Estimate child support under your state’s guideline
Every US state has a child support guideline written into law. This child support calculator applies three of them — Texas (a percentage of the paying parent’s net resources), Florida (an income-shares schedule) and New York (a percentage of combined parental income) — and shows each step, so you can see where the figure comes from.
It is an estimate only, not legal advice. Courts work from detailed definitions of income, add health insurance, child care and other costs, adjust for other children and parenting time, and can deviate from the guideline. Each state’s rules are dated on the page with links to the statute and the official calculator or worksheet.
How to use the Child Support Calculator (Texas, Florida, New York)
- Choose the state and the number of children in this case.
- Texas: enter the paying parent’s monthly net resources. Florida: enter both parents’ monthly net income, the overnights with the paying parent, and child care plus health insurance. New York: enter both parents’ yearly CSSA income.
- Read the monthly estimate and the steps behind it.
- Check the result with the state’s official calculator or worksheet.
Child Support Calculator (Texas, Florida, New York) features
Texas §154.125
20% to 40% of net resources, the lower percentages under $1,000, and the $11,700 cap from 1 September 2025.
Florida §61.30
The full guidelines schedule from $800 to $10,000, the percentages above $10,000, add-ons and the substantial time-sharing formula.
New York CSSA
17% to 35% of combined income up to $193,000, the pro-rata share and the 2026 self-support reserve.
Every step shown
Income used, percentage or schedule amount, shares and the final estimate.
How each state calculates support
| State | Guideline (as of 25 October 2026) |
|---|---|
| Texas | Percentage of the paying parent’s monthly net resources: 20% (1 child), 25%, 30%, 35%, 40% (5+); under $1,000 net: 15%–35%. Applies up to $11,700 a month (cap from 1 Sep 2025). |
| Florida | Combined net income → schedule amount for the number of children; each parent pays their income share; at least 20% of overnights each triggers the time-sharing formula. |
| New York | Combined parental income × 17%, 25%, 29%, 31% or at least 35%, up to $193,000; the non-custodial parent pays their income share; low-income protections apply. |
What this estimate leaves out
- How each state defines income, including imputed income and allowed deductions.
- Children from other relationships (Texas §154.129, and similar rules elsewhere).
- Medical and dental support, and in New York the child care, health and education add-ons.
- Deviations a court can make for the child’s needs, a parent’s circumstances or agreements.
- Other states: each has its own guideline; check your state’s child support agency.
Related tools
See what a child costs with the cost of raising a child calculator, and work out nursery or daycare bills with the childcare cost calculator.
Child Support Calculator (Texas, Florida, New York) FAQ
How is child support calculated in Texas?
As a percentage of the paying parent’s monthly net resources: 20% for one child, 25% for two, 30% for three, 35% for four and 40% for five or more, applied to net resources up to $11,700 a month. Lower percentages apply under $1,000.
How is child support calculated in Florida?
Both parents’ net incomes are added, the statutory schedule gives the support need for the number of children, child care and health insurance are added, and each parent pays their percentage of income. If each parent has at least 20% of overnights, a time-sharing formula applies.
What percentage is child support in New York?
17% for one child, 25% for two, 29% for three, 31% for four and at least 35% for five or more, of combined parental income up to $193,000 (from 1 March 2026), shared in proportion to income.
Is this child support calculator accurate?
It follows each guideline’s main formula, but real orders depend on many details. Use it to understand the numbers and then check with the official calculator, worksheet or an attorney.
What counts as substantial time-sharing in Florida?
At least 20% of the overnights in a year — 73 nights — with each parent. Then each parent’s share of the schedule amount is multiplied by 1.5 and by the other parent’s share of overnights, and the difference is paid.
What if income is above the cap?
Texas applies the percentage to the first $11,700 of monthly net resources and the court may add more for proven needs. In New York the court decides whether to apply the percentage to combined income above $193,000; tick the box to see that figure.
Does it cover California?
Not yet. California’s guideline formula depends on detailed tax calculations; use the state’s official guideline calculator.