Common Law Marriage in New Hampshire: Is It Recognized? (2026)

New Hampshire does not recognize common law marriage for living couples. However, RSA 457:39 creates a narrow posthumous exception: when one partner in a qualifying cohabiting relationship dies, the survivor is deemed to have been legally married to the decedent, if the couple cohabited and mutually acknowledged each other as husband and wife for at least three years prior to the death. The limit the statute imposes is one of timing rather than subject matter. Nothing attaches while both partners are alive, and inheritance and probate are the principal setting in which the deemed marriage matters.

Information last verified on June 2, 2026.

Jurisdiction scope: This article addresses New Hampshire law on common law marriage under RSA 457:39 and related case law. It does not constitute legal advice. For a state-by-state comparison, see Common Law Marriage by State.

Does New Hampshire Recognize Common Law Marriage?

New Hampshire does not recognize common law marriage for living couples. Two people cannot become legally married in New Hampshire simply by living together, presenting themselves as a couple, or calling each other husband and wife. New Hampshire law requires both a marriage license and a solemnization ceremony for a valid marriage to be formed: RSA 457:22 through RSA 457:26 govern the license application and its issuance, and RSA 457:31 lists the officiants who may solemnize a marriage.

The absence of a living-couple common law marriage means that a couple in New Hampshire who has never obtained a marriage license is not legally married, regardless of how long they have lived together, how they refer to each other publicly, or what financial ties they have built. Courts in New Hampshire will not treat such a couple as married for purposes of divorce, alimony, health insurance spousal benefits, tax filing, or any other right or obligation that depends on marital status.

However, New Hampshire is unusual among states that do not recognize living common law marriages. RSA 457:39 provides a specific posthumous recognition rule that can apply after one partner dies. That rule is narrow in both its requirements and its timing, and it is examined in detail in the section below.

The RSA 457:39 Posthumous Inheritance Exception

RSA 457:39 provides that persons "cohabiting and acknowledging each other as husband and wife, and generally reputed to be such, for the period of 3 years, and until the decease of one of them, shall thereafter be deemed to have been legally married." In practice, that means four conditions must be met:

1. The couple cohabited together as husband and wife.
2. They mutually acknowledged each other as husband and wife.
3. They were generally reputed to be husband and wife in the neighborhood or among acquaintances.
4. The cohabitation, mutual acknowledgment, and general repute continued for three years up to the time of the death.

If all four elements are proven, a probate court may recognize the survivor as the decedent's legal spouse. In practice that recognition matters most in the estate: the survivor could inherit from the deceased partner's estate as a spouse would under New Hampshire's intestacy laws, contest a will that failed to account for the spousal relationship, or assert claims tied to the spousal share of the estate.

What RSA 457:39 does not create is a marriage that exists while both partners are alive. The word "thereafter" in the statute marks a point in time, not a subject-matter boundary: the deemed marriage is triggered only by a partner's death, and it then treats the couple as having been married. A couple cannot use RSA 457:39 to file a joint tax return, obtain spousal health insurance coverage, assert a right to alimony after a breakup, or establish any other benefit or obligation that attaches to married status during the couple's lifetime.

What RSA 457:39 Does NOT Cover

The narrow scope of RSA 457:39 means that most of the practical protections that married couples rely on are unavailable to cohabiting couples in New Hampshire during their lifetimes, regardless of how long they have lived together. Specifically, RSA 457:39 does not create:

• Divorce rights. If the relationship ends during the couple's lifetime, there is no marriage to dissolve. One partner cannot seek alimony, equitable distribution of property, or any of the financial protections that New Hampshire divorce law provides to spouses.
• Spousal health or life insurance benefits. Insurers and employers are not required to extend spouse-equivalent benefits to a cohabiting partner under RSA 457:39.
• Tax filing status. The IRS and New Hampshire do not permit a cohabiting couple to file as married absent a valid marriage license.
• Social Security spousal benefits during the couple's joint lifetime. Because nothing under RSA 457:39 attaches before a partner dies, a living couple cannot claim spousal benefits on that basis. Survivor benefits are a different question, and the answer there is often yes. Under 42 U.S.C. 416(h)(1)(A), the Social Security Administration asks whether the courts of the state where the insured worker was domiciled at death would find the couple validly married, and if not, whether the applicant would take the property of a spouse under that state's law of intestate succession. SSA's own program manual, POMS GN 00305.075, lists New Hampshire's three-year rule among the state provisions it recognizes. SSA applies the RSA 457:39 elements itself rather than deferring to a state probate decree, and it has denied claims where the three-year period was not satisfied while both parties were free to marry.
• Hospital visitation or medical decision-making rights. These rights flow from a valid marriage or from a healthcare proxy document, not from RSA 457:39, which cannot help while both partners are living.
• Rights during the couple's lifetime. The statute operates only at and after the moment of death. A living partner cannot invoke RSA 457:39 to establish any right before that point.

How New Hampshire Handles Proof Under RSA 457:39

If a surviving partner seeks to invoke RSA 457:39 in a probate proceeding, they bear the burden of proving each element by a preponderance of the evidence. Courts look at the totality of the circumstances over the three-year period preceding death.

Evidence that New Hampshire probate courts have considered in analogous proceedings includes:

• Joint bank or financial accounts held in both names
• Property deeds or lease agreements listing both parties as co-owners or co-tenants
• Joint federal or state income tax returns filed as married or as qualifying widow/widower
• Shared billing addresses on utility, insurance, or credit accounts
• Affidavits from neighbors, family members, coworkers, or community members who knew the couple as husband and wife in the years before the death
• Statements by the deceased, including correspondence, cards, or social media posts referring to the survivor as a spouse
• Health or life insurance beneficiary designations naming the survivor as a spouse

No single document is conclusive. The court examines the pattern of conduct and reputation over the full three-year window, not merely isolated incidents.

Does New Hampshire Recognize a Common Law Marriage From Another State?

Yes. New Hampshire recognizes a valid common law marriage formed in another state, provided the couple met that state's legal requirements at the time the marriage was created. The basis is a New Hampshire statute directly on point, RSA 457:3, which provides that "every marriage legally contracted outside the state of New Hampshire, which would not be prohibited under RSA 457:2 if contracted in New Hampshire, shall be recognized as valid in this state for all purposes." The Full Faith and Credit Clause is often cited for this proposition, but that clause governs judgments, public acts and records, and a marriage is not a judgment. Interstate marriage recognition rests on statutes like RSA 457:3 and on principles of comity.

Several states continue to allow new common law marriages to be formed as of 2026: Colorado, Iowa, Kansas, Montana, Oklahoma, Rhode Island, Texas (informal marriage under Tex. Fam. Code 2.401), and the District of Columbia. A couple that validly formed a common law marriage in any of those jurisdictions carries that recognized legal marriage with them if they move to New Hampshire.

An out-of-state common law marriage is recognized in New Hampshire for all purposes, including divorce, alimony, inheritance, spousal benefits, and tax status, so long as it would not have been prohibited under RSA 457:2 (which bars marriages between close relatives and marriage to more than one person at a time) had it been contracted here. This is a significant distinction from RSA 457:39, which applies only posthumously to in-state cohabiting couples who never had a formal marriage anywhere.

How a Recognized Marriage Ends in New Hampshire

A valid marriage, whether licensed or recognized as a valid out-of-state common law marriage, ends in New Hampshire only through formal divorce or the death of a spouse. New Hampshire does not recognize informal dissolution of a marriage.

Couples seeking to end a recognized marriage in New Hampshire must file for divorce in the New Hampshire court with divorce jurisdiction. New Hampshire allows no-fault divorce on the ground of irreconcilable differences that have caused the irremediable breakdown of the marriage, under RSA 458:7-a; the fault grounds, such as adultery, extreme cruelty, and abandonment, are listed separately in RSA 458:7. The court has broad authority to divide marital property and award alimony under RSA 458:19.

The 7-year myth: There is no rule in any state that seven years of cohabitation creates a marriage or that seven years of separation dissolves one. The three-year period in RSA 457:39 relates only to the posthumous exception, not to marriage formation. No amount of time living together in New Hampshire creates a common law marriage for living couples.

Practical Protections for Unmarried Couples in New Hampshire

Because New Hampshire does not offer common law marriage rights to living couples, unmarried partners who want legal protections should consider formal legal documents:

• A will that specifically names the partner as a beneficiary, so the RSA 457:39 posthumous exception becomes less critical
• A healthcare proxy (RSA 137-J) designating the partner as agent for medical decisions
• A durable financial power of attorney (RSA 564-E) giving the partner authority over financial matters
• Joint tenancy with right of survivorship on real property, so the surviving partner takes ownership automatically at death
• Beneficiary designations on retirement accounts, life insurance policies, and bank accounts naming the partner directly

Rather than rely on the narrow RSA 457:39 exception, get a free case evaluation from a New Hampshire family law attorney on drafting these documents for you and your partner (attorney advertising).

Legal disclaimer: This page provides general legal information about New Hampshire common law marriage law. It is not legal advice and does not create an attorney-client relationship. Common law marriage issues are fact-specific and can affect significant rights, including inheritance, property, and benefits. Consult a licensed New Hampshire family law or estate planning attorney for advice on your particular situation. Information verified as of June 2, 2026.

Related New Hampshire Laws

• New Hampshire Alimony Laws
• New Hampshire Child Support Laws
• Common Law Marriage by State

Last updated: June 2, 2026.

More New Hampshire Laws

• New Hampshire Alimony Laws
• New Hampshire Divorce Laws

Frequently Asked Questions

Does New Hampshire recognize common law marriage?

New Hampshire does not recognize common law marriage for living couples. RSA 457:39 creates a narrow posthumous exception: when one partner dies, the survivor is deemed to have been legally married to the decedent if the couple cohabited and held themselves out as married for at least three years before the death. The limit is temporal rather than subject-matter, so nothing attaches while both partners are alive. This is not a living-couple common law marriage.

What is the New Hampshire common law marriage inheritance rule?

RSA 457:39 provides that when one partner in a qualifying cohabiting relationship dies, the surviving partner is deemed to have been legally married to the decedent if the couple cohabited, mutually acknowledged each other as husband and wife, and were generally reputed to be married for at least three years prior to the death. The statute is most often applied in probate, but its limit is one of timing rather than subject matter: it operates only after death, not during the couple's lifetime.

Does New Hampshire recognize a common law marriage from another state?

Yes. New Hampshire recognizes a valid common law marriage formed in another state, provided the couple met that state's formation requirements. Under RSA 457:3, every marriage legally contracted outside New Hampshire that would not have been prohibited under RSA 457:2 if contracted here is recognized as valid in this state for all purposes, including divorce, alimony, and inheritance.

How long do you have to live together to be common law married in New Hampshire?

No period of cohabitation creates a common law marriage for living couples in New Hampshire. The three-year period in RSA 457:39 relates only to the posthumous exception, not to marriage formation during the couple's lifetime. The idea that seven years of living together creates a marriage is a myth.

Can I get alimony from a common law marriage in New Hampshire?

No. New Hampshire does not recognize common law marriage for living couples, so there is no marriage to dissolve and no right to alimony when the relationship ends. Alimony under RSA 458:19 is available only in a divorce proceeding, which requires a valid marriage. A couple who never obtained a marriage license in New Hampshire has no access to divorce-based financial protections when they separate.

Can a surviving partner get Social Security survivor benefits under RSA 457:39?

Often yes. Under 42 U.S.C. 416(h)(1)(A), the Social Security Administration decides widow or widower status by looking to the law of the state where the insured worker was domiciled at death, and SSA's program manual (POMS GN 00305.075) lists New Hampshire's three-year rule among the state provisions it recognizes. SSA applies the RSA 457:39 elements itself rather than accepting a state probate decree as binding, and both parties must have been free to marry throughout the three-year period. What RSA 457:39 cannot provide is spousal benefits while both partners are alive, because the statute operates only after a death.

How do I protect my rights as an unmarried partner in New Hampshire?

Because RSA 457:39 applies only after death, living unmarried partners should use formal legal documents: a will naming the partner as beneficiary, a healthcare proxy under RSA 137-J, a durable power of attorney under RSA 564-E, joint tenancy with right of survivorship on shared property, and direct beneficiary designations on financial accounts and insurance. A New Hampshire estate planning attorney can help structure these documents.

What is the difference between RSA 457:39 and common law marriage?

Traditional common law marriage allows a couple to become legally married during their lifetime without a license, based on mutual agreement and public acknowledgment. RSA 457:39 is different: it operates only after one partner dies, and it requires three years of cohabitation with mutual acknowledgment before the death. Its principal effect is in probate, though the deemed marriage is not by its terms confined to that context. It does not create a marriage while both partners are alive.