Common law marriage is currently recognized for new unions in only eight states—Colorado, Iowa, Kansas, Montana, Oklahoma, Rhode Island, Texas, and Utah—as well as the District of Columbia. New Hampshire recognizes informal unions solely for probate and estate distribution after a partner dies. Living together for a set duration never creates a common law marriage on its own; both partners must also have legal capacity, mutually agree to be married, and openly present themselves as spouses to their community.

Navigating a long-term relationship requires clear expectations, especially when personal commitments intersect with state legal codes. Misunderstandings about informal marriage can leave either partner vulnerable during major life transitions, property purchases, or unexpected separations.

Jurisdictions That Permit and Recognize Common Law Marriage

In the United States, marital laws are established at the state level rather than federally, which creates significant variation across borders. Today, only a small minority of jurisdictions allow unmarried couples to establish a legally binding marriage without obtaining a state license or holding a formal ceremony. In these select regions, a valid common law marriage carries the exact same legal weight, protections, and financial obligations as a traditional ceremonial marriage. If a court confirms the existence of an informal union, neither partner can simply walk away without undergoing standard divorce proceedings.

Beyond the states that currently permit new unions to form, several other states maintain grandfathering provisions. In states that abolished common law marriage in past decades, unions created prior to the abolition date remain fully valid under the law. Additionally, every non-common law state must recognize a validly formed common law marriage from another jurisdiction under the Full Faith and Credit Clause of the United States Constitution. This means a couple whose informal union became legally binding in Colorado remains married if they relocate to California, New York, or Florida.

  • States currently permitting new common law marriages: Colorado, Iowa, Kansas, Montana, Oklahoma, Rhode Island, Texas, and Utah (plus Washington, D.C.).
  • States recognizing informal marriage solely for inheritance or probate: New Hampshire.
  • States with grandfathered recognition for unions formed before specific dates: Alabama (before 2017), South Carolina (before 2019), Pennsylvania (before 2005), Ohio (before 1991), Georgia (before 1997), and Indiana (before 1958).

A common point of confusion among long-term partners is the belief that living under the same roof for a predetermined period automatically makes them spouses. In reality, time alone does not establish a common law marriage in any American jurisdiction. State statutes and case law require specific, demonstrable evidence that both individuals intended to enter a binding marital relationship. Without mutual consent and corresponding behavior, cohabitation remains legally distinct from marriage regardless of whether a couple has lived together for one year or two decades.

To establish a valid common law marriage, courts generally evaluate three universal requirements alongside specific state statutes. First, both individuals must possess the legal capacity to marry, meaning they are of legal age, mentally competent, and not currently married to anyone else. Second, there must be a present, mutual agreement to be husband and wife or spouses, rather than a vague intention to marry in the future. Third, the couple must cohabitate and engage in public behavior known as holding out, which demonstrates to friends, family, financial institutions, and the community that they consider themselves married.

  • Legal capacity: Meeting statutory age requirements and ensuring neither person has an unresolved prior marriage.
  • Present intent: A clear, shared agreement between both partners to be married immediately, rather than an engagement or plan to marry later.
  • Public representation: Consistently presenting as married by filing joint tax returns, sharing a surname, wearing wedding bands, or listing one another as a spouse on official records.
  • Continuous cohabitation: Residing together in a state that permits informal unions during the period the agreement was made.

Dissecting the Seven-Year Myth and Public Representation

The popular belief that cohabitating for seven years transforms a relationship into a common law marriage is an enduring cultural myth with no statutory foundation in US law. Courts do not monitor clocks or lease agreements to determine marital status. A couple could share a home for thirty years with separate finances and zero intention of being married, and no court would find an informal union. Conversely, a couple living together in Texas or Kansas for six months who sign a joint mortgage as spouses, file joint federal tax returns, and introduce each other as husband or wife could easily meet the legal standard.

The evidentiary linchpin in disputed cases almost always centers on public representation. When one partner claims a common law marriage exists and the other denies it, family law judges look for objective proof of how the couple behaved in the community. Filing federal taxes as 'Married Filing Jointly' carries tremendous evidentiary weight, as signing a tax return constitutes a sworn declaration under penalty of perjury. Other significant factors include introducing the partner as a spouse at social gatherings, listing them as a spouse on health insurance policies, naming them as a beneficiary, and sharing joint bank accounts under a unified household structure.

Financial and Property Rights When an Informal Union Dissolves

When an informal union ends, partners often face severe financial surprises based on how the law categorizes their relationship. If a common law marriage is legally proven to exist, the couple cannot simply divide their possessions casually and walk away. There is no such thing as a common law divorce. The dissolution requires a formal decree of divorce issued by a state court, during which the court applies standard statutory guidelines for property division, alimony, debt allocation, and child custody.

In community property states like Texas, assets acquired during the informal marriage are presumed to be owned equally by both spouses, regardless of whose name appears on the title or paycheck. In equitable distribution states like Colorado or Iowa, the court divides marital property fairly based on each party's financial and non-financial contributions. If the court determines that no common law marriage was ever established, the breakup is treated as a separation of unmarried cohabitants. In that scenario, property belongs strictly to the individual whose name is on the title or contract, and neither party has a statutory right to spousal maintenance, even if one partner sacrificed their career to support the home.

Navigating Interstate Relocation and Jurisdictional Discrepancies

Modern professional mobility often creates complex jurisdictional conflicts for couples who formed an informal union in one state and later relocated to another. Under the United States Constitution's Full Faith and Credit Clause, a state must give legal effect to the acts, records, and judicial proceedings of other states. Consequently, if a couple fulfills the statutory requirements to establish a common law marriage in Montana and subsequently moves to a state that does not permit informal unions, such as Illinois or North Carolina, their marriage remains legally binding.

However, proving that the marriage was established before the move can become an administrative hurdle in non-common law states. When interacting with hospitals, insurance carriers, estate administrators, or state courts in a non-recognition state, the couple lacks a state-issued marriage certificate. If the relationship ends or one partner passes away without a will, the surviving partner must often initiate court proceedings in the new state to prove that a valid common law marriage was established in the previous state. This process requires gathering historical evidence from the prior state of residence, including affidavits, shared financial records, and tax documents from that period.

Proactive Strategies to Protect Assets and Clarify Intentions

Uncertainty around relationship status can lead to costly legal disputes, emotional distress, and unexpected financial losses. For partners who choose to live together without intending to marry, the most effective safeguard is proactive documentation. Relying on unspoken understandings or informal verbal agreements often fails when circumstances change or when large assets like real estate are acquired. Taking deliberate steps to define the legal boundaries of your relationship ensures that both individuals retain self-respect, clarity, and control over their financial futures.

One practical approach is drafting a formal Cohabitation Agreement with the assistance of independent legal counsel. This binding contract outlines exactly how shared expenses are handled, how joint and separate property will be treated, and explicit confirmation that neither party intends to enter a common law marriage. Conversely, couples residing in common law states who genuinely wish to be married without a ceremony can file an official Declaration of Informal Marriage where permitted, such as with a county clerk in Texas. Establishing this clear written record eliminates ambiguity for insurance providers, employers, tax authorities, and probate courts.

  • Draft a formal cohabitation agreement explicitly stating whether the relationship is intended to be a marital union or non-marital cohabitation.
  • Maintain clear titling on separate assets, retirement funds, and real estate purchases.
  • Establish separate estate planning documents, including a durable power of attorney, health care proxy, and clear last will and testament.
  • Ensure consistency across tax filings, insurance policies, and public representations to avoid creating conflicting legal evidence.

Illustrative Scenarios

Resolving Conflicting Assumptions During an Interstate Move

Mark and Jason shared an apartment in Denver, Colorado, for four years. While living there, they casually referred to each other as partners and husbands among close friends, though they kept separate bank accounts and filed individual tax returns. When Mark received a job offer in Chicago, the couple prepared to purchase a townhome together. During the mortgage application process, the lender asked for proof of marriage to combine their qualification profiles. Jason assumed their years in Colorado meant they were legally married under common law, whereas Mark viewed their relationship as committed cohabitation without legal ties. Realizing the legal exposure and potential misunderstanding, they paused the application and consulted a family law attorney. Together, they drafted a structured cohabitation and property agreement before closing on the property, establishing clear boundaries without ambiguity.

Key point: Never assume cohabitation automatically conveys legal status; explicit agreements protect both partners when financial stakes increase.

Addressing Tax Declarations and Legal Status in Texas

After moving into a home in Austin, Brenda and Carlos lived together for five years. To save money on health insurance, Carlos listed Brenda as his spouse on his employer's benefits portal, and they subsequently filed their federal income taxes under the Married Filing Jointly status for two consecutive years. When the relationship deteriorated, Carlos decided to move out and purchase a separate condominium, assuming they were simply an unmarried couple splitting up. Brenda's attorney informed him that their sworn joint tax returns and shared insurance representations constituted clear evidence of a common law marriage under Texas law, meaning the home equity and retirement savings accumulated during those years were subject to community property division. Rather than fighting an expensive court battle, Carlos worked through formal mediation to negotiate a fair property settlement.

Key point: Signing official documents or tax returns as a married couple creates legally binding obligations that cannot be casually undone.

Frequently asked questions

Does living together for seven years automatically make you common law married?

No. There is no state in the country where cohabitating for a specific number of years automatically creates a common law marriage. To be legally married under common law, both partners must also have the legal capacity to marry, mutually agree to be married, and openly represent themselves to the public as spouses.

Can you end a common law marriage without going to court?

No. Once a common law marriage is legally established, there is no such concept as a common law divorce. The relationship must be dissolved through the standard state divorce process to divide property, resolve financial claims, and restore each individual's legal status to single.

What happens if a common law married couple moves to a state that bans informal unions?

The marriage remains completely valid. Under the Full Faith and Credit Clause of the US Constitution, all states must recognize a legal marriage validly created in another jurisdiction, meaning non-common law states must treat the couple as legally married for all statutory purposes.

How can an unmarried couple live together without accidentally establishing a common law marriage?

Couples can protect themselves by keeping separate tax returns, maintaining individual bank accounts, and avoiding introducing one another as spouses in social or professional settings. Additionally, signing a written cohabitation agreement that explicitly disclaims any marital intent provides decisive legal protection.

Your next step

Review your financial accounts, tax filings, and estate documents with an attorney to ensure your legal relationship status accurately reflects your personal intentions.