What are the basic calculation steps?

Start with gross income and subtract allowable deductions (taxes, FICA, health insurance for yourself, mandatory retirement) to reach net income. Add both parents' net incomes together, look up the combined amount on the guideline table for the number of children, then add health insurance and childcare costs, adjusting further if a parent has 20% or more of overnights.

Does the time-sharing schedule affect the amount?

Yes. Once a parent has at least 20% of overnights (73 nights per year), Florida's worksheet applies a time-sharing adjustment that can meaningfully change the final support number.

How do I request a modification?

You must ask the court that issued the original order for a modification based on changed circumstances. Missed payments before a modification is granted can still accumulate as arrears, so filing promptly matters.

How is child support enforced in Florida?

Through an income deduction order, which Florida courts must issue whenever a support order is established, enforced, or modified. Employers withhold support directly from wages and send payments to the Florida State Disbursement Unit. Parents have 15 days from receiving notice to contest an income deduction order.

Florida, United States

Florida Child Support: A Parent's Guide

Q: How is child support calculated in Florida?

Using the income shares model under Fla. Stat. § 61.30: both parents' net incomes are combined, referenced against the state's guideline table for the number of children, and each parent pays a share proportional to their percentage of that combined income, with adjustments for health insurance, daycare, and time-sharing.

How child support works in Florida, in plain English: the income shares guideline worksheet, modification, and income deduction orders.

Legal sources reviewed: August 10, 2026

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In short: Florida uses the income shares model under a detailed statutory worksheet, factoring in both parents' net incomes, health insurance, childcare, and the actual time-sharing schedule. Courts must issue an income deduction order with every support order, and modifications require going back to the issuing court to show changed circumstances.

This is an educational overview written for parents, not lawyers. It isn't legal advice. For anything beyond general understanding, talk to a licensed Florida family law attorney.

What Florida generally provides

Under Fla. Stat. § 61.30, Florida calculates child support using the income shares model: both parents' net incomes are combined, the total obligation is read from the state's guideline table for the number of children, and each parent pays a proportional share based on their percentage of the combined income.

Important terminology

Net income: gross income minus allowable deductions (taxes, FICA, your own health insurance, mandatory retirement contributions), the starting figure for the worksheet.
Time-sharing adjustment: an adjustment applied once a parent has at least 20% of overnights (73 nights/year), which can meaningfully shift the final number.
Form 12.902(e): Florida's official Child Support Guidelines Worksheet used to run the calculation.

How the calculation works

The basic worksheet steps

Start with gross income, subtract allowable deductions to reach net income, combine both parents' net incomes, and look up the combined figure on Florida's guideline table for the number of children. Health insurance and childcare costs are then added, and the total is adjusted further where a parent's overnights meet or exceed the 20% threshold (roughly 73 nights per year).

Each parent's percentage share of the total obligation is determined by dividing their own net monthly income by the combined net monthly income of both parents, the same underlying proportional logic used across most income-shares states.

Requesting or defending a modification

A modification must go back to the court that issued the original order, and Florida requires showing changed circumstances to justify a new amount. Importantly, a parent can't simply stop or reduce payments based on a belief that circumstances have changed, missed payments before a modification is formally granted can still accumulate as arrears and trigger enforcement. See the child support calculator and guideline finder for jurisdiction-specific calculation sources and guidance.

How enforcement works

Florida courts are required to issue an income deduction order whenever a support order is established, enforced, or modified. The state's Child Support Program automatically sends the withholding notice to a parent's employer when the employer is known, and the employer withholds the specified amount and sends it to the Florida State Disbursement Unit. A parent has 15 days from receiving the notice (not from when the employer receives it) to contest an income deduction order.

Common questions

Does 50/50 time-sharing eliminate support? Not automatically. Because the calculation still weighs each parent's net income, a meaningful income gap between parents can produce an obligation even with a fully equal schedule.

Can I stop payments if I think my ex's income changed? No, changed circumstances alone don't authorize self-help; you need a court-approved modification, or you risk accumulating arrears despite a good-faith belief that less is owed.

What if my co-parent isn't paying? The income deduction order is generally the first enforcement tool; contact the Florida Child Support Program or a family law attorney about additional enforcement options if withholding isn't resolving it.

Practical considerations

Because Florida's time-sharing adjustment kicks in at a specific overnight threshold, tracking your actual overnights accurately, not just the nominal schedule in the order, matters for getting the calculation right, and worth confirming with a Florida family law attorney if the numbers are close to that 20% line. For the custody and time-sharing rules underlying this calculation, see the Florida custody guide.

Official Florida resources

FAQ

Questions, answered

This information is provided for educational purposes only and is not legal advice. Family law varies by individual circumstances and may change over time. Consult a qualified attorney or appropriate official resource for advice about your situation.