Child Support Calculator

Free. All 50 states plus DC. Results in seconds.

All 50 states plus DC supported

$

Before taxes and deductions

$

What you are ordered to pay each month

Children from other relationships you support

$

Enter 0 if unknown

For sending your full report

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