By Aaron Thomas, Esq. · Updated October 19, 2026
In 2026, a prenup typically costs between $600 and $10,000 or more per couple, depending on how the agreement is created.
A DIY online template runs about $600, software-drafted agreements with attorney review run $2,000 and up, and a traditional attorney billing hourly typically costs $2,500 to $10,000 or more.
At Prenups.com, a prenup is a flat $3,500. No hourly billing.
| Approach | Typical cost (per couple) | When a lawyer gets involved | Best for |
|---|---|---|---|
| DIY online template | $600 | Never | Simple finances, no major assets, willing to risk enforceability |
| Software-drafted + attorney review | $2,000 and up | After the document is generated | Couples who have already agreed on every term and want it documented |
| Attorney-drafted, flat fee (Prenups.com) | $3,500 flat, plus independent review for your partner | From the first conversation, before anything is drafted | Couples who want an attorney to design the agreement around their goals, at a predictable price |
| Traditional hourly attorney | $2,500 to $10,000+ | From the first conversation | Couples with an existing attorney relationship, open-ended budget |
A prenup drafted by a licensed attorney who knows Massachusetts’s enforceability rules is a fundamentally different product from an online template. A $3,500 agreement that holds up in court is worth more than a $600 template that does not.
Key Takeaways
- In 2026, a prenup in Massachusetts typically costs between $600 and $10,000 or more per couple, depending on how it is created. Prenups.com charges a flat $3,500, with no hourly billing.
- The $3,500 flat fee is about 8 percent of the $45,000 average Massachusetts wedding cost reported by The Knot 2026 Real Weddings Study.
- Massachusetts has no premarital agreement statute. Under DeMatteo v. DeMatteo, an agreement must be fair and reasonable when signed and conscionable when it is enforced at divorce.
- Because of that second look, even a valid agreement can be set aside if changed circumstances would leave a spouse without sufficient property, maintenance, or appropriate employment.
- Massachusetts does not require witnesses, but independent counsel is strongly relevant to whether a spouse’s waiver was meaningful, so independent review for your partner is worth planning for.
What a Prenup Costs in Massachusetts
A prenup in Massachusetts typically runs between $2,500 and $10,000 when an attorney bills hourly. The low end usually means a simple agreement between two people with uncomplicated finances, and at the very bottom of that range you are often paying for a near-form document from an attorney who does not specialize in these agreements. Add a business, significant premarital assets, children from a prior relationship, or heavy negotiation, and the number climbs toward the top of the range.
Put the flat fee in context. The Knot 2026 Real Weddings Study, which surveyed couples married in 2025, puts the average Massachusetts wedding at $45,000. A $3,500 agreement is about 8 percent of that figure, and it shapes how a divorce would work for as long as the marriage lasts.
What You Are Opting Out Of
Without an agreement, a Massachusetts court divides property under equitable distribution, meaning the judge decides what is fair, which is not always the same as equal. Massachusetts is an all-property state, so the court’s reach is not limited to what you acquired during the marriage. Assets you owned before the wedding can be part of the conversation.
A prenup replaces that open question with terms the two of you chose. In Massachusetts it also has to do something most states do not ask of it, which is to stay reasonable for years after it is signed.
Two Looks, Not One
Massachusetts has not adopted the Uniform Premarital Agreement Act. The standard comes from case law, and the case that sets it is DeMatteo v. DeMatteo, 436 Mass. 18 (2002). Under that decision, a court looks at a prenup twice. The first look asks whether the agreement was fair and reasonable when it was signed. The second look asks whether it is conscionable at the time it is enforced.
The second look is what makes Massachusetts different. Even an agreement that was valid when signed can fail it if changed circumstances would leave a spouse without sufficient property, maintenance, or appropriate employment. The burden sits on the person challenging the agreement, and witnesses are not required, but the standard does not stop at the signing table.
What the Second Look Means for How an Agreement Is Written
A two-look standard changes the drafting job. The terms have to be reasonable on the day of signing and still reasonable after a decade of career changes, children, relocations, and business growth. Agreements that anticipate those foreseeable changes, and avoid leaving either spouse without sufficient support if the marriage ends, are the kind this doctrine tends to disturb least.
“In Massachusetts, a prenup has to be fair when it is signed and conscionable when it is enforced, so the drafting has to hold up on both days,” says Aaron Thomas, Esq., founder of Prenups.com.
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Independent counsel matters here as well. In Massachusetts it is strongly relevant to whether a spouse’s waiver of rights was a meaningful one. No agreement can promise that a court will never revisit its terms, and anyone who says otherwise is overselling. What a careful agreement can do is make that second look as uneventful as possible. A prenup that is enforceable in court on both days starts with full disclosure, terms that stay balanced over time, and a signing nobody was pressured into.
What Moves the Price
Complexity does most of the work. Two people early in their careers with straightforward assets need a simpler agreement than a couple bringing a business, real estate, retirement accounts, or equity compensation into the marriage. Couples are also marrying later. The U.S. Census Bureau reports a 2025 median age at first marriage of 30.8 for men and 28.4 for women, so many people arrive with years of financial history already built.
Negotiation is the second lever, since an aligned couple moves quickly and a couple working out support or a business spends more time. Independent review for your partner is the third. Massachusetts does not require it, but because counsel bears on whether a waiver was meaningful, skipping it can weaken the agreement where it matters most.
The Meter vs. the Fixed Price
Most Massachusetts family law attorneys bill prenups by the hour. That is hard to budget for, because the final bill depends on how many revisions you want and how long a negotiation runs, none of which you can know on day one.
Prenups.com charges $3,500 for a Massachusetts prenup, with no hourly billing, so the price is known before the work begins. An attorney is also in the conversation from the first call, before anything is drafted, which is where an agreement gets designed to survive two looks instead of one.
Starting the Process
The process begins with a consultation to understand your situation and goals, followed by financial disclosure from both people, drafting, a round of review and revisions, and signing. Massachusetts does not require witnesses, so signing is straightforward once the agreement is ready. For the full picture of what the flat fee covers, see the flat-fee pricing.
Want a Massachusetts prenup on a flat fee? Every Massachusetts agreement is prepared by our attorneys, including a licensed attorney as counsel of record, from the first draft through signing. Schedule a consultation.
Frequently Asked Questions
How much does a prenup cost in Massachusetts?
In 2026, a prenup typically costs between $600 and $10,000 or more per couple, depending on how it is created. A traditional attorney billing hourly usually runs $2,500 to $10,000 or more. At Prenups.com, a Massachusetts prenup is a flat $3,500, with no hourly billing.
What is the two-look doctrine in Massachusetts?
Under DeMatteo v. DeMatteo, a prenup must be fair and reasonable when it is signed and conscionable when it is enforced. A court checks the agreement at both points in time, not just at signing.
Can a Massachusetts court set aside a valid prenup at divorce?
In limited circumstances, yes. Even an agreement that was valid when signed can fail the second look if changed circumstances would leave a spouse without sufficient property, maintenance, or appropriate employment. The burden is on the person challenging the agreement.
Does a Massachusetts prenup need witnesses or a lawyer for each partner?
Massachusetts does not require witnesses. Independent counsel is strongly relevant to whether a spouse’s waiver was meaningful. The $3,500 flat fee is for the agreement itself, and independent review for your partner is separate.
Is a $600 online template enough in Massachusetts?
Rarely. A template is not built around your finances or around a standard that checks the agreement twice, and it comes with no attorney to make sure the drafting holds up. A flat $3,500 agreement that holds up in court is worth more than a $600 template that does not.
Can we sign a postnup in Massachusetts?
Yes. Massachusetts recognizes postnuptial agreements under Ansin v. Craven-Ansin, but courts scrutinize them more closely than prenups because the spouses are already married.
Sources
- DeMatteo v. DeMatteo, 436 Mass. 18, 762 N.E.2d 797 (2002)
- Ansin v. Craven-Ansin, 457 Mass. 283 (2010)
- The Knot 2026 Real Weddings Study, average wedding cost in Massachusetts: https://www.theknot.com/content/what-does-the-average-wedding-cost
- U.S. Census Bureau, “Census Bureau Releases New Estimates on America’s Families and Living Arrangements” (median age at first marriage, 2025: 30.8 for men, 28.4 for women): https://www.census.gov/newsroom/press-releases/2025/families-and-living-arrangements.html
