Massachusetts Child Support Calculator
Estimate child support under Massachusetts Child Support Guidelines (Trial Court of Massachusetts). Calculate baseline support, parenting time overnights, health insurance credits, and work-related childcare costs.
1. Enter Case Information
MA RulesEstimated Child Support
MA EstimateUnderstanding Massachusetts Child Support Guidelines
Massachusetts uses an Income Shares model calculated on a weekly basis. Both parents' gross weekly incomes are combined, with capped deductions for childcare and health/dental insurance.
Shared Custody & Overnights in Massachusetts
Massachusetts guidelines explicitly address parenting time splits: standard custody (under 33% time), shared custody (between 33% and 50% time), and 50/50 equal custody, using reciprocal guideline calculations.
Calculate Your Exact Overnights →Official Court Worksheets & Forms
Family court filings in Massachusetts require completing: Form CJD-304 (Child Support Guidelines Worksheet). Review official forms before filing.
View State Worksheets Directory →Worked Calculation Example: Standard Massachusetts Scenario
Here is a realistic line-by-line computation for two parents in Massachusetts raising 2 children:
| Guideline Worksheet Line Item | Parent A (Paying) | Parent B (Receiving) | Combined / Order Total |
|---|---|---|---|
| Monthly Guideline Income | $5800 | $4100 | $9900 |
| Parental Income Proportion | 59% | 41% | 100% |
| Basic Child Support Schedule Obligation | - | - | $1610 /mo |
| Work-Related Childcare Cost | - | - | +$450 /mo |
| Health & Dental Insurance Premium | - | - | +$240 /mo |
| Total Combined Child Financial Needs | - | - | $2300 /mo |
| Final Estimated Monthly Support Order | Paid by Parent A to Parent B | $1260 /month | |
Frequently Asked Questions in Massachusetts
Key legal questions regarding child support establishment, modifications, and enforcement in Massachusetts.
Why does Massachusetts express child support weekly?
Under Massachusetts Probate and Family Court rules, all child support guideline calculations, worksheets, and court orders are determined and entered on a weekly basis.
How does Massachusetts handle shared custody between 33% and 50%?
When parenting time is between 33% and 50%, Massachusetts calculates each parent's hypothetical obligation as recipient and offsets the difference.
Are childcare and healthcare deductions capped in Massachusetts?
Yes. Massachusetts guidelines cap the allowable weekly credits for childcare (up to $355/wk for one child, $570/wk for two or more) and healthcare costs.
Next Useful Steps for Your Case
Take the next step in preparing your family financial documentation:
Convert Irregular Income
Standardize hourly wages, seasonal overtime, or commissions into monthly gross figures.
Launch Income Tool →Explore 50/50 Custody
See how equal time sharing and reciprocal guidelines impact final transfer payments.
50/50 Custody Tool →Download Official Worksheets
Find the exact PDF court forms and financial affidavits required by your court clerk.
Court Worksheets Directory →