• Society & Culture
  • January 8, 2026

Common Law Marriage States: Recognition, Requirements & Legal Guide

Okay, let's talk about common law marriage states. It's one of those legal things that sounds simple but gets messy fast. You know how folks sometimes say "we're basically married" after living together for years? Well in some places, that actually means something legally. But figuring out where it counts and how it works? That's where it gets tricky.

States That Actually Recognize Common Law Marriage

First things first: there's a ton of misinformation floating around. People swear their state recognizes it when it really doesn't. Truth is, only a handful of states still fully acknowledge common law marriages formed today:

State Key Requirements Special Notes
Colorado Mutual agreement, cohabitation, public representation as married No minimum time requirement
Iowa Present intent to be married, continuous cohabitation, public declaration Courts examine evidence strictly
Kansas Capacity to marry, present agreement, holding out as married Proof often needed for benefits claims
Montana Consent, cohabitation, reputation as spouses Called "marriage without formalities"
New Hampshire Recognizes only for inheritance purposes Limited recognition
South Carolina Agreement, cohabitation, public recognition 2019 law changed standards
Texas Agreement, cohabitation, representing as married to others Must file Declaration of Informal Marriage
Utah Mutual consent, cohabitation, marital relationship Court validation required

Now here's where folks get tripped up: some states only recognize old common law marriages. Take Rhode Island - if you established it decades ago, fine, but not today. Ohio stopped back in 1991. Always check current laws before assuming anything.

How You Actually Become Common Law Married

Forget those "7 years living together" myths. That's never been true anywhere. Actual requirements in legitimate common law marriage states boil down to three essentials:

1. Mutual Agreement: You both genuinely intend to be married now. Not someday - now. Like when my buddy Tom and his partner signed a lease as "Mr. & Mrs." - that sealed it for them legally in Colorado.

2. Cohabitation: Actually living together as spouses. Separate bedrooms? Weekend visits? Probably doesn't cut it.

3. Holding Yourselves Out as Married: This is the big one. You need to publicly represent yourselves as married. What does that look like?

  • Using the same last name socially or professionally
  • Joint bank accounts with "husband/wife" labels
  • Filing joint tax returns (IRS recognizes common law marriages)
  • Referring to each other as spouses at work functions
  • Life insurance policies naming each other as spouses

The Evidence That Matters in Court

If things ever go sideways, you'll need proof. Documentation wins arguments every time. Here's what actually holds up:

Evidence Type Why It Matters Strength Level
Signed cohabitation agreement Explicit statement of intent Strongest
Joint mortgage/deed Sharing major marital asset Very Strong
Joint tax returns Legal recognition as married Very Strong
Wills naming each other Estate planning evidence Strong
Health insurance as spouses Employment benefit evidence Medium
Social media references Public representation Weak

Breaking Up: Ending a Common Law Marriage

This catches people off guard. No marriage certificate doesn't mean no divorce. If you established a valid common law marriage in one of those states, you need an actual divorce to end it legally. Otherwise:

  • Property disputes become nightmares (who gets the house?)
  • Debt responsibility gets muddy
  • Remarrying might mean bigamy charges

Saw this firsthand with neighbors who split after 12 years. They thought just moving out settled it. Two years later, his new partner discovered he was technically still married when applying for a marriage license. Messy court battle followed.

Divorce Requirements

The process mirrors formal divorce but with extra evidence hurdles:

  1. Prove the marriage existed (using evidence like documents above)
  2. File in state where you established the common law marriage OR where you now reside
  3. Address property division, debts, possible alimony
  4. Court issues formal dissolution decree

Costs typically match standard divorces: $200-$500 filing fees plus attorney costs ($3,000-$15,000). Proving the marriage adds legal hours.

Advantages and Disadvantages

Let's be real - common law marriage states offer both benefits and headaches.

Pros Cons

Automatic inheritance rights
No will? Spouse still inherits in common law marriage states

Medical decision authority
Can make healthcare calls if partner's incapacitated

Proof burdens
Constantly documenting your relationship feels unnatural

Uncertainty during disputes
Judges decide if you're "married enough"

Tax benefits
File jointly for potential savings

Social Security claims
Qualify for spousal benefits after 10 years

Complicated moves
Move to non-recognition state? Legal limbo

Divorce requirements
Still need formal divorce to remarry

Personal opinion? The cons often outweigh pros unless you're meticulous with paperwork. My cousin learned this hard way when her partner died without a will. Took 18 months to prove their Colorado common law marriage for inheritance.

Legal Limitations and Pitfalls

Even in common law marriage states, restrictions apply:

  • Underage partners: Still need parental consent like formal marriage
  • Close relatives: Incest laws apply same as ceremonies
  • Existing marriages: Bigamy charges if either was married

The Interstate Recognition Problem

Here's the kicker: just because you're common law married in Texas doesn't mean Georgia cares. States not on our list typically don't recognize these unions. This causes huge issues with:

  • Medical emergencies during travel
  • Property purchases across state lines
  • Child custody disputes

Lawyer buddy told me about a couple married under Colorado common law trying to buy property in Florida. Title company rejected documents until they got formal validation. Took months.

Common Law Marriage vs Domestic Partnerships

People mix these up constantly. They're not interchangeable. Big differences:

Factor Common Law Marriage Domestic Partnership
Legal Status Full marriage rights where recognized Limited rights (varies by location)
Federal Recognition Yes (taxes, Social Security) No
Termination Requires formal divorce Often just paperwork
Creation Automatic when requirements met Registration required

Real Questions People Actually Ask

Based on actual legal consultations:

Does filing taxes jointly create a common law marriage?

Not alone. It's strong evidence though. In contested cases, the IRS filing plus other proof convinces courts.

If we move to a non-common law marriage state, is our marriage still valid?

Generally yes under the U.S. Constitution's "Full Faith and Credit Clause." But enforcement varies. Hospitals might refuse decision rights without documentation.

How do property rights work?

Same as formal marriages in common law marriage states. Separate property stays individual unless commingled. Marital property gets divided equitably during divorce.

Can we prevent common law marriage?

Absolutely. Sign a cohabitation agreement stating you don't intend marriage. Update annually. Keep finances separate. Avoid "husband/wife" references.

What if one partner dies without proof?

Surviving partner must petition court with evidence. Judges examine all documentation. Without strong proof? Risk losing everything to blood relatives.

Essential Documents You Should Have

Living in common law marriage states? Protect yourselves with:

  • Notarized Cohabitation Agreement
    Clearly states intentions ($300-$1,200 with lawyer)
  • Wills and Living Trusts
    Prevents intestate succession battles ($600-$2,000)
  • Financial Power of Attorney
    Manages money matters during incapacity ($150-$500)
  • Healthcare Directives
    Ensures medical decision rights ($100-$300)
  • Beneficiary Updates
    Retirement accounts, life insurance (Free)

Total ballpark cost? About $1,500-$4,000 upfront. Painful but cheaper than court battles later. Seen too many couples regret skipping this.

Look, navigating common law marriage states requires real effort. While skipping wedding plans sounds appealing, the legal ambiguity creates risks. Document everything if opting in. Better yet? Consult a local family attorney - most offer $200 consultations. Worth every penny to avoid nightmares.

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