that either spouse prove wrongdoing like adultery or cruelty. Today, the petitioning spouse need only allege that the marriage is irretrievably broken with no reasonable likelihood of preservation.
Missouri requires a 90-day residency period for at least one spouse (or active-duty military stationed in Missouri) before filing for dissolution. After filing, a mandatory 30-day waiting period must elapse before the court can enter any judgment. These requirements apply equally to contested and uncontested divorces. Filing fees range from $130 to $250 depending on the county, with Jackson County charging $177.50 and Jasper County charging $127.50 as of January 2026.
Property Division: A Critical Difference Between Annulment and Divorce
Property division represents one of the most significant practical differences when comparing annulment vs divorce in Missouri. Divorce triggers Missouri's equitable distribution framework under RSMo § 452.330, requiring courts to divide marital property fairly based on multiple statutory factors. Annulment, by contrast, theoretically returns both parties to their pre-marriage financial positions since no valid marriage existed.
Under equitable distribution, Missouri courts consider each spouse's economic circumstances, contributions to acquiring marital property (including homemaking and child-rearing), the value of each spouse's separate property, and the parties' conduct during the marriage. Property acquired during the marriage is presumed marital regardless of whose name appears on the title. Missouri courts divide debts incurred during marriage using the same equitable principles.
When a marriage is annulled, standard marital property division rules technically do not apply because no valid marriage ever existed. However, Missouri courts retain discretion to divide property equitably to prevent unjust enrichment, particularly in longer-term relationships producing children or significant commingled assets. Courts may apply quasi-contractual principles like unjust enrichment, constructive trust, or partition to allocate property following annulment.
Spousal Maintenance: Available in Divorce Only
Missouri law does not authorize spousal maintenance (alimony) awards in annulment proceedings because maintenance presumes a valid marriage existed. Under RSMo § 452.335, divorce courts may award maintenance to a spouse who lacks sufficient property to provide for reasonable needs and is unable to support themselves through appropriate employment. Missouri courts consider factors including the duration of the marriage, each spouse's earning capacity, and the standard of living established during the marriage.
This distinction creates significant financial consequences when choosing between annulment and divorce. A spouse who would qualify for substantial maintenance in divorce may receive nothing in annulment proceedings. However, Missouri courts may award attorney fees in annulment cases and may provide temporary support during the annulment proceedings themselves. The financially dependent spouse should carefully consider whether annulment's immediate benefits outweigh the loss of potential maintenance rights.
Children of Annulled Marriages: Legitimacy Protected
Missouri law expressly protects children born during annulled marriages or within 300 days after the annulment decree. These children are considered legitimate children of both parents, entitled to the same inheritance rights, parental support, and custody protections as children of valid marriages. Parents may be ordered to pay child support, and courts establish custody arrangements following the same best-interests standards applied in divorce cases.
This protection eliminates one historical concern about annulment: the fear that children would be rendered illegitimate. Missouri courts routinely address custody, visitation, and child support in annulment proceedings when minor children exist. The children's legal status remains unaffected by the determination that their parents' marriage was invalid.
Time Limits for Filing: Annulment vs. Divorce
Missouri imposes no deadline for filing divorce; spouses may dissolve their marriage at any time regardless of how long they have been married or separated. Annulment, however, involves timing considerations that differ based on whether the marriage is void or voidable.
Void marriages (bigamy, incest, underage below 15) remain invalid forever and can theoretically be challenged at any time. However, practical considerations encourage prompt action, as property becomes more commingled and evidence harder to obtain over time. Missouri courts generally allow void marriage challenges even after one party dies, though standing requirements limit who may bring such challenges.
Voidable marriages (fraud, duress, mental incapacity, underage with consent issues) must generally be challenged within four years of discovering the grounds for annulment. Additionally, continued cohabitation after discovering the defect or after the coercive circumstances end may ratify the marriage, eliminating annulment as an option. Courts expect petitioners to act promptly once they learn of grounds supporting annulment.
The Annulment Process in Missouri: Step-by-Step
Filing for annulment in Missouri follows procedures similar to divorce, with the critical addition of proving specific statutory grounds. The petitioner files in the circuit court of the county where either spouse resides, paying filing fees of $130 to $250 depending on the county. The petition must allege specific grounds for annulment under Missouri law and request the court declare the marriage void or voidable.
The respondent spouse must be served with the petition through personal service (sheriff or private process server) or, if they cannot be located, through service by publication. Service costs typically range from $25 to $100 depending on the method used. After service, the respondent has 30 days to file an answer. If no answer is filed, the court may enter a default judgment.
Missouri requires the 30-day waiting period from filing before entering any judgment. The petitioner must prove annulment grounds by clear and convincing evidence, a higher standard than the preponderance standard used in divorce. Courts may require testimony, documentary evidence, and witness corroboration depending on the grounds alleged. If grounds are not proven, the court will deny the annulment petition, though the petitioner may then seek divorce instead.
When to Choose Divorce Over Annulment in Missouri
Despite annulment's appeal as a way to erase a marriage, divorce remains the appropriate choice for most Missouri couples ending their marriage. Divorce should be chosen when no specific annulment grounds exist (the overwhelming majority of cases), when spousal maintenance may be needed, when equitable property division is preferred, or when the marriage lasted long enough to make retroactive invalidity impractical.
Missouri's no-fault divorce framework makes dissolution straightforward regardless of who caused the marriage breakdown. The petitioner need only allege irretrievable breakdown, and if the respondent denies this allegation, the court must find the marriage broken based on evidence presented. Most uncontested Missouri divorces finalize within 60 to 90 days after filing.
When Annulment Makes Sense in Missouri
Annulment represents the better choice when clear statutory grounds exist and the petitioner's goals align with annulment's legal consequences. Annulment may be preferable when religious considerations make divorce unacceptable, when the petitioner wants no ongoing financial ties to the other party, when the marriage was extremely short (weeks or months), or when fraud or deception was so severe that the marriage should never have existed.
Potential annulment petitioners should honestly assess whether they can prove grounds by clear and convincing evidence. Missouri courts deny annulment petitions more frequently than divorce petitions due to the higher burden of proof. Consulting with a Missouri family law attorney before filing helps ensure the chosen remedy matches the client's circumstances and goals.
Filing Fees and Costs Comparison
Missouri circuit courts charge similar filing fees for both annulment and divorce petitions, typically ranging from $130 to $250 depending on the county. Additional costs include certified copy fees ($5 to $15 each), service of process fees ($25 to $100), and potential motion filing fees. Both proceedings may involve attorney fees ranging from $200 to $500 per hour for contested matters.
Uncontested annulments and divorces cost significantly less than contested proceedings. An uncontested divorce with agreement on all issues typically costs $2,000 to $4,500 total including filing fees and attorney costs. Contested cases requiring trial may cost $10,000 to $50,000 or more depending on complexity and duration.
Missouri courts offer fee waivers for low-income filers through Form CC 375 (Application to Proceed Without Payment). Courts typically grant waivers when household income falls below 125% of the federal poverty line. This option applies equally to annulment and divorce filings.
Frequently Asked Questions About Annulment vs. Divorce in Missouri
How long do you have to be married to get an annulment in Missouri?
Missouri imposes no minimum or maximum marriage duration for annulment eligibility. The determining factor is whether valid grounds for annulment exist under RSMo § 451.020, not how long the marriage lasted. A 20-year marriage can be annulled if bigamy or fraud is proven, while a 24-hour marriage cannot be annulled without proving specific statutory grounds. The common belief that very short marriages automatically qualify for annulment is incorrect under Missouri law.
Can you get an annulment in Missouri if you were drunk at the wedding?
Missouri permits annulment based on intoxication only if the person was so severely impaired they could not understand the nature of the marriage ceremony. Moderate intoxication that left the party aware they were getting married typically does not qualify. Additionally, continuing to live as a married couple after sobering up ratifies the marriage, eliminating annulment as an option. Courts examine the level of impairment and post-ceremony conduct when deciding these cases.
Does Missouri recognize common law marriage?
Missouri does not recognize common law marriages created within the state as of 2026. Couples cannot establish a valid marriage simply by living together, regardless of duration. However, Missouri will recognize common law marriages validly created in other states under the Full Faith and Credit Clause. This distinction matters for annulment because attempting to annul a non-existent common law marriage is unnecessary.
What happens to property in a Missouri annulment?
Because annulment declares no valid marriage existed, standard marital property division under RSMo § 452.330 technically does not apply. Each party generally retains their separate property. However, Missouri courts may apply equitable principles to prevent unjust enrichment, particularly when property was commingled during the relationship or when one party contributed significantly to assets titled in the other's name.
Can I get spousal support (alimony) after an annulment in Missouri?
Missouri does not award spousal maintenance following annulment because maintenance requires a valid marriage to have existed. This represents a significant disadvantage of annulment compared to divorce for financially dependent spouses. Courts may award temporary support during annulment proceedings and may allocate attorney fees, but no ongoing maintenance is available post-annulment.
How do I prove fraud for a Missouri annulment?
Proving fraud requires demonstrating that your spouse made a material misrepresentation about a fact essential to the marriage relationship, that you relied on that misrepresentation in deciding to marry, and that you would not have married had you known the truth. Common examples include lying about ability to have children, concealing a serious criminal history, or misrepresenting immigration status. General lies about finances or personal history typically do not meet Missouri's strict fraud standard.
What is the waiting period for divorce vs. annulment in Missouri?
Both divorce and annulment require a 30-day waiting period after filing before the court can enter a final judgment under RSMo § 452.305. Additionally, at least one spouse must have resided in Missouri for 90 days before filing. The waiting period runs concurrently with the residency period for those who already meet the residency requirement when filing.
Are children from an annulled marriage legitimate in Missouri?
Yes. Missouri law expressly protects children born during an annulled marriage or within 300 days after the annulment decree. These children have full legitimacy, inheritance rights, and entitlement to parental support identical to children of valid marriages. Courts address custody, visitation, and child support in annulment proceedings just as they would in divorce.
Can my spouse contest an annulment in Missouri?
Yes. The respondent spouse may dispute annulment grounds, arguing the marriage was valid and should require divorce to terminate. If the court finds insufficient evidence supporting annulment, it will deny the petition. The petitioner may then file for divorce instead. Contested annulments typically proceed to evidentiary hearings where both parties present testimony and evidence.
Should I hire an attorney for an annulment in Missouri?
Given the higher burden of proof required for annulment compared to divorce, consulting with a Missouri family law attorney is strongly recommended. Attorney fees typically range from $200 to $500 per hour. Many attorneys offer initial consultations for $100 to $300 to assess whether annulment grounds exist and discuss strategic options. Self-representation is possible but increases the risk of procedural errors or failure to prove grounds adequately.