No, New Jersey does not have common law marriage. The state abolished it effective December 1, 1939, and since then no couple has been able to create a marriage in New Jersey by living together, sharing finances, or presenting themselves publicly as spouses.1Justia Law. New Jersey Code 37:1-10 – Common Law and Other Marriages Without License; Validity A marriage in New Jersey requires a license and a ceremony performed by an authorized officiant. Anything short of that leaves you legally single, no matter how long the relationship has lasted.
That matters because New Jersey gives unmarried partners almost no automatic legal protection. If you want your partner treated as more than a stranger under state law, you have to build that protection yourself through written agreements and estate documents.
The 1939 Cutoff and What It Means Today
New Jersey’s marriage statute is direct: any marriage entered into on or after December 1, 1939 without a license and an authorized ceremony is “absolutely void.”1Justia Law. New Jersey Code 37:1-10 – Common Law and Other Marriages Without License; Validity Before that date, cohabitation and mutual agreement could create a marriage. The legislature closed that door more than eight decades ago and has not reopened it.
The length of the relationship does not change the analysis. Twenty years of living together, joint bank accounts, shared children, calling each other husband or wife — none of it produces a marriage under New Jersey law. Every consequence that flows from legal marital status, from inheritance to tax filing to hospital access, treats you as unmarried.
When New Jersey Recognizes a Common Law Marriage Formed Elsewhere
There is one narrow exception. If you validly formed a common law marriage in a state that still allows them, New Jersey courts will generally treat that marriage as valid after you move here, under the Full Faith and Credit Clause of the U.S. Constitution. A handful of states still permit them, including Colorado, Iowa, Kansas, Montana, Texas, and Utah.2National Conference of State Legislatures. Common Law Marriage by State
The catch is that the marriage must actually have satisfied the originating state’s requirements. Simply cohabiting somewhere else for a while is not enough. Texas, for example, requires either a filed Declaration of Informal Marriage or proof that the couple agreed to be married, lived together as spouses, and represented themselves as married to others. Colorado requires both partners to be at least 18. If someone challenges the marriage in a New Jersey divorce, inheritance dispute, or benefits application, the burden of proving it falls on you.
The evidence courts and agencies usually want includes joint tax returns filed as married, shared bank accounts, property held in both names, signed affidavits, and testimony from people who knew you as spouses. The Social Security Administration takes a similar approach when evaluating claims, relying on signed statements from the couple and blood relatives.3Social Security Administration. Evidence of Common-Law Marriage Gather this material before a dispute, not after.
What Unmarried Couples Actually Lose
This is where most people underestimate the risk of assuming long-term cohabitation carries any legal weight in New Jersey.
Inheritance
If your partner dies without a will, New Jersey’s intestate succession statute distributes assets first to a surviving spouse, civil union partner, or registered domestic partner, then to descendants and parents.4Justia Law. New Jersey Code 3B:5-3 – Intestate Share of Surviving Spouse An unmarried partner who is not a registered domestic partner gets nothing. If the home you shared was titled only in your partner’s name and there was no will, their legal heirs inherit it. You could be forced to leave.
Medical Decisions
Without a healthcare power of attorney, hospitals and doctors may refuse to let your partner make decisions for you or even receive information about your condition. If you are incapacitated with no advance directive naming your partner, a court can appoint a guardian, and that guardian is typically a blood relative rather than the person you have lived with for decades.
Property If the Relationship Ends
Married couples divide marital property through equitable distribution when they divorce. Unmarried couples get none of that. Each partner keeps only what is titled in their name. Years of paying toward your partner’s mortgage, funding home improvements, or supporting the household while they built a career create no legal claim to their property in the absence of a written agreement.
Domestic Partnership Is an Option, but Only for Couples 62 and Older
New Jersey’s Domestic Partnership Act took effect on July 10, 2004. After the Civil Union Act arrived in 2007 and same-sex marriage became legal nationwide in 2015, eligibility narrowed. Today, both partners must be 62 or older to register a domestic partnership, whether the couple is same-sex or opposite-sex.5Department of Health. Domestic Partnership in New Jersey – FAQs
Registered domestic partners gain healthcare decision-making authority, hospital visitation rights, certain state tax benefits, and access to health coverage if one partner is a public employee.6NJ Legislature. An Act Establishing the Rights and Responsibilities of Domestic Partners They are also recognized under New Jersey’s intestate succession law, so a surviving domestic partner inherits the way a surviving spouse would.4Justia Law. New Jersey Code 3B:5-3 – Intestate Share of Surviving Spouse
Domestic partnerships do not carry the full range of marital rights. Federal benefits like Social Security spousal coverage, immigration sponsorship, and joint federal tax filing are not available. For couples under 62, this route is not open at all, and marriage is the only way to access the full set of protections.
Cohabitation Agreements: The Main Tool for Unmarried Partners
A cohabitation agreement is a written contract between unmarried partners covering who owns what, who pays for what, and what happens if the relationship ends. It is the closest equivalent to a prenuptial agreement for people who are not married, and it is the most effective tool for filling the gap New Jersey law leaves.
A solid agreement typically addresses shared expenses, how property acquired during the relationship will be divided, what happens to a jointly owned home, and any financial support obligations at the end of the relationship. It can also touch on responsibilities toward children, though New Jersey courts always retain authority over custody and child support regardless of what a private agreement says.
New Jersey courts enforce these agreements under standard contract principles. Both partners must sign voluntarily, the terms cannot violate public policy, and both sides should disclose their finances fully before signing. Courts look for signs of pressure or hidden assets. Each partner having independent counsel review the agreement before signing is the strongest defense against a later challenge.
How You Title Property Matters Too
Two common ways unmarried couples hold real estate are joint tenancy with right of survivorship and tenancy in common. Under joint tenancy, if one owner dies the other automatically inherits their share and probate is bypassed. Under tenancy in common, a deceased owner’s share passes through their will, or through intestate succession if there is no will. An unmarried partner holding property as tenants in common with no will naming them can lose their partner’s share to the partner’s family. The choice of ownership form is one of the most commonly skipped steps.
Palimony Requires a Written Promise
Palimony is financial support one unmarried partner seeks from the other after a long-term relationship ends. It is not alimony and it is not based on marriage. It is based on a promise, and in New Jersey that promise must be in writing.
A 2010 amendment to New Jersey’s Statute of Frauds, codified at N.J.S.A. 25:1-5(h), makes any promise of financial support during or after a non-marital relationship unenforceable unless it is written down and signed by the person making it. Before 2010, courts could sometimes enforce oral promises when there was enough evidence. That is no longer possible. In 2022, the New Jersey Supreme Court in Moynihan v. Lynch struck down the amendment’s independent-counsel requirement but left the writing requirement intact.7Justia Case Law. Moynihan v. Lynch
To succeed on a palimony claim you need to show the written promise existed and that you relied on it to your detriment. Giving up a career, relocating, or turning down opportunities in reliance on the promise can all strengthen the case. Courts weigh the length of the relationship, the financial disparity between partners, and the specifics of what was promised. A verbal promise, however credible, is not enforceable.
Documents Every Unmarried Couple in New Jersey Should Have
Because state law creates almost no default protections for unmarried partners, a small set of documents does most of the practical work marriage would otherwise do.
- A will or living trust. The only reliable way to make sure your partner inherits anything. Without one, intestate succession sends the estate to legal relatives.4Justia Law. New Jersey Code 3B:5-3 – Intestate Share of Surviving Spouse
- Healthcare power of attorney. Gives your partner the right to make medical decisions and receive information if you cannot speak for yourself.
- Durable financial power of attorney. Authorizes your partner to manage finances and property during any period of incapacity. Without it, a court appoints someone, typically a relative.
- Beneficiary designations. Life insurance, retirement accounts, and payable-on-death bank accounts pass directly to the named beneficiary, bypassing probate and intestate succession. Naming your partner is one of the simplest protections available.
- Cohabitation agreement. Governs property division and any financial obligations if the relationship ends.
The combined cost of these documents is small compared to a probate fight or guardianship proceeding. Couples who assume long-term cohabitation carries some implied legal status in New Jersey are making the single most expensive mistake in this area of law.