Under Utah marriage age laws, you must be 18 to marry on your own. If you’re 16 or 17, you can marry only with a parent’s consent, written authorization from a juvenile court, and premarital counseling ordered by the court. No one under 16 can legally marry in Utah under any circumstances, and no exception, parental or judicial, can change that.1Utah Legislature. Utah Code 81-2-403 – Marriages Prohibited and Void
The Minimum Age to Marry in Utah
At 18, you can apply for a marriage license without any additional approvals. Below that, Utah law defines a “minor” for marriage purposes as someone who is 16 or 17.2Utah Legislature. Utah Code 81-2-301 – Definitions for Part That definition is deliberately narrow. It leaves out anyone younger.
Utah Code § 81-2-403 prohibits any marriage involving a person under 18 unless that person is 16 or 17 and has both parental consent and juvenile court authorization. A marriage involving someone under 16 is void from the start. It isn’t a marriage that can be fixed, ratified, or recognized later.1Utah Legislature. Utah Code 81-2-403 – Marriages Prohibited and Void
Utah previously allowed limited exceptions for 15-year-olds. The legislature closed that door effective May 14, 2019. Marriages of minors that were lawfully entered before that date remain valid, but no new marriage below 16 can occur.1Utah Legislature. Utah Code 81-2-403 – Marriages Prohibited and Void
What a 16- or 17-Year-Old Must Do
Three things have to happen before the county clerk can issue a license to a 16- or 17-year-old. Miss any of them and the clerk cannot proceed.
Parental Consent in Person
A parent or legal guardian must give signed consent face-to-face at the county clerk’s office. Mailed or notarized consent from elsewhere does not satisfy the statute.3Utah Legislature. Utah Code 81-2-304 – Marriage of a Minor – Consent of Parent or Guardian – Juvenile Court Authorization
Which parent signs depends on custody. If the parents are divorced, the parent with legal custody provides consent. If custody is shared, the parent with majority physical custody signs. If neither parent has custody, a legal guardian can consent but has to show a court order proving guardianship.3Utah Legislature. Utah Code 81-2-304 – Marriage of a Minor – Consent of Parent or Guardian – Juvenile Court Authorization
The adult giving consent must bring documentation proving three things at the clerk’s office: their legal relationship to the minor, the minor’s identity, and the birth dates of both applicants. Accepted documents include a certified birth certificate, a passport, a driver’s license, or a court order establishing custody. Temporary or altered documents will not be accepted.3Utah Legislature. Utah Code 81-2-304 – Marriage of a Minor – Consent of Parent or Guardian – Juvenile Court Authorization
Juvenile Court Authorization
A parent’s signature alone is not enough. The minor and the parent or guardian must also obtain written authorization from a juvenile court judge or court commissioner in the county where either party lives. Before approving, the judge or commissioner has to find two things: that the minor is entering the marriage voluntarily, and that the marriage is in the minor’s best interest.4Utah Legislature. Utah Code 81-2-304 – Marriage of a Minor – Consent of Parent or Guardian – Juvenile Court Authorization
That hearing gives the court room to look at the minor’s maturity, the living arrangements, and whether family or the other party is pressuring the minor. Without the written authorization, no license will issue.
Premarital Counseling
The court is required to order premarital counseling for both parties before approving the marriage. The only exception is where counseling is not reasonably available in the area.4Utah Legislature. Utah Code 81-2-304 – Marriage of a Minor – Consent of Parent or Guardian – Juvenile Court Authorization It is not optional, and county clerks cannot waive it.
The Seven-Year Age Gap Limit
Even with consent, court authorization, and counseling complete, a judge cannot authorize a 16- or 17-year-old to marry someone more than seven years older. The rule is absolute. Parental support and judicial discretion cannot override it.5Utah State Judiciary. Marriage Because the clerk verifies both applicants’ ages through birth certificates or other identity documents during the application, the age gap check happens before any license is issued.
Legislation introduced in 2025 (SB 76) proposed tightening the gap to four years. If enacted, a 16-year-old could marry someone up to age 20 rather than up to age 23. Check with your county clerk or the Utah State Legislature’s website for the current status, since the change may be in effect by the time you read this.
When a Marriage Is Void
A marriage involving anyone under 16, or a marriage of a 16- or 17-year-old that skipped the required consent and court authorization, is void under Utah law.1Utah Legislature. Utah Code 81-2-403 – Marriages Prohibited and Void Void means the marriage is treated as though it never existed. No annulment is needed to make it invalid, because it was never valid.
In practice, a court order is often still useful to document the situation and resolve what came out of the relationship. If the couple had children, shared property, or combined finances, those issues can be addressed through an annulment proceeding. They don’t vanish because the marriage was void; they’re just handled under different legal rules than a divorce would use.
Criminal Penalties for Marrying a Minor Unlawfully
Utah does not treat an illegal marriage as a paperwork problem. An adult 18 or older who marries a minor without meeting the requirements of § 81-2-304 can be charged with a third degree felony under recently enacted legislation.6Utah Legislature. HB 103 – Unlawfully Marrying a Minor A third degree felony in Utah carries up to five years in prison.
Separate charges apply to anyone who impersonates a parent or guardian to help a minor obtain a license, or who forges a parent’s or guardian’s signature on consent documents. That offense is also a third degree felony.6Utah Legislature. HB 103 – Unlawfully Marrying a Minor Marriage license applications are signed under penalty of perjury, so lying about age or identity on the application carries its own legal exposure.
Where These Rules Live in the Code
The marriage age rules are codified in Title 81, Chapter 2 of the Utah Code, which replaced the older Title 30 provisions after a recodification. The definition of “minor” sits at § 81-2-301, the consent and court authorization process at § 81-2-304, and the prohibition on marriages under 16 at § 81-2-403. If you’re working through this with a county clerk, a family lawyer, or a juvenile court, those are the sections to point to.