How Florida Calculates Child Support
Florida uses an income-sharing model to calculate child support. Both parents' gross incomes are combined into a single pool, and the support obligation is derived from the state's guideline schedule based on the combined income and the number of children.
The Income-Sharing Model
The principle behind Florida's model: both parents owe a duty to support their children, and the amount reflects both parents' financial capacity together. The combined monthly net income of both parents determines a base support figure, which is then allocated proportionally.
Net vs. Gross Income
Florida's schedule works off monthly net income — gross income minus certain deductions (federal, state and Social Security taxes, union dues, court-ordered support for other children, and similar items). Getting the net-income calculation right is essential, because it is the foundation of the whole formula.
The Guideline Schedule
The Department of Revenue published guideline schedules translate combined net income into a base support amount for one, two, three, or more children. These guidelines are revised periodically and updated annually for the cost of living.
Florida Child Support Guidelines
How the Numbers Work
For a single child, the base support figure is roughly 14 to 20 percent of combined net income, depending on the income level. For two children, the percentage rises; for three or more, it increases further. The schedule is a table, not a formula you compute in your head — which is why using the official worksheet matters.
Reading the Schedule
The schedule lists combined net monthly income ranges down the side and the number of children across the top. Each cell contains the total support for the child or children — the amount the parents collectively owe.
Factors Affecting Child Support
Each Parent's Income
Both parents' incomes feed the calculation. Unemployment, underemployment, and voluntary income reduction are examined by the court — a parent cannot escape the guidelines by refusing to work.
Number of Overnights
When a parent has a substantial number of overnights (generally 40 percent or more), Florida uses Worksheet B (shared parental responsibility), which adjusts the support figure to account for the shared parenting time.
Healthcare Costs
The parent providing healthcare insurance for the children receives a credit against support. Premiums, copays, and uninsured medical expenses are part of the calculation.
Childcare and School Costs
Work-related childcare and certain school expenses are added to the base support obligation and shared proportionally.
Other Children
Court-ordered support for children from other relationships enters the calculation as a credit, reflecting the parent's existing obligations.
High-Income and Low-Income Cases
Above certain income levels, the schedule gives way to a case-by-case determination based on the children's actual needs. Below certain levels, the minimum support amount may apply.
The Child Support Worksheets
Worksheet A — Primary Residential Parent
Used when one parent has the majority of overnights. The primary residential parent's obligation is offset against the other parent's, producing the amount the non-residential parent pays.
Worksheet B — Shared Parental Responsibility
Used when the children spend roughly 40 percent or more of overnights with each parent. Worksheet B factors the shared time into the calculation, often reducing the transfer from one parent to the other.
Completing the Worksheet
Each worksheet requires gross income, net-income deductions, healthcare and childcare amounts, and the number of overnights. Accuracy matters — the worksheet output becomes the recommended support amount the court applies.
When Child Support Can Be Modified
Child support orders are not permanent. A substantial change in circumstances — typically an income change of at least 15 percent, or a change in healthcare, childcare, or overnight schedule — can support a modification petition. Whether the change is an increase or a decrease, the right approach is documentation and a formal petition. See how our modifications practice handles support changes.
Enforcement of Child Support in Florida
Child support obligations are enforced seriously. Tools include income withholding, license suspension, contempt proceedings, and interception of tax refunds. If you are owed support, enforcement options exist.