What Florida Law Requires to Sign a Will

What Florida Law Requires to Sign a Will

Florida law asks one question when someone challenges a will on grounds of capacity. Did the person, at the moment of signing, have testamentary capacity? Testamentary capacity means understanding three things in a general way. The first is the nature and extent of your property. The second is who your natural heirs are. The third is the practical effect of signing the will.

General understanding is not perfect recall. A person does not need to recite account balances or list every grandchild’s birthday. The standard asks whether the person knew roughly what they owned, roughly who would inherit if there were no will, and roughly what signing this document would change.

The burden of proof follows two steps. First, the person offering the will for probate must prove that the will was properly signed and witnessed. A self-proving affidavit attached to the will satisfies that step. Second, if someone challenges capacity, the challenger must prove the testator lacked it. The challenger carries that burden from start to finish, even when the testator had a diagnosis of Alzheimer’s or another cognitive condition.

A will is valid or invalid based on one moment, not a span of years. A person who had capacity at signing and lost it the next day still signed a valid will. A person who lacked capacity at one signing but regained it for a later one may have a valid later will. The snapshot at signing is what matters.

Dementia Is a Diagnosis, Capacity Is a Moment

Dementia is a medical diagnosis describing a category of cognitive decline. Testamentary capacity is a legal conclusion about a single moment. The two are related but not the same.

A diagnosis of dementia, Alzheimer’s disease, or vascular dementia tells a doctor that certain cognitive abilities have declined over time. The diagnosis does not tell a court that the person could not understand property, heirs, and the effect of a will on a given Tuesday morning. Many people with early or moderate dementia have intervals when they think clearly. Florida courts call these lucid intervals, and a will signed during a lucid interval is valid.

The timing of the diagnosis matters less than the condition at signing. A diagnosis made the week after a signing does not prove the person lacked capacity when they signed. A diagnosis made years before does not prove the person lacked capacity on a later date. The question is always what the person understood at the moment the pen touched the paper.

Medical records are evidence, but they are not the only evidence. The people in the room at signing can describe what the testator said, how they answered questions, and whether they seemed aware of what they were doing. The attorney who supervised the signing may have notes from a capacity interview. A treating physician may have written a letter, dated near the signing, stating an opinion about the patient’s ability to understand property and heirs. All of these pieces add up.

A family that wants a will to stand should build the record before the signing. A family that wants to challenge a will must gather medical records and witness testimony after the fact. The side with the better evidence usually wins.

How Capacity Is Tested at the Signing Table

A lawyer who suspects diminished capacity should test it before the will is signed. The test is a conversation, not a form. The lawyer asks questions and writes down the answers.

The conversation covers the three elements Florida law requires. First, property. The lawyer asks what the person owns. The answer does not need to be perfect. Knowing “I own a house, a bank account, and a retirement account” is enough. Second, heirs. The lawyer asks who the person’s family members are. Knowing “I have two children and four grandchildren” is enough. Third, the will’s effect. The lawyer asks what the will does. Knowing “I am leaving everything to my daughter” or “I am splitting my estate between my two sons” is enough.

The lawyer also looks for warning signs. Does the person answer in their own words or repeat what a family member says? Does the person know the date, roughly where they are, and roughly why they came? Does the person understand that signing the will means the old will no longer controls?

A doctor’s letter helps. A treating physician who has seen the patient recently can write a brief letter stating that, in the doctor’s opinion, the patient has capacity to make a will. The letter should be dated within days of the signing, not weeks or months. The letter should mention the three elements if possible.

The signing itself should exclude interested parties. The children who will inherit should not be in the room when the will is signed. The witnesses should be people with no stake in the estate. A self-proving affidavit, where the testator declares the document to be the will and signs it willingly before the witnesses, means the witnesses need not be called to testify later if someone challenges the will.

Undue Influence: The Other Way a Late Will Fails

Capacity and undue influence are different grounds for setting aside a will. A person can have testamentary capacity and still have a will thrown out because someone pressured them into signing.

Undue influence under Florida law means overcoming the testator’s free will. The Third District Court of Appeal described it as “over persuasion, duress, force, coercion, or artful or fraudulent contrivances to such an extent that there is a destruction of free agency and willpower of the testator.” Mere advice or suggestion is not enough. The influence must be strong enough that the will reflects someone else’s wishes, not the testator’s own.

A weakened mind makes undue influence easier to prove. A person with dementia may still have legal capacity, but that same person may be more vulnerable to pressure. A caregiver who controls access to the testator, a family member who drives the testator to a lawyer’s office and sits in on every meeting, or a friend who isolates the testator from other family members can all raise red flags.

The case of Swiss v. Flanagan shows how the two grounds work together. A man signed a new will in 2013 that changed who would inherit. A contemporaneous affidavit called him a widower when he was divorced and mislabeled his eldest daughter as his youngest. The week after the will was signed, he was diagnosed with dementia, anxiety, and depression. A later fall and a brain scan showed a history of strokes. His medical records afterward were filled with observations about his impaired cognitive abilities. He signed nothing further before he died.

The trial court found that the 2013 will was the product of undue influence and admitted the earlier 2001 will instead. The appeals court affirmed. The diagnosis the week after signing was part of the story, but the decision rested on the evidence of pressure, not on the diagnosis alone.

A Will Signed the Week Before a Dementia Diagnosis

Timing is evidence, but timing alone does not answer the question. A will signed the week before a dementia diagnosis can be valid. A will signed the week after a dementia diagnosis can be valid. The question is always what the person understood at the moment of signing.

A diagnosis often follows months or years of decline. The doctor’s appointment where the diagnosis is made is the day the family gets a name for what they have been watching. The decline itself started earlier. Medical records from earlier visits, family testimony about the person’s behavior at home, and statements the person made around the signing date all matter.

A will signed shortly before a diagnosis is easier to challenge than a will signed years earlier. The closer the signing is to documented decline, the harder the proponent must work to prove capacity. But proximity to a diagnosis is not proof of incapacity. The proponent can still show that the testator had a lucid interval, that the attorney conducted a capacity interview, that a physician wrote a letter, and that the testator answered questions coherently.

A will signed after a diagnosis is not automatically invalid either. The diagnosis establishes that cognitive decline exists, but it does not establish that the person lacks capacity on every day going forward. If the testator had a good day, understood the property and heirs, and understood the effect of the will, the will can stand.

When a Guardianship Has Already Been Opened

A person who has been adjudicated incapacitated by a Florida court is in a different situation, but an adjudication of incapacity does not by itself bar the person from making a will. The statute’s list of rights a court may remove does not include making a will. The question is still whether the person met the testamentary capacity standard at the moment of signing.

A guardian cannot sign a will for the incapacitated person. A guardian cannot change the incapacitated person’s beneficiaries at will. In Rene v. Sykes-Kennedy, a guardian asked the guardianship court to amend the incapacitated woman’s revocable trust to put the guardian in as trustee. The court allowed the trustee swap but left the beneficiaries untouched. The appeals court affirmed and noted that changing beneficiaries was not before it.

The lesson is that a guardianship does not hand the estate plan to the guardian. The incapacitated person’s prior documents usually stand. The guardian may petition the court for changes, but the court will look closely at any request that shifts who inherits.

What to Do Now If a Parent Is Slipping

The time to act is before capacity is gone. A will signed while a parent still has lucid intervals, with proper documentation, is far easier to defend than a will signed at the last moment or no will at all.

Start with a conversation. Ask whether your parent has a will and whether it reflects what they want today. Ask whether they have a durable power of attorney naming someone to manage their finances if they cannot. Ask whether they have a health care surrogate designation and a living will. If any document is missing or outdated, now is the time to fix it.

Bring a lawyer into the picture early. A lawyer can conduct a capacity interview and write down the answers. A lawyer can structure the signing so that no interested family members are present. A lawyer can arrange for a self-proving affidavit and, if helpful, a doctor’s letter. These steps build the record that protects the will later.

Do not wait for a crisis. Once a parent is hospitalized, once a diagnosis is on paper, once a sibling starts making accusations, the options narrow. Acting while your parent is still on their feet and still having good days gives the family the strongest position.

If you are worried that someone else is pressuring your parent, document what you see. Note dates, statements, and who was present. Keep copies of any documents your parent signs. If necessary, consult an attorney about whether a challenge will be appropriate later.

What a Will or a Plan Costs, and Why Timing Decides the Price

A simple will at this firm is $299 flat fee. A Secure Will Estate Plan is $1,200 for one person or $1,950 for a couple. The plan includes five documents plus a lady bird deed on the home, with recording additional. A standalone durable power of attorney is $350.

Government costs are extra and passed through at cost. Recording fees for any deed depend on the number of pages.

A will contest, on either side, is quoted per matter. Litigation is more expensive than planning, often by a large multiple. The cost of building a record at signing, including a capacity interview and a doctor’s letter, is usually small. The cost of fighting over the will after death is usually large.

Timing decides the price in another sense. A plan put in place while your parent has clear capacity is straightforward. A plan put in place during a window of lucid intervals requires more care and may require a physician’s involvement. A plan attempted after capacity is gone may not be possible at all.

Frequently Asked Questions

Common Situations

A daughter brought her father, who had been diagnosed with early-stage Alzheimer’s disease, to sign a new will on a morning when he seemed clear. The father’s physician had written a letter the week before stating that, in her opinion, he understood his property and his family. The attorney asked questions, wrote down the answers, and kept the father’s children out of the room during the signing. A sibling later objected, but the will stood. The record showed the father had capacity at the moment of signing.

A nephew drove his aunt to a notary’s office to sign a new will naming the nephew as the sole beneficiary. The aunt had been diagnosed with dementia months earlier. She could not answer basic questions about her property or her other relatives. The nephew sat beside her during the signing. After her death, other family members challenged the will. The court found that the aunt’s confusion and the nephew’s presence at the signing showed undue influence, and the new will was set aside.

Sources of Law

• Who may make a will: Fla. Stat. §732.501
• Execution of wills: Fla. Stat. §732.502
• Fraud, duress, mistake and undue influence: Fla. Stat. §732.5165
• Burden of proof in contests; presumption of undue influence: Fla. Stat. §733.107
• Rights retained by a ward: Fla. Stat. §744.3215
• Amendment of a revocable trust; guardian: Fla. Stat. §736.0602 (annotated)
• Swiss v. Flanagan, No. 3D20-1500 (Fla. 3d DCA 2021), quoting Raimi v. Furlong, 702 So. 2d 1273 (Fla. 3d DCA 1997) (corpus: reference/caselaw/wills/swiss-v-flanagan-3d20-1500-raw.txt).
• Rene v. Sykes-Kennedy, 156 So. 3d 518 (Fla. 5th DCA 2015) (corpus: reference/caselaw/736/736-0602.md).

Related Guides

Will contests · Power of attorney for a parent with dementia · Guardianship vs power of attorney · Florida wills · Codicils

How I Sign a Will for a Client Whose Memory Is Going

In 14 years of law practice, I have seen families assume a dementia diagnosis ends the conversation when it does not. Florida law asks a narrower question. Did the person, at that moment, understand what they owned, who their heirs were, and what signing the will would do?

I have a few take-home points.

The first is that capacity and undue influence are different attacks, and a will can fail on either one. In Swiss v. Flanagan, a man signed a new will in 2013 that changed who would inherit. A contemporaneous affidavit called him a widower when he was divorced and mislabeled his eldest daughter as his youngest. The week after the will was signed he was diagnosed with dementia, anxiety, and depression. A later brain scan showed a history of strokes, and his medical records afterward were filled with observations about impaired cognitive abilities. He signed nothing further before he died. The trial court found the 2013 will was the product of undue influence and admitted the earlier 2001 will instead. The Florida Third District Court of Appeal affirmed. The Third District, quoting its own 1997 decision, described what undue influence requires as “over persuasion, duress, force, coercion, or artful or fraudulent contrivances to such an extent that there is a destruction of free agency and willpower of the testator.” The diagnosis the week after signing was part of the story, but the decision rested on the evidence of pressure.

The second is that the record made at the signing table is the record that defends the will. A capacity interview with written notes, a doctor’s letter dated within days, witnesses who have no stake in the estate, and the interested family members kept out of the room until the signing is done. These steps cost little and save a great deal.

Avoid waiting until a crisis forces the question. Once a parent is hospitalized or a sibling starts accusing, the window narrows.

One honest limit is that a will signed during a lucid interval can still be challenged, and the outcome depends on the evidence each side can gather after the testator is gone.

Kevin D. Klagge, Esq., admitted in Florida since 2012. General information rather than advice on your situation.

Updated on October 29, 2026. Reviewed by Kevin D. Klagge, Esq., Fla. Bar No. 99502. General information about Florida law, not legal advice, and no attorney-client relationship is created. Do not send confidential information until we have agreed to represent you.