Florida final judgments are meant to be stable. That is why a parent who wants to change one has to clear a threshold first, before the court will even look at whether the change would be good for the child. That threshold is the substantial change in circumstances, and understanding exactly what it covers is what separates a modification case that gets heard from one that gets dismissed.
The standard, and what changed in 2023
For years Florida courts applied a three-part test to timesharing modifications: the change had to be substantial, material, and unanticipated at the time of the original judgment. The unanticipated element defeated many otherwise reasonable requests, because a court could say the parties should have seen it coming.
The 2023 amendments to section 61.13(3) removed that element for timesharing. The statute now requires a substantial and material change in circumstances, and that the modification be in the best interests of the child. The unanticipated requirement is gone from the timesharing analysis.
The threshold is lower, not absent. A parent still has to show a real, meaningful change, and then still has to win on the child's best interest.
Changes courts commonly accept
No list is exhaustive, and every case turns on its own facts, but these are the fact patterns that regularly clear the bar:
- A parent relocating, or a move that makes the existing schedule impractical during a school week
- A sustained change in a parent's work schedule that alters availability for the child
- A documented pattern of one parent repeatedly failing to exercise their timesharing
- A serious change in the child's medical, educational, or emotional needs
- Substance abuse, criminal conduct, or domestic violence arising after the judgment
- A parent consistently withholding the child or frustrating the other parent's time
- The child aging into a stage the original plan never addressed
Changes courts usually reject
Just as instructive is what does not qualify. Courts routinely turn away requests built on:
- General dissatisfaction with the schedule, or regret about the settlement
- An older child simply saying they prefer the other house
- Ordinary conflict between the parents that has not affected the child
- A new partner or new stepparent in either household, standing alone
- A single missed exchange or an isolated argument
- A modest change in income, when the guideline result barely moves
Child support has its own test
Support modification runs on a different track. Under section 61.14, a court may modify support when there is a substantial change in circumstances, and section 61.30(1)(b) treats a change that produces at least a 15 percent difference or 50 dollars, whichever is greater, from the current order as substantial.
The change also generally has to be permanent, material, and involuntary. A parent who quits a job or takes a lower-paying position by choice can be treated as still earning at the prior level, through imputed income, so the drop never reaches the guideline in the first place.
Proving it
Modification cases are won on documents. A judge deciding whether the change is real wants records, not recollection: pay stubs and tax returns, a work schedule from an employer, school attendance and grade reports, medical records and provider letters, police reports, and a dated log of exchanges actually kept or missed.
Build the record before filing. A petition filed on a hunch that evidence will appear later is the petition that gets dismissed at the threshold, and a dismissal makes the second attempt harder.
Timing, and the order that governs until then
Support modifications are generally retroactive to the date the petition is filed, not to the date the circumstances changed. Waiting to file costs money that cannot be recovered later.
In the meantime the existing order controls. A parent who stops paying, or who changes the schedule unilaterally because a modification is pending, is exposed to enforcement even if the modification eventually succeeds.
Questions about your own case?
Yvette B. Reyes, Esq. offers a free first consultation, in English or Spanish, for families across South Florida and the Treasure Coast.
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This article is general information about Florida law, not legal advice about your situation, and reading it does not create an attorney-client relationship. Florida law changes, and every case turns on its own facts. Full disclaimer.