Laws for Prenuptial Agreements in Massachusetts

Getting married in Massachusetts?

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.
  • Massachusetts applies a “two-look” test. At execution, the agreement must be fair and reasonable.
  • Massachusetts prenups must be in writing, signed by both parties, and executed voluntarily before the marriage.

Why Massachusetts Uses a Two-Look Test

Massachusetts applies a two-look test in prenuptial agreements because courts view marriage as an evolving economic partnership. An agreement that appears fair when signed may still be reviewed at divorce to ensure it does not produce an unconscionable result under changed circumstances.

This approach reflects Massachusetts’ emphasis on equity and ongoing financial responsibility between spouses, rather than strict contract enforcement alone.

Are prenups legal in Massachusetts?

Massachusetts prenups must be in writing, signed by both parties, and executed voluntarily before the marriage. While notarization is not strictly required by statute, it is strongly advised to prove authenticity. Full and fair financial disclosure is expected — either through detailed schedules of assets and liabilities or a clear written waiver. Independent legal counsel is not mandatory but is highly recommended.

What makes a Massachusetts prenup enforceable?

Massachusetts applies a “two-look” test. At execution, the agreement must be fair and reasonable. At enforcement (divorce), it must still be conscionable in light of circumstances. The agreement will not be enforced if it leaves one spouse without sufficient means of support or is unconscionably one-sided at divorce.

What “Conscionable at Enforcement” Means

At divorce, Massachusetts courts examine whether enforcing a prenuptial agreement would leave one spouse without reasonable support or a meaningful share of marital resources. The focus is not whether the agreement is equal, but whether it is fundamentally unfair given the parties’ circumstances at that time.

Health issues, earning capacity, length of marriage, and reliance on marital roles can all influence this analysis.

What you can—and can’t—include

Parties can waive property rights, inheritance rights, and spousal support. However, provisions affecting child custody or support are unenforceable. Alimony waivers may be set aside if they would leave a spouse unable to support themselves at divorce.

Massachusetts Courts and Alimony Waivers

In Massachusetts, alimony waivers are more likely to be reviewed at enforcement than property provisions. Courts focus on whether enforcing the waiver would undermine basic support obligations after divorce.

Income and Lifestyle Changes Matter More in Massachusetts

Massachusetts courts often give significant weight to how a couple’s standard of living and income changed during the marriage. Agreements that sharply limit support despite long marriages or major lifestyle shifts may face closer scrutiny at enforcement.

Clear planning around future income, career changes, and role-based sacrifices can strengthen enforceability.

Independent Counsel as a Practical Safeguard

While independent legal counsel is not required in Massachusetts, courts often view separate representation as evidence that both parties understood the agreement and negotiated it fairly, which can matter under the two-look analysis.

Simple process

Draft and sign well before the wedding to avoid claims of duress. Provide full disclosure, attach asset schedules, and use independent counsel on both sides. Notarize and keep original copies safe.

Next steps

Start your Massachusetts prenup

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

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