How Does Child Support Work in Florida?

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How Does Florida Calculate Child Support?

Florida’s Income Shares Model — used by 41 states — combines both parents’ net monthly income to determine child support obligations (F.S. § 61.30). The model estimates what parents would spend on their children if the family lived together, then divides that amount proportionally based on each parent’s income share.

Here’s how the five-step calculation works in Duval County and across Florida:

1. Calculate each parent’s gross monthly income from all sources (wages, bonuses, business income, disability, retirement, investments)
2. Subtract allowable deductions — federal/state taxes, FICA, mandatory retirement, health insurance (self only), court-ordered support for other children
3. Combine both parents’ net incomes and match to Florida’s statutory guidelines chart
4. Add child-related expenses — health insurance premiums, childcare costs, uncovered medical expenses — split by each parent’s income percentage
5. Adjust for time-sharing if either parent has the child 73+ overnights per year

Each parent’s share is proportional to their income. If Parent A earns $4,000/month and Parent B earns $2,000/month, Parent A pays 67% of the total obligation and Parent B pays 33%.

What Counts as Income for Child Support in Florida?

Florida defines income broadly under F.S. § 61.30(2), counting virtually every source of money a parent receives. Courts look beyond W-2 wages to capture the full financial picture.

Income sources that count toward child support:

• Employment income — salary, wages, bonuses, tips, commissions, overtime
• Business income — gross receipts minus ordinary and necessary business expenses
• Investment income — interest, dividends, rental income, royalties, trusts
• Government benefits — Social Security, disability, workers’ compensation, unemployment, VA benefits
• Retirement income — pensions, annuities, retirement account distributions
• Other income — alimony from a prior marriage, prizes, settlements

Courts can also impute income to a parent who is voluntarily unemployed or underemployed. If a parent quits a $60,000 job to avoid support, the court calculates payments based on their earning capacity — not their actual income (F.S. § 61.30(2)(b)).

For self-employed parents, courts typically require 3–5 years of tax returns and business records. Deductions that look like personal expenses disguised as business costs get added back to income.

How Much Will You Pay? Florida’s Guidelines Schedule

Florida’s statutory guidelines chart under F.S. § 61.30(6) sets presumptive support amounts based on combined net income and number of children. These amounts represent the total obligation — each parent pays their proportional share.

Here are key amounts from the 2025 guidelines schedule:

For combined incomes above $10,000/month, Florida uses a percentage-based formula: 5% per child for one child, 7.5% for two, 9.5% for three, 11% for four, 12% for five, and 12.5% for six children (F.S. § 61.30(6)).

Courts can deviate up to 5% from guideline amounts without written justification. Larger deviations require specific findings on the record.

How Does Time-Sharing Affect Child Support?

Florida’s child support formula adjusts when either parent has the child for at least 73 overnights per year — 20% of the year — under F.S. § 61.30(11). This threshold recognizes that both parents incur direct costs (food, utilities, supplies) when maintaining a second household for the child.

When the 73-overnight threshold is met, the calculation changes:

1. The base support obligation is multiplied by 1.5 (the “gross-up” method)
2. Each parent’s share is calculated based on their income percentage
3. Each parent’s share is then adjusted based on their percentage of overnights
4. The parent owing the larger amount pays the difference to the other parent

Courts count only overnights, not daytime hours. Where the child sleeps is what matters for calculation purposes. A parent who spends every day with the child but returns them each evening has zero overnights.

Does 50/50 Custody Mean No Child Support?

No — this is the most common misconception in Florida family law. Even with a perfectly equal 50/50 time-sharing schedule, child support usually still applies when parents have different income levels (F.S. § 61.30).

Florida’s system aims to equalize the child’s standard of living across both households. If one parent earns $6,000/month and the other earns $3,000/month, the higher-earning parent still pays support — even with equal overnights — so the child doesn’t experience drastically different living standards.

The only scenario where 50/50 eliminates support payments requires three conditions to align simultaneously:

1. Exactly equal overnight time (182.5 nights each)
2. Virtually identical income levels
3. Equal sharing of all child-related expenses (insurance, childcare)

In practice, this combination is extraordinarily rare. Most 50/50 arrangements still result in a transfer payment from the higher-earning parent to the lower-earning parent.

What Does Child Support Cover?

Florida child support covers a child’s basic needs as outlined in F.S. § 61.30: housing, food, clothing, education, and transportation. The guidelines amount is a floor, not a ceiling — courts can order additional support for specific expenses.

Beyond the base obligation, support calculations include:

• Health insurance premiums for the child (divided proportionally)
• Uncovered medical expenses — dental, vision, prescriptions, mental health
• Childcare costs necessary for employment or education
• Extraordinary expenses — special needs, therapy, private school (by court order)

Child support is not taxable income for the receiving parent and not tax-deductible for the paying parent. This tax-neutral status has applied to all child support since the Tax Cuts and Jobs Act of 2017 (IRS Topic 452).

When Does Child Support End in Florida?

Child support in Florida typically ends when the child turns 18 or graduates from high school, whichever comes later — but no later than age 19 (F.S. § 743.07). The Florida Department of Revenue recommends contacting them six months before the child turns 18 if the child is still in high school (FL DOR).

Specific rules:

• Child graduates before 18 — support ends at age 18
• Child still in high school at 18 — support continues until graduation or age 19, whichever comes first
• Child with disabilities — support can continue indefinitely if the child cannot become self-supporting due to a mental or physical incapacity that began before age 18

Support may also end early if the child marries, joins the military, or is legally emancipated. For families with multiple children, the support order typically reduces (but doesn’t end) as each child ages out.

How Do You Modify a Child Support Order in Jacksonville?

Either parent can petition to modify child support in Duval County when there is a “substantial change in circumstances” under F.S. § 61.30(1)(a). The legal threshold is clear: the change must result in at least a 15% or $50 difference (whichever is greater) from the current support amount.

Common grounds for modification include:

• Significant income change — job loss, promotion, disability, retirement
• Change in time-sharing — overnight schedule substantially changes
• Child’s needs change — medical condition, educational requirements, special needs
• Change in childcare or insurance costs
• Other children — new court-ordered support obligations (but simply having more children doesn’t automatically reduce existing obligations)

The Florida Department of Revenue also reviews child support orders every three years upon request to determine if modification is appropriate. Either parent can request this review through the FL DOR Child Support Program.

What Happens If a Parent Doesn’t Pay Child Support?

Florida provides aggressive enforcement tools when a parent falls behind on child support. The Florida Department of Revenue — which manages over 1 million child support cases and disburses more than $1 billion annually — can pursue enforcement without the custodial parent hiring an attorney (FL DOR).

Enforcement actions include:

1. Income deduction orders — automatic paycheck withholding (the default for all new support orders)
2. Contempt of court — willful non-payment can result in jail time
3. License suspension — driver’s license, professional licenses, hunting/fishing licenses
4. Passport denial — federal law blocks passport issuance for arrears over $2,500
5. Tax refund intercept — federal and state tax refunds seized for past-due support
6. Credit reporting — delinquencies reported to all three credit bureaus
7. Bank account levy — funds seized from bank accounts
8. Property liens — liens placed on real estate and personal property

Federal garnishment limits cap withholding at 50% of disposable income if the parent supports another family, 60% if they don’t, and 65% if payments are 12+ weeks overdue.

5 Common Child Support Mistakes in Florida

1. Assuming 50/50 means zero support — Unless incomes are nearly identical and all expenses split equally, the higher-earning parent still pays. The formula adjusts for time-sharing but doesn’t eliminate the obligation.
2. Hiding income or quitting a job — Courts impute income based on earning capacity. A parent who voluntarily becomes unemployed pays based on what they could earn, not what they currently make.
3. Ignoring the 73-night threshold — Parents with fewer than 73 overnights miss the time-sharing adjustment. If you’re close to 73 nights, every overnight matters for your support calculation.
4. Thinking remarriage changes obligations — A new spouse’s income generally doesn’t affect existing child support orders. Your obligation to your biological children continues regardless of your new partner’s finances.
5. Stopping payments without a court order — Even if circumstances change, you must continue paying until a judge modifies the order. Unilateral payment reductions result in arrears that accumulate interest.

Questions about child support in Jacksonville? Call (904) 396-5557 to speak with Sacks & Sacks about your case.

Frequently Asked Questions

How is child support calculated in Florida?

Florida uses the Income Shares Model under [1] F.S. § 61.30, which combines both parents’ net monthly income and matches it to a statutory guidelines chart. At $5,000 combined monthly income, the base obligation is $1,000 for one child and $1,551 for two children. Each parent pays their proportional share based on income percentage, with adjustments for health insurance, childcare, and time-sharing.

Does 50/50 custody eliminate child support in Florida?

No. Even with equal 50/50 time-sharing, child support applies when parents have different incomes [1]. Florida’s formula adjusts for shared overnights but still requires the higher-earning parent to pay so the child maintains a consistent standard of living in both homes. Support only reaches zero when incomes are nearly identical and all expenses are split equally.

What is the 73-overnight rule for Florida child support?

When either parent has the child for at least 73 overnights per year (20% of the year), the support calculation triggers a time-sharing adjustment under F.S. § 61.30(11) [1]. The base obligation is multiplied by 1.5, and each parent’s share is adjusted based on their actual overnight percentage. This reduces the transfer payment to account for both parents directly housing the child.

Can child support be modified in Florida?

Yes. Either parent can petition for modification when a substantial change in circumstances would alter the support amount by at least 15% or $50 per month, whichever is greater [1]. Common triggers include job loss, significant income changes, changes in overnight schedules, or new medical needs. The FL Department of Revenue also reviews orders every three years upon request [2].

What happens if a parent doesn’t pay child support in Florida?

Florida enforces child support through income withholding, contempt of court (including jail), driver’s and professional license suspension, passport denial for arrears over $2,500, tax refund interception, bank levies, and credit reporting [2]. Federal law caps garnishment at 50–65% of disposable income. The FL Department of Revenue manages enforcement for over 1 million cases statewide.

Sources:

[1] Florida Legislature, F.S. § 61.30 — Child Support Guidelines. flsenate.gov

[2] Florida Department of Revenue, Child Support Program. floridarevenue.com

[3] IRS, Topic No. 452 — Alimony and Separate Maintenance. irs.gov

[4] National Conference of State Legislatures, Child Support Guideline Models. ncsl.org

[5] Florida Legislature, F.S. § 743.07 — Removal of Disabilities of Nonage. flsenate.gov

[6] Florida Legislature, Ch. 2023-301 — Family Law Reform (50/50 Presumption). flrules.org

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