How Child Support Amounts Are Calculated in Florida

Florida uses a formula based on both parents' income

Florida child support is not a fixed dollar amount — it depends on how much each parent earns, how much time each parent spends with the child, and a few other factors written into state law. The state uses what's called the Income Shares Model, which means the court calculates what percentage of household income should go toward the child's care, then divides that between the parents based on their earnings.

The starting point is always the parents' combined monthly gross income. From there, the court subtracts certain allowed deductions (like taxes, union dues, or existing child support orders for other children), then applies a percentage based on how many children are involved. That percentage ranges from 5% of combined income for one child up to 20% for five or more children.

Once the court knows the total support obligation, it splits that obligation between the parents in proportion to their incomes. So if one parent earns 60% of the household income and the other earns 40%, the higher earner typically pays 60% of the total obligation. The parent who has the child more than half the time may pay less or receive support instead.

Key Takeaways

• Florida calculates child support as a percentage of both parents' combined gross income, ranging from 5% for one child to 20% for five or more children.
• The court divides the total obligation between parents based on their income percentages, so higher earners pay a larger share.
• The amount of time each parent spends with the child affects the calculation, and the parent with majority custody may receive support rather than pay it.
• The court can adjust the standard amount if it would be unjust or inappropriate, such as when a parent has very high income or unusual expenses.
• Child support continues until the child turns 18, or 19 if still in high school, unless the child becomes self-supporting or the parents agree otherwise.

What income counts toward the calculation

The court looks at gross monthly income, which includes salary and wages, but also bonuses, commissions, overtime, rental income, investment income, and income from self-employment. If a parent is unemployed or underemployed, the court may impute income — meaning it assigns an income level based on what the parent could reasonably earn, rather than accepting zero income as an excuse.

Certain income does not count. Child support received from another relationship, Supplemental Security Income (SSI), and Temporary information for Needy Families (TANF) are excluded. Workers' compensation and disability benefits are also typically excluded, though the rules vary depending on the type of benefit.

If a parent is self-employed, the court uses net income after business expenses, not gross revenue. A parent who owns a business will need to provide tax returns and business records to show what that net income actually is.

How custody time affects the amount

The percentage of time each parent has the child matters because it reduces the paying parent's obligation. If both parents have the child roughly equally (called shared parental responsibility), the calculation shifts. The parent with lower income may owe nothing, or the higher-income parent may owe support to the lower-income parent.

The court counts overnights or uses a percentage of the year, depending on the custody arrangement. A parent who has the child every other weekend and one weeknight has significantly less time than a parent who has the child most weekdays, and the support amount reflects that difference.

If one parent has the child more than 90% of the time, the other parent's obligation is calculated differently — the court uses a formula that accounts for the minimal parenting time. The exact numbers depend on the parents' incomes and the state's current guidelines.

Adjustments the court can make to the standard amount

Florida law says the court should use the standard formula, but it also allows the judge to deviate from it if the standard amount would be unjust or inappropriate. Common reasons for adjustment include one parent having significantly higher income than the other, substantial assets or inheritances, the cost of private school or special needs care, or travel expenses related to custody.

A parent can ask the court to adjust the amount by showing that the standard calculation does not account for their actual situation. For example, if a parent pays for the child's health insurance, that cost may reduce their obligation. If a parent has a very high income, the court may cap the calculation at a certain level rather than explore the percentage to unlimited earnings.

The court must put its reasons in writing if it deviates from the guideline amount, so there is a record of why the adjustment was made. This matters if either parent later wants to challenge the order.

When child support ends

Child support in Florida continues until the child turns 18, or until the child graduates from high school, whichever is later — but not beyond age 19. If the child becomes self-supporting before that age (through full-time employment or military service, for example), support can end earlier.

If the child is still in high school after turning 18, the paying parent must continue support until graduation or age 19, whichever comes first. The paying parent can ask the court to end support early if the child drops out or stops attending school.

Support also ends if the child gets married, joins the military, or dies. If the parents agree in writing, they can extend support beyond age 19 for college expenses, though this is not automatic — it requires a written agreement or a court order.

How to find out the specific amount for your situation

The only way to know the exact amount owed in a specific case is to gather the income documents for both parents and run the numbers through Florida's child support guidelines. Many family law websites and some court websites have calculators that show roughly how the formula works, but these are educational tools, not official determinations.

If you are involved in a child support case, the other parent's attorney or the court will provide a Child Support Guidelines Worksheet, which shows the calculation step by step. This worksheet lists each parent's income, deductions, the percentage of time with the child, and the final amount owed. You can review it to understand how the number was reached.

If you disagree with the amount, you can present evidence that the income figures are wrong, that the custody time calculation is inaccurate, or that the standard amount is unjust in your case. The judge will consider your argument and may adjust the amount or keep it as calculated.

Frequently Asked Questions

Does Florida have a minimum child support amount?

Florida does not set a fixed minimum, but the calculation itself produces a floor. With one child and combined income of $1,000 per month, the 5% guideline yields $50 per month. However, judges have discretion to order more if they find the standard amount inadequate for the child's needs, such as for medical care or education.

What happens if a parent loses their job?

If income drops significantly, the paying parent can ask the court to modify the order. The parent must show the job loss was not voluntary and that the new income level is substantially different. The court will not automatically reduce support — the parent must file a motion and prove the change in circumstances.

Can child support be modified after the order is entered?

Yes. Either parent can ask for a modification if there has been a substantial change in circumstances, such as a significant change in income, a change in custody time, or a change in the child's needs. The court will recalculate using current income and issue a new order.

Does the paying parent get a tax deduction for child support?

No. Child support payments are not deductible for the paying parent, and the receiving parent does not report them as income for tax purposes. This is different from alimony, which has different tax treatment.

What if one parent is self-employed or has irregular income?

The court uses average income over time, typically the past two years shown on tax returns. For seasonal work or commission-based income, the court may average the highs and lows to find a realistic monthly figure. Self-employed parents must provide tax returns and business records to support their income claim.