The Florida child support guidelines use an income shares formula: each parent’s net income is calculated separately, added together, matched to a base support amount on the statutory schedule in Section 61.30, and then divided between the parents in proportion to what each one earns. Health insurance for the child, work-related childcare, and the overnight schedule then push the number up or down. The result is a presumptive monthly figure the judge can adjust in limited circumstances.
How Each Parent’s Income Is Calculated
Everything starts with gross income under Section 61.30(2). That means wages, salary, bonuses, commissions, tips, and overtime, plus self-employment income measured as gross receipts minus ordinary and necessary business expenses.1Florida Senate. Florida Code 61.30 – Child Support Guidelines The statute also sweeps in disability benefits, workers’ compensation, Social Security, pension income, rental income, trust distributions, and gains from selling property, unless the gain was a one-time event.2The Florida Legislature. Florida Code 61.30 – Child Support Guidelines
If a parent’s recurring income isn’t enough to cover the child’s needs, the court can order support paid from non-recurring income or assets. That matters where someone has a modest paycheck but significant investment holdings or a large property settlement.
From gross income, Section 61.30(3) allows a specific list of deductions to reach net income:
- Federal, state, and local income taxes, based on the parent’s actual filing status and dependents
- FICA or self-employment tax
- Mandatory union dues required as a condition of employment
- Mandatory retirement contributions (not voluntary 401(k) contributions)
- Health insurance premiums for the parent personally (the child’s portion is handled elsewhere on the worksheet)
- Court-ordered support actually being paid for other children
- Spousal support paid under a court order from a prior marriage or the current case
Each parent’s net income is calculated on its own, and the two figures are added to produce the combined monthly net income that drives the rest of the calculation.
Imputed Income for Unemployed or Underemployed Parents
A parent who voluntarily quits or takes a lower-paying job can’t reduce support by shrinking their paycheck. The court will impute income based on that parent’s work history, occupational qualifications, and prevailing earnings for similar work in the area. The parent asking for imputation has to prove both that the unemployment is voluntary and what the other parent could realistically earn.
Where a parent refuses to participate or no income information is available, the court presumes that parent earns the median income of year-round full-time workers reported by the U.S. Census Bureau. That presumption is rebuttable, but skipping the hearing is a poor strategy. Two limits apply: the court generally cannot rely on income records more than five years old, and it cannot impute earnings at a level the parent has never actually reached, unless the parent recently finished a degree or got a new professional license.
Applying the Guidelines Schedule
Section 61.30(6) contains a schedule that maps combined monthly net income against the number of children to produce a base support amount. Parents with a combined net income of $5,000 per month and one child face a base obligation of $1,000. The same income with two children produces a base of $1,551.
Above $10,000 in combined monthly net income, the formula changes. Take the maximum amount from the schedule at the $10,000 level and add a percentage of every dollar above that threshold: 5% for one child, 7.5% for two, 9.5% for three, scaling up to 12.5% for six children.
Each parent then owes a share of the base obligation proportional to their income. If one parent earns 60% of the combined net income, that parent is responsible for 60% of the support amount.
Health Insurance and Childcare Add-Ons
These costs are not built into the schedule. They sit on top of it, and this is where parents commonly underestimate what they’ll owe.
The premium for the child’s health insurance, along with any uncovered medical, dental, and prescription expenses, is added to the base obligation. Whichever parent has already prepaid those costs gets credited on their share of the total.
Work-related childcare gets the same treatment. Costs tied to a parent’s employment, job search, or education leading to employment are added to the base obligation and split proportionally, with credit for prepaid amounts. The costs can’t exceed what quality care from a licensed provider would run. A parent paying $1,200 a month for daycare might assume that number is already inside the guideline figure. It isn’t.
The Time-Sharing Adjustment at 20% Overnights
Once a child spends at least 20% of overnights with each parent, which works out to 73 or more nights per year, the calculation shifts significantly. Both parents are incurring direct living expenses when the child is with them, and the formula accounts for that.
Here’s how it runs. Each parent’s share of the base obligation, before adding childcare and health insurance, is multiplied by 1.5. Each parent’s adjusted amount is then multiplied by the percentage of overnights the other parent has. The difference between those two results is the net transfer from one parent to the other. Health insurance and childcare are then layered back in and credited to whoever actually pays them.
The 1.5 multiplier reflects that maintaining two households costs more than one. There’s a catch: if a parent isn’t actually exercising their scheduled overnights, the court can recalculate without the time-sharing adjustment, which typically raises the support owed.
When a Judge Can Order a Different Amount
The guideline figure is presumptively correct, but not fixed. A judge can order more or less. Any deviation of more than 5% requires a written explanation of why the guideline amount would be unjust or inappropriate. Section 61.30(11)(a) lists the factors that can support a deviation:
- Extraordinary medical, psychological, educational, or dental expenses
- The child’s own independent income (not counting Supplemental Security Income)
- Seasonal fluctuations in either parent’s income
- The age of the child, since older children generally cost more
- Special needs previously covered within the family budget
- The total assets of both parents and the child
- The effect of the Child and Dependent Care Tax Credit, Earned Income Tax Credit, and dependency exemption
- The 55% cap: no single support order should require a parent to pay more than 55% of gross income
- Significant time with the child that falls short of the 20% overnight threshold
- Reasonable existing joint debts or expenses the parties incurred together
A parent’s refusal to participate in the child’s activities can also support a deviation.
Low-Income Floor
When the paying parent’s net income falls below the lowest level on the schedule, the court sets support case-by-case rather than pulling a number off the table. The payment is capped at the lesser of two amounts: the parent’s proportional share under the normal calculation, or 90% of the difference between their monthly net income and the federal poverty guidelines for a single person. The goal is to establish the obligation and create a base that can be increased later, without pushing the parent below subsistence.
Retroactive Support at Initial Establishment
When a court first sets a support obligation, it can order payments dating back as far as 24 months before the petition was filed, running from when the parents stopped living together with the child. The court applies the guidelines schedule in effect at the hearing but uses the paying parent’s actual income during the retroactive period. If the paying parent doesn’t produce evidence of what they earned back then, the court uses current income.
Voluntary payments the parent made during the retroactive period, whether directly to the other parent, to the child, or to third parties for the child’s benefit, get credited against the retroactive amount. The court can also set an installment plan so the balance doesn’t have to be paid in one lump sum.
Modifying an Existing Order
Under Section 61.14, either parent can petition to raise or lower support when there’s a substantial change in circumstances related to either parent’s finances or the child’s needs.3Justia. Florida Code 61.14 – Enforcement and Modification of Support Common triggers include job loss, a significant raise, a new medical condition affecting the child, or a schedule change that crosses the 20% overnight line.
When the Florida Department of Revenue reviews a case and finds the current order differs by at least 10%, and no less than $25, from what the guidelines would produce, the agency will seek modification without requiring the parent to separately prove a change in circumstances. Modifications can be made retroactive to the date the petition was filed, but no earlier. Waiting months to file after your situation changes means giving up that interim period.
Filling Out the Worksheet
Every Florida case uses Family Law Rules of Procedure Form 12.902(e), the child support guidelines worksheet, available through the Florida Courts website or at courthouse self-help centers.4First Coast Law. Florida Family Law Rules of Procedure Form 12.902(e) – Child Support Guidelines Worksheet To complete it, you’ll need:
- Recent pay stubs and federal tax returns covering at least the past two years5Florida Department of Revenue. Help with Child Support Forms
- The monthly health insurance premium for the child’s coverage, separated from the parent’s own premium
- Monthly work-related childcare costs
- The exact overnight count for each parent under the court-approved parenting plan
The worksheet walks through each step: entering net incomes, pulling the base obligation off the schedule, adding health insurance and childcare, and applying the time-sharing adjustment where it applies. The output is a proposed monthly figure. The completed worksheet is filed with the Clerk of the Circuit Court, filing fees for a new domestic relations case generally run around $300 to $400, and a judge or general magistrate reviews the numbers at a hearing before entering the final order.