Massachusetts Child Support Calculator

How is Child Support Calculated in Massachusetts?

Massachusetts looks at what both you and the other parent earn together to figure out the total amount of support your children need. Your portion of that total amount is based on your share of the combined income.

Understanding MA's Shared Custody Rules

When your child spends at least one-third of the year (about 121 nights) with each parent, the court applies a different formula. This adjustment considers the time each of you has the children, resulting in a more nuanced calculation that often reduces the payment amount for the parent with more parenting time.

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Massachusetts Child Support FAQs


At what age does child support end in MA?

Child support in Massachusetts generally ends when a child turns 18. However, it can be extended to age 21 if the child is principally dependent on and living with a parent, or up to age 23 if the child is enrolled full-time in an undergraduate college or other post-secondary education program.



How is child support calculated if one parent is unemployed in MA?

If a parent is unemployed or underemployed, a Massachusetts court can 'impute' income. This means the judge calculates support based on what the parent could reasonably earn based on their work history, skills, and local job opportunities, rather than just their actual low or non-existent income.



How do I modify a child support order in MA?

To modify a child support order in Massachusetts, you must prove a 'material and substantial change in circumstances.' Additionally, a modification is generally presumed to be required if the existing order is inconsistent with the amount that would result from applying the current child support guidelines.



Does MA child support cover college expenses?

Yes, Massachusetts is one of the states where a judge has the authority to order parents to contribute to the cost of post-secondary education. This support can continue until the child reaches age 23, but the court considers factors like the cost of the school, the parents' financial ability, and the child's aptitude.



How does MA handle health insurance and childcare costs?

In Massachusetts, the costs for health, dental, and vision insurance, as well as reasonable work-related childcare costs, are typically added to the basic child support obligation. These expenses are usually divided between the parents in proportion to their respective incomes.