Colorado Prenup LawThe Longmont Law Firm · Attorney Liken
Home › Prenup & Postnup FAQ

Frequently Asked Questions

Colorado Prenup & Postnup FAQ

Straight answers, each tied to the Colorado statute so you can check it yourself. Reviewed October 2026.

Are prenups enforceable in Colorado?

Yes. Colorado's Uniform Premarital and Marital Agreements Act, C.R.S. § 14-2-301 and following, governs agreements signed on or after July 1, 2014. An agreement must be in a record signed by both parties (C.R.S. § 14-2-306). A court can refuse to enforce it if consent was not voluntary, if a party lacked access to independent counsel, or if financial disclosure was inadequate (C.R.S. § 14-2-309). How Colorado law works.

What is the difference between a prenup and a postnup?

A premarital agreement is signed by people who intend to marry and takes effect on marriage. A marital agreement (postnup) is signed by spouses who intend to stay married and takes effect when both sign (C.R.S. §§ 14-2-302, 14-2-307). The same Colorado act governs both.

Can a prenup decide custody or child support?

No. A term that adversely affects a child's right to support is unenforceable, and a term about parental responsibilities or parenting time is not binding on the court (C.R.S. § 14-2-310).

Do we each need our own lawyer?

Colorado law looks at whether each party had access to independent legal representation before signing (C.R.S. § 14-2-309(2)). Separate lawyers are the surest way to build an agreement that holds up. Attorney Liken represents one party only.

How early should we start?

Ideally three to four months before the wedding. Use the wedding-date timeline planner to see your dates. Rushing an agreement into the last days before a wedding invites a duress challenge.

When does a Colorado prenup take effect?

On marriage (C.R.S. § 14-2-307). Until then it binds no one.

Does a prenup need consideration to be valid?

No. Colorado says a premarital or marital agreement is enforceable without consideration, as long as it is in a record signed by both parties (C.R.S. § 14-2-306).

Can a prenup waive spousal maintenance?

Yes, maintenance is a marital right the parties can address (C.R.S. § 14-2-302(4)). But a maintenance term can be refused enforcement insofar as it is unconscionable at the time of enforcement, decided by the court as a matter of law (C.R.S. § 14-2-309(5)).

Can we change a prenup later?

Yes. An amendment, meaning a modification or revocation, must also be in a record signed by both parties (C.R.S. §§ 14-2-302, 14-2-309(8)).

We are entering a civil union, not a marriage. Does this apply?

Yes. Colorado lets parties to a present or prospective civil union make the same kinds of agreements, and the act applies to them (C.R.S. § 14-2-303.5).

Are postnuptial agreements valid in Colorado?

Yes. Colorado expressly recognizes "marital agreements" between spouses who intend to remain married (C.R.S. § 14-2-302(2)). They are enforceable without consideration if in a record signed by both spouses (C.R.S. § 14-2-306).

When does a postnup take effect?

When both spouses sign it (C.R.S. § 14-2-307).

Can we sign a postnup if we are already separating?

The act does not apply to a separation or dissolution agreement signed when a legal separation or divorce is pending or anticipated (C.R.S. § 14-2-303). That is a separation agreement, which is reviewed by the divorce court. Attorney Liken can help with either; see divorce and family law.

Do the same disclosure and lawyer rules apply to postnups?

Yes. The enforcement grounds in C.R.S. § 14-2-309 apply to marital agreements just as they do to premarital agreements.

Does a prenup have to be notarized in Colorado?

The act requires a record signed by both parties (C.R.S. § 14-2-306); it does not list notarization as a requirement. Attorney Liken still recommends a formal, documented signing, because a clean record of who signed and when helps defeat later challenges.

Can an agreement cover what happens at death?

Yes. Property rights and liabilities at the death of a spouse are among the marital rights an agreement can address (C.R.S. § 14-2-302(4)(d)). Coordinate it with your estate plan; see estate planning on longmont.law.

We signed a prenup in another state. Is it valid here?

Often, yes. Colorado honors the parties' choice of another state's law if that state had a significant relationship to the agreement or a party when signed, unless that law conflicts with C.R.S. § 14-2-309 or a fundamental Colorado public policy (C.R.S. § 14-2-304).

How long does a claim under a prenup last?

Any statute of limitations on a claim under the agreement is tolled during the marriage, subject to equitable defenses such as laches and estoppel (C.R.S. § 14-2-311).

Can a prenup waive attorney fees in a future divorce?

Parties may address attorney fees (C.R.S. § 14-2-302(4)(e)), but a waiver or allocation of fees is unenforceable insofar as it is unconscionable at the time of enforcement (C.R.S. § 14-2-309(5); In re Marriage of Ikeler, 161 P.3d 663 (Colo. 2007)).

What does a free 20-minute call cover?

Your goals, your timeline and whether an agreement fits. Attorney Liken calls you at the time you choose. It does not create an attorney-client relationship, so please do not share confidential details until you have a signed fee agreement.

Can you represent both of us?

No. Attorney Liken represents one party. Your partner should have independent counsel; Colorado law looks at whether each party had access to independent legal representation (C.R.S. § 14-2-309(2)).

Talk it through with Attorney Liken

Pick a time and Attorney Liken calls you. Twenty minutes, no charge, no obligation. You will know whether a prenup or postnup fits your situation and what it would take.

Free 20-Min Call with Attorney Liken

ServiceShield

Exclusively for Colorado Veterans & Active Duty

ServiceShield is The Longmont Law Firm's private program for Colorado U.S. military veterans and active-duty servicemembers. Military life raises its own marital agreement questions: deployment, military retirement, the Survivor Benefit Plan, VA benefits and moves between duty stations. Members are verified by DD-214 or a DoD service status check, and member benefits are shared only inside the secure ServiceShield portal.

Learn about ServiceShield   Colorado servicemember laws

Free 20-Min CallAttorney Liken calls you · no charge