What Is Common Law Marriage? Definition, States & Requirements

What Is Common Law Marriage?

A common law marriage—sometimes called an "informal marriage," which is Texas's official legal term—is one that is formed through a couple's actions and intentions rather than through a license and ceremony. While a traditional ceremonial marriage is documented through a state-issued marriage license, a common law marriage is implied by the couple's conduct.

At the heart of common law marriage is the concept of "holding out," meaning the couple presents themselves to the world as married. This might include introducing each other as "my husband" or "my wife," using a shared last name, or listing each other as a spouse on official documents. Courts look at the totality of the relationship to determine whether a valid common law marriage exists.

Some states also recognize what is known as the putative spouse doctrine, which can extend certain marital protections to a partner who genuinely believed they were legally married, even if the marriage turns out to be invalid for some reason, such as a prior undissolved marriage.

Common law marriage is a recognized legal status, not a lesser or informal arrangement. If your state recognizes your common law marriage, you are legally married under state law with the same rights and obligations as any other married couple.

The 7-Year Myth - Definitively Debunked

No U.S. state requires couples to live together for seven years to be considered common law married. This myth is one of the most widespread misconceptions in family law, but it has no legal basis in any current state statute.

Why does the myth persist? The origin likely comes from a misunderstanding of older laws or confusion with rules in other countries. Some people may also conflate the idea that courts look at the length of a relationship as one piece of evidence with the idea that length alone creates a marriage. It doesn't.

Are you married after living together for seven years? No. Cohabitation for any period of time—seven years, fifteen years, or more—does not make you legally married in any U.S. state.

So how long do you have to live together to be common law married? There is no universal answer because duration alone never qualifies a couple. Whether your state recognizes a common law marriage depends on meeting that state's specific legal requirements, which go well beyond how long you have shared an address. Two or three years of cohabitation, combined with the other required elements, may be sufficient in some states, but the time period is not the determining factor.

The determining factors are covered in the next section.

Common Law Marriage Requirements

While requirements vary by state, certain elements are widely recognized across the states that allow common law marriage.

1. Legal eligibility to marry - Both partners must be legally eligible to marry. This means neither person can be currently married to someone else, both must be of legal age, and the relationship cannot be one prohibited by law (such as close relatives).

2. Cohabitation - The couple must live together. While a specific duration is rarely mandated, cohabitation is a necessary condition. Courts want to see that the couple has established a shared domestic life.

3. Holding out as married - This is often the most critical requirement. The couple must present themselves publicly as married. Evidence of this includes using a spouse's last name, introducing each other as husband or wife, listing each other as a spouse on insurance or tax forms, filing joint federal tax returns, and making joint financial commitments like shared bank accounts or a joint mortgage.

4. Mutual intent to be married - Both partners must genuinely intend to be married, not just to live together. Courts have been clear that you cannot accidentally enter into a common law marriage. There must be an actual agreement to be married, even if that agreement is demonstrated through conduct rather than written or spoken words.

Specific requirements vary by state—check your state's specific rules before assuming you qualify.

Which States Recognize Common Law Marriage?

Only a small number of states still recognize common law marriage for new relationships. As of this writing, those states are:

Colorado, Iowa, Kansas, Montana, Oklahoma, Rhode Island, South Carolina, Texas, Utah, and the District of Columbia.

Several other states—including Alabama, Georgia, Ohio, and Pennsylvania—recognized common law marriage in the past but have since abolished it for relationships formed after a specific date. If you believe your common law marriage was formed while one of these states still allowed it, that relationship may still be legally valid.

All U.S. states will recognize a validly formed common law marriage from another state, even if they don't allow new common law marriages to be formed within their own borders.

For a full state-by-state breakdown, see our guide: What States Allow Common Law Marriage?

Rights of Common Law Spouses

If your state recognizes your common law marriage, you generally have the same legal rights as formally married spouses. These include the following:

Inheritance rights: If your partner dies without a will, you may be entitled to inherit as a legal spouse under your state's intestate succession laws (the laws that govern who inherits when there is no will).

Health insurance and benefits: Many employers and insurers extend spousal benefits to legally recognized spouses, including common law spouses.

Hospital visitation: As a legal spouse, you have the same rights to visit a hospitalized partner and, in some cases, to make medical decisions on their behalf.

Tax filing: The IRS recognizes validly formed common law marriages. You can file joint federal income tax returns just as formally married couples do.

Social Security survivor benefits: A surviving common law spouse may be eligible for Social Security survivor benefits if the marriage is legally recognized.

Property rights: Upon separation or the death of a partner, property rights are determined under the same rules that apply to formally married couples in your state, including any prenuptial or postnuptial agreements the couple may have in place. A prenuptial agreement, signed before the marriage is established, or a postnuptial agreement, entered into after, can define how property and assets are divided in ways that differ from your state's default rules. Without such an agreement, state law governs who has a legal claim to shared property, a home, or other assets. 

Child custody: Common law married parents have the same parental rights and custody considerations as formally married parents.

It is highly recommended to consult with a family law attorney if you believe you are or were in a common law marriage and need clarity on how these rights apply to your specific situation, as each state has its own requirements and interpretations.

How to Prove Common Law Marriage

If a common law marriage is ever questioned—by an employer, an insurance company, a government agency, or a court—you will need evidence to establish that it existed. Courts and agencies typically look for documentation showing that you held yourselves out as married and intended to be married. Useful evidence includes the following:

• Joint tax returns filed as married filing jointly
• Joint lease agreements or mortgage documents listing both partners
• Joint bank accounts or credit accounts
• Beneficiary designations naming the other partner as a spouse
• Use of a shared last name on official documents
• Witness testimony from friends, family, or co-workers who can attest to the relationship

One of the most effective steps a couple can take is to sign an affidavit of marriage: a legal document in which both partners swear under oath that they are married to one another. This affidavit can serve as formal evidence of the relationship for legal and administrative purposes and helps prevent disputes about the marriage's validity.

Ending a Common Law Marriage

A common misconception is that common law marriages can simply be dissolved by separating. That is not the case.

In every state that recognizes common law marriage, ending that marriage requires a formal divorce proceeding—the same legal process required to dissolve a ceremonial marriage. The marriage exists as a recognized legal status, and legal statuses must be formally terminated.

Separation alone does not end the marriage. Property division, debt obligations, and spousal support considerations all apply in the same way they would in any divorce. If you believe you are in a common law marriage and are considering separation, consulting with a family law attorney is strongly recommended before taking any steps that could affect your legal rights.

Frequently Asked Questions

Is there a 7-year common law marriage rule?

No. This is a myth with no basis in any current U.S. state law. No state recognizes common law marriage based on living together for a set number of years. Cohabitation alone—regardless of duration—does not create a marriage. You must meet your state's specific legal requirements, which typically include mutual intent to be married and publicly presenting as a married couple.

What states have common law marriage?

As of this writing, common law marriage is recognized in Colorado, Iowa, Kansas, Montana, Oklahoma, Rhode Island, South Carolina, Texas, Utah, and the District of Columbia. Several other states recognized it historically but no longer allow new common law marriages to be formed. All states will recognize a valid common law marriage formed in a state that permits it.

What are the requirements for common law marriage?

While requirements vary by state, the most commonly required elements are: legal eligibility to marry, cohabitation, publicly presenting as a married couple (known as "holding out"), and mutual intent to be married. Time lived together is typically considered evidence, not a requirement unto itself.

Does common law marriage give you the same rights as legal marriage?

Yes—in states that recognize it. A valid common law marriage carries the same legal weight as a ceremonial marriage. This includes property rights, inheritance rights, tax filing status, Social Security survivor benefits, and more. The IRS also recognizes valid common law marriages for federal tax purposes.

How do you prove you are common law married?

The strongest evidence includes joint tax returns filed as married, joint lease or mortgage agreements, joint bank accounts, beneficiary designations listing the other person as a spouse, shared last name usage, and witness testimony. An affidavit of marriage—a sworn statement by both partners affirming the marriage—is one of the most reliable ways to formally document a common law marriage.

Do you need a divorce to end a common law marriage?

Yes. In every state that recognizes common law marriage, ending the marriage requires a formal legal divorce—the same process used to dissolve a ceremonial marriage. Simply separating or moving apart does not legally dissolve the relationship. Property division, debt obligations, and support considerations all apply in the same way they would in any divorce proceeding.