Situations change. Jobs move, incomes rise and fall, children grow, households relocate. When your parenting plan or divorce judgment no longer matches reality, Florida law provides a path to change it — and when the other parent simply ignores the order that exists, the law provides teeth. Both halves take proof, and both are lost more often on preparation than on merits.
The standard — and a 2023 change worth knowing
Modifying time-sharing or support requires showing a substantial and material change in circumstances. For parenting plans, the 2023 legislation removed the old requirement that the change also be unanticipated — a meaningful easing of the standard. A schedule that no longer serves your child can be revisited.
What has not changed is the burden. You are asking a court to disturb something it already decided was in the child’s best interests, and judges start from the position that stability has value. The change has to be real, it has to have happened since the last order, and it has to matter to the child rather than merely to the parents.
Modifying a parenting plan or time-sharing schedule
The grounds we see most often, and what each actually requires:
- A parent’s changed availability. A new shift pattern, a job that ends the travel, a return from deployment. Documented schedules beat assertions.
- The child’s needs have changed. A toddler schedule rarely suits a teenager. School, activities and the child’s own reasonable preference all carry weight as they age.
- Repeated failure to exercise time-sharing. A parent who consistently does not take their days is not just breaching the plan — it is treated as a substantial change for child-support purposes, which can move the support number as well as the schedule.
- Safety, substance abuse or a new household member. Serious, and evidence-driven — see substance abuse in divorce and custody.
- Relocation. Its own statute, below.
For how time-sharing is decided in the first place, including the 2023 equal-time presumption, see time-sharing and custody.
Relocation: the 50-mile rule
Florida’s relocation statute, section 61.13001, governs any move of more than 50 miles from the principal residence for 60 days or longer. It requires either the other parent’s written agreement or a court order — obtained before the move.
Relocating first and asking afterwards is the single most damaging thing a parent can do in these cases. Courts can order the child returned, and the unauthorised move becomes the lens through which everything else about you is judged. If you are the parent being asked to agree, your written agreement has statutory requirements too; a text message saying “fine” is not the document you want to rely on.
Modifying child support
Child support is modified on a substantial change as well, and the guidelines give a usable test: a difference of at least 15% or $50 — whichever is greater — between the existing obligation and what the guidelines would produce today.
Common triggers are an involuntary income change, a change in the overnight split that crosses the 20% threshold, health-insurance or childcare costs shifting, or a child ageing out. Two cautions. A voluntary income reduction invites imputation at your earning capacity rather than a lower payment. And relief generally runs from the date you file, not the date your circumstances changed — waiting costs money you cannot recover. More at child support.
Modifying alimony
Under section 61.14, the amount of durational alimony can be modified or terminated on a substantial change. The length cannot, except in exceptional circumstances. Two further routes exist: a supportive relationship under section 61.14(1)(b), and a reasonable retirement under section 61.14(1)(c). Alimony also terminates on the recipient’s remarriage or either party’s death.
Bridge-the-gap alimony is the exception to all of it — it cannot be modified in amount or duration by anyone, for any reason. See alimony, durational alimony and bridge-the-gap alimony.
If a petition has already been filed against you, the defence side of this test is covered in detail at defending against a modification petition.
What is not a substantial change
Worth knowing before you spend money on a petition:
- Disliking the existing order, or regretting what you agreed to at mediation.
- A change you engineered yourself — quitting a job, moving without cause.
- A temporary dip that has already resolved by the time of the hearing.
- The other parent’s new partner, absent an actual effect on the child.
- Ordinary, expected change — a modest raise, a child getting a year older.
An honest assessment at the outset is cheaper than a denied petition and a fee award against you.
Enforcement and contempt
When a former spouse or co-parent refuses to pay support, denies time-sharing, or violates the judgment, we file the appropriate enforcement and contempt actions — documenting the pattern, quantifying the arrears, and asking the court for the remedy that actually fixes it.
The toolbox is genuinely serious: income deduction orders that take support straight from wages, money judgments for arrears with interest, driver’s and professional licence suspension, tax-refund interception, make-up time-sharing, attorney’s fees, and in persistent cases incarceration for civil contempt. For time-sharing violations specifically, a court can order make-up time, modify the plan, and require the offending parent to pay the other’s costs.
What decides these motions is the record. Keep your own compliance spotless, document every missed exchange or payment contemporaneously, and do not self-help — withholding the child because support is unpaid, or withholding support because time-sharing was denied, converts you from the complaining party into a co-violator.
Out-of-state and international parents
Jurisdiction is its own fight. Custody follows the UCCJEA, which generally keeps modification power with the state that issued the order while a party still lives there. Support follows UIFSA: an out-of-state order can be registered and enforced in Florida, but the issuing state usually retains the power to modify it.
So it is entirely possible to live in Orlando, be enforcing here, and still have to go back to another state to change the order. Working out which court can do what is the first question in any multi-state matter, and getting it wrong wastes a year.
Modification and enforcement FAQs
You file a supplemental petition for modification and prove a substantial and material change in circumstances since the last order, and that the change you want is in the child’s best interests. Since 2023 the change no longer has to have been unanticipated, which lowered the bar meaningfully. Stability still carries weight with judges, so the change has to be real and it has to matter to the child rather than to the parents.
Yes, and it also affects money. A parent’s failure to regularly exercise the ordered time-sharing is treated as a substantial change in circumstances for child-support purposes, so the support calculation can be revisited alongside the schedule. Document every missed exchange as it happens — a contemporaneous record is far more persuasive than a reconstruction.
Florida’s relocation statute covers any move of more than 50 miles from the principal residence for 60 days or more, and it requires your written agreement or a court order before the move happens. If they have already gone without either, act immediately — courts can order the child returned. If you are considering agreeing, the written agreement has statutory requirements; do not rely on a text message.
The practical test is a difference of at least 15% or $50 — whichever is greater — between the current obligation and what the guidelines would produce now. Two things catch people out: a voluntary income drop invites income to be imputed at your earning capacity instead, and relief usually runs from the date of filing rather than the date your circumstances changed. File promptly.
Enforcement and contempt. The court can enter an income deduction order taking support directly from wages, reduce arrears to a money judgment with interest, suspend driver’s and professional licences, intercept tax refunds, award your fees, and in persistent cases order incarceration for civil contempt. What it will not do is help if you retaliate by withholding the children — that makes you a violator too.
No. Support and time-sharing are separate obligations and Florida courts treat self-help harshly in both directions. Withholding support because you are being denied the children turns a strong enforcement case into two competing contempt motions, and you will be the one with arrears. File the enforcement motion instead.
Possibly Florida, but check first. Custody modification follows the UCCJEA and support follows UIFSA, and both generally leave modification power with the issuing state while a party still lives there. Once everyone has left that state, jurisdiction can usually be moved here through registration. Getting this question wrong at the outset can waste a year, so it is the first thing to resolve.
You can agree, but until a court adopts it the old order is the one that gets enforced. Informal arrangements work right up until the day they do not, and then the parent who relied on the handshake discovers they have been in violation for two years. If you both agree, an agreed modification is quick and inexpensive — get it entered.
This page is general information about Florida law as of its last review and is not legal advice. Modification and enforcement outcomes depend on facts a page cannot know. Citations are to sections 61.13, 61.13001, 61.14 and 61.30, Florida Statutes, and to the UCCJEA and UIFSA.