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Florida Child Support Calculator

Estimates guideline child support in Florida using the income-shares model.

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Income shares looks simple until you hit Florida's custody-time adjustment — that's usually where the real number moves.

Try a scenario

Click to load — tweak from there.

Inputs

Result

Total monthly child support obligation

$1,800

Basic obligation (guideline % of combined income)

$1,800

Parent A's share of combined income

61.1%

Parent B's share of combined income

38.9%

Parent A's pro-rata amount

$1,100

Parent B's pro-rata amount

$700

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How to use this

  1. 1Enter parent a monthly gross income ($).
  2. 2Enter parent b monthly gross income ($).
  3. 3Enter number of children.
  4. 4Enter guideline % of combined income (editable — represents the florida schedule lookup for this income/child count) (%).
  5. 5Enter monthly work-related childcare cost ($).
  6. 6Enter monthly health insurance premium for children ($).
  7. 7Enter paying parent's share of annual overnights (%).
  8. 8Read your total monthly child support obligation on the right — it updates as you type.
  9. 9Hit Share to keep the scenario or send it to someone.

About this calculator

Estimates guideline child support in Florida using an income-shares model: both parents' monthly incomes are combined, a guideline percentage (editable, representing a lookup in Florida's statutory schedule) is applied to combined income to get a basic obligation, and each parent pays their pro-rata share of that obligation based on their percentage of combined income. Childcare and health insurance costs are added on top and split the same way. Because the paying parent's overnights meet or exceed 20% (73+ nights/year), this tool applies Florida's statutory gross-up adjustment that increases the paying parent's share versus a standard sole-timesharing calculation. This is an estimate only, not legal advice — actual awards depend on the specific court, county guideline worksheets, and judicial discretion, and a judge may deviate from the guideline for good cause.

FormulaFlorida income shares: basic obligation = combined monthly income × guideline % (schedule lookup); each parent pays their % share of combined income times (basic + childcare + health insurance). Florida increases the paying parent's share once overnights reach 20%+.

Worked example

Using the values the calculator loads with:

Inputs

  • Parent A monthly gross income: 5500 $
  • Parent B monthly gross income: 3500 $
  • Number of children: 2
  • Guideline % of combined income (editable — represents the Florida schedule lookup for this income/child count): 20 %
  • Monthly work-related childcare cost: 0 $
  • Monthly health insurance premium for children: 0 $
  • Paying parent's share of annual overnights: 15 %

Results

  • Total monthly child support obligation: $1,800
  • Basic obligation (guideline % of combined income): $1,800
  • Parent A's share of combined income: 61.1%
  • Parent B's share of combined income: 38.9%
  • Parent A's pro-rata amount: $1,100
  • Parent B's pro-rata amount: $700

What each field means

Inputs

Parent A monthly gross income ($)
The parent a monthly gross income used in the calculation, measured in $. Starts at 5500 $ so you have a working example on load.
Parent B monthly gross income ($)
The parent b monthly gross income used in the calculation, measured in $. Starts at 3500 $ so you have a working example on load.
Number of children
The number of children used in the calculation. Starts at 2 so you have a working example on load. Accepted range: 1–6.
Guideline % of combined income (editable — represents the Florida schedule lookup for this income/child count) (%)
The guideline % of combined income (editable — represents the florida schedule lookup for this income/child count) used in the calculation, measured in %. Starts at 20 % so you have a working example on load. Accepted range: 5–40 %.
Monthly work-related childcare cost ($)
The monthly work-related childcare cost used in the calculation, measured in $. Starts at 0 $ so you have a working example on load.
Monthly health insurance premium for children ($)
The monthly health insurance premium for children used in the calculation, measured in $. Starts at 0 $ so you have a working example on load.
Paying parent's share of annual overnights (%)
The paying parent's share of annual overnights used in the calculation, measured in %. Starts at 15 % so you have a working example on load. Accepted range: 0–100 %.

Results

Total monthly child support obligation
Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Basic obligation (guideline % of combined income)
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Parent A's share of combined income
Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Parent B's share of combined income
Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Parent A's pro-rata amount
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Parent B's pro-rata amount
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.

FAQ

What model does Florida use for child support?

Florida uses an income-shares model: both parents' incomes are combined, a schedule amount is applied, and each parent pays a share proportional to their percentage of combined income.

What happens if the non-custodial parent has 20%+ of overnights in Florida?

Florida applies an overnight gross-up (a substantial-timesharing adjustment) once the paying parent has at least 20% of overnights (73+ nights a year), which raises that parent's share of the basic obligation compared to the standard income-shares result.

Where does the guideline percentage in this calculator come from?

It's an editable input that stands in for the amount you'd look up in Florida's statutory child support schedule table for your combined income and number of children — the schedule isn't a single flat percentage, so adjust it to match your state's table.

Is this number what a Florida court will order?

This is an estimate only, not legal advice — actual awards depend on the specific court, county guideline worksheets, and judicial discretion, and a judge may deviate from the guideline for good cause.

Accuracy and limitations

  • Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
  • Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
  • This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.

Related tools

Florida Alimony Calculator (Florida Support Guideline)

Estimates Florida guideline spousal support from each spouse's income.

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APA
RevenueLab. (2026). Florida Child Support Calculator (Income Shares). Retrieved from https://www.revenuelab.fyi/toolbox/child-support-calculator-florida
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<p>Source: <a href="https://www.revenuelab.fyi/toolbox/child-support-calculator-florida" target="_blank" rel="noopener">Florida Child Support Calculator (Income Shares) — RevenueLab</a> (2026).</p>
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Source: [Florida Child Support Calculator (Income Shares) — RevenueLab](https://www.revenuelab.fyi/toolbox/child-support-calculator-florida) (2026).
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