About this calculator
Source of truth
The engine implements the Florida child support guidelines (Fla. Stat. § 61.30), an income-shares model that runs on combined net income. The Schedule of basic obligations is loaded from the § 61.30(6) statutory table.
- Schedule effective date: 2023-07-01
- Schedule rows: 185 ($800–$10,000 combined NET, $50 steps), 1–6 children
- Between-row lookups use proportional (linear) interpolation
- Anchors confirmed: $8,000 net/1ch = $1,290; $10,000/1ch = $1,437
The net-income design
Florida computes support on each parent's net income — gross less the § 61.30(3) 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). By design, you supply the actual amounts from your financial affidavit (Form 12.902(e)); the engine sums them and never estimates your tax. The child's health-insurance premium is not a net deduction — it is a § 61.30(8) add-on (counting it in both places would double-count it).
How the order is built
Both parents' net incomes are combined; the basic obligation is read from the schedule and prorated by income share. Above $10,000 net the obligation is the top-row amount plus a marginal percentage of the excess (§ 61.30(6)(b)). Add-ons (childcare, the children's health insurance, uninsured medical) are prorated. When a parent has at least 20% of the overnights (73/year) the substantial-time-sharing gross-up applies (1.5×, cross-multiplied by overnights). A low-income obligor pays the lesser of the income-share amount and 90% of net above the single-person poverty guideline, with a nominal principle-of-payment order below that.
What this does NOT do
- Estimate your federal income tax or FICA — you supply the actual figures
- The optional 75% childcare / dependent-care-credit reduction (off by default)
- Fill an official AcroForm worksheet (Form 12.902(e) is the affidavit, not the worksheet)
The single-person poverty guideline is pinned to the 2026 HHS figure ($1,330/mo) and updates each January; the between-row interpolation and final-order rounding follow prevailing practice and are being confirmed against the official DOR worksheet.
Other states
Calculators for seven Southeastern states are on the state picker, with more planned.
Disclaimer
This tool produces an estimate based on the inputs you provide. It is not legal advice and does not create an attorney-client relationship. Consult a licensed Florida attorney before relying on any number produced here.
Maintained by
TCB Law, PLLC.