A client recently came into my office with his mother’s will, a document drafted in the early 2000s. Stapled to the back was a separate, shorter document signed a decade later. It was a codicil—an addendum—that attempted to change who would receive a valuable piece of real estate in Brooklyn. While the family believed this was a simple, cost-effective update, that staple created a point of weakness. It invited questions about her state of mind when she made the change, and it created ambiguity that could easily fuel a dispute in Surrogate’s Court.
Life is not static. Families grow, assets are acquired or sold, and relationships change. The will you signed five or ten years ago may no longer reflect your current intentions. The question is not whether to update your will, but how. While a codicil seems like a straightforward “addition to a will,” in my practice, I have seen it become the very thing that undermines a person’s final wishes.
The Formalities of a Codicil
A codicil is a legal document that modifies, amends, or revokes specific provisions of a previously executed will. It does not replace the entire will; it merely alters it. To be legally valid in New York, a codicil is held to the same high standard as the will itself—a critical point many people miss.
Under New York’s Estates, Powers and Trusts Law (EPTL) § 3-2.1, a will—and therefore a codicil—must be executed with specific formalities. It must be in writing, signed at the end by the testator, and this signature must be affixed in the presence of at least two attesting witnesses. Those witnesses must also sign their names within a 30-day period. A handwritten note in the margin or an unsigned memo will not suffice. It must be a formally executed legal instrument.
For a very minor, uncontroversial change—like changing an executor from one sibling to another when both are in agreement—a codicil might seem efficient. However, the perceived convenience often carries hidden risks.
The Dangers of a Piecemeal Approach
The primary function of a will is to provide clarity when you are no longer here to speak for yourself. A codicil, by its nature, can introduce ambiguity. It creates two documents—the original will and the amendment—that must be read and interpreted together. This can lead to several problems I’ve seen play out in contentious estate administrations.
Creating Confusion and Conflict
What if the language in the codicil inadvertently conflicts with a provision in the original will? For example, the will might leave the residuary estate to your two children equally. A later codicil might gift a specific stock portfolio to one of those children. Does that portfolio now come out of the residuary estate before it’s split, effectively giving that child a larger share? Or was it intended to be their share of the inheritance? The document’s silence on this point becomes a battleground for litigation between heirs.
Risk of Loss or Separation
A will and its codicil are separate physical documents. They can be separated or lost. If the codicil is lost and cannot be found after your passing, the court will likely admit the original will to probate as if the codicil never existed. Your intended changes vanish. A single, consolidated document is simply a more secure instrument for transferring generational assets.
Inviting a Will Contest
A codicil can also act as a spotlight, drawing attention to a specific change and making it a target for a will contest. If a codicil dramatically alters an estate plan—for example, disinheriting a child or leaving a large bequest to a new caregiver—it can raise suspicions of undue influence or lack of testamentary capacity. Challengers will argue that the testator was of sound mind when they wrote the will but was vulnerable when they signed the isolated codicil. Proving otherwise falls to the estate, leading to a long and costly process for the family.
Stewardship Demands a Clean Slate
When a client comes to us with a life change that requires updating their estate plan—a marriage, a divorce, the birth of a grandchild, or a significant change in financial standing—we almost always recommend executing a new will. This isn’t about generating more work; it’s about fiduciary duty and prudent planning.
A new will accomplishes several crucial goals. First, it explicitly revokes all prior wills and codicils. This creates a single, authoritative document that eliminates any confusion about which instrument governs your estate. Second, it reaffirms your entire estate plan in its current form, providing a fresh, contemporaneous snapshot of your wishes. This makes it far more difficult for someone to challenge the plan by arguing you weren’t of sound mind. You are not just changing one provision; you are ratifying the entire structure.
Stewardship. That is what estate planning is about. You are the custodian of your family’s legacy. A clear, unambiguous, and consolidated will is one of the most important acts of stewardship you can perform. It minimizes the burden on your executor and, most importantly, protects your family from the stress and expense of needless litigation.
If your will is more than a few years old or if you’ve experienced a significant life event, your documents likely need attention. The next step is not to add another layer but to reassess the foundation. Gather your existing will and a current list of your assets and key family members, and schedule a formal review to determine if executing a new, clean will is the most prudent path to securing your legacy.
