An annulment in Wisconsin is a court order declaring that a marriage was never legally valid, and state law allows it only on four specific grounds listed in Section 767.313. Each ground carries its own filing deadline, the case runs through circuit court, and if the petition fails the marriage stays intact. Annulments are far less common than divorces because the bar is high and the windows to file are short.
The Four Grounds and Their Deadlines
Wisconsin’s annulment statute groups several distinct problems into four subsections. Knowing which one fits your situation determines both what you have to prove and how much time you have to file.1Wisconsin State Legislature. Wisconsin Statutes 767.313 – Annulment
Lack of Capacity, Fraud, Force, or Duress
Section 767.313(1)(a) covers marriages where, at the time of the ceremony, one party could not truly consent because of age, mental illness or cognitive impairment, or intoxication from alcohol or drugs. The same subsection reaches marriages entered through force, threats, or serious psychological coercion, along with marriages induced by fraud “involving the essentials of marriage.”
That phrase does real work. Not every lie qualifies. The fraud has to go to something fundamental about the marriage itself. Courts have recognized claims based on concealing an inability to have children, hiding an existing marriage, or lying about the intent to live together as spouses. Exaggerating income or hiding a gambling problem is a much harder sell, because those deceptions don’t strike at the core of what marriage is.
Duress means one party was actually deprived of the ability to make a free choice. Threats of physical violence, blackmail, and extreme emotional manipulation can qualify. Family pressure or cultural expectations, on their own, typically do not.
The deadline for anything under this subsection is one year from when the petitioner learned of the condition. If you discovered the fraud six months after the wedding, the clock starts at that discovery, not at the wedding. But if you kept living with your spouse after finding out, a court will likely treat that as acceptance of the marriage and deny the annulment.
Inability to Consummate the Marriage
Section 767.313(1)(b) allows annulment when one spouse physically cannot consummate the marriage through sexual intercourse and the other spouse did not know about the incapacity at the time of the wedding. Either spouse can file, and the deadline is one year after learning of the incapacity. This ground is rarely invoked but remains on the books.
Underage Marriage
Wisconsin requires a person to be at least 18 to marry without parental consent. A 16- or 17-year-old can marry only with written consent from a parent, guardian, or custodian, given under oath or verified by affidavit before the county clerk.2Wisconsin State Legislature. Wisconsin Code 765.02 – Marriageable Age; Who May Contract If a 16- or 17-year-old married without that consent, or if either party was under 16, the marriage can be annulled under Section 767.313(1)(c).
The underage spouse, or a parent or guardian, can file at any time before the minor turns 18. A parent or guardian must file within one year of learning about the marriage. If the couple keeps living together after the underage spouse turns 18, the window closes and the marriage is treated as ratified.
Prohibited Marriages
Wisconsin prohibits marriages between close relatives (nearer than second cousins, with a narrow exception for first cousins), marriages where one party already has a living spouse, and marriages entered before the six-month waiting period following a divorce judgment has ended.3Wisconsin State Legislature. Wisconsin Code 765.03 – Prohibited Marriages Under Section 767.313(1)(d), either spouse can file for annulment of a prohibited marriage within 10 years of the wedding. The 10-year limit does not apply to bigamy as long as the prior marriage remains in effect.
Two Absolute Limits
Every annulment requires a judicial proceeding, and no marriage can be annulled after one of the parties has died.
Residency and Where to File
At least one spouse must have been a genuine resident of the Wisconsin county where the case is filed for at least 30 days before filing. Alternatively, if the marriage took place in Wisconsin within the past year, the case can be brought in the state regardless of current residency.4Wisconsin State Legislature. Wisconsin Code 767.301 – Residence Requirements
The 30-day county requirement is shorter than the six-month state residency required for divorce, but it still has to be met. Have proof ready when you file: a driver’s license, voter registration, lease, or utility bills. If neither spouse currently lives in Wisconsin and the marriage did not take place in the state within the past year, Wisconsin courts have no jurisdiction.
How the Case Moves Through Court
An annulment starts with a petition filed in the circuit court of the county where the residency requirement is satisfied. The petition identifies both spouses, states the date and location of the marriage, and lays out the specific statutory ground. It has to be signed under oath.
The filing fee is $184.50 when no support or maintenance is requested, or $194.50 when it is.5Wisconsin Court System. Wisconsin Circuit Court Fee, Forfeiture, Fine and Surcharge Tables If you cannot afford it, file a Petition for Waiver of Fees and Costs (Form CV-410A) with a sworn statement of financial hardship.6Wisconsin Court System. Wisconsin Court System Form CV-410A – Petition for Waiver of Fees and Costs
After filing, the other spouse must be formally served with the papers. Wisconsin allows personal service by someone other than you. If personal service fails after reasonable effort, the statute permits leaving a copy with a competent household member at least 14 years old, or as a last resort, service by publication in a newspaper.7Wisconsin State Legislature. Wisconsin Code 801.11 – Personal Jurisdiction, Manner of Serving Summons For A private process server or a sheriff’s deputy are the usual choices.
Once served, the respondent has 40 days to file a written answer. No answer means the petitioner can ask for a default judgment. A contested case moves on to a hearing.
Annulments are not granted on paperwork alone. You have to appear before a judge and prove the statutory ground. The burden falls entirely on the petitioner, and courts scrutinize these cases carefully. Evidence depends on the ground: medical records and expert testimony for mental incapacity or inability to consummate; sworn statements, police reports, or threatening messages for duress; communications showing what was represented before the marriage versus the truth for fraud. Timing matters throughout. Filing promptly after discovery strengthens your case. Continuing to live with your spouse after learning the truth seriously undermines it.
What an Annulment Does Not Erase
A common misconception is that annulment simply sends each spouse away with whatever they came in with. Wisconsin law does not work that way.
Section 767.61 requires the court to divide the parties’ property upon a judgment of annulment, using the same framework applied in divorce.8Wisconsin State Legislature. Wisconsin Code 767.61 – Property Division The court starts from a presumption of equal division, then weighs factors like length of the marriage, each party’s contributions (including homemaking and child care), earning capacity, and age and health. Gifts from third parties and inheritances are generally excluded unless leaving them alone would create hardship for the other spouse or the children.
Maintenance, what many people call alimony, is also available. Under Section 767.56 a court can order one spouse to pay the other for a limited or indefinite period, weighing the length of the marriage, each party’s earning capacity, and the time and education needed for the receiving spouse to become self-supporting.9Wisconsin State Legislature. Wisconsin Code 767.56 – Maintenance Many people are caught off guard by this, assuming an annulment eliminates financial obligations entirely.
Custody and child support work the same way. Wisconsin courts decide custody and physical placement in annulment cases under the same best-interests analysis applied in divorce, and the statute says so directly.10Wisconsin State Legislature. Wisconsin Code 767.41 – Custody and Physical Placement Joint legal custody is presumed to be in the child’s best interest. When placement is contested, each party files a proposed parenting plan, and the court considers each parent’s relationship with the child, the child’s adjustment to home and school, any history of abuse, and the mental and emotional health of all involved. Child support follows Wisconsin’s percentage-of-income standard set by the Department of Children and Families, with room to deviate when strict application would be unfair.11Wisconsin State Legislature. Wisconsin Code 767.511 – Child Support
Downstream Effects to Plan For
An annulment can ripple into taxes, insurance, benefits, and immigration status in ways that surprise people.
Taxes
The IRS treats an annulled marriage as though it never existed. Joint returns you filed during the marriage cannot stand. You have to file amended returns (Form 1040-X) for every prior year affected by the annulment that is still open under the statute of limitations, which is generally three years from the original filing date or two years after the tax was paid, whichever is later.12Internal Revenue Service. Filing Taxes After Divorce or Separation Filing status changes to single, or head of household if you qualify. That can shift your bracket, change credit and deduction eligibility, and produce either additional tax owed or a refund. If the annulment finalizes partway through the year, you file as single (or head of household) for that entire year. A tax professional is worth the cost when more than a year or two of returns need correction.
Health Insurance
An annulment is a qualifying life event that ends coverage for a spouse enrolled under the other’s employer plan. Federal law treats divorce and legal separation as qualifying events for COBRA continuation coverage, and the same principle applies when a marriage ends by annulment.13Office of the Law Revision Counsel. 29 USC 1163 – Qualifying Event The former spouse can elect COBRA for up to 36 months at the full premium plus a 2% administrative fee. You have 60 days from the annulment to notify the plan administrator.
Social Security
Because an annulment retroactively erases the marriage, you lose eligibility for spousal or survivor benefits tied to it. If you were receiving benefits before the marriage that stopped when you married (for example, survivor benefits from a prior spouse), those can be reinstated as of the month the annulment decree is issued, provided you file a timely application with the Social Security Administration.14Social Security Administration. Reinstatement of Benefits When Marriage Terminates
Immigration
A spouse who obtained conditional permanent resident status through the marriage faces a serious complication. The standard process for removing conditions on a green card requires a joint petition with the sponsoring spouse, and after an annulment that joint filing is no longer possible. The conditional resident can file Form I-751 individually by requesting a waiver, but must provide strong evidence that the marriage was entered in good faith even though it was later annulled. This is one of the more consequential downstream effects and often calls for an immigration attorney.
Civil Versus Religious Annulment
A civil annulment from a Wisconsin circuit court and a religious annulment from a church are separate proceedings with no legal overlap. A religious annulment changes your marital status within your faith community and has no effect on legal rights, property, taxes, or custody. A civil annulment carries no weight inside a religious institution. If both matter to you, each has to be pursued on its own track.