Few questions come up more often in our family law consultations than this one: how much child support will I pay, or receive? The honest answer is that Florida does not leave this to a judge’s personal opinion. Child support is set using a specific formula written into state law, and once you understand the formula, the number becomes far less mysterious. At Mara Law, P.A., we walk parents throughout Ormond Beach, Daytona Beach, Palm Coast, and DeLand through this calculation every week. Here is how it actually works.

Florida Uses the “Income Shares” Model

Florida calculates child support under Florida Statute Section 61.30, using what is called the income shares model. The idea behind it is simple: a child should receive roughly the same share of parental income they would have received if the parents had stayed together. Instead of looking at only one parent’s income, the formula combines both parents’ net monthly incomes, looks up a total support obligation on a state guideline table, and then splits that obligation between the parents based on each one’s share of the combined income.

Step One: Figuring Out Each Parent’s Income

The calculation starts with gross income, which is defined broadly under the statute to include salary, wages, bonuses, commissions, self-employment earnings, rental income, retirement and pension income, Social Security benefits, and investment income. From gross income, certain deductions are subtracted to arrive at net income, including federal and state taxes, Social Security and Medicare contributions, mandatory union dues, and mandatory retirement contributions. If a parent is voluntarily unemployed or underemployed, without a valid reason such as caring for a young child, the court can impute income to that parent based on their recent work history, qualifications, and local job market data, rather than simply accepting a low or nonexistent reported income.

Step Two: Combining Incomes and Finding the Guideline Amount

Once each parent’s net monthly income is determined, the two figures are added together to get the combined net monthly income. That number, along with the number of children involved, is used to look up a baseline support figure on Florida’s statutory guidelines table. This table reflects estimates of what families at different income levels typically spend raising children.

Step Three: Splitting the Obligation Proportionally

Once the total guideline amount is known, each parent’s share is based on their percentage of the combined income. For example, a parent earning 65% of the couple’s combined net income is generally responsible for 65% of the guideline support amount. This is why child support in Florida is rarely a flat, arbitrary number. It moves directly with both parents’ incomes, not just the paying parent’s.

How Timesharing Affects the Calculation

The amount of time each parent spends with the child also factors into the final number. When a parent has at least 20% of overnights per year (73 or more nights), Florida applies a “gross-up” adjustment: the basic support obligation is multiplied by 1.5 before being divided proportionally between the parents. This adjustment recognizes that a parent with substantial overnight time is directly covering more of the child’s day-to-day expenses. Even under a 50/50 equal timesharing schedule, the higher-earning parent will often still owe some support, since the calculation is based on the income gap between the parents, not just the schedule.

What Gets Added on Top of Basic Support

The baseline guideline number is rarely the full story. Florida law also accounts for:

• Health insurance premiums paid for the child, added to the calculation and credited to whichever parent pays them.
• Childcare costs related to a parent’s employment or job search.
• Uncovered medical, dental, and vision expenses, which are typically divided between the parents in the same proportion as their income share.
• Other support obligations, such as support paid for children from a different relationship.

Can the Guideline Amount Be Changed?

Florida courts generally follow the guideline calculation closely, but the law does allow adjustments. A court may deviate from the guideline amount by up to 5% without needing to make specific written findings. A larger deviation is possible, but it requires the court to identify specific factors justifying the change, such as a child’s extraordinary medical or educational needs, a substantial disparity in the time each parent spends with the child beyond what the standard formula captures, or other circumstances that would make the guideline amount clearly unfair. These deviations are the exception rather than the rule, which is exactly why understanding the base formula matters so much going into a case.

Common Questions That Come Up in Palm Coast and Volusia County Cases

A few situations come up often enough locally that they deserve specific mention. Self-employed parents and small business owners often see closer scrutiny of their reported income, since business income is calculated as gross receipts minus ordinary and necessary business expenses, and courts are alert to expenses that are more personal than business-related. Seasonal and retiree income, common among Volusia and Flagler County families, can also complicate the net income calculation and may call for averaging income over a longer period. And blended families, where one or both parents already pay or receive support for children from a different relationship, require careful handling so that existing obligations are properly credited in the new calculation.

Can Child Support Be Modified Later?

Yes. Florida allows a parent to request a modification when there has been a substantial change in circumstances, generally guided by a rule of thumb that the resulting support amount would change by at least 15% or $50 per month, whichever is greater. Common triggers include a significant change in either parent’s income, a job loss, a substantial change in the timesharing schedule, or a change in the child’s healthcare or childcare costs. Support does not adjust automatically when circumstances change. A parent must file a petition to modify, so if your situation has changed significantly, it is worth having your case reviewed rather than assuming the existing order will simply update itself.

A Simple Example of How the Numbers Work

Numbers are often easier to follow with an example. Imagine two parents with one child. One parent has a net monthly income of $4,000 and the other has a net monthly income of $2,000, for a combined net income of $6,000. Florida’s guideline table assigns a total support obligation for one child at that combined income level. Because the higher-earning parent brings in two-thirds of the household’s combined income, that parent is generally responsible for two-thirds of the guideline amount, while the other parent covers the remaining third, typically in the form of the time and direct costs they already provide while the child is in their care. If the child later spends 73 or more overnights per year with each parent, the gross-up adjustment would apply, increasing the baseline obligation before it is divided in the same proportional way. This is a simplified illustration, and every real case involves its own details, but it shows why the same combined income can produce very different results depending on how it is split between the two parents and how time is shared.

Do You Need a Child Support Attorney?

Even though the formula is written into law, real cases rarely involve perfectly clean numbers. Self-employment income, imputed income disputes, health insurance credits, and timesharing calculations all create room for disagreement. An experienced family law attorney can help you:

• Accurately calculate both parents’ true net income, including income that is easy to overlook or hide
• Understand how your specific timesharing schedule affects the number
• Pursue or defend against a request to deviate from the guideline amount
• File for a modification when circumstances genuinely change
• Enforce an existing order when payments stop or fall behind

Frequently Asked Questions

Does 50/50 timesharing mean no child support is owed?

Not necessarily. Even with equal timesharing, if one parent earns significantly more than the other, that parent will often still owe support, since the calculation is based on the income difference between the parents, not just the schedule.

What counts as income for child support purposes?

Florida defines income broadly to include wages, bonuses, commissions, self-employment earnings, rental income, retirement benefits, and investment income. Public assistance benefits are generally excluded.

Can I estimate my child support before going to court?

General online calculators can give a rough idea, but they cannot account for the specific facts of your case, such as imputed income disputes or deviation factors. A consultation with an attorney will give you a far more reliable estimate.

What happens if the other parent stops paying child support?

Florida provides several enforcement tools, including income withholding, license suspension, and contempt proceedings. An attorney can help you pursue enforcement and recover missed payments.

Talk to Mara Law, P.A. About Child Support in Florida. Whether you are establishing a new order, responding to one, or seeking a modification, we will help you understand exactly how the numbers work in your case. Contact Mara Law, P.A. today to schedule a consultation with a family law attorney serving Ormond Beach, Daytona Beach, Palm Coast, and DeLand.