Cavanagh v. Cavanagh Continues to Reshape Massachusetts Divorce Law: What Every Parent and Spouse Needs to Know About Child Support and Alimony in 2026

The Supreme Judicial Court’s landmark decision in Cavanagh v. Cavanagh, 490 Mass. 398 (2022) fundamentally changed the way judges calculate support when both child support and alimony are at issue. Three years later, the Massachusetts Appeals Court reinforced those principles in Cavanagh v. Cavanagh, 105 Mass. App. Ct. 620 (2025) by making clear that trial judges who fail to properly apply the required framework risk reversal on appeal.

Combined with the December 1, 2025 Massachusetts Child Support Guidelines, these decisions have significantly changed support litigation throughout the Commonwealth.

At Popovitch Law LLC, we are already seeing these changes play out in Probate and Family Courts across Massachusetts.

The Supreme Judicial Court Changed the Rules

In Cavanagh (2022), the SJC rejected the long-held belief that child support generally displaced alimony.

Instead, the Court recognized that:

• Child support and alimony serve different legal purposes.
• Child support exists to meet the needs of the children.
• Alimony exists to allow a dependent spouse, where appropriate, to maintain a lifestyle reasonably comparable to that enjoyed during the marriage.

Because they address different needs, one does not automatically replace the other.

To resolve the statutory tension, the SJC established a mandatory three-step framework whenever both child support and alimony are being considered.

Step One

Calculate alimony first.

After determining an appropriate alimony award using the statutory factors under G.L. c. 208, §53, child support is then calculated using each party’s post-alimony income.

Step Two

Calculate child support first.

Next, determine what alimony, if any, should be awarded after considering the remaining income and the statutory alimony factors.

Step Three

Compare both outcomes.

The trial judge must determine which result produces the most equitable outcome for the family and explain why that approach was selected.

This framework is not optional.

The Appeals Court Reinforced the Rule

The litigation returned to the Appeals Court after remand.

In 2025, the Appeals Court found that the trial judge still failed to properly apply the SJC’s instructions because the judge continued to consider child support as effectively eliminating the need for alimony. The Appeals Court again vacated portions of the judgment, emphasizing that child support cannot simply be substituted for a proper analysis of alimony.

Cavanagh Also Expanded What Counts as “Income”

One of the most significant aspects of the Cavanagh decisions involves the definition of income.

Massachusetts courts continue to interpret income broadly for child support purposes.

Among the items recognized as income are:

• Employer retirement contributions
• Employer HSA contributions
• Investment income
• Interest
• Dividends
• Certain employment benefits
• Income from multiple jobs where appropriate

For higher-income earners, executives, physicians, business owners, and professionals with substantial investment portfolios, these issues can materially change the support calculation.

If You Are Negotiating a Divorce

Settlement negotiations should include:

• Both Cavanagh calculations;
• Updated child support guideline calculations;
• Tax consequences;
• Future modification risks; and
• Private school and extracurricular expense allocations.

Failing to evaluate both support models can produce an agreement that neither party fully understands.

Cavanagh II Clarifies What “Need” Really Means

Perhaps the most significant aspect of the Appeals Court’s 2025 decision is its clarification of how trial courts determine a spouse’s need for alimony.

On remand, the Probate and Family Court attempted to calculate alimony by applying a percentage of the parties’ income differential. The judge then reduced that amount because the recipient spouse would also be receiving child support.

The Appeals Court held that this was the wrong approach.

Instead, the Court explained that a recipient spouse’s need must first be determined based upon the spouse’s own financial circumstances—not by reducing that need because child support is available. Child support belongs to the children; alimony belongs to the spouse. They serve separate statutory purposes and cannot be conflated.

The Proper Analysis

Under Step One of the Cavanagh framework, the court should first determine:

• the recipient spouse’s actual net income (exclusive of child support);
• the recipient spouse’s reasonable living expenses necessary to maintain, as nearly as possible, the marital standard of living; and
• the amount of alimony necessary to bridge that gap, subject to the payor’s ability to pay and the statutory limitations contained in the Alimony Reform Act.

Only after determining the spouse’s actual need should the court calculate child support using the parties’ post-alimony incomes. The availability of child support cannot be used to artificially reduce the spouse’s demonstrated need during the first step of the analysis.

Rejecting a Formulaic Percentage Approach

The Appeals Court also criticized the trial court for relying on what amounted to an arbitrary percentage-based alimony calculation rather than first determining the recipient spouse’s actual financial need.

Instead of beginning with percentages, practitioners should present:

• a detailed budget;
• evidence of the parties’ marital lifestyle;
• current net earned income;
• reasonable monthly expenses; and
• the shortfall between income and expenses, exclusive of child support.

Only after that factual determination is made should the statutory percentage limitations and ability-to-pay analysis be applied.

This aspect of Cavanagh II fundamentally changes how alimony cases should be litigated.

At Popovitch Law LLC we prepare successful alimony presentations that include a thorough analysis of the recipient spouse’s:

• net earned income;
• actual monthly expenses;
• post-divorce budget;
• marital standard of living;
• demonstrated financial deficit before receipt of child support; and
• the payor’s ability to satisfy that need.

If you are involved in a divorce or modification action involving child support, alimony, or both, Popovitch Law LLC can help you evaluate your rights, develop the appropriate financial analysis, and advocate for an equitable outcome under Massachusetts law.

Click here for Popovitch Law’s 2022 analysis of Cavanagh.