A client called our Manhattan office last week with a common question. His son, who he’d named as executor in his will ten years ago, had just moved to Singapore for a long-term assignment. He wanted to appoint his daughter, who lives nearby, as the new executor. “Do I have to go through the whole process of writing a new will?” he asked. “It seems like a lot of work for one small change.”
In his situation, the answer is likely no. This is a scenario where a codicil—a formal, legally executed amendment to an existing will—is a practical tool. But it is a tool that must be used with precision and only in the right circumstances. A poorly handled codicil creates more problems than it solves, leaving a legacy of confusion for the family it was meant to protect.
What a Codicil Does—And How It Must Be Done
Think of a codicil as a legal addendum. It is a separate document that references the original will by its date and then clearly states the specific changes being made. It might add a new beneficiary, remove a bequest for an item you no longer own, or, as in my client’s case, change a nominated fiduciary like an executor or trustee.
Once signed, the codicil is attached to the original will and becomes part of it. It does not replace the entire will; it only modifies the specific sections it addresses. This seems simple, but the most critical point is this: a codicil is not a casual note. Scribbling a change in the margin of your will or attaching a sticky note has no legal effect in New York.
To be valid, a codicil must be executed with the exact same legal formalities as a will. Under New York’s Estates, Powers and Trusts Law (EPTL) § 3-2.1, the document must be in writing, signed by you at the end, and witnessed by at least two people who sign in your presence. If you fail to meet these requirements, the Surrogate’s Court will disregard the codicil. Your original will then stands as if no change was ever attempted.
When a Codicil Creates More Risk Than It’s Worth
While a codicil is effective for minor adjustments, I often advise against it for substantial changes. It is a scalpel, not a sledgehammer. If your life has undergone a significant shift—a divorce, a new marriage, the birth of several children, or a complete rethinking of how your assets should be distributed—a codicil is usually the wrong choice.
Why? Because a codicil that revokes and replaces large portions of the original will can create ambiguity. It forces your executor and the court to read two documents (or more, if there are multiple codicils) and piece together your final intentions. This patchwork can become a breeding ground for disputes and will contests among beneficiaries who may argue over which document controls which asset.
For example, if you want to disinherit a child or completely alter the percentages your heirs receive, creating a clean, new will is the more prudent path. A new will contains language that explicitly revokes all prior wills and codicils, leaving a single, clear document to guide the administration of your estate. The goal of estate planning is to provide clarity and continuity for your family, not a legal puzzle. Stewardship.
Review Before You Revise
Your will is the foundational document of your legacy. Any changes to it must be deliberate and legally sound to prevent complications for your loved ones. An out-of-date fiduciary or a minor bequest to a new grandchild can often be handled with a codicil, but it is not an automatic choice.
Before you amend your will, review the document against your current family and financial situation. To determine if a codicil is sufficient or if a new will is the more responsible path, schedule a will and codicil assessment with our firm to discuss the clearest way to update your plan.
