New Mexico marriage laws treat marriage as a civil contract between two people who are at least 18, mentally capable of consenting, and not already married to someone else. You get a license from any county clerk for $55, there is no waiting period and no blood test, and the license never expires. A ceremony performed by an authorized officiant before witnesses completes the marriage.1Justia. New Mexico Code 40-1-1 – Marriage is Civil Contract Requiring Consent of Parties
Who Can Marry in New Mexico
Anyone 18 or older who is mentally capable of consenting and not already married can marry in New Mexico. Someone who cannot understand the nature of the commitment cannot legally enter the contract.
Minors face real hurdles. A 16- or 17-year-old who has not been emancipated can marry only with written consent from every living parent listed on the birth certificate, or with a district court order authorizing the marriage on a parent’s or guardian’s request for good cause. A certified copy of any court order has to be filed with the county clerk before the license issues.2Justia. New Mexico Code 40-1-6 – Restrictions on Marriage of Minors
Children under 16 need direct authorization from a judge in the children’s or family court division, and only in narrow situations involving paternity and support proceedings or pregnancy.2Justia. New Mexico Code 40-1-6 – Restrictions on Marriage of Minors
Same-sex couples have the same rights to marry as any other couple under the U.S. Supreme Court’s decision in Obergefell v. Hodges and the federal Respect for Marriage Act.3Justia. Obergefell v. Hodges, 576 U.S. 644 (2015)4Congress.gov. H.R.8404 – Respect for Marriage Act
Certain close relatives cannot marry each other. State law declares marriages between parents and children (including grandparents and grandchildren of any degree), full or half siblings, uncles and nieces, and aunts and nephews incestuous and void. These restrictions apply equally to relationships involving children born outside of marriage.5Justia. New Mexico Code 40-1-7 – Incestuous Marriages
Marrying someone while already married to another living spouse is bigamy, a fourth degree felony under the state’s criminal code, and both parties to the bigamous marriage can be charged.6Justia. New Mexico Code 30-10-1 – Bigamy Any prior marriage must be ended by death, divorce, or annulment before you remarry.
Getting a Marriage License
Apply at any county clerk’s office in the state. The license is valid for a ceremony performed anywhere in New Mexico, so the county you choose does not have to be the county where you plan to marry.
Both applicants must appear in person. Bring:
- A current, government-issued photo ID such as a driver’s license or passport for each applicant. A certified copy of your birth certificate can substitute if you do not have a photo ID.7Chaves County, NM. Marriage Licenses
- Your full legal name, date and place of birth, and Social Security number.
- Payment of the $55 fee, typically by cash or credit card.8San Juan County. Marriage License
The fee rose from $25 to $55 effective June 20, 2025 under Senate Bill 290, and it is non-refundable.
There is no waiting period and no blood test. You can use the license the moment it is issued. New Mexico marriage licenses also do not expire, so you can hold one indefinitely before the ceremony.9Santa Fe County. Marriage Licenses
Who Can Perform the Ceremony
State law requires the marriage to be “solemnized,” meaning the couple is joined before witnesses in a ceremony. The people authorized to officiate are:10Justia. New Mexico Code 40-1-2 – Marriages Solemnized; Ordained Clergy or Civil Magistrates May Solemnize
- Ordained clergy of any religious denomination, regardless of the specific rites they practice.
- Authorized representatives of federally recognized Indian nations, tribes, or pueblos.
- Active or retired judges, justices, and magistrates of courts established under the New Mexico Constitution, the U.S. Constitution, or state or federal law. Civil magistrates cannot charge a fee for performing a wedding.
Religious societies and federally recognized tribes may also celebrate marriages according to their own rites, in which case the presiding person sends a transcript to the county clerk certifying the marriage.
The statute uses the plural “witnesses” without setting an exact number. In practice, clerk offices expect at least two witnesses, and witnesses must be at least 18. New Mexico does not appear to allow self-solemnized marriages performed without an officiant.
After the Ceremony
The signed license has to come back to the county clerk’s office that issued it so it can be recorded. Either spouse, the officiant, or a friend or family member can return it in person or by mail. The statutory deadline is 90 days after the ceremony.9Santa Fe County. Marriage Licenses Missing that deadline does not invalidate the marriage, but a recorded license is what you will need later for certified copies used in name changes, insurance enrollments, and other legal purposes.
When a Marriage Can Be Annulled
An annulment treats a marriage as if it never legally existed. New Mexico’s statutory grounds are narrow. Section 40-1-9 lets a district court declare a marriage void when the spouses are within the prohibited degrees of relation or when one spouse is below the legal age.11Justia. New Mexico Code 40-1-9 – Prohibited Marriages
In an underage-marriage annulment, only the minor or someone acting on the minor’s behalf (a parent, guardian, or the district attorney) can file. The older spouse cannot. The court may award alimony to the minor until they reach the age of majority or remarry. If both spouses continue living together until each has reached the legal age, the marriage becomes valid from that point on.11Justia. New Mexico Code 40-1-9 – Prohibited Marriages
Broader grounds like fraud, duress, or lack of mental capacity are not spelled out in New Mexico’s marriage statutes. Courts have historically addressed those situations through general equitable principles and case law, and a spouse in that position would need to petition the district court and prove the specific defect.
Out-of-State and Common Law Marriages
New Mexico recognizes any marriage performed outside the state as long as it was valid where it occurred, and gives it the same legal effect as a marriage performed in-state.12Justia. New Mexico Code 40-1-4 – Lawful Marriages Without the State Recognized
You cannot create a common law marriage inside New Mexico. Living together, sharing finances, and presenting yourselves as spouses will not produce a legal marriage here, no matter how long the arrangement lasts.13Social Security Administration. SSA POMS PR 05605.034 – New Mexico The state will, however, recognize a common law marriage that was validly formed in a state that allows them, under the same out-of-state recognition statute.12Justia. New Mexico Code 40-1-4 – Lawful Marriages Without the State Recognized
Legal Effects Once You’re Married
New Mexico is a community property state. Income earned and debts incurred during the marriage generally belong equally to both spouses, which has significant implications for divorce, estate planning, and creditor claims. Property you owned before the marriage or received during it as a gift or inheritance typically stays your separate property, though commingling it with marital funds can blur that line.
Marriage changes your federal tax filing status. Married couples can file jointly or separately, and joint filing usually produces a lower combined tax bill, though two high earners with similar incomes sometimes pay more together than they would as single filers.14Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
Marriage also opens the door to Social Security spousal benefits. A spouse can claim benefits based on the higher-earning partner’s record, up to half of that worker’s primary insurance amount at full retirement age, with reductions if you claim early. If your own earnings record produces a higher benefit, Social Security pays you that amount instead.15Social Security Administration. Benefits for Spouses
Changing Your Name
Marriage does not automatically change your legal name in New Mexico. If you want to take your spouse’s surname or hyphenate, start with the Social Security Administration. File Form SS-5 in person at a local office or by mail, with your certified marriage certificate as proof of the name change and an unexpired photo ID such as a driver’s license or U.S. passport. SSA requires original or certified documents and will not accept photocopies or notarized versions.16Social Security Administration. Application for Social Security Card There is no fee for the replacement card. Once your Social Security record is updated, move on to the Motor Vehicle Division for a new driver’s license, then your passport, bank accounts, employer records, and anything else tied to your legal name.