In a common law marriage, your legal rights are identical to those of any married couple: property division at divorce, spousal support, intestate inheritance, the paternity presumption for children, joint federal tax filing, Social Security survivor benefits, and immigration sponsorship. The condition is real, though. Those rights only attach if your relationship was formed in one of the roughly dozen U.S. jurisdictions that still allow common law marriages, met that jurisdiction’s requirements, and can be proven when challenged. Living together — even for decades — creates no spousal rights on its own.
What a Recognized Common Law Marriage Actually Gives You
Once a common law marriage is recognized, it is a marriage. Not a lesser version, not a partial status. Every spousal right that comes with a ceremonial wedding comes with this one too.
Property Division and Spousal Support
If the relationship ends, assets and debts acquired during the marriage are divided under the same rules the court applies to any divorcing couple in that jurisdiction, whether that means community property or equitable distribution. You don’t have to prove “contributions” beyond what any other spouse would. The court treats the marriage as having existed from the moment it was established.
Spousal support follows the same framework. A judge can order alimony based on the length of the marriage, each person’s earning capacity, the standard of living during the relationship, and the financial impact of the separation.
Inheritance
A recognized common law spouse inherits under state intestacy laws exactly as any surviving spouse would. If your partner dies without a will, you take the spousal share. The practical catch is proof: your rights exist, but you may have to establish the marriage in probate court before you can exercise them, particularly if other relatives contest it.
Children
Children born during a recognized common law marriage receive the same legal presumption of paternity that applies in any marriage. The husband is presumed to be the legal father, which matters for custody, child support, insurance eligibility, and inheritance.
Federal Taxes
The IRS lets common law spouses file jointly as “Married Filing Jointly,” provided the marriage is valid under the laws of the state where you live or where the marriage began, and it hasn’t been dissolved. Joint filing is available on the federal return even if your current state doesn’t recognize new common law marriages, as long as the marriage was validly formed somewhere that does. Both spouses on a joint return are responsible for all tax owed, even if only one earned income.1IRS. Filing Status
Social Security
A common law spouse can qualify for Social Security survivor and spousal benefits on the same terms as any other spouse. The Social Security Administration will ask for signed statements from both spouses (or the surviving spouse) and from blood relatives who can explain why they understood the couple to be married.2Social Security Administration. 404.726 Evidence of Common-Law Marriage
Immigration
USCIS recognizes a common law marriage for immigration purposes if it was valid where it formed. A U.S. citizen or permanent resident in a valid common law marriage can petition for a spouse the same way any married person could, and the agency will evaluate affidavits, joint tax returns, shared financial accounts, and documents reflecting a shared life.3USCIS. Chapter 6 – Spouses
Health Insurance and Federally Backed Mortgages
Employers that offer spousal health coverage generally must extend it to a recognized common law spouse on the same terms as any other spouse, though some insurers want an affidavit or supporting documentation first. For FHA-backed loans, a common law spouse is treated as a spouse for co-borrower purposes.4U.S. Department of Housing and Urban Development. What Are the Guidelines for Co-Borrowers and Co-Signers
Whether You Actually Have a Common Law Marriage
None of those rights activate without a valid marriage behind them. Three elements must exist at the same time: both people mutually agree to be married, they live together, and they hold themselves out to the world as a married couple.5Cornell Law School LII. Common Law Marriage Cohabitation on its own is never enough.
The agreement piece is where most disputes land, because it rarely comes with written proof. Courts look at circumstantial evidence: joint tax returns, a shared surname, how you referred to each other when enrolling children in school, signing a lease, or checking into a hotel, and whether friends and family understood you to be married.3USCIS. Chapter 6 – Spouses A private sense of commitment that never surfaces publicly doesn’t satisfy this element.
“Holding out” is the public-facing piece. It means consistently presenting yourselves as married — not just occasionally using the word “husband” or “wife.” If your employer records, insurance beneficiaries, and bank accounts all list you as single, the holding-out element becomes much harder to establish.
The Seven-Year Rule Doesn’t Exist
No U.S. jurisdiction requires seven years of cohabitation, or any specific number of years, to create a common law marriage. This misconception cuts both ways. Some couples assume they’re automatically married after enough time, when they have no legal relationship at all. Others assume they’re safe from legal obligations because they haven’t hit a threshold, when their conduct may have already created a recognized marriage. A common law marriage can form fairly quickly if all three elements are present. Time spent together is useful evidence, not a separate requirement.
Where These Rights Exist
Only about a dozen U.S. jurisdictions currently allow new common law marriages to form, including the District of Columbia and a handful of states that recognize them by statute or case law. Most states have abolished the doctrine, though many still honor common law marriages that were validly created before a cutoff date.6Cornell Law School LII. Common Law Marriage Each recognizing jurisdiction has its own specifics. Some require both parties to be at least 18. One limits recognition to inheritance situations after three years of cohabitation ending in death. Checking your state’s actual rule matters.
If you form a valid common law marriage in a recognizing jurisdiction and then move, the marriage travels with you. The Full Faith and Credit Clause generally requires other states to honor a marriage validly formed elsewhere.6Cornell Law School LII. Common Law Marriage A couple who established their marriage in a recognizing state and relocated should still be treated as legally married in the new state for property, tax, and divorce purposes.
Proving the Marriage When It Matters
Because there’s no license or certificate, every right you hold rests on evidence you can produce. Agencies and courts look at the same core question from different angles: can you show the agreement, the cohabitation, and the holding out?
Documentary evidence that strengthens a claim includes:
- Joint federal tax returns filed as “Married Filing Jointly” — among the strongest proof available.
- Mortgage documents, deeds, bank statements, and leases showing both names at a shared address.
- Insurance policies and retirement account designations naming the other person as spouse or primary beneficiary.
- Government identification reflecting a shared surname.
- Sworn affidavits from the couple, friends, and family describing the relationship and how the community understood it.
Gather and keep these records while the relationship is going well. Proving a common law marriage after a partner dies or during a contentious separation is far harder without a paper trail already in place. When a common law spouse dies, disputes from other family members are common, especially where significant assets are involved, and the surviving partner may need to establish the marriage in probate before receiving any inheritance.
Ending a Common Law Marriage
There is no such thing as a common law divorce. Because this is a real marriage, ending it requires a real divorce: a petition filed with the court, property divided, support resolved, custody addressed if children are involved. The process is identical to dissolving a ceremonial marriage.
Couples who never had a wedding sometimes assume they can just move out and move on. If the relationship met the criteria, walking away without a formal divorce leaves you legally married, unable to remarry, and exposed to property and support claims that can resurface years later. Filing fees for a divorce petition vary by jurisdiction but typically fall in the $200 to $400 range, not counting attorney’s fees or additional court costs.
If Your State Doesn’t Recognize Common Law Marriage
For most Americans, this doctrine isn’t available. In a state that has abolished it, no amount of time living together, sharing expenses, or using spousal language creates a legal marriage. You remain legally single. That means no automatic right to your partner’s property, no inheritance if they die intestate, no standing to seek spousal support, and no eligibility for spousal benefits through Social Security or your partner’s employer.
If you’re in that situation and want legal protection for each other, build it deliberately:
- Write wills that name each other, and update beneficiary designations on retirement accounts and insurance policies. Without a will, intestacy laws give an unmarried partner nothing.
- Sign healthcare and financial powers of attorney so your partner can make decisions if you’re incapacitated. Without these, hospitals and banks turn to your legal next of kin, who isn’t your partner.
- Put a cohabitation or property agreement in writing to govern how assets and expenses are shared, and how they’ll be divided if you separate.
- Look into domestic partnership or civil union registration if your jurisdiction offers it. These provide a subset of spousal rights but typically don’t carry the full legal weight of marriage and aren’t recognized by all federal agencies.