Probate can become complicated when questions arise about whether a decedent had the mental or physical ability to make valid estate planning decisions. A lack of capacity may affect wills, trusts, powers of attorney, and other critical documents, and it can have serious consequences for heirs and beneficiaries.
At Buckman, Buckman & Castellano, P.A., our experienced Sarasota probate attorneys help clients both challenge and defend claims related to lack of capacity. We provide clear guidance, investigate circumstances thoroughly, and advocate for fair outcomes that reflect the true intentions of the decedent.
What Is Lack of Capacity?
Lack of capacity occurs when a person does not have the mental ability to make informed decisions about their estate.
Courts require that individuals demonstrate:
- Understanding of assets – The decedent must know the nature and extent of their property.
- Knowledge of beneficiaries – They must recognize the people who would naturally inherit.
- Understanding of the disposition – They must comprehend how their estate is being distributed.
- Rational decision-making – Decisions must make sense in context, without being the result of confusion, delusions, or mental illness.
Capacity can fluctuate over time, and someone may have been competent at one point but later experienced cognitive decline affecting subsequent decisions.
Why Lack of Capacity Matters in Probate
Estate documents executed by someone lacking capacity may be challenged or invalidated, which can result in:
- Assets distributed differently than intended by the decedent
- Family disputes and strained relationships
- Delays in probate and trust administration
- Increased legal costs and court involvement
Addressing capacity concerns protects the decedent’s true wishes and helps preserve family relationships.

Common Signs of Lack of Capacity
Signs that a decedent may have lacked capacity include:
- Memory loss, confusion, or disorientation
- Inability to understand asset ownership or debts
- Decisions that contradict long-standing intentions
- Confusion about family members or relationships
- Sudden or unusual changes to estate planning documents
Medical records, witness testimony, and communication with advisors often help establish whether the decedent had sufficient capacity at the time of executing estate documents.
Common Probate Scenarios Involving Lack of Capacity
Some frequent situations where capacity is questioned include:
- Elderly or infirm individuals – Cognitive decline or dementia may affect decision-making.
- Recent illness or injury – Hospitalizations or medical conditions can temporarily impair capacity.
- Pressure or influence by others – While separate from undue influence, a decedent’s mental state may make them more vulnerable to manipulation.
- Complex estate arrangements – Multiple assets, investments, or business interests may require higher levels of understanding.
Recognizing lack of capacity early can prevent disputes and protect rightful heirs from costly litigation.
Legal Standards for Capacity in Florida
Florida courts evaluate capacity based on the following factors:
- Understanding property – Does the decedent know what they own?
- Recognizing heirs – Can they identify natural beneficiaries?
- Awareness of disposition – Do they comprehend how assets are being allocated?
- Rational reasoning – Can they make decisions consistent with prior intentions and sound judgment?
The burden of proof often rests on the party challenging the document. Courts consider medical evidence, witness statements, and the decedent’s behavior and communication during document execution.
How Courts Evaluate Capacity Claims
Courts look at capacity in context, examining:
- Medical records – Diagnoses, medications, or cognitive testing results
- Witness testimony – Family, friends, and professionals present at signing
- Behavioral evidence – Erratic or unusual decisions, incoherence, or confusion
- Document execution – Whether a lawyer explained the documents and confirmed understanding
Capacity is decision-specific, meaning a person may be capable of some decisions but not others. Courts carefully assess the particular estate documents at issue.
Challenging Lack of Capacity in Probate
If a lack of capacity is suspected, Buckman, Buckman & Castellano, P.A. takes a thorough approach:
- Investigate circumstances – Review medical history, estate documents, and communications
- Gather evidence – Collect testimony from family, caregivers, and experts
- File probate challenges – Petition the court to invalidate documents executed without capacity
- Negotiate settlements – Resolve disputes before trial when possible
- Litigate in court – Represent clients through hearings and trial if necessary
Our goal is to ensure the decedent’s true intentions are followed, and rightful beneficiaries are protected.
Defending Against Lack of Capacity Claims
Fiduciaries, trustees, or heirs may be wrongly accused of participating in a decision without capacity.
Buckman, Buckman & Castellano, P.A. assists clients in:
- Reviewing evidence – Examine medical records and legal documentation
- Demonstrating capacity – Show that the decedent understood and voluntarily executed documents
- Protecting client interests – Represent parties fairly in probate court
The burden of proof often rests on the party challenging the document. Courts consider medical evidence, witness statements, and the decedent’s behavior during execution
How Courts Evaluate Capacity Claims
Experts are often key in probate disputes involving capacity:
- Medical professionals – Evaluate cognitive ability or mental illness
- Psychologists or psychiatrists – Assess memory, reasoning, and understanding
- Estate planning attorneys – Confirm proper execution and informed consent
Capacity is decision-specific, meaning a person may be capable of some decisions but not others. Courts carefully assess each estate document individually.
Additionally, courts consider patterns of behavior over time, looking for sudden deviations from prior intentions or decisions that seem inconsistent with the decedent’s usual reasoning.
This helps determine whether the person truly understood the implications of their estate planning choices.
Preventing Capacity Challenges
Preventive steps can reduce the risk of disputes:
- Use independent counsel when drafting documents
- Include witnesses or notarization to confirm understanding
- Clearly document discussions and intentions
- Monitor cognitive health in older adults or those with medical conditions
Proactive measures protect decedents’ wishes, reduce family conflicts, and minimize the risk of legal challenges.
Sarasota-Specific Probate Considerations
Sarasota probate cases often involve:
- Retiree populations with potential cognitive decline
- Vacation homes and diverse investment assets
- Blended families or beneficiaries living out of state
- Seasonal caregivers who may have temporary access to the decedent
Local knowledge of probate procedures, judges, and court expectations helps resolve disputes efficiently.

Why Hire Buckman, Buckman & Castellano, P.A.
Working with our Sarasota probate attorneys ensures:
- Thorough investigation of medical records, communications, and witnesses
- Experienced advocacy in probate challenges or defenses
- Strategic planning to reduce conflict and litigation costs
- Protection of fiduciaries and heirs from unwarranted claims
We combine legal expertise with a compassionate, practical approach to help families handle these sensitive matters.
Frequently Asked Questions (FAQs)
What is lack of capacity in probate?
Lack of capacity occurs when a person cannot understand their assets, beneficiaries, or the implications of estate planning documents.
How is capacity determined in Florida?
Courts review medical records, witness statements, and the circumstances of document execution. Decision-specific assessments are common.
Can I challenge a will or trust after someone passes?
Yes. Beneficiaries or heirs can file a probate challenge if they believe a decedent lacked capacity. Timing under Florida law is important.
Who can raise a lack of capacity claim?
Any interested party, including heirs, beneficiaries, or fiduciaries, can challenge a document on this basis.
What evidence is used to prove a lack of capacity?
Medical records, witness testimony, expert evaluations, and document execution evidence are often crucial.
Can a decedent have capacity for some decisions but not others?
Yes. Courts recognize that capacity can vary by type of decision and complexity of the matter.
How long does a lack of capacity case take?
Duration depends on complexity, evidence, and whether the case resolves through negotiation or trial.
Can preventive steps reduce the risk of disputes?
Yes. Independent legal counsel, witnesses, notarization, and clear documentation reduce the likelihood of challenges.
Can a trustee or executor be removed for participating in a decision without capacity?
Yes. Courts may remove fiduciaries who improperly benefit from documents executed without proper capacity.
Speak With a Sarasota Probate Lawyer About Lack of Capacity
If you suspect a decedent lacked capacity when creating or modifying a will, trust, or other estate planning documents, the probate attorneys at Buckman, Buckman & Castellano, P.A. can investigate, advise, and advocate for your rights. Whether challenging or defending a capacity claim, we combine local knowledge with experience to protect estates and beneficiaries.
Contact Buckman, Buckman & Castellano, P.A. today for a consultation. Let us help safeguard the decedent’s intentions, resolve disputes efficiently, and guide you through probate with confidence.
Contact us for a free consultation
We work with clients in Sarasota, Venice, Bradenton, North Port, Tampa, Orlando, Jacksonville and throughout Florida. Get in touch with us today and tell us what happened to you. We will review your case for free and with no further obligation from you.
Buckman, Buckman & Castellano, P.A.