Connecticut Prenup Laws: Guide for Engaged Couples

Getting married in Connecticut? 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: Conn. Gen. Stat. § 46b-36g enumerates the conditions that render a prenup unenforceable (matching the UPAA standard). The Connecticut Supreme Court in McHugh v.

Key points

  • Prenups are recognized if they’re voluntary, in writing, and signed by both partners.
  • Under Connecticut law, a premarital agreement is unenforceable if the party against whom enforcement is sought proves any of the following: (1) they did not exe…
  • Connecticut has adopted the Uniform Premarital Agreement Act (effective since 1995, see Conn. Gen. Stat. §§ 46b-36a to 46b-36j).

Are prenups legal in Connecticut?

Connecticut has adopted the Uniform Premarital Agreement Act (effective since 1995, see Conn. Gen. Stat. §§ 46b-36a to 46b-36j). A valid Connecticut prenup must be in writing and signed by both parties. There is no statutory requirement in Connecticut for notarization or witnesses, but in practice contracts are often notarized.

What makes a Connecticut prenup enforceable?

Under Connecticut law, a premarital agreement is unenforceable if the party against whom enforcement is sought proves any of the following: (1) they did not execute the agreement voluntarily, (2) the agreement was unconscionable (extremely unfair) when it was executed, or (3) before signing, they were not provided a fair and reasonable financial disclosure and did not waive such disclosure in writing.

What you can—and can’t—include

Connecticut allows parties to contract on matters including property division, alimony (called spousal support), inheritance rights (e.g. waiving elective share), and estate planning matters in a prenup. However, child support cannot be compromised by any agreement (any such provision is void by law).

Simple process

To ensure enforceability in Connecticut, couples should each consult an attorney prior to signing – while not explicitly mandated, independent counsel helps show the agreement was knowing and voluntary. The agreement should recite that both parties had the opportunity to seek counsel. Provide full financial disclosures: attach schedules or include a detailed listing of each party’s assets, liabilities, and income.

Next steps

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

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Common Questions:

Are prenups legal in Connecticut?

Yes. Written, signed prenups are recognized in Connecticut when basic requirements are met. In short: Conn. Gen. Stat. § 46b-36g enumerates the conditions that render a prenup unenforceable (matching the UPAA standard). The Connecticut Supreme Court in McHugh v.

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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