Washington residents seeking to end a marriage must choose between two distinct legal paths: divorce (dissolution) or annulment (declaration of invalidity). Under RCW 26.09.040, an annulment treats the marriage as though it never legally existed, while divorce ends a valid marriage. The filing fee ranges from $314 to $364 depending on county, and annulments have no mandatory waiting period compared to the 90-day cooling-off requirement for divorce under RCW 26.09.030. Washington grants approximately 25,000 divorces annually but fewer than 500 annulments, reflecting the strict burden of proof required for declarations of invalidity.
Key Facts: Washington Annulment vs. Divorce
| Factor | Annulment | Divorce |
|---|---|---|
| Filing Fee | $314-$364 | $314-$364 |
| Waiting Period | None | 90 days mandatory |
| Residency Requirement | One spouse WA resident or military stationed | One spouse WA resident or military stationed |
| Grounds Required | Yes (fraud, duress, incapacity, bigamy, underage) | No (irretrievably broken) |
| Property Division | Just and equitable under RCW 26.09.080 | Just and equitable under RCW 26.09.080 |
| Burden of Proof | Petitioner must prove grounds | No proof required |
| Marriage Status After | Never legally existed | Legally ended |
| Children's Legitimacy | Children remain legitimate | Children remain legitimate |
What Is an Annulment in Washington State?
An annulment in Washington is legally called a Declaration of Invalidity under RCW 26.09.040, and it establishes that a marriage was never valid from its inception due to specific legal defects present at the time of the ceremony. Unlike divorce, which acknowledges a valid marriage existed and then ended, an annulment retroactively declares the marriage void as if the wedding never occurred. Washington courts grant fewer than 500 annulments annually compared to approximately 25,000 divorces, because the petitioner must prove specific statutory grounds rather than simply asserting the marriage is irretrievably broken.
Washington law distinguishes between void marriages and voidable marriages. A void marriage is automatically invalid under law and includes bigamy (one spouse already legally married to another person) and incestuous unions (marriage between close relatives prohibited under RCW 26.04.020). A voidable marriage appears valid on its face but can be invalidated through court action if specific conditions existed at the time of the wedding. Most Washington annulments involve voidable marriages based on fraud, duress, mental incapacity, or underage parties.
The practical effect of an annulment versus divorce matters significantly for some petitioners. Religious considerations often motivate annulment requests, as certain faiths do not recognize divorce but will accept annulled marriages. Immigration status may also be affected differently by annulment versus divorce. However, for property division, spousal support, and child custody purposes, Washington courts apply the same statutory framework regardless of whether the case proceeds as annulment or divorce.
Legal Grounds for Annulment Under Washington Law
Washington recognizes five specific grounds for annulment under RCW 26.04.130 and RCW 26.09.040, and the petitioner must prove at least one ground by a preponderance of evidence to obtain a declaration of invalidity. Washington courts strictly interpret these grounds, denying annulments when petitioners cannot meet their evidentiary burden. Understanding each ground helps potential petitioners assess whether annulment is a viable option for their circumstances.
Fraud or Misrepresentation
Fraud sufficient for annulment must involve a fundamental aspect of the marriage relationship, such as lies about identity, criminal history, ability to have children, or intent to consummate the marriage. Under RCW 26.04.130, the fraud must have directly induced the innocent party to enter the marriage, and the petitioner must not have continued living as married after discovering the fraud. Courts have denied annulments where the fraud concerned financial matters or personality traits rather than fundamental marital elements. The three-year statute of limitations for fraud under RCW 4.16.080 begins when the innocent spouse discovers the fraudulent conduct.
Duress or Force
A marriage is voidable when consent was obtained through threats, coercion, or undue pressure under RCW 26.04.130. The duress must be sufficient to overcome the free will of a reasonable person in similar circumstances. Examples include threats of physical harm, threats to family members, or extreme emotional manipulation. The petitioner must file for annulment within a reasonable time after the duress ceases, and continuing to live voluntarily with the spouse after the threat ends may constitute ratification of the marriage, barring annulment.
Mental Incapacity
If either spouse lacked sufficient mental capacity to understand the nature and consequences of marriage at the time of the ceremony, the marriage is voidable under RCW 26.04.130. Mental incapacity includes temporary conditions such as severe intoxication, drug impairment, or acute mental illness, as well as permanent conditions like intellectual disability or dementia. The incapacity must have existed at the exact time of the wedding ceremony. If the incapacitated spouse later regains capacity and continues living as married, courts may find the marriage was ratified.
Underage Marriage
Effective June 6, 2024, Washington requires both parties to be at least 18 years old to marry, with no exceptions under HB 1455. Previously, 17-year-olds could marry with parental consent, and younger minors could marry with superior court approval. Between 2000 and 2021, over 5,048 minors were married in Washington, with 83% being girls wed to adult men. Any marriage involving a minor under 18 entered after June 2024 is voidable, and anyone knowingly issuing a marriage license to a minor faces Class C felony charges and fines up to $1,000.
Bigamy
A marriage is invalid if either party was already legally married to another living person at the time of the ceremony. Under Washington law, the subsequent marriage is voidable rather than automatically void, meaning a court order is still required to formally invalidate the union. Either spouse, the legal spouse from the prior marriage, or a child of the later marriage may petition for a declaration of invalidity based on bigamy. There is no time limit for seeking annulment based on bigamy, as it constitutes a continuing legal defect.
Comparison: Annulment vs. Divorce Requirements in Washington
| Requirement | Annulment (Declaration of Invalidity) | Divorce (Dissolution) |
|---|---|---|
| Legal Basis | Marriage never valid due to defect at ceremony | Marriage valid but now irretrievably broken |
| Grounds Needed | Must prove fraud, duress, incapacity, underage, or bigamy | No grounds required (no-fault state) |
| Burden of Proof | Petitioner must prove grounds | Simply state marriage is irretrievably broken |
| Waiting Period | No mandatory waiting period | 90 days under RCW 26.09.030 |
| Residency | One spouse WA resident or military stationed | One spouse WA resident or military stationed |
| Property Division | Same rules apply (RCW 26.09.080) | Just and equitable division |
| Spousal Support | May be awarded in either | May be awarded |
| Child Custody | Children remain legitimate; custody determined | Custody and parenting plan required |
| Timeline | 3-6 months if uncontested | 3-4 months minimum; 12-18 months contested |
| Success Rate | Lower (strict requirements) | Higher (no-fault system) |
How to File for Annulment in Washington
Filing for annulment in Washington requires submitting specific forms to the superior court in the county where either spouse resides, paying a filing fee of $314 to $364, and proving statutory grounds for invalidity. The process differs from divorce primarily in the evidentiary requirements and the absence of a mandatory waiting period. Petitioners should gather documentation supporting their claimed grounds before filing, as courts require substantial proof rather than mere allegations.
Step 1: Verify Eligibility
Confirm that at least one spouse is a Washington resident or a member of the armed forces stationed in Washington under RCW 26.09.040. Both spouses must be living at the time of filing. Assess whether you can prove one of the five statutory grounds for annulment. If grounds are uncertain or difficult to prove, divorce may be the more practical option.
Step 2: Gather Evidence
Collect documentation supporting your grounds for annulment. For fraud cases, this may include written communications, medical records showing inability to have children, criminal background checks, or witness statements. For mental incapacity, medical records from the time of the wedding and expert testimony may be necessary. For duress, police reports, protective orders, or witness statements can support your claim. The burden of proof rests entirely on the petitioner.
Step 3: File the Petition
Complete and file the Petition for Declaration of Invalidity with the superior court clerk in your county. The filing fee ranges from $314 in King County to $364 in Clark County as of January 2026. If you cannot afford the fee, complete a Fee Waiver Request form and submit income documentation. Courts waive fees for households earning at or below 125% of federal poverty guidelines ($19,406 for one person, $39,750 for a family of four in 2026).
Step 4: Serve Your Spouse
Arrange for proper service of the petition on your spouse. Professional process servers typically charge $50 to $100 in Washington. Your spouse has 20 days to respond if served within Washington, or 60 days if served outside the state. If your spouse cannot be located after diligent search, you may request service by publication.
Step 5: Attend the Hearing
Present your evidence and testimony at the court hearing. Unlike divorce, where the court accepts an assertion that the marriage is irretrievably broken, annulment requires the petitioner to prove the specific grounds alleged. The respondent may contest the annulment by disputing the claimed grounds. If the court finds insufficient evidence, it will deny the annulment, and you would need to file for divorce instead.
Washington Divorce Process: How It Differs
Washington divorce (dissolution of marriage) operates under a no-fault system where neither spouse must prove wrongdoing to end the marriage. Under RCW 26.09.030, either spouse can obtain a divorce by stating the marriage is irretrievably broken. The mandatory 90-day waiting period begins when the petition is filed and served, meaning the fastest possible divorce takes approximately 3-4 months. Contested divorces involving custody disputes, business valuations, or complex property issues typically require 12-18 months, with high-conflict cases extending to 24 months or longer.
The no-fault nature of Washington divorce law means courts do not consider marital misconduct such as adultery, abandonment, or cruelty when granting the divorce or dividing property under RCW 26.09.080. However, misconduct involving waste of marital assets may be considered in property division calculations. Washington applies community property principles with equitable discretion, meaning the court divides all property (both community and separate) in a manner that appears just and equitable after considering the nature and extent of property, marriage duration, and each spouse's economic circumstances.
Property Division in Annulment vs. Divorce
Washington applies identical property division rules to both annulment and divorce under RCW 26.09.080, contrary to common misconceptions that annulled marriages preclude property division. The court divides all assets and liabilities, whether community or separate, in a just and equitable manner without regard to marital misconduct. This means even in annulment cases, courts will address real estate, retirement accounts, bank accounts, debts, and other financial matters.
Washington is one of nine community property states, but the just and equitable standard does not require a 50/50 split. Courts consider four statutory factors: the nature and extent of community property, the nature and extent of separate property, the duration of the marriage or domestic partnership, and the economic circumstances of each spouse at the time of division. In short marriages that are annulled, the limited duration may result in each spouse retaining most of their separate property with minimal community property to divide.
Child Custody and Support in Both Proceedings
Children born or conceived during an annulled marriage remain legitimate under RCW 26.09.040, and courts must establish custody arrangements and child support regardless of whether the parents' marriage is dissolved through annulment or divorce. The same parenting plan requirements, child support calculation guidelines, and best interests of the child standards apply in both proceedings. Washington uses an income shares model for child support, considering both parents' incomes, healthcare costs, daycare expenses, and the parenting time schedule.
The court will establish a parenting plan addressing residential time, decision-making authority for education, healthcare, and religious upbringing, and dispute resolution procedures. Neither annulment nor divorce provides an advantage in custody determinations. Courts focus exclusively on the children's best interests, considering factors such as each parent's relationship with the children, the children's adjustment to home and community, and any history of domestic violence or substance abuse.
Frequently Asked Questions
How long do I have to file for annulment in Washington?
Washington does not impose a strict statute of limitations for annulment, but courts expect petitioners to act within a reasonable time after discovering grounds for invalidity. For fraud cases, the three-year limitations period under RCW 4.16.080 begins upon discovery of the fraud. Continuing to live as married after learning of grounds may constitute ratification, barring annulment. File promptly once grounds are discovered.
Can I get an annulment if my spouse cheated on me?
No, adultery is not grounds for annulment in Washington. Annulment requires proving a defect that existed at the time of marriage, such as fraud, duress, or incapacity under RCW 26.04.130. Post-marriage conduct like infidelity does not make a marriage invalid from inception. You would need to file for divorce, which Washington grants without requiring proof of fault or misconduct.
What is the filing fee for annulment in Washington?
The filing fee for annulment ranges from $314 to $364 depending on your county as of January 2026. King County charges $314, while Clark County charges $364. Fee waivers are available for households earning at or below 125% of federal poverty guidelines ($19,406 for individuals, $39,750 for a family of four). Verify current fees with your local superior court clerk before filing.
Do I need a lawyer for annulment in Washington?
While not legally required, an attorney is strongly recommended for annulment cases due to the burden of proof requirements. Unlike no-fault divorce where you simply state the marriage is irretrievably broken, annulment requires proving specific grounds with evidence. Attorneys typically charge $250-$450 per hour in Washington. Legal aid organizations may assist low-income petitioners. Self-representation success rates are lower for annulment than divorce.
What happens to property if a marriage is annulled?
Washington courts divide property in annulment cases using the same just and equitable standard applied in divorces under RCW 26.09.080. The court considers all property (community and separate), marriage duration, and each spouse's economic circumstances. Despite the legal fiction that the marriage never existed, courts still address real estate, retirement accounts, debts, and financial matters to achieve equitable outcomes.
Is there a waiting period for annulment in Washington?
No, Washington does not impose a mandatory waiting period for annulment. This differs significantly from divorce, which requires a 90-day cooling-off period under RCW 26.09.030. Once you file the annulment petition, serve your spouse, and present sufficient evidence at the hearing, the court can grant the declaration of invalidity immediately. Contested annulments may take 3-6 months to complete.
Can I get alimony after an annulment?
Yes, Washington courts may award maintenance (alimony) in annulment cases just as in divorces. Under RCW 26.09.090, courts consider factors including each spouse's financial resources, time needed for education or training, marriage duration, standard of living during marriage, and each party's age, health, and earning capacity. The legal determination that the marriage was invalid does not prevent equitable financial awards.
What if my annulment is denied?
If the court finds insufficient evidence to support your claimed grounds for annulment, it will deny the petition, and your marriage remains legally valid. You would then need to file a separate petition for divorce to end the marriage. Washington's no-fault divorce system allows you to dissolve the marriage by stating it is irretrievably broken under RCW 26.09.030, without proving any grounds. The 90-day waiting period would apply to the divorce proceeding.
Are children from an annulled marriage considered legitimate?
Yes, under RCW 26.09.040, any child born or conceived during a marriage remains legitimate regardless of whether the marriage is later annulled. The declaration of invalidity does not affect the children's legal status, inheritance rights, or eligibility for support. Courts will establish custody arrangements and child support obligations just as they would in divorce cases. Both parents retain full legal obligations to their children.
How does Washington's no-fault divorce differ from annulment?
Washington's no-fault divorce requires no proof of wrongdoing, only a statement that the marriage is irretrievably broken. Annulment requires proving specific grounds such as fraud, duress, mental incapacity, underage parties, or bigamy under RCW 26.04.130. Divorce has a mandatory 90-day waiting period while annulment has none. Divorce ends a valid marriage; annulment declares the marriage was never legally valid. Approximately 25,000 divorces are granted annually versus fewer than 500 annulments.
When to Choose Annulment vs. Divorce
Annulment is appropriate when you can prove one of the five statutory grounds and have religious, immigration, or personal reasons for wanting the marriage declared invalid from inception. Consider annulment if your spouse committed fundamental fraud that induced you to marry, you were forced or coerced into the marriage, you or your spouse lacked mental capacity at the ceremony, either party was underage, or one spouse was already legally married. Act promptly after discovering grounds to avoid ratification arguments.
Divorce is the more practical choice for most couples, as it requires no proof of grounds and follows a straightforward no-fault process. Choose divorce if you cannot prove specific annulment grounds, you continued living as married after learning of potential grounds, the marriage has lasted many years (making void ab initio arguments less credible), or you simply want to end the marriage without complex litigation. The 90-day waiting period is the only procedural difference, and all property, support, and custody matters can be resolved through divorce.
Next Steps
If you are considering annulment vs. divorce in Washington, first assess whether you can prove any of the five statutory grounds for annulment under RCW 26.04.130. Gather documentation supporting your claimed grounds before filing. Consult with a Washington family law attorney to evaluate your evidence and likelihood of success. If annulment grounds are uncertain, divorce may provide a more certain path to ending your marriage. Contact your local superior court clerk to obtain current filing fee information and required forms.
Reviewed by Antonio G. Jimenez, Esq. | Florida Bar No. 21022 | Covering Washington divorce law
Filing fees verified as of January 2026. Verify current fees with your local superior court clerk before filing.