A prenup business owner Massachusetts strategy starts with M.G.L. c. 209 § 25, which lets you designate your company as separate property before marriage. Without one, M.G.L. c. 208 § 34 lets a judge divide all property either spouse owns—including pre-marital businesses and their appreciation. A valid agreement must be fair and reasonable when signed and conscionable at divorce.
Massachusetts is one of the most aggressive states in the country for property division, and business owners face the greatest exposure. Unlike pure community-property or limited marital-property states, Massachusetts courts can reach virtually any asset either spouse owns—regardless of when it was acquired, whose name is on the title, or whether it predated the marriage. For an entrepreneur, that means a company built before the wedding can be pulled into the divisible estate and assigned, in whole or in part, to a spouse. A properly drafted and executed prenuptial agreement is the single most reliable tool to keep a business out of that estate.
Key Facts: Prenups and Divorce in Massachusetts
| Factor | Massachusetts Rule |
|---|---|
| Filing Fee | $215 divorce complaint + $15 summons surcharge (approx. $230 base; service adds $50–$75). As of June 2026. Verify with your local clerk. |
| Waiting Period | 1A uncontested: 120 days total (30-day to judgment nisi + 90-day nisi). 1B contested: 6-month pre-hearing wait + 90-day nisi |
| Residency Requirement | Domicile in MA if cause arose in-state; 1 year continuous residence if cause arose elsewhere (M.G.L. c. 208 §§ 4–5) |
| Grounds | No-fault (irretrievable breakdown) under c. 208 §§ 1A/1B; fault grounds (adultery, cruelty, felony) also available |
| Property Division Type | Equitable distribution under Mass. Gen. Laws c. 208 § 34 — not equal, and reaches ALL property |
| Prenup Statute | Mass. Gen. Laws c. 209 § 25 |
Why Massachusetts Business Owners Need a Prenup
Massachusetts business owners need a prenup because under Mass. Gen. Laws c. 208 § 34, a divorce judge can assign to either spouse "all or any part of the estate of the other"—and a spouse's estate is defined as "all property to which [he or she] holds title, however acquired" (Rice v. Rice, 372 Mass. 398, 400 (1977)). There is no automatic carve-out for a business.
This matters because Massachusetts is not a "marital property" state that excludes assets acquired before the marriage. The Supreme Judicial Court confirmed in Baccanti v. Morton, 434 Mass. 787 (2001), that even pre-marital assets and oral promises to keep them separate do not shield property from division. For a business owner, three categories of risk arise: the value of a company founded before the marriage, the appreciation of that company during the marriage, and any business interest acquired during the marriage. A spouse who contributed to a company's growth—directly through labor or indirectly by managing the household—strengthens a claim to a share of its value. To protect business prenup planning must therefore address both the underlying entity and its future appreciation, because Massachusetts courts routinely divide both absent a binding agreement.
The Two-Look Test: How Massachusetts Judges Decide Enforceability
Massachusetts enforces a prenuptial agreement only if it passes a two-look test: the agreement must be fair and reasonable at the time of execution (the first look) and conscionable at the time of enforcement (the second look), per DeMatteo v. DeMatteo, 436 Mass. 18, 34–35 (2002), building on Osborne v. Osborne, 384 Mass. 591 (1981). An agreement must also be in writing and signed voluntarily.
The first look examines the circumstances when the parties signed. Courts ask whether each spouse made full and fair disclosure of assets, whether each had the opportunity to consult independent counsel, and whether the agreement was signed free of fraud, duress, or coercion. The second look, which DeMatteo more accurately labeled a "conscionability" review, asks whether circumstances during the marriage changed so dramatically that enforcement would leave the contesting spouse "without sufficient property, maintenance, or appropriate employment to support herself." Crucially, an entrepreneurial prenup does not fail simply because it produces a lopsided result. The SJC held that an agreement is enforceable even if it leaves one spouse in "an essentially different lifestyle." The outer limit is narrow: only an agreement that strips a spouse of substantially all marital rights violates public policy and becomes unenforceable.
Key Massachusetts Cases Every Business Owner Should Know
Three Supreme Judicial Court decisions define how Massachusetts treats prenuptial agreements: Osborne v. Osborne (1981) first held prenups are not against public policy, DeMatteo v. DeMatteo (2002) established the modern two-look framework, and Austin v. Austin, 445 Mass. 601 (2005), confirmed that even permanent alimony waivers are enforceable. A 2023 Appeals Court decision, Rudnick v. Rudnick, shows the second look still has teeth.
Osborne v. Osborne, 384 Mass. 591 (1981), enforced an agreement signed only hours before the wedding that waived alimony and separate property, even though it favored the wealthier husband—because it was fair when executed and at enforcement. DeMatteo v. DeMatteo, 436 Mass. 18 (2002), refined Osborne's "second look" into a narrower conscionability standard, holding that a one-sided agreement is valid unless it leaves a spouse destitute. Austin v. Austin, 445 Mass. 601 (2005), overruled a skeptical Appeals Court decision and affirmed that a permanent alimony waiver signed two days before the wedding was enforceable, in part because the wife understood her rights from a prior divorce. In 2023, Rudnick v. Rudnick illustrated the limit: the agreement passed the first look but failed the second look because material changes during the marriage rendered it unconscionable at divorce. For business owners, these cases confirm a well-drafted, well-disclosed prenup is a durable shield.
How to Value a Business in a Massachusetts Divorce
In a Massachusetts divorce, a business is valued by a forensic expert who applies one of three approaches—income, market, or asset-based—and the resulting figure becomes part of the c. 208 § 34 estate unless a prenup removes it. Courts also separate "enterprise goodwill" (transferable, divisible) from "personal goodwill" (tied to the owner, often excluded), and apply coverture fractions to allocate marital versus separate value.
For business valuation prenup planning, understanding the methods matters because the agreement can fix or exclude the value the court would otherwise divide. The income approach capitalizes expected future earnings and is common for established, profitable companies. The market approach compares the business to recent sales of similar firms. The asset-based approach nets tangible and intangible assets against liabilities and suits asset-heavy or pre-revenue ventures. Under Baccanti v. Morton, 434 Mass. 787 (2001), courts apply a coverture fraction to allocate the marital portion of equity and stock options that vest over time. Because expert valuations frequently differ by hundreds of thousands of dollars and litigation over them is expensive, a prenup that pre-defines the business as separate property—and excludes its appreciation—eliminates the most contested and costly fight in an entrepreneur's divorce.
Drafting an Enforceable Business Owner Prenup
An enforceable LLC prenup or business-protection agreement in Massachusetts requires five elements: a written contract, full and fair financial disclosure of all assets, independent legal counsel for each spouse, voluntary signing well before the wedding (ideally 30+ days), and terms that are fair when signed and not unconscionable at divorce, per DeMatteo and Austin. Skipping any element creates a challenge point.
The single biggest enforceability risk is timing. In both Osborne and Austin, agreements signed hours or two days before the wedding survived—but only because other safeguards were strong. The safer practice is to finalize the agreement at least 30 days before the ceremony, giving each party a genuine opportunity to review terms and consult counsel. For an LLC or closely held corporation, the agreement should: (1) identify the business by name, entity type, and ownership percentage; (2) attach a current valuation or financial statement to satisfy the disclosure requirement; (3) expressly designate the business and its future appreciation as separate property; (4) address how a spouse's contributions during the marriage will (or will not) create a marital interest; and (5) coordinate with the operating agreement and any buy-sell provisions. Each spouse should retain independent counsel, because shared or absent representation is a frequent ground for attack.
What a Prenup Cannot Do in Massachusetts
A Massachusetts prenup cannot predetermine child custody or child support, because those issues are decided by the court under the best-interests-of-the-child standard at the time of divorce, not by private contract. A prenup also cannot include unconscionable terms that strip a spouse of substantially all marital rights, and it cannot bind the court on parenting time.
This limitation is firm regardless of how the business is structured. While spouses can waive alimony and divide property by agreement—including designating a company as separate—they cannot waive a child's right to support or fix a custody outcome in advance. Massachusetts courts retain full authority over child-related matters under c. 208 and the relevant custody statutes, and any prenup provision purporting to limit child support will be disregarded. Additionally, although Austin v. Austin confirmed alimony waivers are generally enforceable, the second look protects against catastrophic unfairness: if enforcing the waiver would leave a spouse unable to support themselves due to changed circumstances, a court may decline to enforce that provision. Business owners should therefore treat a prenup as a powerful property-protection tool, not a complete shield against every divorce obligation, and draft child-related expectations as non-binding statements of intent rather than enforceable terms.
Costs and Process: Filing a Divorce in Massachusetts
The filing fee for a divorce complaint in Massachusetts is $215 plus a $15 summons surcharge, totaling roughly $230 before service costs of $50–$75 for a constable or sheriff (as of June 2026; verify with your local Probate and Family Court clerk). Divorces are filed in the Probate and Family Court for the county where a spouse lives, under the fee authority of M.G.L. c. 262.
Massachusetts offers two no-fault paths. A 1A divorce (uncontested) under c. 208 § 1A is filed jointly when both spouses agree the marriage has irretrievably broken down and have a written separation agreement covering property, support, and any children. A 1A case carries a 120-day total waiting period: 30 days until the judgment nisi enters, then 90 additional days until it becomes absolute. A 1B divorce (contested) under c. 208 § 1B is filed when spouses cannot agree on all terms; it triggers a six-month waiting period before a hearing can be scheduled, followed by the 90-day nisi period. Fault grounds—including adultery, cruelty, and felony conviction—exist but most attorneys recommend no-fault filing to reduce cost and litigation. Indigent filers can request a fee waiver via an Affidavit of Indigency. For business owners, a valid prenup can dramatically shorten and simplify this process by removing the company from contested property issues.