Child support calculator by state

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Texas calculator

Texas, the most searched state, uses a percentage of the paying parent's net resources. Enter the numbers below, or open the full Texas page.

How each state calculates child support

Most states use the income shares model. A few use a percentage of income or the Melson formula. The model for each state is from the National Conference of State Legislatures.

Models: NCSL, Child Support Guideline Models.

The three models in plain English

• Income shares: Both parents' incomes are added together, the state's schedule gives the support a child would get if the parents lived together at that combined income, and each parent pays their share in proportion to their income.
• Percentage of income: Support is a set percentage of the paying parent's income, depending on the number of children.
• Melson formula: A version of income shares that first sets aside a basic amount for each parent's own needs, then shares the child's primary support and adds a further share of remaining income.

What you need before you calculate

• Each parent's income (pay stubs, tax returns, self-employment records).
• How many children are in the case, and any other children either parent already supports.
• Health insurance and child care costs for the children.
• How many overnights each parent has, since many states adjust support for shared parenting time.

Frequently asked questions

How is child support calculated?

Each state has its own guideline. Most combine both parents' incomes and split the cost of raising the children by income share; a few take a set percentage of the paying parent's income. Courts can depart from the guideline in some cases.

Is there a national child support calculator?

No. Child support is set under state law, so you need your state's formula. This page links each state where we found an official calculator.

How much is child support for one child in Texas?

20% of the paying parent's monthly net resources, applied to net resources up to $11,700 a month, if they support no other children. Lower percentages apply when net resources are below $1,000.

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