Making A Will After A Dementia Diagnosis In Florida: What Capacity Really Means

A dementia diagnosis does not end your right to make a will in Florida, and the statute never mentions diagnosis at all. Florida Statute 732.501 says: “Any person who is of sound mind and who is either 18 or more years of age or an emancipated minor may make a will.” Sound mind, at the moment of signing. That’s the whole test.

I’ve evaluated capacity for Florida courts since 2014. Families come in convinced the diagnosis settled the question. It rarely does. What settles it is what the person could understand on the day they signed, and what record exists to show it.

What Mental Capacity Means After a Dementia Diagnosis

Mental capacity to make a will means understanding, in a general way, what you own, who would normally expect to inherit from you, and what signing the document does. Florida measures that at the moment of signing. A dementia diagnosis is a clinical finding. Capacity is a legal one, judged on function rather than on a label.

The courts set that bar deliberately low. In In re Wilmott’s Estate, 66 So. 2d 465 (Fla. 1953), the Florida Supreme Court described it as the ability to “mentally understand in a general way the nature and extent of the property to be disposed of, and the testator’s relation to those who would naturally claim a substantial benefit from the will, as well as a general understanding of the practical effect of the will as executed.” The same opinion held that “a sick person may make a valid will in his last illness or even when in a dying condition.”

General understanding. Not sharp recall, not the ability to name account balances, not a perfect memory of last Tuesday. Our clinical psychological evaluations start from that same distinction between a diagnosis and a function.

Does the Stage of Dementia Change the Answer?

Yes, more than the diagnosis does. Dementia is progressive, and the abilities the law asks about drop out at different points along that curve.

The National Institute on Aging describes mild-stage Alzheimer’s as including “poor judgment, leading to bad decisions” and “trouble handling money and paying bills.” At the moderate stage it adds “difficulty organizing thoughts and thinking logically” and difficulty with familiar multistep tasks. At the severe stage, people “are completely dependent on others for their care.”

Read those against the legal test. Trouble paying bills does not mean someone cannot say what they own and who their children are. Losing the ability to think through a multistep task starts to bite. Complete dependence generally ends it. Early-stage disease often leaves testamentary capacity intact, late-stage disease usually does not, and the moderate middle is where the arguments happen. That middle is where attorneys call me, and it’s the same window where early dementia evaluations do the most good.

The Clock Started Running Before the Diagnosis Did

The most useful finding in this area has nothing to do with wills. Researchers at Johns Hopkins, publishing in JAMA Internal Medicine in November 2020 and reported by the NIH, tracked more than 80,000 Medicare beneficiaries over 65 who lived alone, roughly 27,000 of whom were diagnosed with dementia between 1999 and 2018.

People who went on to develop dementia showed higher rates of payment delinquency beginning six years before diagnosis. Their credit scores fell into subprime range starting two and a half years before diagnosis. In areas with lower education levels, the delinquency signal appeared almost seven years out.

That changes what “act early” means. The standard advice tells families to move quickly after a diagnosis. This data says the decline in financial decision-making was already years old by the time the diagnosis arrived. Diagnosis day is not the start of the clock. It’s the day someone finally looked at it.

Signing Day Is What Gets Judged

Florida assesses capacity at the moment the pen touches the paper. Evidence from six months before or after is context, not proof.

This is why lucid intervals matter. In American Red Cross v. Estate of Haynsworth, 708 So. 2d 602 (Fla. 3d DCA 1998), the Third District defined a lucid moment as “a period of time during which the testator returned to a state of comprehension and possessed actual testamentary capacity.” A will signed during one is valid, even if the person was confused the week before and confused again after. Anyone who has sat with a family through moderate dementia knows those windows are real, and how fast they close.

Here’s the uncomfortable part. In the file, a well-documented signing on a good day and an undocumented signing on a bad day look almost identical. The difference is made on the day, not reconstructed later.

Three Florida Rules That Catch Families off Guard

Florida handles three things differently from what most families expect, and each one shows up in the weeks right after a diagnosis.

A handwritten will is worth nothing here. Florida Statute 732.502 requires that a will be signed or acknowledged “in the presence of at least two attesting witnesses.” Handwritten and oral wills are also carved out of the rule that otherwise honors wills made in other states, so one that would have been valid where it was written is still void in Florida. Those pages of instructions found in a drawer after a death, which turn up constantly in dementia cases, do not make a will.

You also can no longer set up a power of attorney that kicks in later. Section 709.2108 of the Florida Statutes says a power of attorney “is exercisable when executed,” and for any instrument signed on or after 1 October 2011, a power that takes effect “at a future date or upon the occurrence of a future event or contingency” is ineffective. Florida abolished the springing power. So the plan families arrive with, meaning we’ll sign one now that activates when Mom declines, is not available. Sign one that works today, or expect a guardianship petition later.

And your out-of-state child may not be able to serve. Florida calls the executor a personal representative, and section 733.304 lets a nonresident serve only if they are related to the decedent by blood, adoption, or marriage. A close family friend in Ohio cannot serve. A niece can. For Florida retirees whose adult children live elsewhere, this is worth checking before the will is drafted rather than after.

Why a Doctor’s Competency Letter Is the Weakest Paper in the File

Almost every article on this topic tells families to get a letter from the doctor. I’d rather families understood what that letter can carry, because in a contested Florida probate case it is usually the thinnest document in the box.

Three reasons. Most such letters state a conclusion with no functional findings behind it, which gives a judge nothing to weigh. The treating physician is answering a clinical question, meaning how to care for this patient, while a capacity opinion answers a legal one, meaning whether this person met a specific standard at a specific moment. And the American Bar Association and American Psychological Association capacity handbook for psychologists frames capacity as functional and task-specific, so a statement that a patient is “competent” in general says little about the will in particular.

The letter isn’t worthless. Contemporaneous medical documentation carries real weight. It just shouldn’t be the only thing standing between a will and a challenge, especially when a neuropsychological evaluation can measure the specific abilities the statute asks about.

What a Capacity Evaluation Looks Like After a Dementia Diagnosis

A forensic capacity evaluation is built to answer the legal standard directly, and at our practice it runs about 10 hours of professional time. The components are the same ones we use across our forensic psychological evaluations: a clinical interview, a mental status exam, collateral interviews, a record review, psychological testing, scoring and interpretation of that testing, and report writing.

Each piece does a job. The interview probes the exact elements a Florida court asks about. The mental status exam captures orientation, attention, memory, and thought process that day. Collateral interviews reach the people who see the person daily, because families notice changes months before a chart does. The record review pulls history, medications, and prior functioning. Testing puts numbers on cognition instead of adjectives.

Two scheduling facts to plan around. We’re typically booked out about three weeks, so a capacity question raised the week before a signing is a problem. And our doctors conduct evaluations on site across Florida, in homes, care facilities, and courthouses, which matters when someone can’t travel.

Should You Make a Will After a Dementia Diagnosis?

That’s your decision, and nobody else’s. No family member, attorney, or doctor should pressure someone into signing a will, and pressure applied to a person with cognitive impairment is exactly what gets a will thrown out later.

Two things are worth weighing. Without a will, Florida Statute 732.102 decides who inherits, and the result surprises people. A surviving spouse takes the entire estate only when every one of the deceased’s descendants is also the spouse’s, and the spouse has no other descendants. In any blended family, meaning a child from a prior marriage on either side, the spouse takes one half and the descendants take the rest. Unmarried partners and unadopted stepchildren get nothing. And capacity generally narrows over time, so the window for a clean signing is wider today than it will be next year.

Cognitive impairment also raises vulnerability to undue influence, which is a separate legal ground from incapacity and is proven on different evidence. If one family member is driving the process, keep them out of the room, out of the attorney selection, and out of the drafting. The line between clinical and forensic work matters here too, because a neutral retained evaluator answers a question a treating relationship makes harder to answer.

Does a Guardianship End the Right to Make a Will?

Not automatically. Section 744.3215 of the Florida Statutes lists the rights a court can remove from a person found incapacitated and delegate to a guardian. Subsection (3) includes the right “to contract.” The right to make a will is not on that list.

An adjudication of incapacity is powerful evidence in a later will contest. It isn’t the end of the analysis, and anyone treating a guardianship order as an automatic answer is reading a conclusion the statute doesn’t state.

What to Do in the First Weeks After a Dementia Diagnosis in 2026

Move now, and treat the will and the capacity record as one job rather than two.

For families: book a Florida estate planning attorney within weeks. Handle the will, the power of attorney, the living will under chapter 765, and the health care surrogate designation in one sitting while capacity is clear, since all four need the same thing and Florida no longer lets a power of attorney wait in the wings. Ask that the signing be documented carefully, including who was present and who was not. If any relative is likely to object later, get a formal capacity evaluation dated the same day as the signing rather than reconstructing one after a death.

For attorneys: raise capacity at the first meeting, not after the contest is filed. Build our roughly three-week scheduling window into your timeline, along with how long evaluations take once they start.

Around 579,900 Floridians age 65 and older were living with Alzheimer’s according to the Alzheimer’s Association’s most recent state figure, which the association labels a 2020 estimate. A large share of those families will face a document that needs signing. Our four doctors have testified in Florida’s 1st, 2nd, 15th, 17th, 19th, and 20th circuits, retained by both sides, and we answer a will and dementia diagnosis question the same way every time: against the legal standard, on the record that exists, at the moment that counts. Our practice takes referrals from attorneys and families across the state, and you can reach either office to request a retainer agreement.

FAQs

Can you make a will after being diagnosed with dementia?

Often, yes. Florida Statute 732.501 requires only that a person be of sound mind when the will is signed, and it never mentions a diagnosis. Courts ask whether the person generally understood what they owned, who would naturally inherit, and what the document did. Early-stage dementia frequently leaves that ability intact.

Does the stage of dementia affect whether a will is valid?

More than the diagnosis does. The National Institute on Aging describes mild-stage symptoms including trouble handling money and poor judgment, moderate-stage difficulty thinking logically and completing multistep tasks, and severe-stage complete dependence on others. Early-stage disease often preserves the abilities the law asks about. Severe-stage disease usually does not.

How soon after a dementia diagnosis should someone make a will?

As soon as they reasonably can. A study of more than 80,000 Medicare beneficiaries published in JAMA Internal Medicine in 2020 found that people who later developed dementia showed higher payment delinquency starting six years before diagnosis, with credit scores falling into subprime range about two and a half years out. Decision-making decline typically predates the diagnosis, so the window is narrower than families assume.

Is a letter from the doctor enough to prove capacity to make a will?

Rarely on its own. Most competency letters state a conclusion without the functional findings a court can weigh, and a treating physician is answering a clinical question rather than a legal standard. The ABA and APA capacity handbook treats capacity as functional and task-specific, so a general statement that a patient is competent says little about the will itself.

What if my relative signs a will on a good day and is confused the next?

That can still produce a valid will. In American Red Cross v. Estate of Haynsworth, 708 So. 2d 602 (Fla. 3d DCA 1998), the court defined a lucid moment as a period when the testator returned to a state of comprehension and possessed actual testamentary capacity. Florida judges capacity at the moment of signing, so a documented signing during a lucid interval holds up.

Is a handwritten will valid in Florida after a dementia diagnosis?

No, and this is where Florida is stricter than most people expect. Florida Statute 732.502 requires a will to be signed or acknowledged in the presence of at least two attesting witnesses. Handwritten and oral wills are also excluded from the rule that otherwise honors wills executed in other states, so one that was valid where it was written is still void in Florida.

Does a guardianship stop someone from making a will in Florida?

Not automatically. Florida Statute 744.3215 lists rights a court can remove from an incapacitated person and delegate to a guardian, including the right to contract. The right to make a will is not on that list, so an adjudication of incapacity is strong evidence in a will contest rather than an automatic answer.