Annulment vs. Divorce in Wyoming: Complete 2026 Legal Guide

Wyoming courts grant annulments only when a marriage is legally void or voidable under Wyo. Stat. § 20-2-101, while divorce dissolves a valid marriage through irreconcilable differences under Wyo. Stat. § 20-2-104. The filing fee for either proceeding ranges from $70 to $160 depending on county, and both require 60 days of Wyoming residency before filing. Annulment treats the marriage as though it never legally existed, while divorce acknowledges a valid marriage has ended. Wyoming granted approximately 2,800 divorces in 2023 but recorded fewer than 50 annulments statewide, reflecting the stringent proof requirements for annulment versus the straightforward no-fault divorce process.

Key Facts: Annulment vs. Divorce in Wyoming

What Is an Annulment Under Wyoming Law

Under Wyo. Stat. § 20-2-101, an annulment is a court decree declaring that a marriage was never legally valid from its inception. Wyoming recognizes two categories of invalid marriages: void marriages (automatically invalid regardless of court action) and voidable marriages (valid until a court declares them invalid). The petitioner must file a Complaint for Annulment in the district court of the county where either spouse has resided for at least 60 days and prove specific statutory grounds with clear evidence.

Annulment differs fundamentally from divorce in legal effect. When a Wyoming court grants an annulment, the marriage is treated as though it never occurred for most legal purposes. Divorce, by contrast, acknowledges that a valid marriage existed and has now ended. This distinction affects property rights, inheritance claims, and how the marriage appears on official records. Despite this fundamental difference, Wyoming courts apply the same equitable distribution principles to divide property in both annulment and divorce proceedings under Wyo. Stat. § 20-2-114.

Grounds for Annulment in Wyoming

Wyoming law provides seven specific grounds for annulment, divided between void marriages and voidable marriages. The distinction matters because void marriages are automatically invalid, while voidable marriages require court action to nullify.

Void Marriages (Automatically Invalid)

A void marriage under Wyo. Stat. § 20-2-101 is legally null from the moment of solemnization. Wyoming courts will declare the following marriages void:

• Bigamy: Either party had a living spouse at the time of marriage. The prior marriage must have been valid and undissolved. Wyoming prosecutes bigamy as a criminal offense carrying penalties of up to 5 years imprisonment under Wyo. Stat. § 6-4-401.

• Mental Incompetence: Either party lacked the mental capacity to understand the nature and consequences of marriage at the time of the ceremony. Medical evidence documenting the condition is typically required.

• Prohibited Family Relationships: The parties are related as parent-child, grandparent-grandchild, siblings (whole or half-blood), uncle-niece, aunt-nephew, or first cousins. This applies whether either party was born legitimate or illegitimate.

• Underage Marriage: Either party was under 16 years of age at the time of contracting the marriage.

Voidable Marriages (Valid Until Annulled)

Voidable marriages require court action to be declared invalid. Under Wyo. Stat. § 20-2-101, these grounds make a marriage voidable:

• Age 16-17 Without Proper Consent: Either party was 16 or 17 years old at the time of marriage without judicial consent, and the parties separated during the minor's nonage and did not cohabit after reaching age 18.

• Fraud: The consent of either party was obtained by material misrepresentation. Common examples include lies about pregnancy, identity, immigration status, or intent to have children. The defrauded party must not have voluntarily cohabited after discovering the fraud.

• Force or Duress: One party was coerced into marriage through threats, violence, or undue pressure. The coerced party must not have voluntarily cohabited after the force or duress ceased.

• Physical Incapacity: Either spouse had a physical condition preventing consummation that the other party did not know about before marriage. This action must be filed within 2 years of the marriage date and can only be brought by the injured party.

How Divorce Differs From Annulment in Wyoming

Wyoming divorce law under Wyo. Stat. § 20-2-104 provides a straightforward no-fault process requiring only proof of irreconcilable differences. The petitioner does not need to prove wrongdoing, specific grounds, or assign fault to either spouse. This fundamental difference makes divorce significantly more accessible than annulment for most couples.

Key Differences Between Annulment and Divorce

Divorce requires only that one spouse state under oath that irreconcilable differences exist and the marriage is irretrievably broken. Wyoming courts grant approximately 2,800 divorces annually, with uncontested cases typically finalizing within 30-60 days of filing. Annulment requires the petitioner to present specific evidence of void or voidable grounds, often necessitating witness testimony, medical records, or documentary proof.

Filing Requirements and Procedures

Both annulment and divorce in Wyoming require meeting the same residency threshold and following similar procedural steps, though the substantive proof differs significantly.

Residency Requirement

Under Wyo. Stat. § 20-2-107, no annulment or divorce shall be granted unless one of the parties has resided in Wyoming for 60 days immediately preceding the filing of the complaint. Alternatively, if the marriage was solemnized in Wyoming, one party must have resided in the state continuously from the marriage date through the filing date. This 60-day requirement is among the shortest residency periods in the United States.

Filing Fees and Court Costs

Wyoming district courts charge filing fees ranging from $70 to $160 depending on the county. Sheridan County and Natrona County charge $160, while other counties may charge between $70 and $120. Under Wyo. Stat. § 5-3-206(a)(i), the base civil filing fee is $120, though individual counties set final amounts.

As of March 2026, typical costs include:

• Filing fee: $70-$160
• Service of process (sheriff): Approximately $35
• Private process server: $50-$100
• Certified copies: $1 first page, $0.50 each additional page, plus $0.50 certification fee
• Parenting class (if children involved): $25-$75 per parent

Individuals who cannot afford filing fees may complete an Affidavit of Indigency and Request for Waiver of Filing Fees. The court reviews financial documentation to determine eligibility.

Mandatory Waiting Period

Under Wyo. Stat. § 20-2-108, no decree of annulment or divorce may be entered until at least 20 days have passed from the date the complaint was filed and served on the respondent. This 20-day period begins when service of process is completed, not simply from the filing date. Wyoming imposes no mandatory separation period before filing.

Filing Process Overview

1. Prepare the Complaint for Annulment or Complaint for Divorce, including full names, marriage date, children's names and birth dates if applicable, and requested relief
2. File with the district court clerk in the county where you or your spouse has resided for 60 days
3. Pay the filing fee or submit indigency waiver application
4. Serve the complaint on your spouse through sheriff, private process server, or certified mail
5. Wait for response (30 days if served in Wyoming, 45 days if served out of state)
6. Attend any required hearings (contested cases) or submit final paperwork (uncontested cases)
7. Receive final decree after the 20-day waiting period

Property Division in Annulment vs. Divorce

Wyoming applies the same equitable distribution principles to property division in both annulment and divorce proceedings. Under Wyo. Stat. § 20-2-114, courts make such disposition of property as appears just and equitable, considering the respective merits of the parties and their post-dissolution circumstances.

Wyoming's All-Property Approach

Wyoming uses an "all-property" or "kitchen sink" approach to property division. Courts may divide any property owned by either spouse, regardless of when or how it was acquired. This includes:

• Property acquired during the marriage
• Property owned before the marriage
• Inherited property
• Gifts received by either spouse
• Retirement accounts and pension benefits
• Business interests
• Real estate in or outside Wyoming

This approach applies equally to annulment and divorce. Even though annulment treats the marriage as never having existed, Wyoming courts still equitably divide accumulated property to prevent unjust enrichment.

Factors Courts Consider

Under Wyo. Stat. § 20-2-114 and established case law, Wyoming courts weigh multiple factors:

• Duration of the marriage
• Each spouse's economic circumstances and earning capacity
• Which spouse acquired the property and how
• Contributions to the other spouse's education or career
• Health and age of each spouse
• Custodial responsibilities for children
• Tax consequences of proposed division
• Any burdens imposed on property for either party's benefit

Equitable distribution does not always mean 50/50. Courts may award one spouse a greater percentage based on these factors. In short marriages ending by annulment, courts often attempt to restore parties to their pre-marriage financial positions when feasible.

Child Custody and Support Considerations

Children born during a void or voidable marriage remain legitimate under Wyoming law. Courts address custody, visitation, and child support in annulment proceedings using the same standards applied in divorce cases.

Custody Determination Standards

Under Wyo. Stat. § 20-2-201, Wyoming courts determine custody based on the best interests of the child, considering:

• Quality of each child's relationship with each parent
• Each parent's ability to provide adequate care
• Relative competency and fitness of each parent
• Geographic proximity of parents' residences
• Each parent's willingness to accept parenting responsibilities
• Any history of domestic violence or child abuse
• The child's reasonable preference (if sufficiently mature)

Custody Arrangements

Wyoming recognizes three physical custody arrangements:

• Primary Physical Custody: Children spend more than 75% of overnights with one parent
• Shared Physical Custody: Children spend between 25% and 75% of overnights with each parent (including 50/50 arrangements)
• Split Custody: Multiple children divided between parents (rare)

Child Support

Wyoming calculates child support using statutory guidelines under Wyo. Stat. § 20-2-304. The formula considers both parents' net incomes, number of children, and custody arrangement. Child support obligations apply equally whether the parents' marriage ends by annulment or divorce.

Home State Jurisdiction

For first-time custody determinations, Wyoming courts have jurisdiction only if Wyoming has been the child's home state for 6 consecutive months before filing. Emergency jurisdiction may apply in cases involving immediate threat to the child's safety.

Time Limits for Filing Annulment

Wyoming law imposes specific time limitations for certain annulment grounds, while other grounds have no statutory deadline.

Physical Incapacity: 2-Year Deadline

Under Wyo. Stat. § 20-2-101, an action to annul a marriage based on physical incapacity must be commenced within 2 years from the date of marriage solemnization. Only the injured party may bring this action, and it must be filed against the spouse whose incapacity is alleged. Filing after the 2-year deadline bars the claim entirely.

Fraud or Force: No Statutory Deadline, But Cohabitation Bars Claim

Annulment based on fraud or force has no specific time limit, but continued voluntary cohabitation after discovering the fraud or after the force ceases will bar the action. The petitioner must file before resuming marital relations once the defect is known or the duress ends.

Void Marriages: No Time Limit

Annulment actions based on bigamy, mental incompetence, prohibited relationships, or underage marriage (under 16) may be filed at any time. These marriages are void from inception and never become valid through passage of time.

Age 16-17: Must File During Nonage or Shortly After

For marriages where one party was 16 or 17 without judicial consent, the minor must have separated from the spouse during nonage and not resumed cohabitation after turning 18. The practical effect limits this ground to cases filed relatively soon after marriage.

Choosing Between Annulment and Divorce

Most Wyoming couples should pursue divorce rather than annulment because divorce requires only proof of irreconcilable differences, while annulment demands evidence of specific void or voidable grounds. However, certain circumstances favor annulment.

When Annulment May Be Appropriate

• Your spouse was already married to someone else when you married
• You were deceived about something fundamental (identity, pregnancy, intention to have children)
• You were forced or threatened into marriage
• Your spouse had an undisclosed physical condition preventing consummation (must file within 2 years)
• Religious beliefs require annulment for future remarriage
• You want official recognition that the marriage was never valid

When Divorce Is the Better Choice

• You cannot prove any of the seven annulment grounds
• More than 2 years have passed since marriage (if physical incapacity is the only ground)
• You voluntarily lived with your spouse after discovering fraud or after coercion ended
• You want the fastest, simplest process to end your marriage
• Your marriage was legally valid but simply did not work out

Practical Considerations

Annulment proceedings typically take 3-12 months for contested cases because of the evidentiary requirements. Uncontested divorces in Wyoming routinely finalize within 30-60 days. Unless you have strong grounds and evidence for annulment, divorce offers a faster, less expensive path forward.

Frequently Asked Questions

How long do I have to live in Wyoming before filing for annulment?

You must reside in Wyoming for at least 60 days immediately before filing your Complaint for Annulment under Wyo. Stat. § 20-2-107. Alternatively, if your marriage was performed in Wyoming, you must have lived in the state continuously from the marriage date through filing. Wyoming's 60-day requirement is among the shortest residency periods nationwide, compared to California's 6-month requirement.

What is the filing fee for annulment in Wyoming?

Wyoming district courts charge filing fees between $70 and $160 depending on the county. Sheridan and Natrona counties charge $160, while other counties may charge $70-$120. Additional costs include approximately $35 for sheriff service, $1-$1.50 for certified copies, and $25-$75 per parent for mandatory parenting classes if children are involved. Fee waivers are available for indigent petitioners. Verify current fees with your local clerk as of March 2026.

Can I get an annulment if my spouse lied to me before marriage?

Yes, fraud is a valid ground for annulment under Wyo. Stat. § 20-2-101, but the lie must be material to the marriage. Common examples include misrepresentation of pregnancy, identity, immigration status, or intent to have children. You must not have voluntarily lived with your spouse after discovering the fraud, or you lose the right to annulment. You will need evidence proving the misrepresentation and that it induced your consent to marriage.

How long does an annulment take in Wyoming?

Wyoming law requires a minimum 20-day waiting period from filing and service before any decree can be entered. Uncontested annulments where both parties agree may finalize in 30-60 days. Contested annulments requiring evidentiary hearings typically take 3-12 months, depending on complexity and court schedules. Gathering evidence to prove annulment grounds often extends the timeline compared to no-fault divorce.

What happens to our property if we get an annulment instead of divorce?

Wyoming courts divide property equitably in both annulment and divorce proceedings under Wyo. Stat. § 20-2-114. Despite annulment treating the marriage as never having existed, courts still divide accumulated property fairly. Wyoming's "all-property" approach means courts may divide any assets owned by either spouse, including property acquired before marriage, to achieve an equitable result.

Are children from an annulled marriage considered legitimate?

Yes, children born during a void or voidable marriage remain legitimate under Wyoming law. Courts address custody, visitation, and child support in annulment proceedings using identical best-interest standards applied in divorce cases. Child support is calculated using the same statutory guidelines regardless of whether the parents' marriage ends by annulment or divorce.

Can I get an annulment if my spouse cannot consummate the marriage?

Yes, physical incapacity preventing consummation is a valid ground for annulment, but strict limitations apply. Under Wyo. Stat. § 20-2-101, you must file within 2 years of the marriage date. Only the spouse who did not know of the incapacity before marriage (the "injured party") may file, and the action must be brought against the spouse with the alleged incapacity.

Is there a waiting period before remarrying after annulment in Wyoming?

No, Wyoming imposes no waiting period for remarriage after an annulment decree is entered. Once the court issues the decree of nullity, either party may remarry immediately. This differs from some states that require a waiting period of 30-90 days before remarriage. Your annulment decree serves as proof that you are legally free to marry.

What if my spouse was already married when we got married?

Bigamy makes your marriage void under Wyo. Stat. § 20-2-101. You may file for annulment at any time regardless of how long ago the marriage occurred. No statute of limitations applies to void marriages. Wyoming also prosecutes bigamy as a criminal offense under Wyo. Stat. § 6-4-401, carrying penalties of up to 5 years imprisonment, though criminal prosecution is separate from civil annulment proceedings.

Do I need a lawyer for an annulment in Wyoming?

While Wyoming permits self-representation in annulment proceedings, the evidentiary requirements make legal representation advisable. Unlike no-fault divorce requiring only proof of irreconcilable differences, annulment requires proving specific void or voidable grounds with documentary evidence or witness testimony. An experienced Wyoming family law attorney can assess whether you have viable grounds, gather necessary evidence, and navigate court procedures. Many attorneys offer initial consultations for $100-$250 or free case evaluations.