Florida Child Support: Calculation, Enforcement, and Changes

Florida child support is set by a formula that combines both parents’ incomes, assigns a basic monthly amount based on how many children you have, and splits that amount between the parents in proportion to what each one earns. The number the formula produces is what a judge is presumed to order, though there’s room to adjust it, add costs like health insurance and childcare, and change it later when circumstances shift.

How the Amount Is Calculated

The calculation starts with each parent’s gross monthly income. Florida defines gross income broadly: wages, bonuses, commissions, overtime, self-employment earnings, disability benefits, workers’ compensation, unemployment, pensions, Social Security, interest, dividends, rental income, spousal support from a prior marriage, and even reimbursed expenses that cut your living costs.¹ The point is to capture what you can actually earn, not just what one paystub shows.

From gross income, the court subtracts a specific list of deductions to reach your net income:

Federal, state, and local income taxes based on your actual filing status
Social Security and Medicare taxes, or self-employment tax
Mandatory union dues
Mandatory retirement contributions
Health insurance premiums for yourself (not the child’s share)
Court-ordered support for other children that you’re actually paying
Spousal support paid under a court order from a prior marriage

The two net incomes get added together and plugged into the statutory schedule in section 61.30, which assigns a basic monthly support amount based on the combined figure and the number of children. The schedule covers combined net incomes from $800 to $10,000 a month. Above $10,000, the obligation is the top schedule amount plus a percentage of the overage, ranging from 5 percent for one child to 12.5 percent for six.¹

Each parent then owes a share that matches their share of the combined net income. If you bring in 65 percent of the combined total, you’re responsible for 65 percent of the basic amount. Usually the parent with fewer overnights writes the check; the other parent is assumed to be spending their share on daily care.

Health Insurance, Childcare, and Uninsured Medical Costs

The schedule number does not include everything a child costs. The court adds the child’s health, dental, and vision insurance premiums, plus work-related childcare like daycare or after-school care, on top of the basic obligation. Out-of-pocket medical, dental, and prescription costs that insurance doesn’t cover are also factored in. All of these additions get split in the same income-based proportion as the basic amount.¹

The 73-Night Overnight Rule

Overnights matter in a very specific way. When a parent has the child for at least 20 percent of overnights in a year, which equals 73 nights, the court switches to a substantial time-sharing calculation. Each parent’s share of the basic obligation is multiplied by 1.5, then cross-multiplied by the percentage of overnights the other parent has, and the difference between the two figures becomes the payment, adjusted for childcare and insurance.¹ The adjustment usually lowers what the paying parent owes, because that parent is already covering costs during their own parenting time. Fall one night below 73 and the standard formula applies instead. Count carefully.

If a Parent Isn’t Working or Won’t Participate

A parent can’t lower support by quitting a job or taking fewer hours by choice. When the court finds unemployment or underemployment to be voluntary, it imputes income — meaning the formula uses what the parent could be earning given their recent work history, qualifications, and prevailing local wages, not what they actually report.¹

If a parent skips the hearing or refuses to turn over financial information, Florida applies a rebuttable presumption that they earn the median income of full-time, year-round workers from U.S. Census data. The parent can push back with evidence, but the burden is on them. Incarceration is treated differently: a parent in prison is generally not treated as voluntarily unemployed, unless the imprisonment is for willful nonpayment of child support or for an offense against the child or the other parent.

When a Judge Can Depart From the Guideline Number

The number the formula produces is presumptive, not fixed. A court can adjust it by up to 5 percent in either direction without explanation. Anything larger requires a written finding that the standard amount would be unjust or inappropriate.¹ The statute lists reasons a judge may rely on, including:

Unusually high medical, psychological, educational, or dental expenses
Independent earnings or assets of the child (excluding SSI)
Seasonal income swings for one or both parents
The child’s age, since older children generally cost more
Special needs the family has historically absorbed
The 55 percent cap — a single order cannot require a parent to pay more than 55 percent of gross income in current support
Significant time with the child that falls short of the 73-night trigger

Judges also look at the effect of the Child and Dependent Care Credit and the Earned Income Tax Credit, and can require a parent who is current on support to sign the dependency exemption over to the other parent.

Filing a Case and the Financial Affidavit

You can open a case two ways: file a petition with the Clerk of the Circuit Court in your county, either in person or through the Florida Courts E-Filing Portal, or apply through the Florida Department of Revenue’s Child Support Program, which can establish an order administratively.²³ Filing fees apply, with an indigent-status application available if you can’t afford them.

Whichever route you take, both parents must file a Family Law Financial Affidavit. If your gross annual income is under $50,000, you file the short form, 12.902(b); at $50,000 or more, you file the long form, 12.902(c).⁴⁵ The parents cannot waive the affidavit by agreement. Pull together recent pay stubs, your most recent federal tax returns, health insurance premium statements, and childcare receipts before you sit down with the form. You sign under oath, and inaccurate information carries perjury consequences.

Florida can also order retroactive support covering up to 24 months before you filed, dating to when the parents stopped living together with the child. The court uses the current guidelines but will consider the other parent’s actual income during that period if proven, and will credit money that parent already spent on the child. Large retroactive balances are often paid in installments.¹

How Payments Actually Move

Nearly every Florida support order includes an income deduction order, which tells the paying parent’s employer to withhold the support amount from each paycheck and send it to the Florida State Disbursement Unit.⁶ It takes effect immediately unless the court finds good cause to delay it in writing. If there’s a past-due balance, the employer must withhold an additional 20 percent or more of the periodic amount until the arrearage is cleared.

The State Disbursement Unit then sends the money to the receiving parent electronically. Paper checks are not an option in Florida; you choose direct deposit or a prepaid card.⁷ Running everything through the SDU builds an official payment record that protects both sides. Direct parent-to-parent payments require court approval and often cause proof problems later if enforcement comes up.

Taxes

Child support is not taxable income for the parent who receives it, and it is not deductible for the parent who pays. You don’t report child support received anywhere on your federal return.⁸ This differs from the rule for some alimony payments, which trips people up when a single order addresses both.

Changing the Order Later

Either parent can ask the circuit court to raise or lower the support amount when the financial picture or the child’s needs change. Job loss, a significant raise, a shift in time-sharing, or new medical needs are typical reasons.⁹ When the Department of Revenue reviews an existing order, it uses a specific trigger: if the current order differs from what today’s guidelines would produce by at least 10 percent and at least $25, the agency will pursue a modification without needing to separately prove changed circumstances.

A court-approved modification can be made retroactive to the date you filed the petition, not the date of the hearing. If your income drops, file promptly. Waiting doesn’t preserve relief; it loses it.

What Happens If Payments Stop

Florida’s enforcement toolkit is broad, and the consequences escalate the longer an arrearage sits.

License suspension. Once a parent is just 15 days delinquent, the child support agency or clerk can send notice of intent to suspend driver’s license and vehicle registration, with 20 days to pay, enter a payment agreement, or contest. The same process reaches professional, business, and recreational licenses.¹⁰
Civil contempt. The receiving parent can ask the court to hold the other in contempt. If found, the court sets a purge amount the parent must pay to avoid or get out of jail. Sentences can run up to six months, but a court cannot jail a parent who genuinely cannot pay.
Federal tax refund intercept. Past-due support can be taken from a federal tax refund through the Treasury Offset Program. The threshold is $150 if the receiving parent is on public assistance and $500 otherwise.
Passport denial. Arrears of $2,500 or more can result in a denied or revoked U.S. passport.¹¹
Credit reporting. Arrears are reported to the credit bureaus.
Bank account levies. Courts can order funds seized from accounts to satisfy unpaid support.

The 15-day license-suspension trigger surprises people. It isn’t 15 days late after years of clean payments; it is 15 days past due on any required payment. If you see trouble coming, calling the child support agency before you fall behind opens far more options than waiting for enforcement to start.

When the Obligation Ends

Support generally ends when the child turns 18. If the child is still in high school at 18, performing in good faith with a reasonable expectation of graduating, support continues until graduation or the 19th birthday, whichever comes first.¹² Florida does not require parents to pay for college, so enrolling in a university doesn’t extend the obligation.

Children with disabilities are the major exception. If a mental or physical incapacity began before the child turned 18 and prevents self-support, the court can order support to continue indefinitely, ending only when a parent shows the child can live independently, or on the death of a parent or child.

1
The Florida Legislature. Florida Code 61.30 – Child Support Guidelines; Retroactive Child Support
2
Florida Courts Help. Filing Your Forms
3
Florida Department of Revenue. Florida Child Support Program – Establish Support Orders
4
Florida Courts. Florida Family Law Rules of Procedure Rule 12.285 – Mandatory Disclosure
5
Florida Courts. Instructions for Florida Family Law Rules of Procedure Form 12.902(b)
6
The Florida Legislature. Florida Code 61.1301 – Income Deduction Orders
7
Florida Department of Revenue. Florida Child Support Program – Receive Payments
8
Internal Revenue Service. Publication 504 – Divorced or Separated Individuals
9
Florida Senate. Florida Code 61.14 – Enforcement and Modification of Support, Maintenance, or Alimony Agreements or Orders
10
The Florida Legislature. Florida Code 61.13016 – Suspension of Driver Licenses and Motor Vehicle Registrations
11
Administration for Children and Families. Passport Denial Program 101
12
The Florida Legislature. Florida Code 743.07 – Removal of Disabilities of Nonage