Massachusetts Family Law

Massachusetts Child Support Calculator

Free Massachusetts child support calculator. Calculate child support obligations based on Massachusetts state guidelines, custody arrangements, and combined income. Our calculator uses Massachusetts Child Support Guidelines income shares model to determine accurate child support estimates with parenting time adjustments and additional expense calculations.

Last updated: December 15, 2024

Income shares model calculation
Parenting time adjustments
Health insurance & childcare costs

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Massachusetts Child Support Calculator
Calculate child support obligations based on Massachusetts state guidelines

Parent 2: 65% custody time

Monthly Child Support

$2,214

per month

Support Breakdown
Basic Obligation$3,045
Parent 1 Share (57%)$1,740
Parent 2 Share (43%)$1,305
Custody Adjustment-$183
Additional Expenses$1,150
Total Combined Income$10,500

Based on Massachusetts child support guidelines with 2 children. Combined monthly income of $10,500 results in a basic obligation of $3,045. Custody adjustment applied for 35% parenting time.

Legal Disclaimer: This calculator provides estimates based on Massachusetts child support guidelines. Actual court orders may vary based on additional factors and judicial discretion. Consult a Massachusetts family law attorney for official calculations.

Massachusetts Child Support Calculator Features

Income Shares Model
MA Guidelines

Calculation Method

Combined Income

Both parents' incomes combined

Parenting Time Adjustments
Custody percentage consideration

Threshold

30% or more

Substantial parenting time credit

Income Brackets
Tiered percentage system

Ranges

20% - 42%

Varies by income level

Additional Expenses
Health & childcare costs

Included

Insurance + Care

Added to basic obligation

Proportional Division
Income-based allocation

Division

Fair Share

Based on earning capacity

Legal Compliance
State guidelines aligned

Standard

MA Guidelines

Court-recognized calculations

Example Calculation Result

Parents earning $6,000 and $4,500/month with 2 children (35% custody Parent 1)

Monthly Child Support

$2,214

Based on Massachusetts guidelines with parenting time adjustment

How Massachusetts Child Support Calculator Works

Our Massachusetts child support calculator uses the income shares model as defined in the Massachusetts Child Support Guidelines, which is based on the principle that children should receive the same proportion of parental income they would have received if the parents lived together.

Massachusetts Child Support Formula & Guidelines

Step 1: Calculate Combined Income

Combined Income = Parent 1 Gross Income + Parent 2 Gross Income

Step 2: Determine Income Bracket

Low: ≤$2,000 | Mid: $2,001-$6,000 | High: >$6,000

Step 3: Apply Percentage Based on Children & Bracket

Basic Obligation = Combined Income × Percentage

1 child: 20-22%, 2: 27-29%, 3: 32-34%, 4: 36-38%, 5+: 40-42%

Step 4: Divide Proportionally

Each Parent Share = Obligation × (Their Income / Combined Income)

Step 5: Apply Parenting Time Adjustment

Adjustment = Share × (Custody % × Factor) if ≥30% custody

Step 6: Add Additional Expenses

Final = Share + (Insurance + Childcare) × Income % - Adjustment

Understanding Massachusetts Income Shares Model

Massachusetts employs a tiered income shares model that recognizes different percentages should apply based on the combined income level of both parents. This sophisticated approach ensures that child support obligations are fair and proportional across different income levels. The model also accounts for parenting time, recognizing that parents who spend significant time with their children incur direct expenses during that time.

  • Both parents' gross incomes combined determine the guideline income bracket
  • Higher combined incomes use slightly higher percentages per child
  • The obligation is divided between parents in proportion to their incomes
  • Parenting time of at least 30% qualifies for a custody adjustment
  • Health insurance and childcare costs are added proportionally
  • The paying parent receives credit for expenses during their parenting time

Sources & Legal References

  • Massachusetts Child Support Guidelines - Official GuidelinesCommonwealth of Massachusetts child support calculation standards
  • Massachusetts Department of Revenue - Child Support Enforcement DivisionOfficial child support enforcement and guidelines
  • Massachusetts Bar Association - Family Law SectionProfessional resources for family law practitioners

Need help with other state child support calculations? Check our Florida calculator, Illinois calculator, and Louisiana calculator.

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Massachusetts Child Support Calculator Examples

Complete Massachusetts Child Support Example
Real-world calculation with parenting time adjustment

Input Parameters:

  • Parent 1 Income: $6,000/month
  • Parent 2 Income: $4,500/month
  • Number of Children: 2
  • Parent 1 Custody: 35%
  • Health Insurance: $250/month
  • Childcare: $900/month

Calculation Results:

  • Combined Income: $10,500
  • Income Bracket: High (>$6,000)
  • Basic Obligation: $3,045 (29%)
  • Parent 1 Share: $1,741 (57.1%)
  • Custody Adjustment: -$183
  • Monthly Support: $2,214

Key Insight: Tiered income brackets for fairness

Massachusetts uses different percentage rates based on combined income levels, ensuring fair support obligations across economic circumstances. Higher combined incomes result in slightly higher percentage rates.

Low Income Bracket

Combined ≤ $2,000/month

20% for 1 child, 27% for 2 children

Mid Income Bracket

Combined $2,001-$6,000/month

21% for 1 child, 28% for 2 children

High Income Bracket

Combined >$6,000/month

22% for 1 child, 29% for 2 children

Frequently Asked Questions

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