Fla. Stat. § 61.30

Child Support

Florida child support isn’t guesswork — it runs on a statutory formula. Here is what drives the number, and when it can change.

Attorney-Reviewed Statute Resource
Reviewed by Joseph Grant, Family Law Attorney (Fla. Bar #97315). Last reviewed: June 2026

A Formula, Not a Guess

Florida sets child support using the guidelines in § 61.30. The amount is presumptively determined by a formula based on the parents’ combined net income, the number of children, and the time-sharing arrangement.

The Governing Statute
Fla. Stat. § 61.30 — Child Support Guidelines
"The child support guideline amount … presumptively establishes the amount the trier of fact shall order … based on the combined net income of the parents and the number of children."
Read the full statute on Online Sunshine →

What Drives the Number

Child Support — Key Inputs
Both parents’ net incomes (gross income minus allowable deductions).

Number of overnights each parent has (substantial time-sharing adjusts the amount).

Child-care and health-insurance costs for the children.

Number of children being supported.

A court can deviate from the guideline amount, but must justify it. Because the inputs drive everything, disputes often center on a parent’s true income — especially where someone is self-employed or underemployed.

Modifying Support

Child support can be modified when there is a substantial change in circumstances — a significant income change, a change in the time-sharing schedule, or changes in the children’s needs. Support obligations and modifications can also be handled through the Florida Department of Revenue.

Frequently Asked Questions

How is child support calculated in Florida?
Under the § 61.30 guidelines, using a formula based on both parents’ combined net income, the number of children, the number of overnights each parent has, and costs like child care and health insurance. The guideline amount is presumptively correct.
Does time-sharing affect child support in Florida?
Yes. The number of overnights each parent has factors directly into the calculation. Substantial time-sharing (a more equal split) can significantly adjust the support amount under the § 61.30 formula.
Can child support be changed in Florida?
Yes, upon a substantial change in circumstances — such as a significant change in either parent’s income, a change in the time-sharing schedule, or a change in the children’s needs. Modifications can be pursued through the court or the Department of Revenue.

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This page summarizes Fla. Stat. § 61.30 for general informational purposes and is not legal advice. Statutes change; while this page is reviewed by a licensed Florida attorney, always verify the current text on the official Online Sunshine source or consult an attorney about your specific situation. Serving Martin, St. Lucie, Palm Beach, Indian River, and Okeechobee Counties.