Child Support Calculator
Free. All 50 states plus DC. Results in seconds.
How This Calculator Works
This calculator applies your state's published Child Support Standards Act (CSSA) guidelines to your income and family situation. It accounts for:
- •FICA deductions (7.65% for W-2, 15.3% for self-employed)
- •State income tax deductions where applicable
- •Federal tax approximation for income shares states
- •Multi-child proportional adjustment for parents with children in multiple households
- •Both Percentage of Income and Income Shares calculation models