A family in Manhattan gathers after the passing of their father, a successful architect. When the will is presented, there is a collective, stunned silence. His signature looks strained. Worse, the will disinherits his children of thirty years and leaves his entire multimillion-dollar estate to a home health aide hired only six months prior. The document was signed just weeks before his death, while he was heavily medicated.
This is not a scene from a movie. My firm has seen this situation play out in Surrogate’s Court time and again. The family’s immediate question is always the same: “Is this document even valid?” The answer isn’t found in what feels fair, but in what can be proven under New York law. A will is not just a piece of paper with wishes on it; it is a legal instrument that must withstand intense scrutiny, especially when challenged.
The Baseline: Requirements for a Valid Will
Before a court considers claims of influence or incapacity, it looks at the document itself. In New York, a will is presumed valid if it meets the strict formal requirements of the law. This is called “due execution.” The burden of proving a will was properly executed falls on the person offering it for probate—usually the named executor.
The specific rules are laid out in Estates, Powers and Trusts Law (EPTL) § 3-2.1. While the statute is dense, its core requirements are straightforward:
- It must be in writing. Oral wills are only permitted in very rare circumstances, such as for members of the armed forces in active conflict.
- It must be signed at the end by the testator—the person making the will. If they are unable to sign, another person can sign on their behalf, in their presence, and at their direction.
- The testator’s signature must be witnessed by at least two people. The testator must either sign in front of the witnesses or formally acknowledge to them that the signature on the document is theirs.
- The testator must “publish” the will. This is a legal term meaning they must declare to the witnesses that the document they are signing is, in fact, their will. No specific words are required, but the message must be clear.
- The witnesses must sign their names and addresses within 30 days of each other.
If these steps were not followed, the will can be invalidated on those grounds alone, regardless of the testator’s intent. This is why working with an attorney is so critical—we don’t just draft a document, we supervise a formal signing ceremony designed to meet every letter of the law.
Grounds for a Will Contest
When a will appears to be duly executed, the burden shifts to the person challenging it—the “objectant.” They must prove that, despite its proper form, the will is invalid for a substantive reason. The most common grounds for a will contest in New York are distinct, each requiring a different type of evidence.
Lack of Testamentary Capacity
This is an argument that the testator did not have the mental fitness required to make a will. The legal standard isn’t about general memory or even a diagnosis like dementia. The testator only needs to have understood three things at the moment they signed the will:
- The nature and extent of their property (what they owned).
- The natural objects of their bounty (who their close family members were).
- The disposition they were making of their property (who they were giving it to).
Proving a lack of capacity often requires a review of medical records and testimony from doctors and caregivers about the testator’s mental state at the time of the signing.
Undue Influence
This is one of the most frequent and difficult claims to prove. Undue influence is not just gentle persuasion. It is a form of coercion—often subtle and psychological—that subverts the testator’s free will and substitutes the will of another. In our opening example, the family would argue that the health aide used her position of trust and power over their ailing father to pressure him into changing his will for her benefit.
When a confidential relationship exists—like that between a caregiver and a patient—and that person receives a substantial benefit in the will, the court may infer undue influence. The burden can then shift back to the will’s proponent to prove that the gift was made freely and voluntarily.
Fraud or Forgery
Fraud is more direct. It can be “fraud in the execution,” where the testator is tricked into signing a will, believing it to be another document. Or it can be “fraud in the inducement,” where the testator is fed lies about a loved one to convince them to write that person out of the will. Forgery is simpler still: the signature on the will is not the testator’s. This is typically proven through the testimony of handwriting experts.
How the Surrogate’s Court Decides
A will contest is not a simple hearing. It is a full-blown litigation process within the Surrogate’s Court. The process begins with discovery, where both sides can demand documents, review medical records, and take depositions—sworn testimony outside of court—from witnesses, the drafting attorney, and the parties involved.
A key step under Surrogate’s Court Procedure Act § 1404 allows potential objectants to examine the attesting witnesses and the will’s drafting attorney before formally filing objections. This is a powerful tool for gathering information to assess the strength of a potential case.
Ultimately, if the parties cannot settle, the case will proceed to a trial. The court, and sometimes a jury, will hear all the evidence—from the attesting witnesses to medical experts—and render a decision. They will weigh the credibility of witnesses and the strength of the documents to determine if the will truly represents the final, independent wishes of the person who signed it.
The validity of a will is the foundation of an estate plan. When that foundation is cracked, the entire structure of a family’s legacy is at risk. It falls to the court to determine whether the document is a true testament or the product of something far less honorable.
If you are serving as an executor and facing a challenge to a will, or if you are a beneficiary who has grave concerns about the validity of a loved one’s final arrangements, the first step is a deliberate review of the facts. Our firm can conduct a preliminary analysis of the will and the circumstances of its creation to help you understand your position under New York law.




