Florida Child Support Calculator

Florida child support is governed by Section 61.30 of the Florida Statutes and uses the Income Shares model, which ensures that both parents contribute to the financial needs of their children based on their respective incomes. The theoretical foundation of this approach is that children deserve the same proportion of each parent's financial resources they would have received if the family had remained intact. Florida courts apply this model by combining both parents' monthly net incomes and looking up the resulting amount in the official Florida Child Support Guidelines Table to determine the basic monthly obligation for the number of children at issue. This table was built from economic studies of what families at various income levels actually spend on children's basic needs including housing, food, clothing, transportation, education, and personal care.

The table lookup produces a Basic Monthly Obligation that represents the combined amount both parents are expected to contribute. Each parent's share is then determined by dividing their individual net income by the combined net income figure, producing a percentage. The non-custodial parent's percentage is applied to the Basic Monthly Obligation to determine what they owe as a direct payment. The custodial parent's share is presumed to be spent directly on the child through the day-to-day costs of housing, food, transportation, and other care expenses. This proportional allocation ensures that each parent's contribution reflects their actual financial capacity rather than a fixed formula applied without regard to meaningful income differences between the parents.

Florida's Income Shares model is not purely mechanical — courts retain significant discretion to adjust the calculated amount when circumstances warrant. Section 61.30(1)(a) specifies that the guidelines are a rebuttable presumption, meaning the calculated amount is presumed correct but can be overcome by evidence that a different amount is more appropriate. To deviate from the guideline, a court must make written findings explaining that following the guidelines would be unjust or inappropriate given the particular case. This combination of a structured starting point with judicial flexibility makes Florida's system both consistent across the state and adaptable to the enormous variety of family financial situations that come before Florida's circuit courts in domestic proceedings.

Florida Section 61.30(2) defines income broadly to capture all sources of financial capacity available to a parent. Income includes wages and salary, self-employment income after allowable business deductions, bonuses, commissions, overtime pay, tips, rental income, dividends and interest, pension and retirement income, Social Security benefits, workers' compensation, unemployment compensation, disability benefits, and regular gifts or contributions from others that reduce living expenses. The comprehensive definition prevents parents from restructuring their finances in ways that would reduce apparent income for support purposes. Courts are required to look past the technical form of income and assess its economic substance, ensuring that all available financial capacity is considered in the support calculation.

Florida requires courts to impute income when a parent is voluntarily unemployed or underemployed. If the court finds that a parent is earning less than they could — whether by choosing not to work, working fewer hours than their capacity allows, or accepting a lower-paying position — the court may impute income at a level reflecting what the parent could earn if fully employed in a position suited to their education, experience, and local job market. The imputation is based on actual marketplace data for the parent's occupation and geographic area, not an arbitrary figure. This provision prevents manipulation of support calculations by parents who reduce their income intentionally to minimize their child support obligation while continuing to enjoy a lifestyle inconsistent with their reported earnings.

Florida allows a deduction for health insurance premiums paid by a parent for themselves, mandatory union dues, mandatory retirement contributions required as a condition of employment, and federal income tax withholding. Florida does not deduct state income taxes because the state has none. The result — net monthly income — is the figure each parent brings to the combined income calculation. When one parent has income from multiple sources, all sources are combined into a single net monthly income figure before the calculation proceeds. Self-employed parents must provide documentation of business expenses before deducting them from gross income, and Florida courts scrutinize those claimed deductions carefully to ensure they reflect genuine business costs rather than personal expenses improperly run through the business.

Florida statute provides a meaningful reduction in child support when a parent has substantial parenting time, defined as 20% or more of the annual overnights — that works out to 73 or more nights per year. When a parent meets this threshold, the base child support obligation is reduced using a formula that accounts for direct expenses the visiting parent incurs during their time with the child. The more overnights a parent has, the more of the child's day-to-day expenses they bear directly, and the less they need to transfer to the other parent to cover those same costs. This formula recognizes the economic reality of shared physical custody and prevents the non-custodial parent from effectively paying twice — once through direct expenditures and once through cash support transfers.

The Florida parenting time reduction formula works as follows. First, each parent's obligation from the basic table is multiplied by 1.5 — the multiplier accounts for the duplicated fixed costs in each household, such as maintaining a bedroom and supplies for the child. This inflated amount is then multiplied by the other parent's percentage of overnights to determine what each parent's time-based obligation would be. The two results are subtracted to produce a net obligation for the parent with fewer overnights. When parents share time more equally, the two inflated obligations converge, reducing the net payment. At exactly 50/50 sharing with equal incomes, the formula produces zero support, though courts can deviate when other circumstances such as income disparity require a different result.

Disputes over overnights are common in Florida support modifications. Because the number of overnights directly affects the support amount, parents sometimes argue about what constitutes a qualifying overnight, whether the parenting plan is being followed in practice, or whether a change in the actual parenting schedule should trigger a modification. Courts generally look at the parenting plan as the controlling document but will consider evidence of what actually happens in practice when there is a significant divergence from the order. A parent who has a court order for 100 overnights but consistently exercises only 50 may not receive the benefit of the larger schedule in a support calculation. Keeping records of actual overnight stays can be important evidence in Florida modification proceedings.

Florida handles healthcare and childcare costs as add-ons to the Basic Monthly Obligation rather than folding them into the base table amount. Health insurance costs for the child are added to the support calculation and split proportionally between the parents based on their respective net income percentages. The statute typically orders whichever parent has the most cost-effective access to employer-sponsored family health coverage to maintain that coverage for the child. When no employer coverage is available, parents may be ordered to obtain private coverage, with the cost again allocated proportionally to each parent's net income. Uninsured medical expenses — copays, deductibles, and costs for uncovered services — are typically divided proportionally to income or 50/50 depending on the order's specific language.

Work-related childcare costs receive similar treatment in Florida. The cost of childcare necessitated by a parent's employment, job search, or vocational training is added to the total support obligation and divided proportionally between the parents. Florida courts focus on whether the childcare is reasonably necessary given the parent's work schedule and whether the costs are reasonable for the type and quality of care provided in the relevant area. Summer camps and enrichment activities that go beyond basic childcare supervision may or may not be included depending on whether they are primarily custodial in nature or primarily extracurricular and enrichment-focused. A parent seeking to include childcare costs should provide documentation of actual expenses, the care provider, and the work schedule that makes the care necessary.

Florida also recognizes that children's healthcare needs can generate significant extraordinary expenses beyond routine coverage. Orthodontics, mental health treatment, physical therapy, and other specialized medical care can create substantial out-of-pocket costs even with good insurance coverage. Florida courts typically address extraordinary medical expenses in one of two ways: either by establishing a specific cost-sharing percentage in the support order, or by reserving jurisdiction to address them as they arise on a case-by-case basis. Parents are generally required to notify each other promptly of non-emergency medical expenses and to seek reimbursement within a specific timeframe stated in the order. Failure to provide timely notice can affect a parent's right to reimbursement in some circumstances.

Florida law allows either parent to seek a modification of child support when there has been a substantial change in circumstances. Under Florida Statutes § 61.30(1)(b), the change must be permanent, involuntary, and significant enough that the court would order a different amount if the case were decided today using current guidelines. As a practical benchmark, Florida courts often look at whether the calculated amount under current incomes would differ from the existing order by at least 15% or $50 per month — whichever is greater. A change that meets this threshold creates a rebuttable presumption that modification is appropriate, though the court still has discretion in determining the final modified amount and considering whether the change in circumstances is genuinely material.

Common grounds for modification in Florida include a significant increase or decrease in either parent's income, loss of employment, a change in the child's medical needs, aging out of childcare expenses when a child starts school or becomes old enough to be unsupervised, or a material change in the parenting time schedule. A parent who experiences a temporary setback — brief illness, temporary unemployment, or seasonal income variation — generally does not qualify for modification, as the change must be substantial and likely to persist for a meaningful period. However, a parent who becomes permanently disabled or whose industry undergoes structural change resulting in lasting income reduction would generally qualify for a downward modification of their support obligation.

Florida child support enforcement is handled by the Department of Revenue's Child Support Program as well as private attorneys and the circuit courts. Enforcement tools available in Florida include income withholding orders directed to employers, interception of state and federal tax refunds, seizure of financial accounts and assets, suspension of driver's licenses and professional licenses, and reporting to credit bureaus. Florida can also seek criminal charges for parents who willfully fail to pay support. The state participates in the federal Office of Child Support Enforcement's national enforcement programs, enabling the pursuit of delinquent parents who have relocated to other states. Interstate cases are handled under the Uniform Interstate Family Support Act (UIFSA), which Florida has adopted and enforces through its circuit courts.