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12.905(a): Supplemental Petition to Modify Parenting Plan and Time-Sharing

Rewrite the plan, know why - name what changed, then prove it with dated facts.

12.905(a) is Florida's Supreme Court approved supplemental petition to modify parental responsibility, visitation, or an existing parenting plan / time-sharing order. You use it in an existing case when you need new court-ordered terms - not to draft a first plan from scratch. That plan-design lane is generally 12.995. Sort whether your story is an outdated plan or a broken order before you file.

When to use 12.905(a)

Florida form instructions state you use 12.905(a) when asking the court to change the current parental responsibility, visitation, and/or parenting plan/time-sharing schedule after a final judgment or prior modification. You must explain a substantial, material, and unanticipated change in circumstances and why the modification is in the child's best interests. File in the circuit court county where the original order was entered, sign before a notary or deputy clerk, and serve the other party per court rules. Circuit e-filing requirements, mediation, and intake steps may vary - confirm locally with official court resources or counsel you hire.

Timesharing gridHoliday methodDecision authorityTransportationChange facts dated
Outdated planBroken order
Move, school zone change, commute math, care collapseSpecific weekend text keeps getting ignored with dated proof
You need new paragraphs for a new real-life weekYou need compliance pressure or clarity on existing lines

Sort before the clerk

  1. Quote the plan sections you say failed.
  2. List change facts with neutral anchors.
  3. Draft replacement timesharing language a reader could enforce.
  4. Confirm circuit supplemental form variant and service.
Modification is not contempt by another name. If your entire brief is missed exchanges under clear clauses, build the log first, then decide whether you are rewriting or enforcing.

12.905(a) (this form)

Supplemental petition to modify parental responsibility, visitation, or parenting plan/time-sharing in an existing case.

Not the same as

  • 12.905(b) - Supplemental Petition for Modification of Child Support
  • 12.905(c) - Supplemental Petition for Modification of Alimony
  • 12.995 - Parenting plan document (substance), not the modification petition

Organize your parenting plan modification facts and evidence

MyCustodyCoach can help you organize dates, schedule problems, messages, and supporting documents in one place before you complete 12.905(a) or speak with counsel. MCC does not file forms for you and is not a substitute for a lawyer.

Get started with MyCustodyCoach

Relevant Florida law

The statutes and appellate decisions below are the ones Florida courts actually apply here. Educational orientation only — not legal advice. Read the source before you rely on it.

Statutes

  • Fla. Stat. § 61.13 — Support of Children; Parenting and Time-Sharing; Powers of Court

    The best interests of the child must be the primary consideration in establishing or modifying parental responsibility or a parenting plan, and a determination of parental responsibility, a parenting plan, or a time-sharing schedule may not be modified without a showing of a substantial and material change in circumstances and a determination that the modification is in the best interests of the child. If the parents lived more than 50 miles apart when the last time-sharing order was entered and a parent moves within 50 miles of the other parent, that move may be considered a substantial and material change, so long as the modification is found to be in the child's best interests. Unless otherwise provided in the section or agreed by the parties, there is a rebuttable presumption that equal time-sharing is in the best interests of the child; to rebut it, a party must prove by a preponderance of the evidence that equal time-sharing is not in the child's best interests. Except when the parties agree to a schedule and the court approves it, the court must evaluate all of the statutory best-interest factors and make specific written findings of fact when creating or modifying a time-sharing schedule. Florida dropped the requirement that the change be 'unanticipated,' and created the equal time-sharing presumption, effective July 1, 2023 (ch. 2023-301). The court must order shared parental responsibility unless it finds that would be detrimental to the child, considering evidence of domestic violence, reasonable fear of domestic or sexual violence, or abuse, abandonment, or neglect.

  • Fla. Stat. § 61.13001 — Parental Relocation With a Child

    A relocation is a change of a parent's principal residence of at least 50 miles from the residence at the time of the last time-sharing order (or the filing of a pending action) for at least 60 consecutive days, not counting temporary absences for vacation, education, or the child's health care. Unless all parties have a written relocation agreement, the parent seeking to relocate must file a petition to relocate, signed under oath, and serve it on the other parent and everyone else with time-sharing; it must state the new address, the move date, the specific reasons (attaching any written job offer), and a proposed post-move time-sharing and transportation schedule, without which the petition is legally insufficient. An objecting party must file and serve a verified written response stating the specific factual basis within 20 days after service; if no timely response is filed the relocation is presumed to be in the child's best interest and the court shall, absent good cause, enter an order allowing it, but if a response is timely filed the parent may not relocate without court permission after a temporary hearing or trial. No presumption for or against relocation applies, the court must evaluate the statutory factors, and the relocating parent has the burden of proving by a preponderance of the evidence that relocation is in the child's best interest; if that burden is met, the burden shifts to the nonrelocating parent to show by a preponderance of the evidence that it is not. Absent good cause, a temporary-relocation hearing must occur within 30 days after the motion is filed and a nonjury trial within 90 days after the notice for trial, and relocating without complying subjects the parent to contempt and may be weighed against them in later relocation and modification decisions. The 'no presumption' rule applies when the move will materially affect the current schedule of contact, access, and time-sharing with the nonrelocating parent. A petition that lacks the proposed post-move schedule is legally insufficient unless a current valid order restricts time-sharing or other good cause predating the petition exists. If everyone with time-sharing signs a written relocation agreement and a case is pending, the court may ratify it without a hearing unless a party requests one in writing within 10 days after it is filed.

Key cases

  • Arthur v. Arthur, 54 So. 3d 454 (Fla. 2010)

    A court cannot make a “prospective” best-interests determination that authorizes a parent to relocate with the child at a future date; the propriety of relocation must be decided on the circumstances at the time of the final hearing, not predicted in advance.

  • Wade v. Hirschman, 903 So. 2d 928 (Fla. 2005)

    Unless the final judgment provides otherwise, the substantial change test applies to modification of all custody arrangements, including a decree adopting the parties' rotating custody agreement, and the court may not re-decide custody as if making an initial determination. The party seeking modification must show both a substantial and material change in circumstances and that the change of custody is in the child's best interests; proof of detriment to the child is not required. The test Wade approved also required that the change not have been reasonably contemplated when the decree was entered, but ch. 2023-301 (effective July 1, 2023) deleted the unanticipated-change requirement, so current s. 61.13(3) requires only a substantial and material change in circumstances and a determination that the modification is in the child's best interests. If the parents lived more than 50 miles apart when the last time-sharing order was entered and one parent moves within 50 miles of the other, that move may be considered a substantial and material change, provided the modification is in the child's best interests (§ 61.13(3)). Unless the parties agree to the schedule and the court approves it, the court must evaluate all the § 61.13(3) factors and make specific written findings of fact when creating or modifying a time-sharing schedule (§ 61.13(2)(c)1., as amended by ch. 2023-301).

12.905(a) questions

What is Florida form 12.905(a)?

Form 12.905(a) is Florida's Supreme Court approved Supplemental Petition to Modify Parental Responsibility, Visitation, or Parenting Plan/Time-Sharing Schedule and Other Relief. You use it to ask the circuit court to change an existing final judgment or prior modification regarding parental responsibility, visitation, or a parenting plan/time-sharing schedule. It is a modification petition, not a first-time parenting plan form.

Where can I download the official 12.905(a) PDF?

Florida Courts publishes 12.905(a) on flcourts.gov. The official form page is under Supplemental Modification Petitions (12.905 Forms A-C), and the English PDF is at flcourts.gov/content/download/685834/file_pdf/905a.pdf (Rev. 11/15). Use the official Judicial Branch links on this page rather than third-party copies.

When should I use 12.905(a) to modify a parenting plan?

Florida form instructions state you use 12.905(a) when asking the court to change the current parental responsibility, visitation, and/or parenting plan/time-sharing schedule in an existing case. The form requires you to explain a substantial, material, and unanticipated change in circumstances since the final judgment or last modification, and why the modification is in the child's best interests. Whether your facts meet that standard is for the court to decide - confirm with official resources or counsel you hire.

Is 12.905(a) filed and served?

Yes. Florida form instructions state you sign before a notary public or deputy clerk, file the original with the clerk of the circuit court in the county where the original order was entered, and properly notify the other party. Personal service is preferred when you know where the other party lives; if personal service is used, the other party generally has 20 days to answer. E-filing rules and circuit intake steps may vary - check with your clerk or family law intake staff.

How is 12.905(a) different from form 12.995?

12.995(a) and 12.995(b) are Florida parenting plan forms where you spell out timesharing, decision-making, and logistics. 12.905(a) is the supplemental modification petition where you ask the court to change an existing order or plan. A modification case may include a proposed or agreed 12.995 parenting plan, but the procedural lane is different from drafting a first plan on 12.995 alone.

What forms may be filed with 12.905(a)?

Florida 12.905(a) instructions list forms that may accompany the petition depending on your request: Uniform Child Custody Jurisdiction and Enforcement Act Affidavit (12.902(d)), Parenting Plan (12.995(a) or 12.995(b)), and conditionally Financial Affidavit (12.902(b) or 12.902(c)), Child Support Guidelines Worksheet (12.902(e)), and Notice of Social Security Number (12.902(j)). Form 12.905(b) is for child support modification and 12.905(c) is for alimony modification - not substitutes for 12.905(a). Not every modification requires every listed form.

MyCustodyCoach is not a law firm. Court rules, fees, and form versions change by county; confirm what applies to your case with official court resources or counsel you hire.