Colorado Prenup Laws: Guide for Engaged Couples

Getting married in Colorado? A prenuptial agreement lets you set clear expectations about property, debt, and (where allowed) support—so you’re not relying only on default state rules. In short: Colorado’s premarital agreement law is found at Colo. Rev. Stat. § 14-2-309 to 14-2-313. These sections incorporate the UPMAA’s provisions. For example, C.R.S.

Key points

  • Prenups are recognized if they’re voluntary, in writing, and signed by both partners.
  • The UPMAA changed the standard for unenforceability in Colorado.
  • Colorado was one of the first states to adopt the Uniform Premarital and Marital Agreements Act (UPMAA) in 2013, replacing its earlier UPAA adoption.

Are prenups legal in Colorado?

Colorado was one of the first states to adopt the Uniform Premarital and Marital Agreements Act (UPMAA) in 2013, replacing its earlier UPAA adoption. A Colorado prenup must be in writing and signed by both parties. There is no requirement for notarization or witnesses in the statute, but to make a valid contract, signatures are typically acknowledged by a notary. The UPMAA (Colo. Rev. Stat. §14-2-301 et seq.

What makes a Colorado prenup enforceable?

The UPMAA changed the standard for unenforceability in Colorado.

What you can—and can’t—include

A Colorado prenup can cover a wide array of financial matters: property division at divorce, spousal maintenance (alimony), responsibility for debts, rights to life insurance benefits, and even choice of law governing the agreement. However, like elsewhere, child support cannot be adversely affected by a prenup (Colo. Rev. Stat. §14-2-311 voids any provision that limits child support).

Simple process

Colorado couples should approach a prenup with transparency and fairness. Both parties should disclose financial information in writing (attach financial statements or schedules to the agreement).

Next steps

Start your Colorado prenup

General information only, not legal advice. Laws and cases change—consider speaking with a local attorney about your situation.

Browse other states in our State Guides hub.

Common Questions:

Are prenups legal in Colorado?

Yes. Written, signed prenups are recognized in Colorado when basic requirements are met. In short: Colorado’s premarital agreement law is found at Colo. Rev. Stat. § 14-2-309 to 14-2-313. These sections incorporate the UPMAA’s provisions. For example, C.R.S.

Do we have to notarize the prenup?

Not always mandated by statute, but notarization is strongly recommended to prove execution and avoid authenticity disputes.

What financial disclosure should we exchange?

Share a clear picture of assets, debts, and income (or sign a clear written waiver after adequate knowledge). Better disclosure makes stronger agreements.

Can we waive or limit spousal support?

Often yes, within public‑policy limits. Extreme outcomes may be reviewed. Independent counsel and fair timing improve enforceability.

Can a prenup decide child support or custody?

No. Those issues are decided later by a court based on the child’s best interests and statutory guidelines.

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