Your inheritance itself is separate property in Colorado and cannot be divided in a divorce. What can be divided is everything it earned while you were married. Under C.R.S. 14-10-113(4), any increase in the value of separate property during the marriage is marital property, which means a $200,000 inheritance that grew to $500,000 hands your spouse a claim on the $300,000 of growth. Protecting an inheritance in Colorado therefore comes down to two jobs: proving the original amount, and keeping the asset separate enough that a court can still tell where it came from.

Most people lose inheritance claims not because the law is against them, but because the paper trail is gone.

Is an Inheritance Marital Property in Colorado?

No, not the inheritance itself. C.R.S. 14-10-113(2) excludes from marital property anything acquired by gift, bequest, devise, or descent, along with property acquired in exchange for such property.

But three other provisions of the same statute complicate that considerably:

  • Subsection (3) presumes that all property acquired during the marriage is marital, and the burden is on you to overcome that presumption
  • Subsection (4) makes the appreciation during the marriage marital property, even though the original value stays separate
  • Subsection (7)(a) presumes that gifts from one spouse to the other are marital property, rebuttable only by clear and convincing evidence

Run the arithmetic on a realistic case. You inherit $250,000 in 2010 and invest it. By the time you divorce in 2026 the account holds $640,000.

  • Separate property: $250,000
  • Marital property subject to equitable division: $390,000

Colorado divides marital property equitably rather than equally, so your spouse does not automatically receive half of that $390,000. But it is on the table, and in a long marriage it frequently gets treated close to evenly.

How Do Inherited Assets Lose Their Separate Character?

Through commingling, which is a quiet process that happens over years without anyone deciding to do it.

The most common ways an inheritance becomes indistinguishable from marital money:

  • Depositing it into a joint account, even briefly, and then spending from that account
  • Retitling property into both names, which also triggers the interspousal gift presumption in subsection (7)(a)
  • Using inherited funds for a down payment on a jointly titled marital home
  • Paying the mortgage on a marital residence from inherited funds
  • Making improvements to marital property with inherited money
  • Adding a spouse to an inherited investment account for convenience
  • Mixing inherited funds with marital earnings in the same account over years of deposits and withdrawals

The problem is evidentiary rather than legal. Colorado will still recognize a separate property claim in commingled funds if you can trace them. But tracing fifteen years of transactions through a joint checking account, with statements you may no longer have, is expensive and often inconclusive. When tracing fails, the marital property presumption wins.

Our guide on commingling separate property covers the mechanics in a community property context, and the tracing principles are similar.

What Steps Actually Protect an Inheritance?

The protective measures are unglamorous and highly effective, and nearly all of them are things you do at the moment you receive the inheritance.

Keep it titled in your name alone. Never add your spouse to the account or the deed, even for convenience or estate planning reasons. There are better ways to handle both.

Use a dedicated account. Open a new account solely for the inherited funds. Do not route your paycheck through it. Do not pay household bills from it.

Never deposit into a joint account, even briefly. A two-week stop in a joint account creates an argument you will spend real money rebutting.

Do not use it for marital purposes. Down payments on the marital home, home improvements, family vacations, and paying joint debt all convert separate money into a marital contribution.

Document everything at the outset. Keep the will or trust, the estate distribution records, the closing statement, and the opening account statement showing the initial deposit amount and date.

Get a date-of-receipt valuation. For real estate, artwork, a business interest, or anything not denominated in dollars, get a formal appraisal when you receive it. Reconstructing a 2011 value in 2026 is far harder and far more contestable.

Track the appreciation separately. Since the growth is marital, know what it is. Surprises at mediation are expensive.

Consider a postnuptial agreement. This is the strongest available protection. Colorado permits marital agreements under the Uniform Premarital and Marital Agreements Act, and an agreement confirming the inheritance and its income as separate property removes the entire dispute. It requires disclosure, voluntariness, and separate counsel for each spouse to hold up.

What About an Inherited House or Family Business?

These are harder than an investment account, because both tend to absorb marital effort and money.

An inherited house generates two problems. If marital funds paid the mortgage, taxes, or improvements, the marital estate has a contribution claim. And the appreciation during the marriage is marital under subsection (4). If you moved into it as the family home, expect a fight over both.

An inherited business interest raises a third issue: your own labor. Work you performed during the marriage is a marital contribution, and increases in value attributable to your efforts rather than passive market growth are treated as marital. Distinguishing passive appreciation from effort-driven growth generally requires a business appraiser. Our guide on protecting business assets in a Colorado divorce covers the valuation issues.

An inheritance still in trust may be treated differently again, depending on whether you have a present enforceable right to distributions or merely an expectancy, and on the trustee’s discretion.

Colorado Inheritance and Divorce FAQs

What if I received my inheritance before the marriage?

The same appreciation rule applies. Only the growth from the date of marriage forward is marital, so your date-of-marriage value is the number that matters.

Does it matter that my spouse never contributed to the inherited account?

Not for the appreciation. Subsection (4) makes growth during the marriage marital regardless of contribution. Contribution matters to how equitably a court divides it.

Can I get the inheritance back if I already put it in a joint account?

Possibly, through tracing. Success depends on how much documentation survives and how many transactions have to be traced through.

What if I inherit during the divorce proceeding?

An inheritance received after separation is generally separate property, but it can affect maintenance analysis since it changes your financial resources.

Does a will saying “for my daughter only” protect it?

It helps establish intent, but it does not override Colorado’s appreciation rule. The growth is still marital.

Protecting an Inheritance Starting Today

If you have already received an inheritance, the value of acting now is that records still exist.

  1. Locate and preserve the source documents, including the will or trust, estate accounting, and the first account statement
  2. Separate the funds into an account in your name alone if they are not already
  3. Stop using inherited funds for anything marital, effective immediately
  4. Get valuations for any non-cash inherited asset, dated as close to receipt as possible
  5. Calculate the appreciation so you know the actual exposure before anyone negotiates
  6. Talk to counsel about a postnuptial agreement, which is the only measure that removes the dispute entirely rather than just improving your evidence

Flatiron Legal Advisors handles inheritance and separate property questions through our Colorado divorce team, and can coordinate with Colorado estate planning so an inheritance you plan to leave your own children is protected on the way in. For related reading, see our guide on protecting assets in a high net worth Colorado divorce.

Schedule a consultation to review where your inheritance stands.