Yes, you can modify child support or custody in Florida, but only when circumstances have substantially changed since your last court order. For child support, that generally means a substantial, material, involuntary, and lasting change. For custody, which Florida calls time-sharing and parental responsibility, it means a substantial change that the court did not expect when it entered the last order, plus proof that the new arrangement is in the child’s best interests.
Wanting a different arrangement is not enough. And until a judge signs a new order, your current order stays in effect, no matter what you and the other parent agree to informally.
Key Facts at a Glance
- Child support: the change must be substantial, material, involuntary, and lasting. When you rely on the guidelines to show the change, the new guideline amount must differ from your current amount by at least 15% or $50, whichever is greater.
- Custody (time-sharing): you must show a substantial change since the last order and that the change you’re asking for serves the child’s best interests. Courts value stability.
- Timing matters: a support modification generally applies from the date you file, not the date your situation changed.
- You must go through the court: verbal or informal agreements between parents don’t change a court order.
When Can You Modify Child Support in Florida?
Child support is calculated with a formula set out in Florida law that uses both parents’ incomes, the number of overnights each parent has, and certain child-related costs. When those inputs change enough, the amount of support may change too.
How the 15% or $50 Rule Works
When you use the guidelines to show a substantial change, Florida law requires the difference between your current support and the new guideline amount to be at least 15% or $50, whichever is greater. This compares two support amounts. It is not a rule about how much a parent’s income has changed.
Example 1: Your current support is $600 a month, and an updated guideline calculation comes to $700. The difference is $100. Fifteen percent of $600 is $90, which is greater than $50, so the threshold is $90. A $100 difference meets it.
Example 2: Your current support is $600 a month, and the updated calculation comes to $650. The difference is $50, which is below the $90 threshold. The change is not enough on its own.
Common Changes That Can Support a Modification
- A significant, lasting change in income. A long-term layoff, a permanent move to lower-paying work, or a substantial raise can all change the guideline amount. If you are asking for a reduction, the income drop generally has to be involuntary and expected to last.
- A change in overnights. When a child spends noticeably more or fewer nights with each parent, support often needs to be recalculated. Florida’s guidelines also use a different formula when a parent has the child for at least 20% of overnights, about 73 nights a year.
- Changes in child care or health insurance costs. These costs are part of the guideline calculation, so a real change in either can change the result.
- Changes in the child’s needs. New medical conditions, ongoing therapy, or special educational needs can support a request for a different amount.
What Usually Does Not Qualify
- Temporary changes, such as a short gap between jobs
- Voluntary decisions, such as quitting a job or cutting hours without a good reason. Florida courts can attribute income to a parent who is voluntarily unemployed or underemployed.
- Remarriage by itself. It doesn’t directly change support, though it may affect a parent’s overall finances.
Losing a Job Does Not Automatically Lower Your Support
This is one of the most common and costly misunderstandings. Your obligation continues at the ordered amount until a court changes it. If you lose your job, you need to file a petition to modify right away and keep paying what you can in the meantime. Unpaid support that has already come due generally can’t be erased later.
Why Timing Matters
A support modification generally takes effect from the date you file your petition, not the date your income dropped or your child’s expenses rose. Every month you wait can mean a month of support you can’t get back, or a month of higher payments you can’t recover.
When Can You Modify Custody in Florida?
Florida no longer uses the terms “custody” and “visitation” in its statutes. Courts approve parenting plans that set out parental responsibility and a time-sharing schedule. When people search for “custody modification,” this is what they mean.
Changing a time-sharing schedule is usually harder than changing child support, because it directly affects a child’s home, school, and routine. Courts are cautious about disrupting stability, and the parent asking for the change has to show:
- A substantial change in circumstances since the last order that was not reasonably expected at the time, and
- That the modification is in the child’s best interests
Situations That May Justify a Change
- A parent’s relocation that makes the current schedule unworkable
- A parent repeatedly failing to follow the parenting plan
- Safety concerns, such as neglect, substance abuse, or an unsafe home
- Changes in the child’s needs, including school, health, and age. A court may consider a mature child’s reasonable preference, but it isn’t decisive.
Relocation Has Its Own Rules
Florida has a specific relocation law. Generally, a parent who wants to move 50 miles or more from their current home for at least 60 days must either reach a written agreement with the other parent or file a petition with the court, and must give proper notice. You can’t simply move and sort out the schedule later. A parent who ignores these rules risks serious consequences in the case.
Military Families
Callaway sits next to Tyndall Air Force Base, and many local parents are service members. Deployments, permanent change of station moves, and shifting duty schedules can all affect a time-sharing plan, and Florida has provisions addressing time-sharing when a parent is deployed. If your order needs to account for military service, see our military divorce page and talk to us early.
Agreed Modification vs. Contested Modification
If both parents agree, the process is usually simpler, faster, and less expensive. You put the agreement in writing, submit it to the court, and a judge reviews and approves it. Without the judge’s signature, the agreement isn’t enforceable.
If the other parent disagrees, you file a petition and the court decides. Florida courts commonly require contested family cases to go through mediation before a hearing. If mediation doesn’t resolve everything, a judge will review the evidence and make a ruling. Contested modifications generally take much longer than agreed ones.
How to Change a Support or Custody Order: Step by Step
Step 1: Confirm you have a qualifying change
Compare your situation to the standards above. For support, run an updated guideline calculation to see whether the difference meets the 15% or $50 threshold.
Step 2: Gather your documents
Collect your current court order or final judgment, recent pay stubs, your most recent tax return, proof of child care costs and health insurance premiums, and any records that show the change. For time-sharing, that can include calendars, school and medical records, and communication between parents.
Step 3: File a supplemental petition
You start a modification by filing a petition with the appropriate Florida circuit court. If support is involved, you will also complete a financial affidavit. We confirm the right court for your case before filing.
Step 4: Notify the other parent
The other parent must be properly served, or must sign paperwork acknowledging the case and agreeing to the terms.
Step 5: Negotiate or attend mediation
Many modification cases settle at this stage, and the agreement is then submitted to the judge for approval.
Step 6: Hearing and court order
If the parents can’t agree, the judge decides after hearing the evidence. Nothing changes until the court signs a new order.
Examples of How Modification Requests Play Out
These are hypothetical examples to show how the rules are applied. Every case depends on its own facts.
Job loss: A parent is laid off through no fault of their own, is unemployed for several months, and then takes a lower-paying job that is likely to last. If they file promptly and the updated guideline amount differs enough from the current amount, the court can lower support going forward. Their request will be looked at more closely if the court thinks the drop in income was a choice.
A schedule change: After a parent’s work schedule changes, a child starts spending four nights a week at their house instead of two, and both parents agree. Support is recalculated for the new overnight schedule, and the parents submit their agreement to the court for approval.
A child’s medical needs: A child is diagnosed with a condition requiring ongoing treatment, and the out-of-pocket costs rise significantly. The parent who pays those costs may ask the court to revisit support.
A move out of state: A parent plans to leave Bay County for a job in another state. Because the move is far more than 50 miles, the parent must follow Florida’s relocation process, and the time-sharing schedule will need to be changed by agreement or by the court.
Common Mistakes That Can Hurt Your Case
- Waiting to file. Because relief generally begins on the filing date, delay costs money.
- Stopping or reducing payments on your own. Unpaid support builds up and can lead to enforcement action.
- Relying on a verbal agreement. Only a signed court order is enforceable.
- Giving incomplete or inaccurate financial information. This can undermine your credibility and delay your case.
- Asking to change time-sharing to “win.” Judges focus on the child’s best interests, not on which parent is ahead.
- Ignoring the relocation rules. Moving before following the process can hurt you in court.
Modifying a Child Support or Custody Order in Bay County
Justin Andersson, P.A. helps parents in Callaway, Panama City, Panama City Beach, Lynn Haven, Springfield, Parker, and Tyndall AFB. Our office is at 435 Oak Ave in Panama City. Here is how we help with a modification:
- Review your current order and tell you whether your situation qualifies
- Run an updated guideline calculation so you know what to expect
- Prepare and file your petition and financial documents
- Negotiate an agreement with the other parent or their attorney
- Represent you in mediation and at the hearing, if needed
You can learn more on our modifications, child support, and child custody pages.
When Should You Talk to a Family Lawyer?
Some agreed modifications are straightforward. But you should consider getting legal help if:
- The other parent disputes your request
- Safety, abuse, or neglect is a concern
- Either parent’s income is complicated, such as self-employment or multiple income sources
- A parent is planning to relocate
- You are not sure whether your change is big enough to qualify
FAQs
There is no strict limit, but each request must meet the legal standard of a substantial change.
Yes, but the agreement must still be approved by the court to be enforceable.
Most cases take between 2 and 6 months, depending on complexity and court schedules.
You can still file a petition, and the court will make a decision based on the evidence.
Not directly, but it may influence financial circumstances in certain cases.
Final Takeaway
Modifying child support or custody in Florida is not automatic; it requires a clear legal basis, strong evidence, and proper procedure. Courts are focused on fairness and the child’s wellbeing, which means every request must be justified, documented, and aligned with legal standards.
If you’re unsure whether your situation qualifies, taking early legal guidance can help you avoid delays, reduce stress, and improve your chances of a successful outcome.
Ready to Modify Child Support or Custody in Florida?
If your circumstances have changed, you don’t have to navigate the legal process alone. Our team can help you understand your options and guide you through every step of modifying child support or custody in Florida. Contact us today to get clear, professional guidance focused on protecting your child’s best interests.