To calculate the amount of child support that will be paid, you’ll need to come up with the monthly net income of the possessory parent. To determine your monthly net income, subtract federal income taxes, state income taxes, social security taxes, and union dues from your monthly gross income.

If the monthly net income is more than $7,500, then reduce it to $7,500. For the purposes of the child support calculations based on the Texas guidelines, that is the maximum monthly net income.
If the person paying child support only has children by this marriage, child support will be calculated as follows:

  • 1 child: 20% of adjusted net income
  • 2 children: 25%
  • 3 children: 30%
  • 4 children: 35%
  • 5 or more children: 40%

If the parent who will be paying child support has children from other marriages or relationships, the percentages will differ from those stated above.