Child support is a financial obligation that helps meet a child’s needs, and the Massachusetts Child Support Guidelines generally govern how courts calculate support.
Child support is a financial obligation that helps meet a child’s needs, and Massachusetts courts generally calculate support under the Massachusetts Child Support Guidelines. In a divorce, courts often address child support together with custody, parenting time, alimony, and the division of marital property. A Massachusetts divorce lawyer can help address these interconnected issues as part of the broader divorce case.
Child support can also involve much more than determining an initial weekly payment. Parents may disagree about income, childcare and health insurance expenses, additional child-related costs, changes in parenting arrangements, modification of an existing order, enforcement of unpaid support, or how long support should continue. Under Massachusetts law, child support may continue beyond a child’s eighteenth birthday and, in some circumstances, until age 23.
An experienced Massachusetts child support lawyer can help determine which income and other information to include in the calculation, evaluate whether the Guidelines apply straightforwardly or involve more complicated issues, and address disputes involving the establishment, modification, or enforcement of child support.
Massachusetts Child Support Laws
Massachusetts law allows courts to order either parent to provide financial support for a child, with the amount generally determined under the Massachusetts Child Support Guidelines.
Courts may order child support in a divorce, parentage, or custody case. They can also enter temporary support orders while a case remains pending, as well as final orders. The Guidelines establish a presumptive amount of support based on the parents’ financial circumstances and other factors, although courts may deviate from that amount when permitted by law.
Child support is closely related to issues such as child custody and parenting time, but it is a separate legal obligation. The amount of support can also change when the parents’ incomes, parenting arrangements, or other relevant circumstances change.
How Child Support in Massachusetts Works
Massachusetts child support is generally calculated under statewide guidelines that consider both parents’ incomes, the parenting arrangement, certain child-related expenses, and other financial circumstances.
The Massachusetts Child Support Guidelines apply to married and unmarried parents and generally govern temporary, final, and modified child support orders. The Guidelines are used to calculate a presumptive amount of support, although the court may deviate from that amount when the circumstances satisfy the requirements for a deviation.
Income for child support purposes can include many forms of compensation and financial resources, including:
- Employment income, including wages, salaries, overtime, commissions, tips, and bonuses. Courts generally consider compensation from employment broadly, so income may include variable compensation in addition to a parent’s regular base salary.
- Self-employment and business income. For a self-employed parent or business owner, determining income may require examining business revenue and expenses because deductions permitted for tax purposes do not necessarily reduce income for child support purposes.
- Rental income. Income received from rental property may be included in the child support calculation after consideration of appropriate expenses associated with producing that income.
- Pensions and retirement income. Payments received from pensions, retirement plans, annuities, and similar sources may constitute income for purposes of calculating child support.
- Investment and other income. Interest, dividends, capital gains, trust distributions, and other investment-related income may be considered depending on the nature and circumstances of the income.
- Other financial resources included under the Guidelines. The Guidelines define income broadly, and courts may consider other forms of income or financial resources that do not fall neatly within traditional employment categories.
Determining income is not always as simple as looking at a parent’s salary. When appropriate, a court may attribute income to a parent who is unemployed or underemployed or consider other income available to that parent. The calculation can also be affected by the parenting arrangement, childcare and health care costs, other child support obligations, and the interaction between child support and alimony.
Massachusetts Child Support Calculator
Massachusetts courts calculate presumptive child support using a Guidelines worksheet that considers both parents’ incomes, the parenting arrangement, and certain child-related expenses.
The calculation considers factors including the number and ages of the children, each parent’s available income, childcare costs, health insurance expenses, and other support obligations recognized by the Guidelines. Parenting time can also affect how the Guidelines are applied. When the parents’ combined available annual gross income exceeds $450,000, the Guidelines apply to the first $450,000, and the court has discretion to order additional support based on income above that amount.
When a case involves both child support and alimony, the calculation can become more complicated because the same income generally should not be counted twice. The Supreme Judicial Court’s decision in Cavanagh v. Cavanagh provides important guidance on calculating support when both obligations are at issue.
Can Parents Agree on a Child Support Amount?
Parents can agree on child support, but the agreement must be approved by the court before it becomes an enforceable child support order.
The amount calculated under the Massachusetts Child Support Guidelines is presumptively appropriate, but parents may agree to a different amount in appropriate circumstances. The judge must independently determine whether the proposed support arrangement is consistent with the law and the child’s interests. If the agreed amount deviates from the Guidelines, the court must make written findings identifying the presumptive Guidelines amount, explaining the reason for the deviation, and finding that the deviation is consistent with the child’s best interests.
Additional Child-Related Expenses
Massachusetts courts may allocate certain child-related expenses between parents in addition to the basic child support obligation.
These expenses can include:
- Uninsured medical, dental, and vision expenses. The recipient is generally responsible for the first $250 per year in combined routine out-of-pocket and uninsured expenses for the children covered by the order. The court allocates expenses above that amount between the parents and considers extraordinary expenses, such as orthodontia or counseling, separately based on the circumstances.
- Extracurricular activities and camps. Courts may order parents to contribute to extracurricular activities, summer camps that do not qualify as childcare, and related expenses when the costs are affordable and in the child’s best interests.
- Private school and other educational expenses. Courts may allocate private school costs as an additional child-related expense when appropriate. The guidelines address post-secondary educational expenses separately and do not automatically require parents to pay them.
The court has discretion over many of these expenses and considers factors such as affordability and the child’s best interests. Because additional expenses can become substantial, parents should address responsibility for them clearly when negotiating or litigating a child support order.
Modification of Child Support Payments
A Massachusetts court may modify a child support order when the existing order differs from the current Guidelines amount or when certain other qualifying changes in circumstances occur.
Under the 2025 Massachusetts Child Support Guidelines, grounds for modifying an existing child support order include:
- Guidelines inconsistency: The existing child support order differs from the amount that would result from applying the current Guidelines.
- Health insurance changes: Previously ordered coverage is no longer available, has become unreasonably expensive or creates an undue hardship, or appropriate coverage that was previously unavailable has become available.
- Material and substantial changes: Other significant changes in circumstances may justify modification, such as a substantial change in income, employment, or the child’s living arrangements.
A job loss or reduction in income can therefore support a request for modification, but a reduction in earnings does not automatically result in lower child support. The court may examine the circumstances surrounding the income change and, when appropriate, attribute income based on a parent’s earning capacity rather than relying solely on current earnings.
If the existing child support order originally deviated from the Guidelines, additional rules apply. In a modification proceeding, the court must consider whether the circumstances supporting the prior deviation still exist, whether continued deviation remains in the child’s best interests, and whether the Guidelines amount would be unjust or inappropriate.
A modification generally addresses changes in circumstances that affect an existing child support order. When a party instead contends that the court made a legal error in entering a child support judgment or order, different procedures and deadlines may apply, including the possibility of a family law appeal.
Enforcement of Child Support Payments
When a parent fails to pay court-ordered child support, Massachusetts provides several methods for collecting overdue support. These methods also help enforce the existing order.
One common court remedy is a complaint for contempt. You can file the complaint in the Probate and Family Court that issued the child support order. The parent seeking enforcement can ask the court to determine the amount of unpaid support. The court may find the other parent in contempt when the case meets the legal requirements. It can also enter orders that bring the parent into compliance.
At a civil contempt hearing involving unpaid support, the court considers whether the existing order clearly states the obligation. The court also considers whether a party fails to comply with it. Massachusetts law places the burden on the defendant to prove an inability to comply with the existing support order. If the court finds the parent in contempt, available remedies can include payment of the arrears. The court may also establish a payment schedule requiring current support plus payments toward the arrears. Other remedies can include employment-search requirements. In appropriate circumstances, incarceration may apply, subject to an opportunity to purge the contempt.
The Massachusetts Department of Revenue can also enforce child support orders through a variety of administrative and judicial remedies. Depending on the circumstances, enforcement can include income withholding, tax refund interception, liens, or seizure of certain assets. Other measures can include reporting arrears to credit bureaus and additional collection actions.
Attorney’s fees can also be important in a contempt case. When the Probate and Family Court enters a contempt judgment for failure to comply with a monetary support order, a presumption applies. Massachusetts law presumes the person bringing the contempt action qualifies for reasonable attorney’s fees and expenses. The judge must make specific findings to rule otherwise.
When Does Child Support End in Massachusetts?
Child support does not necessarily end when a child turns 18 in Massachusetts. It may continue until age 21 or, in certain circumstances, age 23.
For a child between ages 18 and 21, the court may order or continue child support. The child must live with a parent and principally depend on that parent for support. Under the 2025 Massachusetts Child Support Guidelines, the calculation considers certain children age 18 or older as under age 18. This applies when the child still attends high school. For other eligible children age 18 or older, the Guidelines generally apply a reduced amount of support.
Child support may continue for a child between ages 21 and 23. The child must live with and principally depend on a parent. The child must also attend an educational program, excluding education beyond an undergraduate degree. Whether support should continue after age 18 depends on several factors. These include the child’s age, dependency, living arrangements, and education. The terms of the existing child support order also matter.
How a Massachusetts Child Support Lawyer Can Help
An experienced Massachusetts child support lawyer can help ensure that a support order uses accurate financial information. The order should also properly reflect your family’s circumstances.
Child support cases can become complicated when parents dispute income or disagree about additional expenses. Owning a business or receiving variable compensation may also create challenges when calculating support. Financial complexity may increase when courts consider child support alongside custody, alimony, or other financial issues. An attorney can analyze the financial information and apply the Massachusetts Child Support Guidelines. They can identify issues affecting the calculation and advocate for an appropriate order.
Legal representation can also be important after the court issues an initial order. Whether you need to pursue or defend a modification, an experienced attorney can help you understand your options. An attorney can also help you collect unpaid support or address changes in parenting arrangements. They can help determine whether support should continue for an older child and present relevant evidence to the court.
Turco Legal’s Massachusetts family law attorneys represent parents in child support matters throughout the Commonwealth. If your case is in the Greater Boston area, a Boston child support lawyer can help with child support. They can address these issues as part of a divorce or other family law matter.
To discuss your child support case with a Massachusetts family law attorney, schedule a consultation online or call (617) 657-4878.
Frequently Asked Questions About Child Support in Massachusetts
How do changes in custody arrangements affect child support?
A significant change in a child’s parenting arrangement can affect the amount of child support owed. The Massachusetts Child Support Guidelines account for different parenting arrangements. Changes in primary residence or shared parenting and financial responsibilities may support recalculating the existing order. Changes in legal custody concern responsibility for major decisions affecting a child. They do not necessarily change child support unless other circumstances affect the support calculation.
Can child support agreements be made outside of court?
Parents can negotiate and agree on a child support amount. However, the court must approve the agreement before it becomes an order. The Guidelines amount is presumptively appropriate. If the parties agree to a different amount, the court must review the deviation. The court must determine whether the deviation meets the applicable requirements.
Is a child support lawyer in Massachusetts worth it?
A child support lawyer can provide valuable guidance when parents disagree about income, parenting arrangements, deviations, modifications, or enforcement. Because small differences in income and expenses can affect support over many years, accurate calculations are important. Legal advice can help ensure the court uses accurate information and applies the Guidelines correctly.
How is child support calculated in Massachusetts?
Massachusetts courts generally calculate child support using the 2025 Child Support Guidelines and worksheet. The calculation considers both parents’ incomes, the number and ages of the children, and the parenting arrangement. It also considers certain expenses and support obligations. Additional rules apply when combined available annual income exceeds $450,000.
Can I get retroactive child support in Massachusetts?
Retroactive child support may be available in Massachusetts, but the rules depend on the type and circumstances of the case. In a parentage case under G.L. c. 209C, § 9, a party may petition the court for past support. The court must order support covering the period from the child’s birth to the entry of the support order. The court considers the parent’s ability to pay and any support the parent provides during that period.