Massachusetts Child Support Calculator 2026
Massachusetts reads the basic child support amount from a state schedule, which this page does not reproduce. Enter both parents' incomes to see each parent's share of combined income, then use the official Massachusetts source linked below for the schedule amount. Calculated privately in your browser.
Estimate only — the court or the child support agency sets the order. Official source: Massachusetts 2025 Child Support Guidelines and worksheet.
Massachusetts uses the income shares model for child support: a basic obligation is read from the state schedule using both parents' combined income and the number of children, then divided by each parent's share of that income. This page calculates the shares; the schedule amount comes from the official Massachusetts source.
How Massachusetts Child Support Is Calculated
The National Conference of State Legislatures lists Massachusetts among the income shares states. The calculation has four steps: add both parents' incomes; find the basic obligation for that combined income and number of children in the Massachusetts schedule; divide it between the parents in proportion to their incomes; then apply the worksheet's adjustments.
The Massachusetts worksheet defines which income counts and which deductions are allowed, so enter the figure it asks for rather than take-home pay.
| Step | On this page? |
|---|---|
| Each parent's share of combined income | Yes — exact arithmetic |
| Basic obligation from the Massachusetts schedule | No — read it from the official source |
| Health insurance and childcare split | No — handled on the official worksheet |
| Parenting-time adjustment | No — made on the worksheet or by the court |
| Low-income and high-income rules | No — set by the Massachusetts guidelines |
Worked Example: Massachusetts Income Shares
With the default figures, the paying parent has $5,000 a month and the other parent $3,000. Combined income is $8,000, so the paying parent's share is 62.5% and the other parent's is 37.5%. To finish the calculation you would look up $8,000 of combined income and 2 children in the Massachusetts schedule and apply those shares.
Insurance, Childcare and Parenting Time in Massachusetts
Massachusetts deals with the children's health insurance and childcare inside its own worksheet, so this page does not estimate those amounts.
Any adjustment for parenting time (overnights) is made on the state worksheet or by the court and is not estimated here.
Estimate Only: Who Sets the Massachusetts Order
This page gives an estimate only — the court or the state child support agency sets the order, and either can depart from the guideline where the law allows. Before relying on any figure, check the amount against the Massachusetts 2025 Child Support Guidelines and worksheet.
If your income, the parenting schedule or the children's needs change, ask the court or the agency to review the order, and keep paying the ordered amount until it is changed. Last updated: October 2026.
Frequently Asked Questions
How is child support calculated in Massachusetts?
Massachusetts uses the income shares model. A basic obligation is read from the Massachusetts schedule using both parents' combined income and the number of children, then divided between the parents in proportion to their incomes. Insurance, childcare and parenting time are handled on the state worksheet, and a court or the child support agency sets the final amount.
Does this calculator give the Massachusetts guideline amount?
No. It calculates each parent's share of combined income. The basic obligation comes from the Massachusetts schedule, which this page does not reproduce. Use the official Massachusetts source linked on the page for the schedule amount.
What income does Massachusetts use for child support?
The Massachusetts worksheet defines which income counts and which deductions are allowed. Enter the monthly figure the official worksheet asks for, for both parents, rather than take-home pay.
How are health insurance and childcare handled in Massachusetts?
Massachusetts deals with the children's health insurance and childcare inside its own worksheet, so this page does not estimate those amounts.
Who decides the final child support amount in Massachusetts?
A court or the state child support agency sets the order. Guideline figures are a starting point, and the decision-maker can depart from them where the law allows. An online estimate, including this one, is not an order.