Common-law marriage in Colorado is a legally valid marriage formed without a license or ceremony. Colorado is one of a small number of states that still recognizes it. If a couple mutually agrees to enter into marriage and then acts in ways that reflect that agreement, they may be married in the eyes of Colorado law — with the same property, support, and inheritance consequences as any other marriage.

For some couples, learning this is a relief. For others, it lands like a financial ambush. It usually surfaces at the worst possible moment: when a long relationship ends and one partner says a marriage existed while the other insists it never did.

TL;DR

• Common-law marriage in Colorado is a real marriage, requiring a real divorce to end it.
• Living together, sharing bills, or raising children together does not by itself create one.
• The current test comes from Hogsett v. Neale (Colo. 2021): mutual agreement to enter marriage, followed by conduct reflecting that agreement.
• Courts examine the totality of the circumstances. No single document or fact decides it.
• Whether a common-law marriage exists can determine property division, debt allocation, maintenance, and inheritance rights.

Table of Contents

1. What Common-Law Marriage Is — and What It Is Not
2. The Current Legal Test in Colorado
3. Why the Answer Carries Real Financial Weight
4. When One Partner Says Married and the Other Says Never
5. The Everyday Records That Become Evidence
6. Conclusion: A Fact-Specific Question Worth Answering Early

What Common-Law Marriage Is — and What It Is Not

Common-law marriage in Colorado is a marriage formed by agreement and conduct rather than by license and ceremony. Once formed, it is legally identical to a licensed marriage. There is no such thing as a common-law divorce. Ending a common-law marriage requires a dissolution of marriage proceeding, the same as any other.

What common-law marriage is not is a status you drift into by living together long enough. Colorado has no seven-year rule. There is no duration that converts cohabitation into marriage, and no number of shared years, shared children, or shared mortgage payments that does it automatically.

The Current Legal Test in Colorado

The governing test for common-law marriage in Colorado comes from the Colorado Supreme Court’s 2021 decision in Hogsett v. Neale. A common-law marriage may be established by the mutual agreement of the couple to enter into the legal and social institution of marriage, followed by conduct manifesting that agreement.

The core question is whether the parties intended to enter a marital relationship — to share a life together as spouses in a committed, intimate relationship of mutual support and obligation.

 

Under Hogsett v. Neale, a Colorado common-law marriage requires two things: a mutual agreement to be married, and conduct reflecting that agreement. Courts assess the totality of the circumstances, and no single factor is dispositive. The party claiming the marriage exists carries the burden of proof.

Hogsett deliberately loosened the older checklist approach. The Court recognized that many traditional markers of marriage — joint accounts, shared surnames, joint tax filings — are no longer exclusive to married couples, and that some couples could not access those markers at all. Evidence is now weighed in context rather than checked off a list.

One point is easy to miss: an agreement to marry in the future does not create a common-law marriage. The mutual agreement has to be a present one.

If a marriage is found to exist, ending it runs through the same process as any other divorce and separation in Colorado.

If you are separating from a long-term partner and the word “married” has entered the conversation, do not guess at the answer. Talk with our team.

Why the Answer Carries Real Financial Weight

Whether a common-law marriage exists can reshape the entire financial outcome of a separation.

If a marriage is found to exist, Colorado’s marital property rules apply. Assets and debts acquired during the marriage may be subject to equitable division. Spousal maintenance becomes possible. Retirement accounts accrued during the marriage may be divisible. Inheritance rights attach, which is why these disputes so often surface in probate court after one partner dies.

If no marriage is found, the parties generally leave with what they legally own. There is no maintenance. There is no marital estate to divide. Contributions that felt shared may carry no legal weight at all.

 

The existence of a common-law marriage can be the difference between an equitable division of a decade of shared assets and each partner walking away with only what is titled in their name.

If the marriage is established, the next question becomes how property and debt are divided in a Colorado divorce.

When One Partner Says Married and the Other Says Never

The typical common-law marriage dispute is not about a couple who both believed they were married. It is about two people who remember the same relationship differently — and who now have very different financial incentives.

Courts recognize this. The party asserting a marriage exists bears the burden of proving it. And a sincere belief on one side is not enough on its own; the test asks about mutual intent.

These cases are fact-intensive and heavily dependent on credibility, testimony, and documents that were never created with a courtroom in mind.

The Everyday Records That Become Evidence

In a common-law marriage dispute, evidence tends to come from ordinary life rather than from formal legal documents. Courts may consider, in context:

• Any express agreement to be married, written or spoken
• How the couple described the relationship to family, employers, and institutions
• Joint bank accounts, jointly titled property, and shared financial obligations
• Beneficiary designations on retirement accounts and insurance policies
• Emergency-contact and next-of-kin designations on medical forms
• Tax filing status
• Symbolic acts, such as exchanging rings or marking an anniversary

None of these is decisive standing alone. Under Hogsett, each is weighed against the couple’s actual circumstances — including sincerely held beliefs about marriage and any cultural or practical reasons a couple might not have used conventional markers.

Do Not Sign Anything Until You Know Whether You Are Married

People in this situation often reach for a quick separation agreement to end the conflict. That instinct is understandable, and it can be costly. A separation agreement drafted without knowing whether a marriage exists can concede rights, or create obligations, that would never have applied.

We help clients across Fort Collins and Northern Colorado assess common-law marriage claims from both sides — asserting one, and defending against one. We can walk you through how the Hogsett standard maps onto the actual facts of your relationship and what is realistically at stake financially.

Schedule a consultation before you sign anything.

A Fact-Specific Question Worth Answering Early

Common-law marriage in Colorado is not a technicality. It determines whether a decade of shared life carries legal weight or none at all. And because the current standard turns on mutual intent and the totality of the circumstances, no article can tell you whether you are married. Only a careful look at your specific facts can begin to.

If a long-term relationship is ending and the question of marriage is live, the time to get clear on it is before either partner takes a position they cannot walk back.

Contact our Fort Collins team.

People Also Ask

How many years do you have to live together to be common-law married in Colorado?

There is no minimum. Colorado has never had a seven-year rule or any other duration requirement. Common-law marriage depends on mutual agreement and conduct, not on time.

Do you need a divorce to end a common-law marriage in Colorado?

Yes. A valid common-law marriage is a legal marriage, and ending it requires a dissolution of marriage proceeding through the court.

Does having children together create a common-law marriage in Colorado?

No. Raising children together is one piece of evidence a court may consider, but it does not create a marriage on its own. Many unmarried couples raise children together without ever intending to marry.

What if one partner thought they were married and the other did not?

The current Colorado test asks about mutual intent. A sincere belief held by only one partner is generally not enough. The party asserting the marriage carries the burden of proving it.