Fraud as Grounds for Annulment: Proof, Deadlines, and Filing

Fraud is grounds for annulment in every U.S. state, but only when the lie touched something fundamental to the marriage itself and you act on it quickly. Courts apply what is commonly called the “essentials of marriage” test: the deception has to be so central that you would not have said yes had you known the truth. Under the Uniform Marriage and Divorce Act, which most states follow, you have 90 days after discovering the fraud to file.¹

What Counts as Fraud Serious Enough to Annul a Marriage

Not every pre-wedding lie qualifies. Exaggerating your income, shaving a few years off your age, or inflating career accomplishments almost certainly won’t be enough. The deception has to touch something that goes to the heart of what marriage means as a legal and personal commitment. Disappointments that surface later, no matter how sharp, are the territory of divorce.

The categories courts consistently accept share a common thread: each one involves a lie about something that defines what it means to be married to another person.

Concealed intent about children. A spouse who promised to have children but secretly never intended to, or who hid a known inability to conceive, has typically deceived the other about a fundamental purpose of the marriage.
Hidden serious health conditions. Concealing a contagious disease or a condition that makes physical intimacy dangerous can invalidate consent. The UMDA separately recognizes inability to consummate the marriage as its own ground for annulment.¹
Undisclosed criminal history, particularly involving violence or sex offenses, when it directly affects the safety or well-being of the innocent spouse.
Immigration fraud. Marrying solely to obtain residency or a green card, with no intent to build a real partnership, is fraud in both the family law and criminal law sense.
Concealed prior marriage. If your spouse was still legally married to someone else, the new marriage is typically void from the start, not merely voidable.
Hidden history of domestic violence or massive undisclosed debt. These can qualify, though courts scrutinize them more closely than the categories above.

The test in every case is whether the lie would have changed your answer at the altar.

Void Versus Voidable Marriages

Fraud-based annulments involve what the law calls a voidable marriage. Until a court says otherwise, you are legally married with all the rights and obligations that follow. You have to file, prove the fraud, and get a judge to issue a decree.

Bigamy and incest produce a void marriage instead. Those unions are legally invalid from the moment they occur, whether or not anyone goes to court. Even so, getting a formal decree for a void marriage is worth doing, because without one you may face complications with property titles, insurance, government benefits, and future marriages.

The 90-Day Window and the Ratification Trap

Speed matters more than most people realize. Under the UMDA, you have 90 days after learning about the fraud to file for annulment.¹ State deadlines vary, but the principle is consistent: once you know, the clock is running. Wait too long and your only option becomes divorce.

Then there is ratification. If you discover the fraud and keep living with your spouse as a married couple, most courts treat that as acceptance of the situation. You learned the truth and chose to stay, so the fraud no longer undermined your consent. This is where most annulment claims quietly die. People discover the lie, agonize over what to do, keep living together while they figure it out, and by the time they act the window has closed. If you are seriously considering an annulment for fraud, separate first and file quickly.

What You Have to Prove

You generally need to establish four things: your spouse made a false statement about something material, they knew it was false or made it recklessly, you relied on that statement in deciding to marry, and the lie went to the essentials of the marriage rather than a peripheral detail. Many jurisdictions apply a clear and convincing evidence standard, which sits above the ordinary civil standard of a preponderance of the evidence. Vague suspicions won’t do it.

Evidence that actually moves the needle:

Written communications where the defrauding spouse acknowledged the lie.
Testimony from people who heard specific false statements before the wedding.
Official records that contradict what was represented. Certified divorce records or marriage certificates from another jurisdiction carry real weight when the fraud involves a hidden prior marriage.
Medical records when the fraud involved concealed health conditions.
Credit reports and bank statements when the deception was financial.

Gather what you can before filing. Courts are asking whether you were genuinely deceived about something that mattered, not whether the marriage turned out to be disappointing, and concrete proof is what separates the two.

How the Filing Process Works

The case starts at your local family court, where you file a petition (sometimes called a complaint) for annulment or declaration of invalidity. The petition identifies both spouses, states when and where the marriage took place, describes the fraud, and explains when you discovered it. Filing fees typically run a few hundred dollars.

After filing, you must formally serve the other spouse, usually through a process server or sheriff’s deputy. If your spouse has disappeared or is avoiding service, most courts allow service by publication in a newspaper, but only after you show real effort to locate the person through last known addresses, employers, family, and public records.

Once served, the respondent has a window to answer. If they contest, the case proceeds to a hearing before a judge; most annulment proceedings have no jury. If the respondent never answers, you can often obtain a default judgment. If the judge finds the fraud meets the legal threshold, the court issues a decree of annulment.

Children, Property, and Support After an Annulment

Children born during an annulled marriage are legitimate. The UMDA states this directly, and every state follows the same rule.¹ Custody, visitation, and child support are handled the same way they would be in a divorce, based on the best interests of the child. Annulment does not erase parental obligations.

Property is more complicated because, in theory, an annulled marriage never existed. To prevent that fiction from leaving the innocent spouse with nothing, many jurisdictions apply the putative spouse doctrine: if you entered the marriage in good faith believing it was valid, the court can divide property acquired during the relationship as if the marriage had been real. The UMDA supports this by allowing courts to apply the same property, support, and custody rules used in divorce when the interests of justice require it.¹ The spouse who knew the marriage was defective generally cannot invoke these protections.

Spousal support after annulment is less predictable. Some states allow it under the putative spouse framework; others hold that because no valid marriage existed, there is no basis for ongoing support. Outcomes depend heavily on your jurisdiction and the facts.

Criminal Exposure in Immigration Marriage Fraud

When the fraud involves marrying someone solely to circumvent immigration law, the consequences reach beyond family court. Federal law makes it a crime to knowingly enter a marriage for the purpose of evading immigration requirements, punishable by up to five years in prison and a fine of up to $250,000.² Both spouses can be prosecuted if both participated knowingly.

A marriage found fraudulent for immigration purposes will result in revocation of any immigration benefits obtained through it. The non-citizen spouse faces deportation and a permanent bar on future immigration applications based on a spousal relationship. If you were the innocent party, cooperating with immigration authorities early can help protect your own legal standing.

1
South Dakota Law Review. Uniform Marriage and Divorce Act
2
Office of the Law Revision Counsel. 8 USC 1325 – Improper Entry by Alien