A client recently came to our Madison Avenue office with what seemed like a simple request. Her son, who she had named as executor in her will ten years ago, had moved to California. She wanted to appoint her daughter, who lives in Brooklyn, in his place. “Can’t we just add a little note to the will?” she asked. “I’ve heard of something called a codicil.”
She’s right, a codicil exists. It is a legal document for making minor changes to an existing last will and testament. In theory, it sounds efficient—a quick patch instead of a complete overhaul. In my years of practice, however, I’ve seen these “simple notes” create complicated, expensive messes for the families left behind. More often than not, a codicil is the wrong tool for the job.
The Same Rules, More Risk
Many people believe a codicil is an informal update. They imagine handwriting a change in the margin or attaching a signed sticky note. This is a dangerous misconception. Under New York law, a codicil must be executed with the exact same formalities as a will. This is not a suggestion; it is a rigid requirement.
According to New York’s Estates, Powers and Trusts Law (EPTL) § 3-2.1, the codicil 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.
- Declared by the testator to the witnesses that the instrument is a codicil to their will.
- Witnessed by two individuals who sign their names and addresses at the testator’s request.
Failure to adhere to any one of these steps renders the codicil invalid. The original will stands as if the codicil never existed. The larger problem, however, isn’t just proper execution. The real danger is what happens in Surrogate’s Court when multiple documents must be read together.
Why Piecemeal Changes Invite Conflict
The primary goal of a well-drafted will is to provide absolute clarity. It should leave no room for interpretation or argument. A codicil, by its nature, works against this goal. It creates a paper trail of changes that can inadvertently introduce ambiguity and sow the seeds of a future will contest.
Consider a will that leaves a specific property to a nephew. Years later, the testator adds a codicil leaving that same property to a daughter. This seems straightforward, but what if the original will also specified that the contents of the property—art, furniture, heirlooms—were to be distributed among several other family members? Does the codicil override that provision as well, or does the daughter only get the real estate? This is the kind of ambiguity that forces a judge to intervene, draining the estate of time and money.
When the will is presented for probate, every codicil must be submitted with it. This complicates the process. The executor must locate not only the witnesses to the original will but also the witnesses to every subsequent codicil. If a witness has moved, passed away, or has a faded memory of the signing ceremony from a decade prior, it creates a significant hurdle for the court and the family.
A codicil that makes a significant change, such as disinheriting a child or dramatically altering a bequest, also creates a focal point for a legal challenge. An objectant can claim the testator lacked mental capacity or was under undue influence on the specific day the codicil was signed. It isolates a single moment for intense legal scrutiny, making the plan far more vulnerable than a single, cohesive document would be.
The Prudent Path: A New Will
So, is there ever a time for a codicil? Perhaps, but the circumstances are exceedingly rare. For a very minor, uncontroversial change—like correcting a typographical error or changing an executor when all beneficiaries are in complete agreement—it might be considered. Even then, I hesitate.
The cleaner, safer, and ultimately more responsible approach is almost always to execute a new will. A new will begins with a standard legal clause that explicitly revokes all prior wills and codicils. This act of revocation wipes the slate clean. It creates a single, consolidated document that represents your final wishes. There is no need to cross-reference older documents or worry about contradictions. The new will stands alone as the definitive statement of your legacy.
Stewardship. That’s what this is about. It’s the duty to leave behind a clear plan, not a puzzle for your loved ones and the courts to solve. The modest cost of redrafting a will is insignificant compared to the potential emotional and financial cost of litigation born from a poorly conceived codicil.
Life changes. Your financial situation, your family dynamics, and your intentions will evolve. Your estate plan must evolve with them—but through deliberate, complete updates, not with patchwork fixes. If your will no longer reflects your wishes, the first step isn’t to amend it. It’s to replace it. We can schedule a session to perform a full review of your existing will and determine if a complete restatement is the most prudent course for protecting your family’s future.





