New Hampshire Prenup Laws: Guide for Engaged Couples

Getting married in New Hampshire? 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.

Key points

  • Prenups are recognized if they’re voluntary, in writing, and signed by both partners.
  • New Hampshire uses a two-step fairness test — fair at signing and fair at enforcement.
  • Must be in writing, signed before marriage. No notarization required but advised. Full disclosure is expected.

Are prenups legal in New Hampshire?

Must be in writing, signed before marriage. No notarization required but advised. Full disclosure is expected.

What makes a New Hampshire prenup enforceable?

New Hampshire uses a two-step fairness test — fair at signing and fair at enforcement. Lack of disclosure, duress, or unconscionability at either stage can void the agreement.

What you can—and can’t—include

Can waive property, alimony, and inheritance; cannot determine child custody/support.

Simple process

Provide detailed disclosures, sign well before the wedding, and use notarization and counsel.

Next steps

Start your New Hampshire 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 New Hampshire?

Yes. Written, signed prenups are recognized in New Hampshire when basic requirements are met.

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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