Massachusetts Alimony Laws in 2026 and What a Prenup Can Waive

How Does Alimony Work in Massachusetts in 2026?

Alimony in Massachusetts is court-ordered support paid by a spouse who has the ability to pay to a spouse in need of support, for a reasonable length of time. That definition comes from M.G.L. c. 208, section 48, part of the Alimony Reform Act of 2011, which took effect on March 1, 2012 and still sets the rules in 2026.

If you've seen headlines about a "new" alimony law, read them carefully. The statutory framework for duration caps, the amount guideline, and the four alimony types is the same one the legislature adopted in 2011. What has shifted is the context around it:

• Tax treatment. Under the federal Tax Cuts and Jobs Act of 2017, alimony under a divorce or separation agreement executed after December 31, 2018 (or modified after that date) is no longer deductible by the payor or taxable to the recipient. Massachusetts adopted the same treatment for state returns starting with the 2022 tax year, as the state law library's alimony page explains.
• Cavanagh v. Cavanagh (2022). The Supreme Judicial Court (SJC) held that when both child support and alimony are possible, a judge must calculate the order both ways (alimony first and child support first) and choose the most equitable result.
• Openshaw v. Openshaw (2024). The SJC recognized that a family's custom of saving can be part of the marital lifestyle a recipient spouse may need support to maintain.

The four types of alimony at a glance

One practical point: only divorcing or divorced spouses can ask for alimony. If the original divorce judgment didn't mention alimony at all, a spouse can file a complaint for alimony later, according to the Probate and Family Court's guide to alimony types.

Who Qualifies for Alimony in Massachusetts?

No one qualifies automatically. A spouse has to request alimony, and the judge then weighs the statutory factors in section 53(a) against the recipient's need and the other spouse's ability to pay.

Under section 53, the court must consider:

• Length of the marriage
• Age of each spouse
• Health of each spouse
• Income, employment, and employability of both spouses, including employability through reasonable diligence and additional training
• Economic and non-economic contributions each spouse made to the marriage
• The marital lifestyle
• Each spouse's ability to maintain that lifestyle
• Lost economic opportunity as a result of the marriage
• Any other factors the court considers relevant and material

How "length of the marriage" is measured

The statute defines length of the marriage as the number of months from the date of legal marriage to the date a divorce complaint is served. There's an important exception for couples who live together first: the court may increase the length of the marriage if the couple's economic partnership began during premarital cohabitation. If you've shared a home and finances for years before your wedding, that history can push you into a longer duration band.

Income can be attributed

Under section 53(f), a court may attribute income to a spouse who is unemployed or underemployed. In plain English, a judge can base alimony on what someone could reasonably earn, not only what they currently earn.

When judges can go beyond the standard limits

Section 53(e) lets a court deviate from the amount and duration limits for general term and rehabilitative alimony, but only with written findings. Grounds can include:

1. Advanced age, chronic illness, or unusual health circumstances of either spouse
2. Tax considerations
3. Whether the payor provides health insurance for the recipient, and its cost
4. Whether the payor has been ordered to carry life insurance for the recipient, and its cost
5. Unearned income (such as interest, dividends, and investment income) from assets not divided in the divorce
6. Significant premarital cohabitation with an economic partnership, or a long marital separation
7. A spouse's inability to self-support because of physical or mental abuse by the payor
8. A spouse's inability to self-support because of a deficiency of property, maintenance, or employment opportunity
9. Any other relevant factor, with written findings

When a recipient asks a court to extend general term alimony past the durational limit, the recipient bears the burden of showing deviation is required in the interests of justice. The Massachusetts Bar Association summarizes this holding from George v. George (2016).

Massachusetts Alimony Calculator: Estimating Amount and Duration

There's no official state alimony calculator in the sources reviewed for this guide. Instead, you can estimate the outer limits with two statutory rules: the amount guideline (the lesser of need or 30 to 35% of the gross income difference) and the duration bands tied to marriage length.

Step 1: Estimate the maximum duration

Under section 49, general term alimony for a marriage of 20 years or less must end by a set date unless the court makes a written interests-of-justice finding.

Watch the edges of each band. A marriage of exactly 20 years falls in the 80% band, because indefinite alimony is available only for a marriage longer than 20 years. Likewise, a marriage of exactly 5 years takes the 50% cap.

Step 2: Estimate the amount range

Section 53(b) says general term alimony should generally not exceed the recipient's need or 30 to 35% of the difference between the spouses' gross incomes at the time of the order.

Worked example. If one spouse earns $200,000 and the other earns $60,000, the difference is $140,000. At 30 to 35%, the guideline ceiling is $42,000 to $49,000 a year, or roughly $3,500 to $4,083 a month, per divorce.law's 2026 Massachusetts guide.

That ceiling isn't the whole story. The percentages were set when alimony was deductible to the payor and taxable to the recipient. Since the tax change, practitioners and judges generally assume a lower range, as the Chambers Family Law 2026 guide notes. Divorce.law estimates the practical range at about 22 to 28% of the income difference. Treat that as a practitioner estimate, not a statutory number.

What gets left out of income

Under section 53(c), the court excludes:

• Capital gains, dividend, and interest income from assets already divided in the divorce
• Gross income the court already used to set a child support order

If you have children, the Cavanagh decision also applies. The 2025 Massachusetts Child Support Guidelines require judges to run both orderings and compare the base awards and tax consequences before choosing the most equitable order.

Caps are ceilings, not entitlements

These numbers set upper limits. A court can order less, order a shorter term, or order no alimony at all, depending on the section 53(a) factors. A judge can also go above the limits with written findings. So a calculator-style estimate gives you a planning range, not a prediction.

Can a Prenup Waive Alimony in Massachusetts?

Yes, generally. Massachusetts has allowed couples planning to marry to settle alimony and property rights in a prenuptial agreement since Osborne v. Osborne (1981), and a valid agreement isn't unenforceable just because it's one-sided. A court can still decline to enforce terms that are unconscionable when the marriage ends.

The two-look test from DeMatteo (2002)

In DeMatteo v. DeMatteo, the SJC described a two-stage review.

First look: was the agreement fair and reasonable when signed? The court asks whether:

1. The agreement contains a fair and reasonable provision for the contesting spouse, measured at the time of signing
2. The contesting spouse was fully informed of the other's worth before signing, or had (or should have had) independent knowledge of it
3. The waiver is set out in the agreement

The court also looks for fraud, failure to disclose assets fully and fairly, or unfair advantage taken of the relationship. Absent those problems, an agreement will be valid unless its terms essentially strip away the very status of marriage.

Second look: is it conscionable at the time of divorce? A judge may relieve a spouse from a valid agreement only if, because of circumstances during the marriage, enforcement would leave that spouse without sufficient property, maintenance, or appropriate employment to support themselves. The SJC gave examples: unanticipated mental or physical deterioration of the contesting spouse, or inflation eroding agreed support payments so badly that it defeats what the couple intended. The court described the second look as making sure the agreement has the same vitality at divorce that the parties intended when they signed it.

Planning alimony terms together

People often search for "how to avoid alimony in Massachusetts." In a prenup, the healthier framing is deciding together what fair support looks like for your partnership. Common approaches include:

• Full waiver. Both partners agree neither will seek alimony.
• Cap. Support is allowed but limited to a set dollar amount or percentage.
• Step-up or tiered terms. Support increases with the length of the marriage.
• Defined duration. Support lasts for a fixed number of months or years.
• Formula. Support is calculated from incomes at the time of divorce.

Terms that anticipate change may help an agreement keep the vitality you intended. The DeMatteo agreement, which the SJC upheld, included annual support with a cost-of-living adjustment and medical insurance for the wife. Provisions like those address two of the second-look concerns the court named.

What a prenup doesn't settle: child support

A prenup can address alimony and property. Child support is different. Massachusetts courts set it under the child support guidelines based on the children's needs and the public policy that children be supported as completely as possible by their parents' resources. Couples generally shouldn't expect a prenup to fix child support in advance.

No prenup term carries guaranteed enforceability. Courts look at how the agreement was made and what it does at the time of divorce.

How to Plan Alimony Terms in a Massachusetts Prenup, Step by Step

The most durable alimony terms usually come from early, open conversations, full disclosure, and separate legal advice for each partner. Here's a practical sequence.

1. Talk about goals as a couple. Share how you each see careers, children, caregiving, and money. Many couples find this conversation brings more clarity than any clause.
2. Gather [full financial disclosure](https://meetneptune.com/blog/prenup-financial-disclosure-hidden-assets). List income, assets, debts, and expected inheritances or business interests. DeMatteo turned partly on disclosure: the husband provided tax returns and a net worth statement before signing.
3. Choose an approach. Decide between a waiver, a cap, a formula, a defined term, or a tiered structure.
4. Each partner retains independent counsel. Separate Massachusetts family law attorneys can explain what each of you would likely receive without the agreement.
5. Negotiate and draft. Expect drafts to go back and forth. In DeMatteo, the wife's attorney rejected the first draft and negotiated higher support with a cost-of-living adjustment.
6. Allow time to review before the wedding. Building in time reduces any later claim of pressure or unfair advantage.
7. Sign and keep records. Keep the signed agreement, financial disclosures, and drafts together.

Decision points to discuss

• Marriage length. Should support grow the longer you're married, much like the statute's 50% to 80% bands?
• Career breaks and caregiving. If one partner steps back from work to raise children, how should the agreement reflect that lost earning opportunity?
• Cost-of-living adjustments. Should fixed dollar amounts rise with inflation?
• Health insurance. Will either partner provide or fund coverage after a divorce?
• Cohabitation. Should your terms track the statute's 3-month cohabitation rule or set something different?

Recording requirement under M.G.L. c. 209, section 26

Massachusetts has a specific recording rule for prenuptial agreements. Under section 26 of chapter 209, a schedule describing the affected property clearly enough for creditors to identify it should be annexed to the agreement. The agreement and schedule should be recorded in the registry of deeds before the marriage or within 90 days after, and also in each county where related land sits. If it isn't recorded, the contract is void except as between the spouses and their heirs and personal representatives. Confirm with your attorney how this applies to your property.

Where professionals fit in

You don't need a lawyer to learn the rules or to talk through priorities with your partner. You do want qualified help for the legal steps:

• Independent Massachusetts family law attorneys for drafting, review, negotiation, and enforceability analysis. Each partner should have their own.
• A tax professional if your plan involves large support payments or unallocated support, since tax treatment changed for agreements executed after December 31, 2018.
• A financial planner if you want help modeling long-term income, savings, or retirement scenarios.

If you'd like a structured way to do this, Neptune offers a lawyer-led online prenup in which each partner chooses their own independent attorney.

Final checklist

• Confirm you both understand the four alimony types and the 50% to 80% duration bands
• Estimate a support range using the 30 to 35% guideline and the lower practical range
• Exchange complete financial disclosures and attach them to the agreement
• Decide on a waiver, cap, formula, or defined term
• Consider cost-of-living adjustments and health insurance terms
• Address career breaks, caregiving, and premarital cohabitation
• Each partner retains independent counsel
• Leave review time well before the wedding
• Ask your attorney about recording under c. 209, section 26 within 90 days of marriage
• Store signed copies, drafts, and disclosures in a safe place