How to Modify Child Support in Florida — Hernando County Guide
Florida courts modify child support only when a parent proves a substantial change in circumstances under Florida Statute § 61.14 (2025), and the recalculated guideline differs by at least 15 percent or $50 per month.
The Fifth Judicial Circuit in Hernando County applies both thresholds before granting any modification.
Christopher S. Mulligan, Esq., a Brooksville family law attorney with more than 17 years of practice in the Fifth Judicial Circuit, represents parents seeking and defending child support modifications in Hernando County.
Key Takeaways
- Florida Statute § 61.14 (2025) governs child support modification — a parent must prove a substantial change in circumstances and meet the 15 percent or $50 threshold under Florida Statute § 61.30(1)(b) (2025).
- A child support obligation continues to accrue at the existing amount until the Hernando County Circuit Court enters a new order — a verbal agreement between parents has no legal effect.
- A parent filing for modification in Hernando County uses Florida Supreme Court-approved Family Law Form 12.905(b), which is filed with the Hernando County Clerk of Circuit Court.
- Retroactive modification is not available — the court modifies support from the date the petition is filed, not the date the change in circumstances occurred.
Schedule a consultation at 352-593-5990 before filing — the petition date determines how far back any new order can reach.
What Does Florida Law Require to Modify Child Support
Florida Statute § 61.14 (2025) requires a parent seeking modification to demonstrate a substantial change in circumstances since the last order was entered. Florida Statute § 61.30(1)(b) (2025) adds a numerical threshold — the difference between the existing monthly obligation and the recalculated guideline amount must be at least 15 percent or $50, whichever is greater, before the Hernando County Circuit Court will find that the guidelines support a substantial change.
A substantial change must be significant, largely permanent, and not something the court anticipated when the original order was entered. Temporary setbacks — a short-term layoff, a brief medical situation, or a seasonal income dip — generally do not satisfy the threshold unless the parent can demonstrate the change is ongoing and unlikely to resolve.
Florida Statute § 61.14 (2025) also requires that the change be involuntary in most circumstances. A parent who voluntarily quits employment to reduce a support obligation cannot rely on the resulting income drop to support a downward modification petition in the Fifth Judicial Circuit.
What Qualifies as a Substantial Change in Circumstances for Child Support in Florida
A substantial change under Florida Statute § 61.14 (2025) is one that is significant, largely permanent, and directly affects either parent’s ability to pay or the child’s financial needs.
The Hernando County Circuit Court recognizes the following as qualifying changes:
- A documented, involuntary loss of employment or reduction in income
- A significant increase in either parent’s income since the last order
- A substantial change in the overnight time-sharing schedule that alters the guideline calculation under Florida Statute § 61.30
- A new or significantly increased medical expense for the child
- A material change in childcare costs tied to either parent’s employment
- A change in health insurance coverage affecting the cost added to the basic obligation
- A parent’s permanent disability reduces earning capacity
A parent’s voluntary decision to leave employment, take a lower-paying job without cause, or reduce work hours to avoid a support obligation does not qualify.
The Fifth Judicial Circuit will not grant a downward modification based on a self-imposed income reduction.
How Do You File a Child Support Modification Petition in Hernando County
A parent files Florida Supreme Court Approved Family Law Form 12.905(b) — the Supplemental Petition for Modification of Child Support — with the Hernando County Clerk of Circuit Court at 20 N Main St, Brooksville, FL 34601.
The petition must be filed in the same circuit court that entered the original child support order under Florida Statute § 61.14.
Step 1 — Calculate Whether the Threshold Is Met
Before filing, a parent should calculate whether the recalculated guideline amount differs from the current order by at least 15 percent or $50 per month under Florida Statute § 61.30(1)(b) (2025). Filing a petition that does not meet the numerical threshold wastes court time and legal fees.
A parent can estimate the new guideline amount using both parents’ current net monthly incomes, the updated time-sharing schedule, and current healthcare and childcare costs.
Step 2 — Gather Financial Documentation
The Hernando County Circuit Court evaluates the modification petition based on verified financial documentation, not estimates. Relevant documentation includes:
- Recent pay stubs covering the last 3 months
- Most recent federal tax returns — typically the last 2 years
- Termination letter or employer documentation of a job loss or income reduction
- Medical records or bills documenting a new or increased child healthcare expense
- Updated childcare invoices reflecting a material cost change
- Health insurance premium statements showing a coverage change
Step 3 — Complete the Required Forms
The required filing package for a child support modification in Hernando County includes:
- Form 12.905(b) — Supplemental Petition for Modification of Child Support
- Form 12.902(b) — Financial Affidavit Short Form (income under $50,000 per year)
- Form 12.902(c) — Financial Affidavit Long Form (income over $50,000 per year)
- Form 12.902(e) — Child Support Guidelines Worksheet
- Form 12.932 — Certificate of Compliance with Mandatory Disclosure (filed within 45 days of service)
- Certificate of Service confirming the other parent received the petition
Additional Fifth Circuit local forms are available through the circuit5.org self-help center.
Step 4 — File, Serve, and Wait for a Response
The completed petition is filed with the Hernando County Clerk of Circuit Court. The petitioning parent must formally serve the other parent under the Florida Rules of Civil Procedure after filing. The other parent has 20 days to respond after service.
The Hernando County Circuit Court requires a hearing before entering a modification order — a non-response does not automatically result in a default modification order.
Step 5 — Attend Mediation and the Modification Hearing
The Fifth Judicial Circuit requires both parents to attempt mediation before a modification hearing is scheduled in most cases. The Fifth Judicial Circuit requires a close-out letter from mediation confirming the attempt before the court sets a hearing date.
Both parents submit an agreed modification to the Hernando County Circuit Court for approval without a contested hearing. A contested modification proceeds to a hearing, where the court evaluates the financial evidence and issues a new order if the § 61.14 standard is met.
Mr. Mulligan prepares modification petitions for Hernando County parents from the initial calculation through the hearing, so the financial documentation supports the petition from the first filing.
Parents whose circumstances have already changed should not wait — the modification takes effect from the filing date, not the date the change occurred. Call 352-593-5990 to retain representation before filing.
What Evidence Supports a Child Support Modification in Florida
The Hernando County Circuit Court evaluates a modification petition based on the financial records built before the hearing. Strong evidence must directly connect the change in circumstances to the guideline recalculation — not just demonstrate that a parent’s life has changed.
Evidence That Strengthens a Modification Petition
- Pay stubs and employer records documenting a reduction or increase in gross monthly income
- Tax returns showing a sustained income change over the prior 12 to 24 months
- Medical records and billing statements documenting a new or materially increased child healthcare expense
- Updated childcare invoices showing a material cost change since the last order
- Health insurance premium statements documenting a change in coverage cost
- Court orders reflecting a change in the overnight time-sharing schedule
Evidence That Supports a Defense Against Modification
A parent defending against an upward modification should document consistent income, stable childcare and healthcare costs, and the absence of any material change in the child’s financial needs since the last order was entered.
How Long Does a Child Support Modification Take in Hernando County
An uncontested child support modification in Hernando County generally resolves within 60 to 90 days after filing when both parents agree on the new amount, mediation is completed promptly, and the financial paperwork is complete — these are general estimates based on Fifth Judicial Circuit docket conditions, not statutory deadlines.
A contested modification proceeding to a hearing before the Fifth Judicial Circuit generally takes 4 to 9 months from filing to final order, depending on the court’s docket and the number of contested financial issues requiring a hearing.
When a Parent Cannot Wait for the Standard Timeline
A parent facing an immediate, severe income disruption — a permanent disability, a termination with no prospect of comparable employment — may seek a temporary support modification alongside the primary petition.
The Hernando County Circuit Court can enter a temporary order under Florida Statute § 61.14 pending the full hearing. Mr. Mulligan handles temporary support motions for Hernando County parents when financial circumstances cannot wait for the standard modification timeline.
Frequently Asked Questions
What is the legal standard to modify child support in Florida?
Florida Statute § 61.14 (2025) requires proof of a substantial, largely permanent, and involuntary change in circumstances since the last order. Florida Statute § 61.30(1)(b) (2025) also requires the recalculated guideline to differ from the current obligation by at least 15 percent or $50 per month.
What qualifies as a substantial change in circumstances for child support modification?
A substantial change under Florida Statute § 61.14 (2025) is significant, largely permanent, and involuntary. Qualifying changes include a documented job loss, a significant increase in income, a material shift in the overnight time-sharing schedule, a new child-related medical expense, or a material change in childcare or health insurance costs.
What is the 15 percent or $50 threshold for child support modification in Florida?
Florida Statute § 61.30(1)(b) (2025) requires the difference between the current monthly obligation and the recalculated guideline amount to be at least 15 percent or $50, whichever is greater. A change producing a smaller recalculated difference does not meet the statutory threshold in the Hernando County Circuit Court.
What form do I file to modify child support in Hernando County?
A parent files Florida Supreme Court Approved Family Law Form 12.905(b) with the Hernando County Clerk of Circuit Court at 20 N Main St, Brooksville, FL 34601. The filing package requires a Financial Affidavit, a Child Support Guidelines Worksheet using Form 12.902(e), and a Certificate of Service confirming the other parent was served.
Can a parent stop paying child support while a modification petition is pending in Florida?
No. A child support obligation continues at the existing amount until the Hernando County Circuit Court enters a new order under Florida Statute § 61.14. A parent who reduces or stops payments while a petition is pending accrues arrears at the existing rate, regardless of the outcome of the modification.
Does a verbal agreement between parents to change child support count in Florida?
No. A verbal agreement to modify child support has no legal effect in Florida. The existing court order remains enforceable at the original amount until the Hernando County Circuit Court enters a written modification order. A parent who pays a reduced amount under a verbal agreement accrues legally enforceable arrears.
Can child support be modified retroactively in Florida?
No. Florida courts modify child support from the date the petition is filed — not the date the change in circumstances occurred. A parent who delays filing loses the benefit of the earlier change date, so filing promptly when a qualifying change occurs yields the earliest possible effective date of the modification.
How long does a child support modification take in Hernando County?
An uncontested modification generally resolves within 60 to 90 days when mediation is completed promptly, and financial documents are complete — a general estimate based on docket conditions, not a statutory deadline. A contested modification before the Fifth Judicial Circuit generally takes 4 to 9 months, depending on the complexity of the financial issues.
What role does mediation play in a child support modification case in Florida?
Mediation is a required step in most Hernando County modification cases before the court schedules a hearing. Both parents must attempt mediation and obtain a close-out letter before the Fifth Judicial Circuit sets a hearing date. An agreed modification is submitted to the court for approval without a contested hearing.
Can a parent modify child support if the other parent’s income increases significantly?
Yes. A significant, documented income increase in either parent qualifies as a substantial change under Florida Statute § 61.14 (2025), provided the recalculated guideline differs from the current obligation by at least 15 percent or $50 per month under Florida Statute § 61.30(1)(b) (2025).
A child support order that no longer reflects either parent’s financial reality puts unnecessary strain on both households. Mr. Mulligan has represented Hernando County parents in support modification proceedings since 2007 — call 352-593-5990 or schedule a consultation before the financial gap between your obligation and your income grows any wider.
About the Author
Christopher S. Mulligan
Florida Bar Member in Good Standing since November 9, 2007 (Bar No. 47524) · J.D., The George Washington University Law School, 2006
Christopher S. Mulligan is a third-generation Florida attorney and founder of Mulligan & Associates in Brooksville, Florida. He drafted provisions of the 2005 Violence Against Women Act reauthorization and serves as a Guardian ad Litem and Attorney ad Litem for children in foster care. He represents families in divorce, custody, support, adoption, dependency, and injunction matters throughout the Fifth Judicial Circuit.