Understanding Child Support
Three Main Calculation Models
Income Shares Model (Most Common): Used in ~40 states. Calculates support based on both parents' combined income, assuming children should receive the same proportion of parental income they would have if parents lived together.
Percentage of Income Model: Used in ~10 states. Calculates support as a fixed percentage of the non-custodial parent's income only (typically 17-25% for one child, increasing with more children).
Melson Formula: Used in Delaware, Hawaii, and Montana. Ensures each parent's basic needs are met before calculating support, then allocates remaining income to children.
Factors That Affect Payments
- Parenting Time: More overnights with non-custodial parent typically reduces support
- Health Insurance: Parent paying children's health insurance may get credit/reduction
- Childcare Costs: Work-related childcare is typically shared proportionally
- Special Needs: Medical, educational, or therapeutic needs may increase support
- Other Children: Support obligations to children from other relationships may reduce payment
State-Specific Guidelines
Every state has its own child support guidelines and calculation methods. Key variations include:
- Income caps or thresholds
- How overnight parenting time affects calculations
- Treatment of bonuses, overtime, and self-employment income
- Deviation factors (reasons to adjust from guideline amount)
Modification of Support
Child support can be modified when there's a significant change in circumstances:
- Substantial change in either parent's income (typically 15-20% or more)
- Change in custody or parenting time arrangements
- Child's needs change (medical, educational)
- Birth of additional children
Payment & Enforcement
How Payments Are Made: Usually through state child support enforcement agency, often via wage garnishment. Direct payments between parents are discouraged as they're harder to document.
Consequences of Non-Payment:
- Wage garnishment and bank levies
- Tax refund interception
- License suspension (driver's, professional, recreational)
- Credit reporting
- Contempt of court (potential jail time)
Important Considerations
- Arrears: Past-due support continues to accrue interest and doesn't automatically expire
- Emancipation: Support typically ends at age 18-21, depending on state
- College Expenses: Some states require contribution to college costs beyond basic support
- Voluntary Agreements: Parents can agree to amounts different from guidelines, but court approval is required