A common law marriage is a legally valid marriage formed without a license or ceremony, recognized in a small number of states when a couple agrees to be married, lives together as spouses, and presents themselves to others as married. It is not created by living together for a certain number of years, and it does not exist at all in most states. Where it does exist and the requirements are met, it carries the same legal weight as any other marriage.
What It Actually Takes to Be Married This Way
Even in states that allow it, cohabitation alone does not do it. The Social Security Administration summarizes the framework that recognizing states generally follow, and four elements have to line up at the same time.
- A present agreement to be married. Both people must consent to being married to each other right now, not someday, and the agreement has to contemplate a permanent union that ends only by death, divorce, or annulment.1Social Security Administration. GN 00305.060 – Common-Law Marriage — General
- Living together as spouses. There is no universal minimum duration. Occasional overnights or sharing space as roommates does not count.
- Holding out as married. The couple must present themselves to the community as spouses: introducing each other that way, sharing a last name, filing joint tax returns, listing each other on insurance policies.
- Legal capacity. Both parties have to be old enough under state law (usually 18), not already married to someone else, and mentally competent to consent.1Social Security Administration. GN 00305.060 – Common-Law Marriage — General
Miss one of these and there is no marriage. A couple who agreed to marry years ago but never lived together is not married. A couple who lives together but tells everyone they are just roommates is not married either.
The Seven-Year Myth
No state has a seven-year rule. No state has a ten-year rule. No fixed length of cohabitation creates a marriage anywhere in the country. The myth likely survives because people conflate living together with the legal test, but duration by itself never does it. A couple who has shared a home for thirty years without ever agreeing to be married and without presenting themselves as spouses is not married.
The reverse is also true. In a state that recognizes common law marriage, a couple who satisfies the elements could be married after a single day. The question is whether the requirements are met, not how long the clock has run.
Which States Still Allow It
Most do not. Roughly eight to ten states and the District of Columbia currently permit couples to form one, including Colorado, Iowa, Kansas, Montana, New Hampshire, Oklahoma, Rhode Island, Texas, and Utah. Each has its own rules. Colorado and Kansas require both parties to be at least 18. New Hampshire only recognizes common law marriage for inheritance purposes, and only after three years of cohabitation ending in death.2National Conference of State Legislatures. Common Law Marriage by State
Several states used to allow it and no longer do, though marriages validly formed before the cutoff still count. Georgia stopped recognizing new ones after January 1, 1997. Pennsylvania’s cutoff was January 1, 2005. Alabama ended new common law marriages in 2017.2National Conference of State Legislatures. Common Law Marriage by State
If you live in a state that does not recognize common law marriage, no amount of cohabitation or shared finances will create one. You would need a license and a ceremony.
Proving It When It Matters
There is no certificate issued at the start, so the question of whether a common law marriage exists usually surfaces during a dispute: a divorce, an inheritance, a benefits claim. The person asserting the marriage has to prove it. Two kinds of evidence do the work.
Documents
Written records carry real weight. Joint bank statements, deeds and mortgages in both names, tax returns filed as married, insurance policies naming a partner as spouse, employment benefit forms doing the same. The more of these that exist, the stronger the case.
Witnesses
Friends, family, neighbors, and coworkers can describe how the couple actually behaved: whether they used the same last name, called each other spouses, and were generally known as married in their community. Shared holiday cards, public introductions, and similar conduct all count.
Formal Declaration
Some states let couples file a declaration of informal marriage with a county clerk, creating an official record from the start. It is not required, but it makes proof vastly easier later. Reconstructing evidence years after the fact is where most claims collapse.
What Rights Come With It
Once established, a common law marriage is a marriage. Courts do not treat it as a lesser version. The rights and obligations are the same.
Property and Inheritance
Property acquired during the marriage is marital property, divided under the same equitable distribution or community property rules that apply to any divorce. A surviving common law spouse inherits the same way any surviving spouse does when a partner dies without a will. Without establishing the marriage, the survivor could be treated as a legal stranger to the deceased’s estate.
Spousal Support
Courts can award alimony in a common law divorce using the same factors they use in any other: length of the marriage, earning capacity, financial need.
Children
Children born during a common law marriage get the same presumption of parentage that applies in a ceremonial marriage. Custody, visitation, and child support follow the same rules. Courts focus on the child’s best interests regardless of how the parents’ marriage was formed.
Federal Recognition and Moving to Another State
Federal agencies take a consistent position: if the common law marriage is valid under the law of the state where it was formed, the federal government treats it as a marriage.
The IRS has recognized common law marriages for federal tax purposes for decades. A couple with a valid common law marriage must file as married, either jointly or separately, even if they later move to a state that does not recognize one.3Internal Revenue Service. Rev. Rul. 2013-17 Filing as single in that situation can cause problems.
The Social Security Administration recognizes common law marriages for spousal and survivor benefits when the marriage was valid where formed. Claimants provide signed statements affirming the marriage, and if one spouse has died, the SSA generally asks for the survivor’s statement plus statements from two blood relatives of the deceased, with substitutes allowed when relatives are unavailable. Supporting documents such as joint financial records and insurance beneficiary designations also help.4Social Security Administration. Code of Federal Regulations 404-0726 – Evidence of Common-Law Marriage
USCIS recognizes common law marriages for naturalization and visa purposes when the couple lived in a jurisdiction that permits them and satisfied that jurisdiction’s requirements. The marriage is honored even if the application is filed later from a state that does not recognize one.5U.S. Citizenship and Immigration Services. Marriage and Marital Union for Naturalization
Moving does not usually end the marriage. Most states follow the rule that a marriage valid where celebrated is valid everywhere, so a couple who formed a valid common law marriage in Colorado is generally still married after relocating to California, even though California does not allow new ones.1Social Security Administration. GN 00305.060 – Common-Law Marriage — General The real challenge is proof. Local courts in non-recognizing states may be less familiar with the concept and more skeptical of the claim, which is another reason to document the marriage from the beginning.
You Cannot Walk Away From It
A common law marriage ends the same way any other marriage ends: through divorce. Moving out, agreeing you are done, or telling people you have split up does nothing to the legal status. Without a divorce you remain married. That means you cannot remarry without committing bigamy, and property or debt from the relationship stays subject to marital division rules.
The process looks like any other divorce. One spouse files, and the court handles property, support, and custody. If the other party denies the marriage ever existed, the court holds an evidentiary hearing on that question first.
Delay is costly. Some states presume no marriage existed if neither party files a proceeding to prove it within a certain period after separation. Even without a formal deadline, witnesses move, records disappear, and memories fade. If you think you are in a common law marriage and the relationship is ending, talk to a family law attorney soon.
Not the Same as a Domestic Partnership
A common law marriage is a full marriage, with every right and obligation that status carries, including federal recognition for taxes, Social Security, and immigration. A domestic partnership is a separate status created by specific state or local law. It grants some benefits of marriage but typically not all of them, and federal agencies generally do not recognize it, so a domestic partner cannot claim a partner’s Social Security benefits or file federal taxes as married.
The two also end differently. A common law marriage requires a divorce. A domestic partnership has its own termination procedure under the law that created it.