
Probate & Trust Litigation | Coral Gables, Florida
How Can You Prove Undue Influence in Florida?
Trust Counsel, PL focuses on probate and trust litigation for beneficiaries, heirs and fiduciaries. Here is how these disputes are typically investigated and documented.
By Leslie V. Marenco · Published October 22, 2026
How can you prove undue influence in Florida? Florida law voids a will or trust procured that way. Proof usually comes from several facts viewed together, not from one moment. This page explains the basic rules, the burden of proof, the evidence courts often review, and the deadlines that can close a challenge early.
What undue influence means in a Florida will or trust contest
Ordinary persuasion is different. A relative who visits often, or who offers an opinion about family matters, is not automatically exercising undue influence. Kindness and advice are not the same as control.
Being upset about who received what is not enough on its own. Florida law says a will is void if its execution was procured by fraud, duress, mistake, or undue influence. A trust, or part of a trust, is void if its creation, amendment, or restatement was procured by fraud, duress, mistake, or undue influence. See Fla. Stat. § 732.5165 and Fla. Stat. § 736.0406.
Each case turns on its own facts. The documents, the medical history, and the records from the signing period will shape the analysis.
Not sure what your next step is?
Talk it through with Trust Counsel, PL — the first consultation is free, confidential, and carries no obligation.

The elements courts commonly look at
Courts commonly look at three things. Was the person open to influence? Did another person have the ability to influence them? Did that person actually use it to shape the document?
These points are usually proven together. A challenger might show that the person was frail and dependent. They might show that a beneficiary controlled the calendar, and that the change came right after that beneficiary took over daily care. No single fact may settle the question. Taken together, though, they can tell a clearer story.
You do not need direct proof of every point. Circumstantial proof, meaning facts that support a reasonable conclusion, is commonly used. A court may draw inferences from timing, access, and changes in behavior.
A California court guide on undue influence notes that these claims can be difficult to prove. It lists circumstances often tied to them, including physical dependency, mistreatment, and the alleged influencer’s role in signing documents. That guide describes California practice, so use it for general patterns only.
When the presumption of undue influence can apply
The presumption can apply when a beneficiary had a confidential or fiduciary relationship with the person.
Florida’s trust statute, Fla. Stat. § 736.0406, says a trust, or any part of it, is void if its creation, amendment, or restatement is procured by fraud, duress, mistake, or undue influence. Section 732.5165 says a will is void if its execution is procured by fraud, duress, mistake, or undue influence. Fla. Stat. § 732.5165
Burden of proof means who must prove a point. In a will contest, the person defending the will first shows it was formally signed and attested. The Florida Probate Rule 5.275 sets out the same starting point. After that, the challenger must prove the grounds for the challenge.
Active involvement is the key fact. A challenger may point to facts such as arranging meetings with the drafter, choosing the attorney, giving the drafter instructions, or being present when the document was signed. These are facts to examine, not automatic proof.
Once the presumption applies, it shifts the burden of proof under sections 90.301–90.304, Florida Statutes, so the beneficiary must respond with evidence. The challenger presents facts. The beneficiary responds with their own.
Evidence that tends to matter in these cases
Medical and cognitive records from near the signing date are commonly reviewed first. Earlier wills and trusts are also useful for comparison. Other evidence often includes:
- Medical and cognitive records near the signing, showing the person’s condition at that time.
- Prior wills and trusts, to see what changed and when.
- Timing, especially changes made close to a hospital stay, a diagnosis, or a move.
- Financial records and communications showing who controlled money, mail, and phone calls.
- Signs of isolation or secrecy, such as limited visits or a change kept from other family members.
- Testimony from the drafting attorney, signing witnesses, and treating physicians, who can describe the person’s condition and the signing.
Testimony helps a court understand what happened at the signing. Medical notes help explain the person’s condition during that period.
Start preserving records now. Save emails, texts, calendars, and bank statements. A Florida Courts fraud memorandum notes why these cases can be difficult to win. Early preservation keeps more of the story intact.
Timing, procedure, and what a challenge involves
Florida sets firm deadlines. Some start when you receive a notice, not when you feel ready to act.
A will contest cannot start before the testator dies. Fla. Stat. § 732.518 provides that an action to contest the validity of all or part of a will, or the revocation of all or part of a will, may not be commenced before the death of the testator. After death, the notice of administration matters. Under Fla. Stat. § 733.212, an interested person served with the notice must object to the will’s validity within 3 months after service; that period can be extended only for estoppel based on the personal representative’s misstatement of the deadline. Objections missed by then are forever barred.
A trust contest has its own timing. A challenge to a revocable trust cannot start until the trust becomes irrevocable, by its terms or by the settlor’s death. See Fla. Stat. § 736.0207. Under Fla. Stat. § 736.0604, a contest to a trust that was revocable at death is barred unless started within the earlier of the chapter 95 period or six months after the trustee sends the required notice.
While a trust contest is pending, the trustee generally keeps administering the trust. Fla. Stat. § 736.08165 bars distributions that conflict with the rights of people affected by the outcome. Upon a party’s motion and after notice to interested persons, a court can allow an exception for good cause, with conditions such as a bond.
A challenge can involve the personal representative or trustee, other beneficiaries, and heirs. Your rights depend on your relationship to the estate or trust and the documents you received. Don’t assume the deadline is far away. Pull the document and every notice now.
Related questions readers often research next
Readers researching a contest often move on to the court process, costs, handwritten wills, and planning to reduce challenges. These pages cover those next questions:
- probate litigation overview for contests, disputes, and the court process
- cost of contesting a trust for cost considerations
- handwritten wills in Florida if the document is informal
- preventing a will contest for planning ahead
Frequently asked questions
Circumstantial facts, like timing and control over access, are commonly used.
Who has the burden of proof in a Florida will contest?
The person defending the will first shows it was properly signed. The contestant then must prove the grounds for the challenge.
Can a will be contested before the person dies?
No. A will contest cannot be started before the testator’s death.
How long do you have to contest a trust?
For a revocable trust that was revocable at death, the window closes at the earlier of the chapter 95 period or six months after the trustee sends the required notice.
Not sure what your next step is?
Talk it through with Trust Counsel, PL — the first consultation is free, confidential, and carries no obligation.

Talking through your situation with Trust Counsel, PL
If you suspect a parent, relative, or friend was pressured into changing a will or trust, you are likely in a stressful spot you did not choose. The facts may be incomplete, and the deadlines may be closer than they appear.
You don’t need every answer before you reach out. Call (305) 707-7126 or schedule online to talk through the documents, the notice you received, and the timeline. The firm offers a free, confidential initial consultation, without obligation to continue. The firm’s only office is in Coral Gables, Florida. Leslie V. Marenco is the responsible lawyer for this page.
Evidence Often Reviewed in Undue Influence Disputes
The Document Itself
Drafting history, prior versions of the will or trust, and any changes made shortly before signing.
Relationships
Who had a close personal or financial relationship with the person who made the document, and who was involved in its creation.
Timing and Circumstances
When the document was prepared, how quickly it changed, and what was happening in the person's life at the time.
Who Was Present
Who arranged the meetings, who transported the person, and who attended or was present during the signing.
Health and Capacity Records
Medical, care and cognitive records that help show the person's condition around the time of the document.
Protect the Evidence Early
Do not alter, discard or annotate original documents, and keep emails, texts, bank records and notes in their current form. Early preservation of records can matter in these disputes.
Questions to Bring to a Consultation
What documents do I have?
Bring the will, trust, amendments, beneficiary forms and any correspondence about how they were prepared or signed.
What changed, and when?
Note earlier versions of the estate plan and any dates that stand out, especially around illness or new relationships.
Who was involved?
List the people who helped arrange, draft, witness or benefit from the document.
What is my role?
Whether you are a beneficiary, heir or fiduciary, your position affects which questions matter most.