Prenuptial Agreements in Massachusetts: Complete 2026 Legal Guide

A prenuptial agreement in Massachusetts is a legally binding contract authorized under M.G.L. Chapter 209, Section 25 that allows couples to determine how property will be divided and whether alimony will be paid if they divorce. Massachusetts courts enforce prenuptial agreements that are fair and reasonable at execution and conscionable at the time of divorce, using a unique "second look" doctrine that examines fairness at both signing and enforcement. Unlike many states, Massachusetts has not adopted the Uniform Premarital Agreement Act, instead relying on evolving case law that gives judges substantial discretion to invalidate agreements that would leave one spouse in extreme financial distress.

Key Facts: Massachusetts Prenuptial Agreements

What Is a Prenuptial Agreement in Massachusetts?

A prenuptial agreement in Massachusetts is a written contract created before marriage that designates how real property, personal property, and rights of action will be treated after the marriage is solemnized, as authorized by M.G.L. Chapter 209, Section 25. Under Massachusetts law, prenups can address property division, alimony rights, and asset characterization, but they cannot limit child support obligations or predetermine child custody arrangements because courts must always decide these matters based on the child's best interests at the time of divorce. The statute explicitly states that parties may make a written contract "providing that, after the marriage is solemnized, the whole or any designated part of the real or personal property or any right of action, of which either party may be seized or possessed at the time of the marriage, shall remain or become the property of the husband or wife, according to the terms of the contract."

Massachusetts Property Division Without a Prenup

Massachusetts follows equitable distribution for marital property, meaning courts divide assets fairly but not necessarily equally based on M.G.L. Chapter 208, Section 34, which authorizes judges to "assign to either husband or wife all or any part of the estate of the other." Under Section 34, courts consider 14 specific factors including marriage length (averaging 7.2 years in Massachusetts divorces), each spouse's contributions, age, health, occupation, income sources, vocational skills, employability, and opportunities for future asset acquisition. Massachusetts does not recognize separate property, so all assets owned by either spouse—including gifts, inheritances, and property acquired before marriage—are potentially subject to division regardless of when or how they were obtained. The parties' respective contributions to the marital partnership remain the touchstone of equitable division, giving judges substantial discretion to evaluate each couple's unique circumstances.

The "Two Look" Enforceability Test

Massachusetts courts employ a mandatory "two look" test that requires prenuptial agreements to pass scrutiny at two distinct time points: the agreement must be fair and reasonable when executed (the "first look") and conscionable when enforced at divorce (the "second look"). The first look examines whether both parties entered the agreement voluntarily with full financial disclosure, adequate time to review terms, and meaningful opportunity for independent legal counsel, focusing on the circumstances surrounding signing rather than the agreement's substance. The second look evaluates whether enforcement would be unconscionable given circumstances that developed during the marriage, with Massachusetts Appeals Court case law establishing that agreements will not be enforced if one party would be left "without sufficient property, maintenance, or appropriate employment to support oneself" due to changed circumstances. This two-part test distinguishes Massachusetts from states that adopted the Uniform Premarital Agreement Act, where enforceability standards are codified in statute rather than based on evolving judicial precedent.

What Can Be Included in a Massachusetts Prenup

Massachusetts prenuptial agreements can legally address property characterization (designating assets as separate versus marital property), division of real estate and personal property acquired before or during marriage, alimony amount and duration or complete waiver, business ownership interests and protection of closely-held companies, retirement account division including 401(k)s and pensions, debt responsibility and protection from a spouse's pre-marital obligations, estate planning rights including inheritance and death benefits, and management of financial accounts during marriage. Under M.G.L. Chapter 209, Section 25, couples may specify that property owned at the time of marriage remains separate property post-marriage, or they may agree that certain assets acquired during marriage will be treated as one spouse's separate property. Massachusetts courts have consistently upheld provisions designating 50% to 100% of marital assets to one spouse, complete alimony waivers, and agreements that deviate significantly from what M.G.L. Chapter 208, Section 34 would otherwise require, provided the agreement meets the two-look enforceability test and neither party is left in extreme financial distress.

What Cannot Be Included in a Massachusetts Prenup

Massachusetts prenuptial agreements cannot include provisions that limit, waive, or modify child support obligations because state law sets mandatory child support minimums determined by legal guidelines based on both parents' incomes and the child's needs. Child custody arrangements and parenting time schedules are prohibited in prenups because Massachusetts courts must always make custody decisions based on the best interests of the child at the time of divorce, which cannot be predetermined before the child is born or before the marriage dissolves. Agreements cannot include provisions that encourage divorce or make divorce more financially attractive than staying married, and they cannot contain terms that violate public policy such as waiving the right to seek protective orders in domestic violence situations. Courts will refuse to enforce child-related provisions even if both parties agreed to them, and if a prenup includes a child support waiver or specifies an amount considerably lower than what state guidelines require, the court will invalidate that specific provision while potentially leaving the rest of the agreement intact.

Financial Disclosure Requirements

Massachusetts law requires both parties to provide full and fair financial disclosure of all assets, debts, income sources, and material financial information before signing a prenuptial agreement, though disclosures do not have to be exact and general approximations of net worth may be sufficient. Full disclosure means each party must receive enough information to reasonably determine whether to enter the agreement, going beyond simple asset listing to demand comprehensive financial transparency including bank account balances, investment portfolios, real estate holdings, business valuations, retirement accounts, and outstanding debts. Failure to disclose material assets can render the entire agreement unenforceable under the first look test, as courts have found that one party cannot make an informed decision without knowing the other party's complete financial picture. Massachusetts courts require evidence that both parties had sufficient information at the time of signing, typically documented through financial affidavits, bank statements, tax returns, and property appraisals attached as exhibits to the prenuptial agreement itself.

Do You Need Separate Attorneys?

Massachusetts law does not strictly require each party to have independent legal counsel for a prenuptial agreement to be legally valid and enforceable, but having separate attorneys for both parties is strongly recommended and significantly strengthens the agreement's likelihood of surviving judicial scrutiny. Two parties cannot share one lawyer because it creates a conflict of interest where the attorney cannot fully advocate for both clients' competing interests, and Massachusetts Rules of Professional Conduct prohibit dual representation in adversarial situations. If only one party is represented by an attorney, the other party must be given meaningful opportunity to seek independent legal counsel, which includes sufficient time to find a lawyer (typically 30-90 days before the wedding) and properly review the terms before signing. Massachusetts case law shows that courts are more likely to enforce prenuptial agreements where both parties had separate attorneys who explained how the agreement impacts their legal rights, what they are waiving under M.G.L. Chapter 208, Section 34, and how the terms compare to what they would receive without the agreement.

Average Cost of a Prenuptial Agreement

The average cost for Massachusetts couples to have attorneys draft a complete prenuptial agreement ranges from $2,500 to $10,000 as of 2026, with most couples spending approximately $8,000 for full services including drafting, negotiation, and review by independent counsel for both parties. Individual attorney fees for drafting a basic prenup range from $2,000 to $2,500, while attorney review services cost approximately $500 on a flat fee basis. Complex agreements involving business valuations, multiple properties, or intricate asset protection provisions can cost $15,000 to $25,000 or more depending on the hours required and the attorneys' hourly rates, which typically range from $250 to $500 per hour for experienced family law practitioners in Massachusetts. Prenuptial agreements do not require court filing before marriage, so there are no upfront filing fees—court costs only arise if the prenup is later challenged or enforced during divorce proceedings, at which point standard divorce filing fees of $215 to $305 apply.

Timing: When Should You Sign a Prenup?

Massachusetts law does not specify a minimum time period between signing a prenuptial agreement and the wedding date, but courts scrutinize agreements signed shortly before marriage for evidence of duress or insufficient time for review. Best practice requires executing prenuptial agreements 60 to 90 days before the wedding to demonstrate that neither party faced time pressure or coercion, with many family law attorneys recommending starting the prenup process 6 to 12 months before the wedding date to allow adequate time for financial disclosure, attorney review, negotiation, and revisions. Signing a prenup within 7 to 14 days of the wedding raises red flags that one party may have been pressured into signing without meaningful opportunity to seek independent counsel or fully understand the terms, potentially invalidating the agreement under the first look voluntariness analysis. The 2023 Massachusetts Appeals Court decision in Rudnick v. Rudnick emphasized that parties must have "adequate time" to review and consider the agreement, though the court declined to establish a bright-line rule, instead examining timing as one factor among many in the totality of circumstances.

The "Second Look" Doctrine Explained

The second look doctrine is Massachusetts' unique approach to prenuptial agreement enforcement, requiring judges to evaluate whether enforcement would be conscionable given circumstances that developed during the marriage, even if the agreement was valid when signed. In the landmark 2015 case Kelcourse v. Kelcourse, the Massachusetts Appeals Court struck down a prenup under the second look test because the husband's subsequent neglect of the marital residence constituted a change in circumstances beyond what parties contemplated, and enforcement would have left the wife with insufficient property and income to support herself. The 2023 decision Rudnick v. Rudnick further refined the standard, finding a prenup unconscionable where the wife waived alimony with the understanding she would receive appreciation in real estate acquired during marriage, but the husband took title to properties in a manner that placed them out of the wife's reach. Courts examine whether one spouse will be left without sufficient property, maintenance, or appropriate employment to support themselves, considering factors like the marriage duration (Massachusetts marriages average 7.2 years), changes in health or employability, birth of children, career sacrifices, and significant wealth accumulation that one party cannot access due to the prenup's terms.

Recent Case Law: 2024-2026 Developments

While Massachusetts has not enacted major legislative changes to prenuptial agreement law in 2024-2026, recent case law developments continue to shape enforceability standards and interpretation of the second look doctrine. The 2024 decision in Openshaw v. Openshaw expanded the definition of "need" in alimony calculations to include the ability to continue saving after divorce if the couple had a regular habit of saving during marriage, potentially impacting how courts evaluate alimony waiver provisions in prenuptial agreements during the second look analysis. The 2024 Cavanagh v. Cavanagh ruling established that calculating support is now a mandatory multi-step comparison where judges must run calculations twice—once calculating alimony first, then again calculating child support first—which may influence how courts assess the overall fairness of prenuptial agreement terms that waive or limit alimony. Since the 1980s, Massachusetts appellate case law has moved steadily toward enforcing prenuptial agreements as contracts with stricter terms, and as of 2026, most Probate and Family Court judges will only invalidate agreements if enforcement would leave a party in fairly extreme financial distress rather than simply reducing their standard of living.

How to Create an Enforceable Prenup

To create an enforceable prenuptial agreement in Massachusetts, couples must follow a structured process that satisfies both the first look and second look requirements. Begin discussions 6 to 12 months before the wedding to avoid time pressure claims. Each party should retain separate family law attorneys experienced in Massachusetts prenuptial agreement practice—this typically costs $2,500 to $5,000 per party but significantly strengthens enforceability. Both parties must prepare complete financial disclosures including bank statements, tax returns, investment account statements, property deeds, business valuations, retirement account statements, and debt documentation. Attorneys draft the agreement based on the parties' goals, typically including property division provisions, alimony waivers or limitations, separate property designations, and debt responsibility clauses. Both parties review the draft with their attorneys, who explain what legal rights they are waiving under M.G.L. Chapter 208, Section 34 and how the terms compare to what they would receive without the agreement. After negotiation and revision, both parties sign the agreement voluntarily, ideally 60 to 90 days before the wedding, with signatures notarized to create a self-authenticating document. The final agreement should include recitals confirming voluntary signing, full disclosure, independent counsel, adequate time for review, and understanding of waived rights.

Property Division Provisions

Prenuptial agreements in Massachusetts can establish how property will be divided upon divorce, overriding the equitable distribution framework that would otherwise apply under M.G.L. Chapter 208, Section 34. Couples may designate specific assets as separate property that will remain with the original owner regardless of marriage duration, or they may agree that certain assets acquired during marriage will be treated as one spouse's separate property rather than marital property subject to division. Massachusetts courts have enforced provisions allocating 50% to 100% of marital assets to one spouse, agreements that give each spouse only what they brought into the marriage regardless of contributions during the marriage, and terms that completely waive rights to property acquired by the other spouse during marriage. Property division provisions should specifically identify assets by description, account number, or location ("the real property located at 123 Main Street, Boston, MA") rather than using vague language like "all assets." Prenups can also address business interests, with 67% of Massachusetts prenups protecting closely-held businesses by designating them as separate property, establishing business valuation methods, or requiring buyout payments if the marriage ends.

Alimony Waivers and Limitations

Massachusetts prenuptial agreements can include complete waivers of alimony (spousal support) or provisions that limit alimony duration, amount, or both, though these provisions remain subject to the second look doctrine's unconscionability analysis. Under the 2011 Alimony Reform Act codified in M.G.L. Chapter 208, Section 48, Massachusetts courts may award four types of alimony: general term alimony (durational limits based on marriage length), rehabilitative alimony (up to 5 years), reimbursement alimony (repaying contributions to education or training), and transitional alimony (up to 3 years). Prenuptial agreements may waive all alimony rights, cap monthly amounts ("alimony shall not exceed $2,000 per month"), limit duration ("alimony shall terminate after 2 years"), or establish formulas based on marriage length or income differentials. The 2024 Openshaw v. Openshaw decision expanded what constitutes "need" to include maintaining savings habits from the marriage, potentially making courts less willing to enforce complete alimony waivers where one spouse has significantly reduced earning capacity or made career sacrifices. Massachusetts courts will not enforce alimony waivers if the second look reveals that enforcement would leave one party without sufficient means to support themselves, particularly in marriages lasting over 10 years where one spouse sacrificed career advancement for family responsibilities.

Modifying or Revoking a Prenuptial Agreement

Massachusetts prenuptial agreements can be modified or revoked after marriage through a written postnuptial agreement signed by both parties with the same formalities required for prenups, including voluntary execution, full financial disclosure, and conscionability at both signing and enforcement. Most prenuptial agreements include language stating they can only be modified or revoked by written agreement signed by both parties, preventing claims that oral agreements or conduct during marriage superseded the written prenup. Automatic modification clauses ("this agreement shall be void if the marriage lasts more than 10 years") are enforceable if clearly stated, as are escalator clauses that increase property rights based on marriage duration or other milestones. Unilateral revocation is not permitted—one party cannot simply decide to cancel the prenup without the other party's written consent. Some life events may make courts more willing to find prenups unconscionable under the second look doctrine, effectively modifying enforcement, including birth of children who require one parent to leave the workforce, serious illness or disability that affects earning capacity, or significant wealth accumulation during marriage that the prenup prevents one party from accessing. If couples want to modify their prenup after marriage, they should work with family law attorneys to draft a postnuptial agreement that satisfies the same disclosure and voluntariness requirements as the original prenup.

Prenups and Retirement Accounts

Retirement accounts including 401(k) plans, 403(b) plans, traditional and Roth IRAs, pension plans, and deferred compensation are among the most valuable marital assets in Massachusetts divorces, with the average Massachusetts couple holding $247,000 in retirement savings by age 55. Prenuptial agreements can address retirement accounts by designating accounts owned before marriage as separate property, specifying what portion of retirement contributions and appreciation during marriage will be considered marital property, establishing how defined benefit pensions will be valued and divided, or completely waiving rights to the other spouse's retirement accounts regardless of when contributions occurred. Under federal law, 401(k) plans and pensions are subject to division via Qualified Domestic Relations Order (QDRO) regardless of prenuptial agreement terms, but the prenup determines what percentage each spouse receives. Massachusetts follows the "time rule" formula for dividing pensions absent an agreement, multiplying the total pension benefit by a fraction equal to months of marriage during employment divided by total months of employment, but prenuptial agreements can override this formula. Prenups commonly include provisions stating "each party waives any claim to retirement accounts owned by the other party, including all contributions, appreciation, and benefits accrued before or during the marriage," though courts examine whether such waivers remain conscionable at divorce, particularly in long-term marriages where one spouse has minimal retirement savings due to career sacrifices.

Business Protection Provisions

Business owners use prenuptial agreements to protect closely-held companies, professional practices, partnerships, and entrepreneurial ventures from being divided or subject to claims by a non-owner spouse in divorce. Massachusetts prenups can designate a business as separate property that remains 100% owned by the founding spouse, establish that only the business's pre-marital value is separate property while appreciation during marriage is marital property subject to division, create valuation methods (fair market value, book value, or capitalization of earnings) to determine the business's worth if division occurs, or require buyout payments rather than ownership interests if the marriage ends. The 2018 case Baccanti v. Morton established that business valuation timing matters, with courts required to value businesses as of the date closest to trial rather than the date of separation. Approximately 67% of Massachusetts prenuptial agreements include business protection provisions, reflecting the high concentration of professional practices, technology startups, and family businesses in the state. Business prenup provisions should address what happens if the non-owner spouse contributes labor to the business during marriage (sweat equity), how business debts and liabilities will be handled, and whether the non-owner spouse can receive compensation for indirect contributions that increased business value.

Prenups vs. Postnups: Key Differences

Prenuptial agreements are signed before marriage while postnuptial agreements are signed after marriage, but both serve similar functions in Massachusetts of defining property rights and alimony obligations in the event of divorce. The key legal difference is consideration—prenuptial agreements are supported by the mutual promises to marry, while postnuptial agreements require independent legal consideration such as reconciliation after separation, resolution of marital disputes, or mutual releases of claims. Massachusetts courts apply the same two-look enforceability test to postnuptial agreements, examining whether they were fair and reasonable at execution and conscionable at enforcement, but courts scrutinize postnups more carefully because the parties are already married when signing and may have unequal bargaining power. Postnuptial agreements cost approximately $3,000 to $12,000 for complete attorney services for both parties, similar to prenup costs. Couples may choose postnuptial agreements if they did not create a prenup before marriage, if circumstances changed significantly after marriage (inheritance, business windfall, or retirement), if they are reconciling after separation and want to resolve financial issues, or if they want to modify or replace an existing prenuptial agreement. Under M.G.L. Chapter 209, Section 25, both prenuptial and postnuptial agreements must be in writing to be enforceable, as oral agreements regarding property rights are invalid.

Common Mistakes to Avoid

The most common mistakes that render Massachusetts prenuptial agreements unenforceable include incomplete financial disclosure where one party fails to reveal significant assets like real estate holdings, investment accounts, or business interests, making it impossible for the other party to make an informed decision. Signing too close to the wedding date (within 14-30 days) raises duress concerns that the agreement was not entered voluntarily, even if both parties claim they were willing. Using a single attorney for both parties creates a conflict of interest that courts view as evidence of unfair bargaining, as one attorney cannot adequately advocate for competing interests. Including child custody or child support provisions violates Massachusetts public policy and may invalidate the entire agreement, not just the prohibited provisions. Using vague language like "all property shall remain separate" without specifically identifying assets creates ambiguity that courts resolve against the drafter. Failing to attach financial disclosure documents (bank statements, tax returns, property deeds) as exhibits means no evidence exists that both parties had complete information at signing. Creating unconscionable provisions that leave one party destitute virtually guarantees the agreement will fail the second look test, such as complete alimony waivers in 20-year marriages where one spouse sacrificed career advancement. Not updating prenuptial agreements after major life changes (birth of children, career changes, wealth accumulation) increases the likelihood courts will find enforcement unconscionable under changed circumstances.

Prenups and Inherited Property

Inherited property in Massachusetts is potentially subject to division upon divorce under M.G.L. Chapter 208, Section 34 because Massachusetts does not recognize separate property, but prenuptial agreements can protect inheritances by designating them as the inheriting spouse's separate property. Without a prenup, Massachusetts courts have authority to divide all property owned by either spouse regardless of when or how it was acquired, including gifts and inheritances, though courts typically award inherited property to the inheriting spouse unless marital funds were commingled with the inheritance or used to improve inherited assets. Prenuptial agreements can protect future inheritances (assets not yet received) by stating "all property inherited by either party, whether before or during the marriage, shall remain that party's separate property and shall not be subject to division upon divorce." If inherited property is commingled with marital assets—depositing inheritance money into a joint bank account, using inheritance funds for the marital home down payment, or transferring inherited real estate to joint ownership—the inheritance may lose its separate property character and become marital property subject to division. Massachusetts courts apply tracing rules to determine what portion of commingled assets originated from inheritance versus marital contributions, but prenuptial agreements can override these rules by stating that commingling does not change inherited property's separate status. The 2025 case law regarding Massachusetts' treatment of future inheritances emphasizes that courts maintain authority to consider expected inheritances when dividing property, but prenuptial agreements can contractually waive claims to anticipated inheritances.

How Courts Interpret Prenuptial Agreements

Massachusetts courts interpret prenuptial agreements as contracts subject to standard contract law principles, meaning judges examine the agreement's plain language, consider the parties' intent at the time of signing, and resolve ambiguities against the drafter (typically the party seeking enforcement). The paramount consideration is whether enforcement would be fair and reasonable at execution and conscionable at divorce, requiring courts to look beyond the agreement's four corners to examine surrounding circumstances, financial disclosures, negotiation processes, and changed conditions during marriage. Under the rule established in DeMatteo v. DeMatteo, Massachusetts courts will enforce prenuptial agreements even if one party will no longer enjoy the same standard of living post-divorce, provided that party received something "modest" and knew about the other party's substantial holdings when entering the agreement. However, the 2015 Kelcourse decision and 2023 Rudnick decision demonstrate that courts will invalidate agreements where enforcement would leave one party without sufficient property, maintenance, or appropriate employment to support themselves due to circumstances that developed during the marriage. Judges have substantial discretion in applying the second look test, examining factors like marriage duration (Massachusetts marriages average 7.2 years), whether children were born, whether one spouse made career sacrifices, whether significant wealth was accumulated, whether health conditions changed, and whether the dependent spouse has realistic employment opportunities. Courts will not rewrite prenuptial agreements but may decline to enforce specific provisions while upholding the remainder, such as invalidating an alimony waiver while enforcing property division terms.

Do Prenups Expire in Massachusetts?

Prenuptial agreements in Massachusetts do not automatically expire based on marriage duration unless the agreement itself includes a sunset clause specifying automatic termination or modification after a certain number of years. Common sunset provisions state that the prenup becomes void if the marriage lasts more than 10 years, or that property rights and alimony waivers escalate based on marriage length ("after 5 years, each party shall receive 25% of marital property; after 10 years, each party shall receive 40% of marital property"). Without a sunset clause, prenuptial agreements remain in effect indefinitely regardless of how long the marriage lasts, though the second look doctrine means longer marriages increase the likelihood courts will find enforcement unconscionable. Massachusetts case law shows that judges are more reluctant to enforce prenups in marriages lasting 15-20+ years where one spouse sacrificed career advancement, particularly where the agreement contains complete alimony waivers or highly unequal property division terms. Sunset clauses are generally enforceable if clearly drafted, providing certainty that the prenup's harsh terms will not apply in long-term marriages. Couples who want their prenup to remain fully enforceable regardless of marriage duration should avoid including sunset clauses, though this increases the risk that courts will decline enforcement under the second look unconscionability analysis. Some estate planning attorneys recommend sunset clauses at 15-20 years as a compromise that protects assets in short-term marriages while acknowledging that long-term marriages create stronger equitable claims to shared property and support.

Prenups and Debt Protection

Prenuptial agreements can protect spouses from responsibility for each other's pre-marital debts, student loans, credit card balances, business liabilities, and tax obligations by explicitly stating that each party remains solely responsible for debts incurred before marriage. Without a prenup, Massachusetts courts may allocate debt responsibility during divorce under M.G.L. Chapter 208, Section 34, potentially requiring one spouse to pay a portion of the other spouse's pre-marital debts if equitable considering all circumstances. Student loan debt is a major concern for Massachusetts couples, with the average Massachusetts resident holding $37,750 in student loans as of 2026, making debt protection provisions among the most commonly requested prenup terms. Effective debt protection provisions specifically identify pre-marital debts by creditor and approximate amount ("ABC Bank credit card, approximately $15,000; XYZ Student Loans, approximately $45,000"), state that each party will remain solely responsible for their pre-marital debts, require each party to indemnify and hold harmless the other from claims related to their separate debts, and address how debt incurred during marriage will be classified and allocated. Prenups should also address business debts and liabilities if one spouse owns a business, stating whether the non-owner spouse has any responsibility for business debts incurred before or during marriage. Massachusetts creditors can generally only pursue the debtor spouse's separate property and the debtor's share of marital property for pre-marital debts, but prenuptial agreements provide additional contractual protection that one spouse will not be required to use their separate assets to satisfy the other spouse's obligations.

Enforcing a Prenuptial Agreement in Divorce

When a Massachusetts divorce case involves a prenuptial agreement, the spouse seeking to enforce the prenup must prove by preponderance of the evidence that the agreement satisfies both the first look (fair and reasonable at execution) and second look (conscionable at enforcement) requirements. The enforcing party must present evidence that both parties signed voluntarily without duress or coercion, typically through testimony and affidavits. Both parties provided full financial disclosure at the time of signing, documented through financial affidavits, bank statements, tax returns, and other disclosure documents attached to the prenup. Both parties had adequate time to review the agreement before signing, usually demonstrated by showing the agreement was signed 60-90 days before the wedding. Both parties had meaningful opportunity to consult with independent legal counsel, evidenced by legal bills, attorney certifications, or testimony from the attorneys who represented each party. The agreement's terms are not unconscionable at the time of divorce given circumstances that developed during the marriage. If the challenging spouse can demonstrate any of these elements are missing, the court may decline to enforce the agreement. Massachusetts judges apply de novo review to prenuptial agreement enforceability, meaning they independently evaluate all evidence rather than deferring to the agreement's terms. In approximately 15-20% of contested Massachusetts divorce cases involving prenups, courts decline full enforcement due to unconscionability concerns, partial invalidity of specific provisions, or failure to meet first look requirements. Even if a prenup is deemed unenforceable, the court still must divide property and determine alimony under M.G.L. Chapter 208, Section 34, considering all relevant factors including what the prenup specified, the parties' expectations, and equitable principles.

Prenups for Second Marriages

Prenuptial agreements are especially important for second marriages in Massachusetts because 67% of second marriages involve at least one spouse with children from a previous relationship, significant assets accumulated during the first marriage, or ongoing financial obligations like alimony or child support payments. Second marriage prenups typically protect inheritance rights for children from the first marriage by designating certain assets as separate property that will pass to children rather than the new spouse, establish that alimony payments to a former spouse remain one party's sole responsibility, protect retirement accounts and pensions accumulated during the first marriage, and clarify that children from the first marriage are primary beneficiaries of life insurance policies and estate plans. Under M.G.L. Chapter 191, Section 15, a surviving spouse is entitled to an elective share of at least one-third of the deceased spouse's estate even if the will specifies otherwise, but prenuptial agreements can waive elective share rights, ensuring assets pass to children from the first marriage rather than the new spouse. Second marriage prenups should also address Social Security benefits, as divorced spouses married at least 10 years can claim benefits based on their ex-spouse's earnings record, and remarriage generally terminates those benefits. Massachusetts courts enforce second marriage prenups using the same two-look test as first marriage prenups, but judges typically give greater deference to agreements between older, financially sophisticated parties who have prior divorce experience and understand the legal implications of waiving property rights.

Finding a Prenuptial Agreement Attorney

Selecting the right attorney to draft or review a Massachusetts prenuptial agreement is critical to creating an enforceable agreement that protects your interests while satisfying the state's voluntariness and fairness requirements. Look for family law attorneys who are certified specialists in matrimonial law or who dedicate at least 75% of their practice to divorce and family law matters, as prenuptial agreement law requires specific expertise in Massachusetts equitable distribution principles, the second look doctrine, and recent case law developments. The Massachusetts Bar Association Lawyer Referral Service and local bar associations maintain directories of family law attorneys, though personal referrals from financial advisors, estate planning attorneys, or friends who have created prenups often yield the best results. During initial consultations (typically $250-$500 for 1-2 hours), ask about the attorney's experience drafting prenuptial agreements (target: 10+ prenups per year), their familiarity with the two-look test and second look doctrine case law, their approach to ensuring enforceability while protecting your interests, and their fee structure (flat fee versus hourly billing). Expect to pay $2,000 to $5,000 for attorney fees if you are the party whose attorney is drafting the agreement, or $500 to $2,000 if you are reviewing an agreement drafted by your fiancé's attorney. Both parties should have separate attorneys—attempting to save money by sharing one attorney creates a conflict of interest that may invalidate the agreement. Massachusetts attorneys are required to explain what legal rights you are waiving under M.G.L. Chapter 208, Section 34, how the prenup's terms compare to what you would receive without an agreement, and whether the proposed terms are likely to survive second look scrutiny at divorce.

Frequently Asked Questions

Are prenuptial agreements enforceable in Massachusetts?

Yes, Massachusetts courts enforce prenuptial agreements that are fair and reasonable at execution and conscionable at enforcement under the two-look test established in Massachusetts case law. Under M.G.L. Chapter 209, Section 25, prenups must be in writing, signed voluntarily with full financial disclosure, and cannot leave one party without sufficient means to support themselves given circumstances that developed during marriage.

Does Massachusetts require separate attorneys for prenups?

No, Massachusetts law does not legally require each party to have separate attorneys, but having independent counsel for both parties is strongly recommended and significantly improves enforceability. Two parties cannot share one attorney due to conflict of interest rules, and if only one party has an attorney, the other must have meaningful opportunity to seek independent counsel before signing.

How much does a prenup cost in Massachusetts?

Massachusetts prenuptial agreements cost an average of $2,500 to $10,000 for complete attorney services for both parties, with most couples spending approximately $8,000 as of 2026. Individual attorney fees range from $2,000 to $2,500 for drafting and $500 for review services, with complex agreements involving business valuations or multiple properties costing $15,000 to $25,000 or more.

Can a prenup waive alimony in Massachusetts?

Yes, Massachusetts prenuptial agreements can include complete alimony waivers or provisions limiting alimony amount and duration, though these provisions remain subject to the second look doctrine's unconscionability analysis. Courts will not enforce alimony waivers if enforcement would leave one party without sufficient means to support themselves, particularly in marriages lasting over 10 years where one spouse sacrificed career advancement.

How close to the wedding can you sign a prenup?

Massachusetts law does not specify a minimum time period between signing and the wedding date, but best practice requires executing prenuptial agreements 60 to 90 days before the wedding to avoid duress claims. Agreements signed within 7 to 14 days of the wedding raise red flags that one party faced time pressure, potentially invalidating the agreement under the first look voluntariness analysis.

Can prenups address child custody or child support?

No, Massachusetts prenuptial agreements cannot include provisions limiting child support or predetermining child custody arrangements because courts must always decide these matters based on the child's best interests at the time of divorce. Including child-related provisions may invalidate the entire prenup or result in courts severing and refusing to enforce those specific terms.

What is the second look doctrine in Massachusetts?

The second look doctrine requires Massachusetts judges to evaluate whether enforcing a prenuptial agreement would be conscionable given circumstances that developed during the marriage, even if the agreement was valid when signed. Courts will not enforce agreements if one party would be left without sufficient property, maintenance, or appropriate employment to support themselves due to changed circumstances like birth of children, health problems, or career sacrifices.

Do prenups expire after a certain number of years?

No, Massachusetts prenuptial agreements do not automatically expire based on marriage duration unless the agreement includes a sunset clause specifying automatic termination or modification after a certain number of years. Without a sunset provision, prenups remain in effect indefinitely, though longer marriages increase the likelihood courts will find enforcement unconscionable under the second look doctrine.

Can you modify a prenup after marriage?

Yes, Massachusetts prenuptial agreements can be modified or revoked after marriage through a written postnuptial agreement signed by both parties with the same formalities as prenups, including voluntary execution, full financial disclosure, and conscionability at signing and enforcement. Most prenups include language requiring written agreement by both parties for modification, preventing claims that oral agreements or conduct during marriage superseded the written prenup.

What happens if we don't disclose all assets?

Failure to provide full financial disclosure of assets, debts, and income can render a Massachusetts prenuptial agreement unenforceable under the first look test, as courts require evidence that both parties had sufficient information to make an informed decision. Incomplete disclosure—failing to reveal significant assets like investment accounts, real estate holdings, or business interests—gives the non-disclosing party grounds to challenge the agreement's validity during divorce proceedings.

Sources

• What is the Current State of the Law on Prenuptial Agreements in Massachusetts?
• Massachusetts General Laws Chapter 209, Section 25
• Are Prenuptial Agreements Enforceable in Massachusetts?
• Massachusetts Prenuptial Agreement Cost (2026)
• Probate and Family Court filing fees | Mass.gov
• Massachusetts General Laws Chapter 208, Section 34
• 2023 Decision Offers Key Insights for Massachusetts Prenuptial Agreements
• The Second Look Test Assures A Fair Prenuptial Agreement