Child Support in Florida: Calculation & Guide

Child support is one of the most consequential — and frequently contested — issues in Florida family law cases. Unlike property division or alimony, child support is not left to negotiation between the parties. Florida law sets child support using a formula, and courts are required to follow it unless specific criteria for deviation are met.

This guide explains how Florida child support is calculated, what expenses it covers, how it can be modified, and what happens when a parent fails to pay.

The Legal Basis for Child Support in Florida

Florida Statute § 61.30 governs child support. Under Florida law, both parents have a legal obligation to financially support their children. This obligation exists regardless of whether the parents were married, and it applies to both biological and legally adopted children.

Child support cannot be waived by agreement between the parents — it belongs to the child, not the parents. A court will not approve a settlement agreement that purports to eliminate child support if it would harm the child's interests.

How Florida Calculates Child Support: The Income Shares Model

Florida uses an income shares model, which is based on the idea that children should receive the same proportion of parental income they would have received if the family had remained intact. The calculation combines both parents' incomes and applies a statutory schedule to determine the baseline support obligation.

Step 1: Calculate Net Monthly Income for Each Parent

The starting point is each parent's net monthly income. Florida law defines net income broadly — it includes wages, salary, bonuses, commissions, self-employment income, rental income, disability benefits, Social Security benefits, investment income, and more. Certain deductions are permitted, including federal and state taxes, mandatory retirement contributions, and payments on existing child support orders for other children.

If a parent is voluntarily unemployed or underemployed, Florida courts may impute income — attributing earnings that parent could be making if they were working at their full capacity, based on their work history, education, and the prevailing wage for their skills.

Step 2: Combine Incomes and Apply the Schedule

Both parents' net incomes are combined. Florida's statutory schedule then sets a minimum support obligation based on the combined income and the number of children. This amount represents the total support the children require.

Step 3: Allocate Between Parents

Each parent's share of the total support obligation is proportional to their share of the combined income. The parent who has the child less (the obligor) pays their share to the parent who has the child more.

Step 4: Adjust for Timesharing and Expenses

The baseline calculation is adjusted based on several factors:

• Timesharing percentage: If the paying parent has the child for 20% or more of overnight stays (roughly 73 nights per year), the support obligation is adjusted downward to reflect the expenses that parent incurs directly.
• Childcare costs: Work-related childcare expenses are added to the support calculation and shared proportionally.
• Health insurance: The cost of the child's health insurance is added and shared proportionally.
• Uncovered medical expenses: These are typically shared in proportion to income.

Florida Child Support Calculator

Use the estimator below to get a rough idea of what Florida's guidelines would produce in your situation. Enter both parents' net monthly income (after taxes), the number of children, overnights, and any add-on expenses.

What Child Support Covers — and What It Doesn't

Florida's child support guidelines are designed to cover the child's basic needs: food, clothing, shelter, and ordinary medical care. The statutory support amount is not meant to cover every possible expense.

Expenses that are typically handled separately from base child support include:

• Work-related childcare (added to the guideline calculation)
• Health insurance premiums for the child (added to the calculation)
• Uncovered medical, dental, and vision expenses (typically shared per a set formula)
• Extracurricular activities and private school tuition (may be addressed separately in the parenting plan or settlement agreement)

Can Parents Agree on a Different Amount?

Yes — but with limits. Florida law allows parents to agree to a child support amount that differs from the guidelines, but the court must approve any deviation. A deviation requires written findings that the guideline amount would be unjust or inappropriate and that the deviation serves the child's best interests.

Courts scrutinize agreements that reduce child support below guidelines much more carefully than those that increase it. An agreement that leaves a child inadequately supported will not be approved.

Duration of Child Support in Florida

Florida child support obligations generally continue until the child:

• Turns 18 years old, or
• Graduates from high school, whichever is later (but not beyond age 19), or
• Is emancipated or marries before age 18, or
• Dies

Parties may agree to extend support beyond these statutory limits — for example, to cover college expenses — but courts cannot order it absent an agreement.

Modifying Child Support in Florida

Child support is not permanent and inflexible. Either parent can petition to modify it when circumstances change substantially. Florida Statute § 61.30(1)(b) provides that a modification is warranted when there is a substantial change in circumstances that results in at least a 15% or $50 per month difference in the guideline amount, whichever is greater.

Common Grounds for Modification

• A significant increase or decrease in either parent's income
• Job loss (though courts will evaluate whether it was voluntary)
• A substantial change in the child's needs (medical condition, educational requirements)
• A significant change in the timesharing arrangement
• The child reaching the age of majority, reducing the number of children on the support order

To seek a modification, you must file a Supplemental Petition to Modify Child Support with the court that entered the original order. You cannot simply stop paying or informally agree to pay a different amount — any change to a court-ordered support obligation requires a court order.

Enforcement: What Happens When Child Support Isn't Paid

Florida takes child support enforcement seriously. If a parent fails to pay court-ordered child support, the other parent — or the Florida Department of Revenue — can pursue enforcement through several mechanisms:

• Income withholding: Florida law requires income withholding orders in virtually all child support cases. The support amount is automatically deducted from the obligor's paycheck.
• Contempt of court: A parent who willfully fails to pay can be held in contempt, which can result in fines or incarceration.
• License suspension: Florida can suspend a delinquent parent's driver's license, professional licenses, and recreational licenses.
• Tax refund intercepts: Federal and state tax refunds can be intercepted to satisfy child support arrears.
• Credit reporting: Child support arrears are reported to credit bureaus.
• Passport denial: Significant child support arrears can result in passport denial.
• Property liens: A lien can be placed on the obligor's real and personal property.

Arrears — unpaid child support — do not disappear. They accumulate with interest and can be collected for years after the child reaches adulthood.

Child Support and Taxes

Child support payments are not tax-deductible for the paying parent and are not taxable income to the receiving parent. This differs from alimony, which has its own tax treatment. The right to claim the child as a dependent for tax purposes is a separate matter that can be addressed in the parenting plan — by default, the parent with majority timesharing claims the child, but parents can agree otherwise.

Frequently Asked Questions About Florida Child Support

What if I lose my job and can't pay child support?

You must file a petition to modify immediately. Do not simply stop paying — unpaid support becomes arrears and you remain legally obligated for the full amount until a court modifies the order. Courts will evaluate whether the job loss was voluntary. Notify the court promptly and document your efforts to find new employment.

Can child support be waived in a settlement agreement?

Parents cannot waive child support on behalf of their children. An agreement that eliminates or severely reduces child support below guidelines will not be approved by a Florida court. The child has an independent right to support.

Does child support change if timesharing changes?

Yes. Timesharing percentage directly affects the child support calculation. If a parent's overnight timesharing changes significantly — particularly crossing the 20% threshold — that can support a petition to modify support.

What if the other parent is self-employed and hides income?

Florida courts are experienced with self-employment income issues. Through financial discovery — tax returns, bank records, business financials — actual income can often be established. Courts can also impute income based on lifestyle, assets, and earning capacity when income is deliberately understated.

Speak With a Florida Child Support Attorney

Whether you are establishing an initial child support order, seeking a modification due to changed circumstances, or dealing with an enforcement issue, the outcome has significant financial implications for years to come. Contact The Desai Firm for a free consultation. We serve clients throughout St. Johns County, Flagler County, Duval County, and Northeast Florida.