Prenup Massachusetts: Build a Strong Agreement

A prenuptial agreement is a contract two people sign before marriage to decide how property, debt, and support will be handled if the marriage ends. In Massachusetts, these contracts are common among people who own a home, run a business, or bring children from a prior relationship into a new marriage.

Not legal advice. This article is general information only. Prenup laws differ by state and change over time. Consult a licensed attorney in your state before acting on anything here.

Massachusetts does not follow the Uniform Premarital Agreement Act. Instead, the rules come from court decisions, and the state applies a distinctive two-step review that few other states use.

Is a Prenup Legally Binding in Massachusetts?

Yes. Massachusetts courts enforce prenuptial agreements that are fairly made and properly executed. The governing rules come from case law rather than a statute, with two decisions doing most of the work.

The leading case is DeMatteo v. DeMatteo, 436 Mass. 18 (2002), which set the framework still used today. A second case, Austin v. Austin, 445 Mass. 601 (2005), confirmed that a waiver of alimony in a prenup is generally enforceable.

The DeMatteo Standard at Signing

Under DeMatteo, an agreement must be fair and reasonable when it is signed. This is sometimes called the “first look.”

The bar at signing is not high. A court will uphold the agreement unless its terms strip a spouse of substantially all marital rights, or unless there was fraud, hidden assets, or some unfair advantage taken during the engagement.

The Second Look at Divorce

This is the feature that sets Massachusetts apart. Even a validly signed prenup gets a second review at the time of divorce, and it must still be conscionable when it is enforced.

A judge can decline to enforce the agreement if events during the marriage would leave the contesting spouse without enough property, support, or means to provide for himself or herself. A long illness or one spouse leaving the workforce to raise children can matter at this stage.

The second look does not let a judge rewrite the deal simply because it is one sided. An agreement stays valid even if it gives a spouse less than a court would have awarded on its own.

Who Bears the Burden

The spouse trying to set aside the agreement carries the burden of proof. That person must show the prenup was unfair when signed, or that enforcing it now would be unconscionable.

When the paperwork shows full disclosure and a fair process, challenges are difficult to win.

What a Massachusetts Prenup Can Cover

A prenup lets a couple set their own rules for money and property instead of relying on default divorce law. The table below shows common topics that an agreement can address.

What a Massachusetts Prenup Cannot Do

Some terms are off limits no matter how clearly the couple agrees to them. A judge will ignore or strike provisions that cross these lines.

• Waive or reduce child support, which belongs to the child and cannot be bargained away by the parents
• Decide child custody or parenting time in advance, since those depend on the child’s best interests at the time of the dispute
• Include anything illegal or that pushes a spouse toward divorce
• Set personal lifestyle terms, such as chores or appearance, that courts will not enforce
• Hide assets or rely on terms agreed to under pressure or fraud

How a Massachusetts Prenup Must Be Signed

Process matters as much as content. The way the agreement is made affects whether it survives a later challenge.

Writing and Signatures

The agreement must be in writing and signed by both spouses. An oral promise made before the wedding has no legal force.

Signing in front of a notary is standard practice and helps prove the agreement was voluntary. A signed, notarized document is far easier to defend in court.

Disclosure, Counsel, and Timing

Each spouse must give full and fair disclosure of assets, debts, and income before signing. A prenup built on hidden or vague finances is a leading reason agreements get thrown out.

Massachusetts does not strictly require each spouse to hire a lawyer, but separate independent counsel for each person is strongly advised. Independent review shows that both spouses understood the deal and entered it freely.

Sign well before the wedding, not in the final days. An agreement presented at the last minute can look coerced and is more open to attack.

Can a Massachusetts Prenup Waive Alimony?

Couples can address spousal support in a prenup, including setting an amount or waiving it entirely. Austin v. Austin confirmed that a clear alimony waiver is generally valid in Massachusetts.

Even so, an alimony term still faces the second look at divorce. A judge can decline to enforce a waiver if doing so would leave a spouse unable to meet basic needs.

For that reason, a waiver written carefully and signed with both spouses fully informed has the best chance of holding.

Full Financial Disclosure

Disclosure is the backbone of a valid Massachusetts prenup. Each spouse should list assets, debts, income, and business interests in writing, often as an attached schedule.

Courts look closely at whether each person knew what they were giving up. A spouse who can show the other hid or understated assets has a strong path to setting the agreement aside.

No Prenup? How Massachusetts Splits Property

Without a prenup, divorce property division follows M.G.L. c. 208, § 34. Massachusetts is an equitable distribution state, which means a judge divides property fairly, though not always equally.

Under that statute, a court can divide almost all property either spouse owns, including assets brought into the marriage and some inheritances. The judge looks at factors such as the length of the marriage, each spouse’s contributions, and future needs.

A prenup replaces much of that judicial discretion with terms you choose in advance.

Common Reasons Massachusetts Prenups Fail

Most failed prenups break down over process problems rather than the terms themselves. The issues below come up again and again.

• Incomplete or false financial disclosure by one spouse
• Signing under pressure or right before the wedding
• Terms so one sided they strip a spouse of nearly all marital rights
• No real chance to read the agreement or consult a lawyer
• Enforcement that would leave a spouse destitute at the time of divorce
• Sloppy drafting, missing signatures, or no notarization

How Much Does a Prenup Cost in Massachusetts?

Cost depends on how complex your finances are and whether you hire lawyers. The table below shows typical ranges.

An online service like HelloPrenup lets couples draft an agreement at a flat price, then have a lawyer review it if they choose. This is a sensible middle path for couples with straightforward finances.

How to Create a Massachusetts Prenup, Step by Step

The process is straightforward when you start early. These steps follow the practices Massachusetts courts reward.

• Talk openly with your partner about goals and expectations before drafting anything
• Each spouse lists all assets, debts, and income for full disclosure
• Draft the agreement, through a lawyer or an online platform
• Have each spouse review the terms, ideally with separate independent counsel
• Sign the written agreement in front of a notary, well before the wedding
• Store signed copies safely and update related estate documents

Final Thoughts on a Massachusetts Prenup

A Massachusetts prenup works best when it is fair, fully disclosed, and signed without pressure. The state’s two-look review means both the signing process and the result at divorce have to hold up.

Couples with a home, a business, or children from a prior relationship gain the most from putting one in place. Whether you work with a lawyer or an online platform, the goal is a clear contract that reflects what both partners decided together.

Sources

• DeMatteo v. DeMatteo, 436 Mass. 18 (2002), establishing the fair and reasonable standard at signing and the conscionability review at enforcement.
• Austin v. Austin, 445 Mass. 601 (2005), confirming that an alimony waiver in a prenuptial agreement is generally enforceable.
• Massachusetts General Laws, Chapter 208, Section 34, the equitable distribution statute that applies absent a valid agreement.
• DeMatteo v. DeMatteo, 436 Mass. 18 (full opinion)
• M.G.L. c. 208, § 34 (Massachusetts Legislature)