A client recently came into my Manhattan office with her late father’s will. Tucked inside was a handwritten note, dated and signed, stating he wanted to leave his car to a specific grandchild. The family’s question was simple: “Is this note legally binding?” The answer, unfortunately, was no. Life changes—a new grandchild, a falling out, the sale of a major asset—often inspire people to make a “quick fix” to their will. This impulse is understandable, but acting on it without proper legal formality can create the very conflict the will was meant to prevent.
A Codicil Is Not a Casual Update
A codicil is the formal legal term for an amendment to an existing will. It can add or remove a beneficiary, change the person you’ve named as executor, or alter a specific bequest. New York law treats a codicil with the same gravity as the will it modifies. It is not an addendum, a sticky note, or an informal letter of instruction. It is a testamentary document that must stand on its own and meet a strict set of legal requirements to be considered valid by the Surrogate’s Court.
When we draft a codicil, we are re-affirming the entire will, except for the specific changes being made. This is an act of deliberate stewardship. An improperly executed codicil doesn’t just fail on its own—it can call into question the testator’s original intentions, invite challenges from disgruntled heirs, and create expensive delays for the family waiting for the estate to be settled.
The Execution Ceremony: Witnesses Are the Key
Does this formal execution require a notary? The direct answer is no. Under New York Estates, Powers and Trusts Law (EPTL) § 3-2.1, a will or codicil’s validity hinges on specific actions, and a notary’s stamp is not among them. The statute requires that the document must be:
- In writing and signed at the end by the person making it (the testator).
- Signed in the presence of at least two attesting witnesses, or the testator must acknowledge their signature to each witness separately.
- Published—meaning the testator must declare to the witnesses that the instrument they are signing is their will or codicil.
- Signed by the two witnesses within a 30-day period.
The witnesses are the foundation of a valid will or codicil. Their role is to attest that they saw the testator sign the document and that the testator appeared to be of sound mind and acting of their own free will. This formal process, which we lawyers call the “will execution ceremony,” is what gives the document its power.
Why We Insist on a Notary: The Self-Proving Affidavit
If the law doesn’t require a notary, why does my firm—and any prudent estate planning practice—use one every single time? Because of a separate but related document called a self-proving affidavit.
This affidavit is a sworn statement that the witnesses sign in front of a notary public. In it, they attest under oath that the execution ceremony was performed correctly and in accordance with EPTL § 3-2.1. The notary’s role is to verify the identity of the witnesses and notarize their signatures on the affidavit.
The power of this affidavit becomes clear during probate—the court process of validating the will. Without a self-proving affidavit, the court may require the executor to locate the original witnesses, who could be years older, difficult to find, or even deceased. They would need to be brought into court or provide testimony about a signing ceremony they likely barely remember. This is a common and frustrating source of delay and expense.
With a self-proving affidavit, the will is presumed to be validly executed. It streamlines the probate process immensely, saving the estate time and money. It is the legal equivalent of an insurance policy against future complications—a small step during the signing that provides enormous benefit for your family later.
A codicil can be a useful instrument for a minor change. But it must be handled with the same discipline and foresight as your original estate plan. A simple mistake in its execution can invalidate your intended change and create a legacy of confusion, not clarity.
Before amending any part of your will, the most prudent step is a full review of the document and your current family circumstances. This review determines whether a simple codicil is sufficient or if your legacy is better served by drafting an entirely new will.



