To contest a will in New York, an interested person generally needs more than disappointment about an inheritance. A valid will contest usually depends on a recognized legal issue involving how the will was created, signed or influenced. Common grounds include lack of testamentary capacity, undue influence, improper execution, fraud and questions about whether the document is actually the decedent’s valid final will.
Disputes over wills can become especially difficult because they often combine legal questions with longstanding family relationships. A child may believe a parent was pressured into changing an estate plan. A beneficiary may question a major change made shortly before death. Another family member may discover that an earlier estate plan divided property very differently.
New York courts continue to examine these issues carefully. Decisions issued during 2026 demonstrate that testamentary capacity, due execution and undue influence remain central issues in contested probate proceedings. Recent appellate decisions such as Matter of Bolsinger and Matter of Estate of Mielty also show that capacity and undue influence must be evaluated separately because a person may have legal capacity while still being subjected to improper influence.
Understanding the legal reasons to contest a will can help families determine whether there is a genuine probate issue or simply a disagreement with the decedent’s decisions.
What does it mean to contest a will?
A will contest is a legal challenge to whether a purported will should be admitted to probate.
Probate is the court process used to establish that a will is legally valid and to authorize administration of the estate according to its terms. In New York, probate proceedings are generally handled by the Surrogate’s Court.
A person cannot necessarily challenge a will simply because they knew the deceased person or disagree with the distribution. Under New York’s Surrogate’s Court Procedure Act, an individual whose interest in the estate would be adversely affected by admitting the will to probate may generally file objections.
This distinction matters because a beneficiary dispute is not automatically a valid will contest.
For example, suppose a parent leaves most property to one child and a smaller share to another. The unequal distribution may cause anger or suspicion. However, unequal treatment by itself does not prove that the will is invalid.
The person challenging the will must usually identify a recognized legal basis for the objection.
The most common reasons for contesting a will
Different cases involve different facts. However, several legal issues appear repeatedly in New York estate litigation.
| Ground for contest | Central legal question | Typical concern |
|---|---|---|
| Lack of testamentary capacity | Did the person understand what they were doing when the will was signed? | Serious cognitive impairment or confusion |
| Undue influence | Did another person improperly influence the estate plan? | Dependency, pressure or beneficiary involvement |
| Improper execution | Was the will signed and witnessed as New York law requires? | Problems with signatures, witnesses or the execution ceremony |
| Fraud | Was the person deceived about the document or important facts? | False representations that affected the will |
| Forgery or alteration | Is the document or signature genuine? | Suspicious signatures or document changes |
| Revocation or another will | Was this actually the person’s final valid estate plan? | Later wills or evidence of revocation |
Lack of testamentary capacity
One of the most common reasons someone may contest a will is an allegation of lack of capacity.
Testamentary capacity has a specific legal meaning. The question is not simply whether the person was elderly, physically ill or experiencing some memory problems.
New York courts generally consider whether the person understood the nature and consequences of making a will, knew the general nature of the property being distributed and understood the people who would ordinarily be considered natural beneficiaries.
A person may therefore have medical or cognitive limitations while still possessing sufficient testamentary capacity.
This distinction appeared again in Matter of Bolsinger, a New York appellate decision issued in 2026. The court determined that factual questions remained concerning testamentary capacity where the decedent was seriously ill and receiving hospice care near the time the will was executed.
The decision illustrates why capacity disputes depend heavily on the person’s condition at the time the will was signed, rather than solely on a diagnosis or general health history.
Undue influence
Undue influence occurs when pressure or influence overcomes the testator’s independent wishes and causes an estate plan to reflect another person’s desires instead.
Influence alone is not necessarily improper.
Family members often discuss estate planning. An adult child may drive a parent to an attorney’s office. A caregiver may assist with appointments or paperwork. These facts alone do not establish undue influence.
Concern becomes greater when circumstances suggest that a beneficiary exercised significant control over a vulnerable person.
Relevant circumstances may include:
- Dependence on a beneficiary for daily care
- Isolation from other family members
- A dramatic change from earlier estate plans
- A beneficiary participating heavily in preparation of the will
- A beneficiary controlling access to the testator
- A sudden transfer of substantial benefits to one individual
New York appellate decisions in 2026 continue to reinforce that undue influence is a separate issue from capacity. In Matter of Estate of Mielty, the court emphasized that a person may possess testamentary capacity while a separate question remains about whether someone improperly influenced their decisions.
Improper execution
A will can also be challenged when it was not executed according to New York law.
New York Estates, Powers and Trusts Law sets formal requirements for executing a traditional written will. These requirements concern matters such as the testator’s signature, acknowledgment of the signature, declaration that the document is a will and attestation by witnesses.
The purpose of these formalities is not merely administrative. They help establish that the document genuinely represents the person’s testamentary intentions.
A will prepared without professional guidance can create particular problems when required steps are overlooked.
However, a technical concern does not automatically invalidate every will. The particular facts surrounding execution must be examined carefully.
Fraud or misrepresentation
Fraud can provide another basis to contest a will.
Fraud may arise when someone intentionally provides false information that causes the testator to change their estate plan.
Consider a situation in which one family member falsely tells an elderly parent that another child stole money from them. If the parent relies on that false information and changes the will to disinherit that child, questions about fraud may arise.
Fraud may also concern the nature of the document itself. A person could potentially be misled into signing something that they do not understand is a will.
These cases are highly fact dependent and generally require evidence connecting the deception with the resulting testamentary decision.
Forgery or alteration
A will may also be challenged if there is reason to believe that the document was forged or materially altered.
Potential concerns include an unfamiliar signature, pages that appear inconsistent, unusual changes or questions regarding when particular provisions were added.
Forgery allegations should not be made based on suspicion alone. Document history, testimony and other evidence may be needed to determine whether the document is authentic.
Revocation or another valid will
Sometimes the central issue is not misconduct at all.
The dispute may concern which document represents the decedent’s final valid will.
A family might discover an older will in one location and a more recent document elsewhere. There may also be evidence that the decedent intentionally revoked a prior will.
Determining which document controls may require careful review of execution dates, revocation language and the circumstances surrounding each document.
How undue influence can lead to a will contest?
Undue influence is particularly complicated because direct evidence is often limited.
Pressure may occur privately. The testator may have died before questions about the estate plan emerge. Family members may have very different interpretations of the same relationships.
Courts therefore examine the surrounding circumstances.
A useful example is a parent who historically divided an estate equally among several children. Later in life the parent becomes heavily dependent on one child. That child controls appointments, manages communications and becomes deeply involved in the parent’s financial affairs.
The parent then signs a new will leaving nearly everything to that child.
The change itself does not establish undue influence. Parents are legally free to change their estate plans. However, the combination of dependency, control and beneficiary involvement may justify closer examination.
In Matter of Bolsinger, decided in 2026, New York’s Appellate Division found factual issues concerning undue influence where evidence showed that a family member had knowledge of the decedent’s finances, prepared the will without an attorney and played a significant role while the decedent was dependent on her.
The case highlights why courts examine the entire relationship rather than one isolated fact.
What beneficiary disputes do and do not justify a will contest?
A beneficiary dispute often begins with the belief that an estate plan is unfair.
Unfairness alone usually does not invalidate a will.
A competent person generally has considerable freedom to decide who receives property after death. That includes making unequal gifts or changing beneficiaries.
For example, a parent might leave one child a larger share because that child provided extensive care. Another person may leave assets to a friend, charity or caregiver rather than relatives.
Those decisions may surprise family members without being legally invalid.
The situation becomes different when evidence suggests:
- The testator lacked testamentary capacity
- Someone exercised undue influence
- Required execution procedures were not followed
- Fraud affected the estate plan
- The signature or document may not be genuine
- Another valid will exists
The distinction between an unexpected will and an invalid will is essential before starting estate litigation.
Understanding your options before challenging a will
A decision to contest a will should be based on more than an unexpected inheritance or difficult family relationship.
New York probate law focuses on whether the will represents the genuine and legally valid intentions of the person who created it. Lack of testamentary capacity, undue influence, improper execution, fraud, forgery and questions concerning revocation or competing wills can all create legitimate issues for review.
Recent New York appellate decisions in 2026 continue to demonstrate that these disputes are highly fact specific. Capacity and undue influence must be evaluated independently. The circumstances surrounding execution can also matter greatly when deciding whether probate objections should proceed.
Anyone concerned about a potentially invalid will should preserve estate planning documents, relevant communications and other information surrounding the creation of the disputed document.
Timins Law Group, PLLC assists individuals and families in New York City and Westchester County with probate, estate litigation, wills, trusts and related estate matters. Understanding the legal basis for a potential will contest can help beneficiaries and families decide what steps may be appropriate while protecting their rights during the probate process.
Contact us to discuss concerns about a will, beneficiary dispute or other estate litigation matter and learn which legal options may apply to your circumstances.
Frequently asked questions
Who can contest a will in New York?
New York law generally allows a person whose interest in the estate would be adversely affected by admitting the will to probate to file objections. Whether someone has standing depends on their relationship to the estate and how probate would affect their interests.
Can a child contest a parent’s will?
A child may be able to contest a will when they have standing and legitimate legal grounds. Being disappointed with the amount inherited is not enough by itself.
Can I contest a will because it seems unfair?
Usually, unfairness alone is insufficient. A person generally has the right to distribute property unequally as long as the will is legally valid and reflects their independent intentions.
What is the difference between undue influence and lack of capacity?
Lack of capacity focuses on whether the testator understood the relevant estate planning decision. Undue influence focuses on whether another person improperly overcame the testator’s independent wishes. A person may have capacity while still being subjected to undue influence.
Can someone with dementia make a valid will?
Potentially, yes. A diagnosis does not automatically establish lack of testamentary capacity. The important question is whether the person had the necessary understanding when the will was executed.
Can a will be challenged if it was not properly witnessed?
Improper execution can be a basis for objections to probate. Whether a particular problem makes the will invalid depends on the applicable New York execution requirements and the facts surrounding the signing.
What happens if two wills are discovered?
The estate may need to determine which document represents the decedent’s most recent valid will. Execution, revocation and authenticity may all become relevant.
Can a beneficiary who helped arrange the will inherit?
Helping arrange an appointment does not automatically invalidate a gift. However, extensive beneficiary involvement combined with dependency or other suspicious circumstances may become relevant in an undue influence analysis.
What happens after someone objects to probate?
The Surrogate’s Court may examine evidence concerning the challenged will. Depending on the issues, estate litigation can involve witness examinations, document discovery, motions and potentially a hearing or trial.
Should I speak with an estate litigation attorney before contesting a will?
Legal review can help determine whether concerns about a will amount to recognized legal grounds for an objection. It can also help identify relevant evidence and distinguish family disagreement from issues that may affect the validity of the will.
