To get a legal annulment in the United States, you must prove your marriage was invalid from the start, not just that it broke down. Accepted grounds vary by state but usually include bigamy, marriage between close relatives, underage marriage without required consent, fraud that goes to the heart of the marriage, force or duress, lack of mental capacity, and in some states inability to consummate. You must also file in the right court, meet any residency rules and act within your state’s deadline for your ground.
A short marriage, on its own, is not a ground. If none of the recognized defects applies, divorce is the way to end the marriage. This guide walks through each requirement, the evidence that tends to persuade judges, the filing steps, and what changes legally once an annulment is granted.
Annulment Requirements at a Glance
Before looking at individual grounds, it helps to see the full checklist. Most annulment petitions need all of the following:
- A recognized legal ground that existed on the wedding day, as listed in your state’s statute.
- Evidence proving that ground, such as records, messages or witness testimony.
- A timely filing within the deadline that applies to your ground.
- Jurisdiction: a court with authority over the case, usually where either spouse lives or where you married.
- No ratification: for voidable grounds, you generally must not have continued the marriage after the problem ended or was discovered.
- Proper service of the petition on your spouse so they can respond.
Annulment vs Divorce
| Annulment | Divorce | |
|---|---|---|
| What it does | Declares the marriage legally invalid | Ends a valid marriage |
| Grounds needed | Yes, specific legal defects that existed at the time of the wedding | No-fault divorce is available in every state |
| Proof | You must prove the ground with evidence | Usually just a statement that the marriage has broken down |
| Deadlines | Often strict time limits depending on the ground | No deadline |
| Property and support | Rules vary; some states limit division and support | Full property division and possible alimony |
| Children | Custody and support decided the same way as in divorce | Custody and support decided in the case |
Because divorce is available on a no-fault basis everywhere, an annulment is usually worth pursuing only when the legal ground is clear or when the person has a strong personal, religious or practical reason to have the marriage treated as invalid.
Void and Voidable Marriages
Most states divide invalid marriages into two groups. The difference affects who can challenge the marriage and how long they have to do it.
- Void marriages were never legal at all. The classic examples are bigamy (one spouse was still legally married to someone else) and incest (marriage between close relatives as defined by state law). A court order is still wise so there is a clear record, but the marriage is invalid regardless.
- Voidable marriages are valid until a court annuls them. Examples include underage marriage, fraud, force, lack of capacity and, in some states, physical incapacity. These can often be “ratified” if the couple keeps living together as spouses after the problem ends or is discovered, which can remove the right to annul.
Common Legal Grounds for Annulment
| Ground | Void or voidable | Typical evidence |
|---|---|---|
| Bigamy | Void | Earlier marriage certificate, proof no final divorce existed |
| Prohibited relationship | Void | Birth certificates, family records |
| Underage marriage | Voidable | Birth certificate, marriage license, consent records |
| Fraud | Voidable | Messages, emails, witness statements, immigration filings |
| Force or duress | Voidable | Threats in writing, police reports, witnesses |
| Lack of capacity | Voidable | Medical records, witness testimony about the wedding day |
| Physical incapacity (some states) | Voidable | Medical evidence |
Bigamy
If either spouse had a living husband or wife from a prior marriage that had not been ended by divorce, annulment or death, the later marriage is void. Evidence is usually straightforward: the earlier marriage certificate and proof that no final divorce was entered.
Prohibited relationship
Every state bans marriage between close blood relatives such as parents and children, siblings, and in many states aunts or uncles and nieces or nephews. Rules on first cousins differ from state to state.
Underage marriage
If a spouse was below the state’s minimum marriage age, or married without the parental or court consent the law required, the marriage may be annulled. A growing number of states have banned marriage under 18 entirely. In many states, the right to annul on this ground ends if the couple keeps living together after the younger spouse reaches the legal age.
Fraud
Fraud is the most misunderstood ground. Courts generally require deception about something that goes to the essence of the marriage, such as hiding an intention never to live together or have a marital relationship, or marrying solely to obtain immigration status. Lying about wealth, career, age or past relationships is usually not enough by itself. You typically must act promptly once you discover the fraud, because continuing to live together afterward can count as ratification.
Force or duress
A marriage entered because of threats or coercion that overcame a person’s free will can be annulled, provided the person did not freely continue the marriage once the pressure ended. If you are in danger, contact local law enforcement or a domestic violence hotline before worrying about paperwork.
Lack of capacity to consent
If a spouse could not understand the nature of marriage at the time of the ceremony, for example because of severe mental illness, cognitive impairment or heavy intoxication, the marriage may be voidable. Medical records and witness testimony about the person’s condition on the wedding day are often the key evidence.
Physical incapacity
Some states allow annulment when one spouse was permanently unable to consummate the marriage and the other did not know this at the time of the wedding.
Time Limits and Eligibility
Deadlines depend on the state and the ground. As one example, California generally allows several years from the relevant event, such as discovering the fraud or the younger spouse turning 18, to file on many voidable grounds, while bigamy and incest can be raised much later. Other states set shorter windows. Because missing a deadline can end your right to an annulment, check your state’s statute or speak to a family lawyer early.
You also need to meet jurisdiction rules. Many states let you file where either spouse lives, and some apply residency periods similar to their divorce rules. You can often file in the state where you married or where you now live, but the correct court depends on local law.
How to File for an Annulment: Step by Step
- Confirm your ground and deadline. Match your facts to your state’s listed grounds and check the time limit.
- Gather evidence. Useful documents include the marriage certificate, prior marriage and divorce records, birth certificates, messages or emails showing fraud or threats, medical records and names of witnesses.
- File a petition for annulment (sometimes called a petition to declare a marriage void or a nullity petition) with the family or county court. Many courts post the forms online. Filing fees vary by county and are often similar to divorce fees; ask about a fee waiver if you cannot afford them.
- Serve your spouse with the papers according to court rules so they have a chance to respond.
- Handle the response. Your spouse may agree, contest the annulment or ask for a divorce instead.
- Attend the hearing. Even uncontested annulments often require you to prove the ground to a judge.
- Receive the judgment. If granted, the court issues a judgment of nullity. Keep certified copies for name changes, remarriage and record updates.
Common Mistakes That Sink Annulment Cases
- Relying on the wrong ground: unhappiness, infidelity after the wedding or a short marriage are not grounds for annulment.
- Waiting too long: voidable grounds often expire, and delay can look like acceptance of the marriage.
- Continuing to live together: staying in the marriage after discovering fraud or after coercion ends may count as ratification.
- Thin evidence: a judge needs proof, not just your account. Save messages and documents as soon as you suspect a problem.
- Ignoring property and children: failing to ask the court to address assets, debts, custody or support can leave issues unresolved.
What Happens After an Annulment
- Marital status: you are legally single and free to remarry. On forms you can usually describe yourself as never married, though some applications ask specifically about annulments.
- Children: children born to the couple remain legally the children of both parents. Custody, visitation and child support are decided on the child’s best interests, just as in a divorce.
- Property: states handle this differently. Some divide jointly acquired property much like a divorce; others try to return each party to their pre-marriage position.
- Support: spousal support after an annulment is limited in many states, but some protect a “putative spouse”, meaning someone who honestly believed the marriage was valid, with rights similar to a divorcing spouse. Our guide to what alimony is based on explains how courts weigh support.
- Immigration and benefits: an annulment can affect immigration status and some benefits linked to the marriage, so get specialist advice if either applies.
Civil Annulment vs Religious Annulment
A court annulment and a religious annulment are separate processes. In the Catholic Church, for example, a “declaration of nullity” from a church tribunal decides whether a marriage was valid in religious terms. It has no effect on your legal status, and a civil annulment or divorce does not settle the religious question. Many people need both.
Do You Need a Lawyer?
You can file on your own, and many courts run self-help centers. A family lawyer is strongly recommended if your spouse contests the case, if there are children, significant property or immigration issues, or if you are close to a deadline. If the case goes to trial, an experienced litigation lawyer can present evidence and cross-examine witnesses. Many local bar associations offer referral services with low-cost initial consultations.
For more plain-English legal guides, explore our Law category.
Bottom Line on Annulment Requirements
An annulment requires a specific legal defect that existed when you married, solid evidence of it, and a filing made on time in the right court. Start by matching your facts to your state’s statute and noting the deadline, then gather documents before you file. If your situation does not fit a recognized ground, a no-fault divorce is usually the faster and simpler route.
Frequently Asked Questions
Can I get an annulment because the marriage was short?
No. The length of the marriage is not a ground on its own. You must prove a legal defect such as bigamy, fraud, force, lack of capacity or underage marriage.
Is there a time limit to get an annulment?
Usually, yes, for voidable grounds such as fraud, force or underage marriage, and the limit varies by state. Void grounds such as bigamy can often be raised much later.
Does lying count as fraud for an annulment?
Only if the lie goes to the essence of the marriage, such as never intending to live as spouses. Lies about money, jobs or past relationships usually do not qualify by themselves.
What happens to children after an annulment?
They remain the legal children of both parents. Courts decide custody and child support based on the child’s best interests, as in a divorce.
Can my spouse stop an annulment?
Your spouse can contest the petition by disputing the ground or the evidence, or by arguing the marriage was ratified. If the judge finds no valid ground, the annulment is denied and divorce remains available.
Is a church annulment the same as a legal annulment?
No. A religious annulment affects your status within the faith only. To change your legal status, you need a civil annulment or divorce from a court.
This article is general information, not legal advice. Annulment law differs by state, so consult a licensed family law attorney about your situation.
