
Trust Litigation | Coral Gables, Florida
Siblings Fighting Over a Trust in Florida? Understand Your Options Before You Act
Trust Counsel, PL focuses on trust and probate litigation for beneficiaries, heirs and fiduciaries. Start with a free, confidential first consultation with no obligation to continue.
By Leslie V. Marenco · Published October 23, 2026
Siblings fighting over trust Florida disputes usually start with one question: is the trust being run the way the document says? After a parent dies, the trust may favor one child or split assets unevenly. The sibling who isn’t in charge often has little information. Florida law gives beneficiaries real tools to ask questions, get records and go to court when needed. This guide explains those tools and the deadlines that matter most.
Why Siblings End Up in a Trust Dispute After a Parent Dies
Siblings usually end up in a trust dispute over money, property or a sense of being left out. Four triggers are listed below. One sibling gets a smaller share than expected. A trustee makes a decision the other sibling never saw coming. One sibling controls the bank accounts or the paperwork. And the two fight over family items like jewelry, furniture or the family home.
A trust is often a private document. The sibling who is not the trustee may not know the terms until after the parent dies. That gap in information is where many disputes begin.
Is it normal for step siblings to fight? Yes. Conflict over a parent’s estate is common among full siblings and step-siblings alike. The trust terms and the facts drive the legal analysis, not the family history.
If you’re weighing your options, start with the trust litigation attorney overview. It covers the wider range of trust disputes.
If a sibling is holding back trust records or moving assets in a way that feels wrong, you may have a claim worth reviewing soon. Talk it through with Trust Counsel, PL — the first consultation is free, confidential, and carries no obligation.

Which Document Controls: the Trust, the Will, or Both
A revocable trust usually governs the assets titled in its name. A will governs the assets that pass through probate. Many Florida families have both, and siblings often argue over which document covers a given asset.
Titling matters. A house, bank account or brokerage account moved into the trust answers to the trust. An asset left in the parent’s own name, or one with a beneficiary designation, may follow a different route. Read the deed, the account forms and the designations before assuming which document applies.
Two roles get confused. The trustee manages trust assets under the trust terms. The personal representative (often called an executor) handles probate assets under the will and Florida probate procedure. One person can hold both roles, or the roles can split between siblings.
Trust Counsel’s attorneys can serve individually as trustee or personal representative. The firm advises and represents trustees, personal representatives and beneficiaries.
What Florida Requires for a Will to Be Valid
Under Florida law, a will generally must be in writing and signed and witnessed as the statute requires (see Fla. Stat. § 732.502), though the statute recognizes exceptions, such as wills of nonresidents that are valid where executed and certain military testamentary instruments. That is the short answer to the common question about inheritance law and will validity.
Under Fla. Stat. § 732.502, the testator must sign the will at the end, or another person must subscribe the testator’s name at the end in the testator’s presence and by the testator’s direction. The signature or acknowledgment must happen in front of at least two attesting witnesses. The witnesses must sign in the presence of the testator and of each other. A codicil, which is a later change to a will, follows the same formalities.
Formalities are only the first test. Under Fla. Stat. § 732.5165, a will is void if fraud, duress, mistake or undue influence procured its execution. A sibling who questions a will usually raises one of these grounds, and each has its own proof requirements.
So a will that meets the signing rules can still be challenged. Disputes often turn on the parent’s condition at signing, who was present and who arranged the meeting.
How Inheritance Is Split Between Siblings Under a Trust
The trust’s distribution terms decide the split. The terms may call for equal shares, unequal shares or shares held in continuing trusts for each child. Start with the trust document, not with what the family expected.
When the wording is unclear, siblings may need a court to interpret the document. A court reads the whole trust to find what the parent intended. Disputes like this often focus on one clause, such as what “equal” means for property already given away.
A trustee must follow those terms. Under Fla. Stat. § 736.0802, a trustee must administer the trust solely in the interests of the beneficiaries. A transaction affected by a conflict between the trustee’s personal and fiduciary interests can be voidable by an affected beneficiary, unless a listed exception applies.
If a distribution seems wrong, ask the trustee for the reasoning in writing. A written answer, or the lack of one, becomes part of the record. The split often turns on the document’s exact wording, so get the full text before you draw conclusions.
Asking the Trustee for Information and an Accounting
If you are a qualified beneficiary, you can ask for the trust and for details about its administration. Under Fla. Stat. § 736.0813, a trustee must keep qualified beneficiaries reasonably informed. On reasonable request, the trustee must give a complete copy of the trust instrument. The trustee must also share relevant information about assets, liabilities and administration.
The statute also sets timing. For an irrevocable trust created on or after the effective date of this code, or a formerly revocable trust that has become irrevocable, the trustee must notify qualified beneficiaries within 60 days after learning the trust was created or became irrevocable. That notice covers the trust’s existence, the settlor’s identity, the right to request the trust instrument, the right to accountings, and that the fiduciary lawyer-client privilege in s. 90.5021 applies with respect to the trustee and any attorney employed by the trustee. An irrevocable trust’s trustee must also account at least annually and when the trust ends or the trustee changes. A narrow exception applies to certain family trust companies.
An accounting has a required form. Under Fla. Stat. § 736.08135, it must be a reasonably understandable report. It must show all cash and property transactions and significant transactions in the period. That includes compensation paid to the trustee and the trustee’s agents.
Write a request that works. Make it in writing, date it and name the documents you want. Those include the trust instrument, the asset list, bank and brokerage statements and records of payments to the trustee. Set a reasonable response date. If losses came from investment choices, see our page on trustee lawsuits over bad investments.
Options When a Sibling Is Running the Trust Unfairly
The main routes are a written demand, negotiation or mediation, a court petition and a request to remove the trustee. Each route does a different job. Records come first, because they show what happened.
If the trustee won’t cooperate, a court can step in. Under Fla. Stat. § 736.1001, a violation of a duty owed to a beneficiary is a breach of trust. The court may order the trustee to account, compel the trustee to perform duties, or require repayment. It may also reduce or deny the trustee’s compensation.
Removal is another route. Under Fla. Stat. § 736.0706, a beneficiary may ask the court to remove a trustee. The court may remove a trustee for a serious breach of trust. It may also remove one for a lack of cooperation among cotrustees that substantially impairs administration, or for unfitness or persistent failure to administer the trust.
Under this section, the settlor, a cotrustee, or a beneficiary may ask the court to remove a trustee, and the court may also remove a trustee on its own initiative; the section does not address a trustee choosing to step aside. For that question, see our page on whether a trustee can resign to avoid a lawsuit.
Each route has its own requirements and its own limits. The right sequence depends on what the records show.
Not sure what your next step is?
Talk it through with Trust Counsel, PL — the first consultation is free, confidential, and carries no obligation.
Co-Personal Representatives and Probate Conflict Between Siblings
Under Fla. Stat. § 733.615, when joint personal representatives are appointed and the will does not provide otherwise, the concurrence of a majority of joint personal representatives is required on all acts connected with the administration and distribution of the estate for a will executed on or after October 1, 1987. Under Fla. Stat. § 733.615, a majority must concur for wills executed on or after October 1, 1987, unless the will provides otherwise. Exceptions apply when one co-representative receives and receipts for property owed to the estate, when emergency action to preserve the estate can’t readily wait for agreement, or when a joint personal representative has been delegated to act for the others.
A co-representative who disagrees should object in writing. Under the same statute, a dissenting co-representative who expresses dissent in writing to the other joint personal representatives at or before the action is not liable for an action joined in at the majority’s direction.
If the siblings can’t agree, the dispute can reach the probate court. Florida law uses the term personal representative for this role. In a proceeding affecting the estate, the personal representative is treated as an interested person. Our trust litigation overview explains how these estate and trust issues connect.
Challenging a Trust or a Change to It
A sibling can challenge a trust or a change to it, but the deadline can be short. Under Florida law, a contest to a trust that was revocable at the settlor’s death is barred if not commenced within the earlier of two periods: the time provided in chapter 95, or six months after the trustee sent the person a copy of the trust instrument and a notice of the trust’s existence, the trustee’s name and address, and the time allowed for commencing a proceeding. One is the time under chapter 95. The other is six months after the trustee sends the person a copy of the trust and a notice of the trust’s existence.
Amendments follow their own rules. Under Fla. Stat. § 736.0602, a settlor may revoke or amend a revocable trust unless its terms say it is irrevocable; this does not apply to a trust created under an instrument executed before the effective date of this code. If the trust sets no method, the settlor can use a later will or codicil that expressly refers to the trust or specifically devises property that would otherwise have passed under it, or any other method showing clear and convincing evidence of the settlor’s intent.
A sibling may question whether an amendment was signed properly, whether the parent had capacity or whether undue influence was used. Each ground needs its own evidence. Useful proof can include medical records, the drafting history and the people present at signing. Whether a change reflects the parent’s true intent is a fact-specific question for a lawyer to review.
Paths to Resolution: Negotiation, Mediation, and Court
Sibling trust disputes can be resolved by agreement, by mediation or by court order. Each path gives the siblings different levels of control. Direct settlement keeps the most control with the siblings. Mediation adds a neutral mediator. Court puts the final decision with a judge.
A settlement should be in writing. It can define each sibling’s distribution, release specific claims and set a payment schedule. A clear agreement protects each sibling if the trust terms or the facts are disputed later.
If talks fail, litigation starts with a court filing. Discovery follows, where each side requests trust records and documents. Depositions, which are recorded sworn questions, may come next. Hearings and sometimes a trial follow.
A pending case also affects distributions. Under Fla. Stat. § 736.08165, the trustee keeps administering the trust. But no distribution may go against the rights of people who may be affected by the outcome. Fla. Stat. § 736.08165 reads: “(1) Pending the outcome of a proceeding filed to determine the validity of all or part of a trust or the beneficiaries of all or part of a trust, the trustee shall proceed with the administration of the trust as if no proceeding had been commenced, except no action may be taken and no distribution may be made to a beneficiary in contravention of the rights of those persons who may be affected by the outcome of the proceeding.” A court may allow exceptions for good cause, with conditions such as a bond. For more, see our page on stopping trust distributions during a dispute.

Talk With Trust Counsel About Your Sibling Dispute
The first steps are a written records request and an early deadline check. Start with the trust document. Then request the records and calendar the dates that may apply.
Can a trustee refuse to give me a copy of the trust?
Under Fla. Stat. § 736.0813, a trustee must give a qualified beneficiary a complete copy on reasonable request. The statute requires waivers of the trustee’s duty to account, and withdrawals of those waivers, to be in writing; it does not set a writing requirement for requests for copies or information.
How long do I have to challenge a trust?
Under Fla. Stat. § 736.0604, an action to contest a trust that was revocable at the settlor’s death is barred if not commenced within the earlier of the chapter 95 period or six months after the trustee sent the person a copy of the trust instrument and a notice of the trust’s existence, the trustee’s name and address, and the time allowed for commencing a proceeding.
Do co-personal representatives have to agree?
Leslie V. Marenco is the responsible lawyer for this page. Our office is in Coral Gables, Florida. If a sibling is holding back trust records or moving assets in a way that feels wrong, you may have a claim worth reviewing soon. Our first consultation is free, confidential and carries no obligation to continue. Call (305) 707-7126 or schedule online.
How Trust Counsel Approaches Sibling Trust Disputes
Review the trust and its records
We help you understand what the trust says, what documents exist and what information you may be able to request from the trustee.
Evaluate negotiated resolution
Many family disagreements are first addressed through direct discussion or mediation, and we explain how those approaches compare with litigation.
Address trustee conduct
When a trustee's decisions or handling of trust property raise concerns, we discuss the legal avenues available in Florida trust litigation.
Represent beneficiaries, heirs and fiduciaries
The firm advises and represents trustees, personal representatives and beneficiaries. Trust Counsel's attorneys can serve individually as trustee or personal representative.
Be Careful While the Dispute Is Developing
Family conflicts over a trust can escalate quickly. Keep copies of every trust document you already have, avoid moving or distributing trust property without advice, and think carefully before sending messages that could be read later in court.
Common Paths in Sibling Trust Disputes
Requesting trust information
A written request for the trust and related information is often the first step in understanding the situation.
Negotiating with co-beneficiaries
Siblings sometimes resolve differences through structured discussion, with counsel guiding the terms and protecting your interests.
Trust litigation
When the trustee will not cooperate or the dispute cannot be settled, a trust litigation attorney can evaluate court options with you.
Challenging or addressing fiduciary decisions
Concerns about a trustee's accounting, investments or distributions can be reviewed in the context of Florida trust law.