Florida · Fla. Stat. § 61.30
How it works
Florida is an income-shares state that calculates support on each parent's net income. Every step below is what the calculator does, with the rule that authorizes it.
Step 1
Convert each parent's gross to net
§ 61.30(3)
Net income is gross minus the statutory deductions: federal income tax, FICA/self-employment tax, mandatory union dues, mandatory retirement, the parent's own health-insurance premium, court-ordered support for other children actually paid, and spousal support paid. You enter the actual amounts from your financial affidavit; the calculator sums them — it does not estimate tax. See the income page.
Step 2
Combine net income and read the schedule
§ 61.30(6)
Add both parents' net incomes and read the basic obligation from the schedule for the number of children. Between the $50 rows the figure is interpolated proportionally. Above $10,000 net the obligation is the top-row amount plus a marginal percentage of the excess (5%–12.5% by number of children, § 61.30(6)(b)).
Step 3
Prorate by income share
§ 61.30(9)–(10)
Each parent's percentage share of combined net income is their share of the obligation. The parent with fewer overnights pays their share to the majority parent.
Step 4
Add the add-ons
§ 61.30(7)–(8)
Work-related childcare and the children's health-insurance premium are added to the obligation and prorated; uninsured medical is allocated by share. A parent who pays an add-on directly is credited for it.
Step 5
Substantial time-sharing gross-up (≥20% overnights)
§ 61.30(11)(b)
When a parent exercises at least 20% of the overnights — 73 nights a year — the gross-up is mandatory: multiply each parent's share of the obligation by 1.5, multiply each grossed-up share by the other parent's overnight percentage, and take the difference as the transfer. Equal (50/50) time does not zero out support — the higher earner still transfers to the lower earner. Below 73 overnights there is no gross-up, only a possible discretionary deviation.
Step 6
Low-income adjustment
§ 61.30(6)(a)1–2
For a low-income obligor, the order is the lesser of the income-share amount and 90% of the obligor's net income above the single-person federal poverty guideline. If the obligor's net is below the guideline, the court enters a nominal case-by-case order to establish the principle of payment — Florida has no flat dollar minimum.
Step 7
Deviations
§ 61.30(1)(a), (11)(a)
The guideline amount may vary within ±5% without findings; a deviation beyond ±5% requires a written finding that the guideline amount would be unjust or inappropriate, weighing the § 61.30(11)(a) factors.