There is usually no fixed deadline measured from your wedding day for how long after marriage you can get an annulment. In most states the clock runs from when you discovered the problem that made the marriage invalid, not from the ceremony. Some grounds, like bigamy and incest, carry no time limit at all. Others, like fraud or duress, typically must be raised within a few years of discovery, and a court can refuse your petition even sooner if it decides you accepted the marriage by continuing to live as a couple after learning the truth.
Void or Voidable Decides Whether a Clock Runs at All
The first question is which category your marriage falls into, because that answers whether any deadline applies.
A void marriage was never legal to begin with. The two classic examples are bigamy, where one spouse was already married, and incest, where the spouses are too closely related by blood under state law. A void marriage has no legal force from day one, so you can seek a court order declaring it invalid at any point, whether that is six months or thirty years after the ceremony. No statute of limitations applies, and the marriage cannot become valid through the passage of time or the couple’s conduct.
A voidable marriage is treated as legally valid until a court says otherwise. Grounds include fraud, duress, being underage at the ceremony, mental incapacity, and permanent physical incapacity that was unknown to the other spouse. Because the marriage is technically valid until annulled, these cases carry tighter time pressure and a real risk that delay works against you.
The Clock Runs From Discovery, Not the Wedding
For voidable grounds, states that impose a filing deadline typically start the clock when the injured spouse discovered, or reasonably should have discovered, the problem. Common windows run from one to four years after discovery, depending on the state and the specific ground.
Underage marriages work a little differently. The deadline usually runs from when the minor reaches the age of majority, and some states bar the action entirely if the underage spouse continued to live freely with the other spouse after turning eighteen.
The variation across states is real. One state might give you four years from discovery to file a fraud-based annulment; another might give you two. A handful impose no specific statute of limitations for voidable marriages but still allow courts to weigh delay as a factor. Because the deadlines differ so much, checking your state’s family code early is the single most important step if you are considering annulment.
Ratification: How Waiting Can Kill Your Case Before Any Deadline Runs
Even where no formal deadline has passed, a court can deny your annulment if it concludes you ratified the marriage. Ratification means you learned about the defect and chose to keep living as a married couple anyway. If you discover your spouse committed fraud to induce the marriage and then continue cohabiting for another year, a judge may reasonably conclude you accepted the marriage despite the problem. At that point, divorce becomes your only option.
This is where most annulment cases fall apart in practice. People discover the issue, weigh their options for months, and by the time they file, the other spouse argues ratification. Courts are not sympathetic to long delays followed by annulment petitions. Once you learn of a ground for annulment, the practical move is to consult a family law attorney quickly and stop cohabiting if that is possible.
Grounds and the Timing That Attaches to Each
Every annulment petition must rest on a specific legal ground showing the marriage was flawed from the start. The grounds vary somewhat by state, but the widely recognized ones fall into a handful of categories, each with its own timing picture.
- Bigamy. One spouse was already legally married. Void from inception, no deadline.
- Incest. The spouses are too closely related by blood under state law. Void from inception, no deadline.
- Underage marriage. One or both spouses were below the legal age of consent without the required parental or court approval. Deadline typically runs from the minor’s eighteenth birthday, and continued cohabitation after that can bar the action.
- Mental incapacity. One spouse could not understand the nature of the marriage contract at the ceremony, whether from mental illness, intellectual disability, or severe intoxication. Voidable; discovery-based deadline.
- Physical incapacity. One spouse is permanently unable to have sexual intercourse, the condition existed at the time of marriage, and the other spouse did not know. This ground is about the inability to consummate, not the inability to have children. Voidable; discovery-based deadline.
- Duress. One spouse was coerced or threatened into the marriage. Voidable; discovery-based deadline, though duress often ends when the coercion ends.
- Fraud or misrepresentation. One spouse was deceived about something fundamental to the marriage itself. Voidable; discovery-based deadline, commonly one to four years.
Fraud Is Narrower Than Most People Expect
Fraud is one of the most commonly claimed grounds, but courts apply it narrowly, and that affects whether you have a case at all before you worry about timing. The deception must go to what courts call the essentials of the marriage, which historically means misrepresentations about sex, procreation, or core identity. Hiding a prior marriage, concealing an inability to have children, lying about impotence, or failing to disclose a serious communicable disease all qualify. Concealing a pregnancy by another person at the time of marriage is another recognized example.
Lying about wealth, income, career, or general character traits is almost never enough. Courts have consistently held that misrepresentations about accidental qualities like finances or personality do not go to the essence of the marital relationship. If your spouse lied about being rich, that is deeply unfair, but a court will likely tell you the remedy is divorce, not annulment.
When Divorce Fits the Timing Better
Annulment sounds cleaner than divorce on paper, but it is often harder to obtain and can leave you worse off financially. Because annulment treats the marriage as though it never legally existed, you lose access to the property division and spousal support frameworks that divorce provides. Each spouse generally walks away with whatever they brought in and whatever is titled in their name. Spousal support is largely off the table in most states, because the legal relationship that would trigger a support obligation never existed. About half the states soften this through the putative spouse doctrine, which protects a spouse who entered the marriage in good faith, but that protection is not automatic.
Annulment also requires you to prove specific grounds, meaning evidence of fraud, duress, bigamy, or another qualifying defect. Divorce in every state is available on no-fault grounds, so you do not need to prove anything other than that the marriage has broken down. If your annulment grounds are weak, hard to document, or discovered late enough that ratification is a real risk, a contested annulment proceeding can become more expensive and uncertain than a straightforward divorce. Annulment tends to make the most sense for short marriages with few shared assets, where a qualifying ground is clear, well-documented, and raised promptly after discovery.