Interactive Tool

Florida Child Support Calculator

Get a plain-English estimate of Florida's guideline child support amount under Fla. Stat. § 61.30. Results below are labeled to match the numbered lines of the state's official Form 12.902(e), Child Support Guidelines Worksheet, including the substantial time-sharing adjustment when both parents have the child at least 20% of overnights.

By Attorney Philip W. Graziano, Graziano Law Group, PLLC · Serving Broward, Miami-Dade & Palm Beach Counties · Reviewed September 2026

Income (Worksheet Line 1)

Parent A monthly net income ($) After taxes, FICA, mandatory retirement, health insurance (excluding the child's share), and support paid for other children.

Parent B monthly net income ($) Same net-income definition as Parent A.

Children and Add-On Costs (Worksheet Lines 5–7)

Number of children

Monthly child care costs ($) Work-, job search-, or education-related child care only (Line 5a).

Who actually pays child care directly? Matches Line 7a (or Line 16a for substantial time-sharing).

Monthly child's health insurance & medical costs ($) The child's share of the premium, plus any noncovered medical, dental, or prescription costs (Lines 5b + 5c).

Who actually pays health insurance/medical directly? Matches Lines 7b/7c (or 16b/16c for substantial time-sharing).

Time-Sharing (Worksheet Line 12)

Overnights per year with Parent A Parent B is assumed to have the remaining nights (365 total).

This calculator's line numbers and math follow Florida Family Law Rules of Procedure Form 12.902(e), Child Support Guidelines Worksheet, the form the Florida State Courts require you to file in any case where child support is requested. See the official form and instructions at flcourts.gov.

This calculator provides a general estimate for informational purposes only and is not legal advice. It does not account for imputed income, low-income obligor caps, deviation factors, or every nuance of Fla. Stat. § 61.30. Actual child support amounts are determined by a court or through the Department of Revenue based on verified income and documentation, using the official Form 12.902(e) worksheet filed in your case. Consult Attorney Graziano for guidance specific to your situation.

How This Calculator Works

Florida uses an income shares model under Fla. Stat. § 61.30, and every case where child support is requested requires the parties to complete Florida Family Law Rules of Procedure Form 12.902(e), Child Support Guidelines Worksheet. This calculator follows that form's line numbers so the estimate below mirrors what would appear on the worksheet actually filed with the court. Each parent's net monthly income (Line 1) is added together and run against the state's guidelines schedule to find the Basic Monthly Obligation (Line 2) for the number of children involved. Each parent's Percent of Financial Responsibility (Line 3) and Share of Basic Monthly Obligation (Line 4) follow from their share of the combined income. Reasonable child care and health insurance costs for the child (Lines 5–6) are added, and credit is given for whatever either parent already pays directly (Lines 7–8), before arriving at the Minimum Child Support Obligation for Each Parent (Line 9).

When a court-ordered or agreed time-sharing arrangement gives each parent at least 20% of the overnights in a year (about 73 nights), Florida applies the Substantial Time-Sharing Gross-Up Method under § 61.30(11)(b) and Lines 10–21 of the worksheet: each parent's Basic Monthly Obligation is increased by 150% (Line 10), allocated by income share (Line 11), then multiplied by the percentage of overnights the other parent has (Lines 12–13). Add-on costs and actual payments are layered in the same way (Lines 14–18) before the worksheet nets the two parents' figures against each other to reach the Presumptive Child Support to Be Paid (Line 21).

For combined net income above $10,000 a month, the calculator adds a percentage of the amount over $10,000 to the guideline minimum, using the percentages set out in § 61.30(6)(b). Combined net income between the schedule's data points is estimated using linear interpolation between the two nearest guideline figures.

What This Tool Doesn't Do

This calculator can't account for every variable a court considers, and it isn't a substitute for the actual Form 12.902(e) worksheet that must be filed with the court along with a Financial Affidavit. It doesn't impute income for a voluntarily unemployed or underemployed parent, apply the low-income obligor cap tied to federal poverty guidelines, or weigh deviation factors like extraordinary medical expenses, a parenting plan quirk, or a parent's other financial obligations. A judge can order an amount that varies from the guideline figure by up to 5% without explanation, or more with a written finding. Treat the result as a starting point for a conversation with an attorney, not a final number.

Common Questions

Frequently Asked Questions

How accurate is this child support calculator?

This tool applies the Fla. Stat. 61.30 guidelines schedule and the substantial time-sharing formula to the numbers you enter, but it is an estimate only. Courts can deviate from the guideline amount, income and deductions must be verified with documentation, and factors like imputed income, extraordinary expenses, or low-income obligor rules can change the actual result.

Does this calculator match the official Florida child support worksheet?

Yes. The results are labeled to match the numbered lines of Florida Family Law Rules of Procedure Form 12.902(e), Child Support Guidelines Worksheet, the form the Florida State Courts require in every case where child support is requested. This tool mirrors that form's math so you can see how each figure would appear on the worksheet actually filed with the court.

What counts as substantial time-sharing in this calculator?

Under Fla. Stat. 61.30(11)(b), substantial time-sharing means each parent has the child at least 20 percent of overnights in the year (about 73 nights). When both parents meet that threshold, the calculator applies the statute's gross-up formula found on Lines 10 through 21 of Form 12.902(e), instead of the standard percentage-share calculation on Lines 1 through 9.

What income should I enter?

Enter each parent's net monthly income after allowable deductions such as income tax, FICA, mandatory union dues and retirement contributions, health insurance premiums (excluding the child's portion), and court-ordered support actually paid for other children, as defined in Fla. Stat. 61.30(3). This is the same figure that goes on Line 1 of Form 12.902(e), taken from Line 27, Section I of the Financial Affidavit (Form 12.902(b) or (c)).

Does this calculator account for income above $10,000 combined net income?

Yes. For combined net income above $10,000 per month, the calculator applies the guideline minimum at $10,000 plus the statutory percentage of the income above that amount, as set out in Fla. Stat. 61.30(6)(b).

Can a judge order a different amount than this calculator shows?

Yes. The guideline amount is presumptive, but a court may order an amount that varies by up to 5 percent without explanation, or more than 5 percent with a written finding that the guideline amount would be unjust or inappropriate.

Want Help Applying This to Your Case?

Numbers on a screen are a starting point. Attorney Graziano can review your income, time-sharing arrangement, and expenses, and help you complete and file the actual Form 12.902(e) worksheet the court requires. Schedule a consultation, in person or by video.

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