Massachusetts Child Support Calculator
Calculate child support in Massachusetts using the state's official Income Shares Model. Includes custody adjustments, health insurance credits, and childcare deductions.
Massachusetts divorces typically cost 11% less than the national average of $12,900.
Child Support in Massachusetts
- Formula
- Income Shares Model
- Income cap
- None specified
- Equal parenting presumption
- No
- Property system
- Equitable distribution
Child Support Calculator in Massachusetts: What You Should Know
Massachusetts uses the Income Shares Model set out in the Massachusetts Child Support Guidelines, which the courts revise every few years. Both parents' available weekly incomes are combined, the obligation is read from the guideline formula, and each parent covers a proportional share. Massachusetts gives weight to parenting time, with a specific adjustment once the children spend roughly a third or more of their time with the paying parent. The guidelines apply in full up to a set combined income and then leave additional income to the court, with childcare and health coverage costs folded into the calculation.
Key point: Massachusetts applies the Income Shares Model from its periodically revised guidelines, with a parenting-time adjustment once the children spend about a third of their time with the paying parent.
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Locked to Massachusetts on this page.
Use your gross (before-tax) monthly income. If you are paid annually, divide by 12.
Use their gross (before-tax) monthly income. If they are paid annually, divide by 12.
This estimate is for planning purposes only and does not constitute legal or financial advice. Consult a licensed family law attorney in your state for guidance specific to your situation.
Child Support in Massachusetts - Frequently Asked Questions
How is child support calculated in Massachusetts?
Massachusetts uses the Income Shares Model to calculate child support. Both parents' gross incomes are combined, and each parent's share of the total obligation is proportional to their share of the combined income.
Can child support be modified in Massachusetts?
Yes. Either parent can request a child support modification if there has been a substantial change in circumstances, such as a significant change in income, change in custody arrangements, or changes in the child's needs. Courts in Massachusetts typically require a change of at least 15-20% in the support amount to justify modification.
Does custody arrangement affect child support in Massachusetts?
Yes. Parenting time is a significant factor in child support calculations. When a parent has the children for a substantial portion of time (typically 40% or more overnights per year), child support is adjusted to reflect the additional direct costs that parent bears.
Is there an income cap for child support in Massachusetts?
Massachusetts does not set a specific income cap in its child support formula. However, courts have discretion to deviate from the guideline amount in cases with very high incomes.
How long does child support last in Massachusetts?
Child support in Massachusetts typically continues until the child turns 18 or graduates from high school, whichever is later. Support may continue longer if the child has a disability or if the parents agree to extend support for college expenses.
This estimate is for planning purposes only and does not constitute legal or financial advice. Consult a licensed family law attorney in your state for guidance specific to your situation.