To change a will in New York with a codicil, you create a separate written amendment that modifies specific provisions of your existing will, then you sign and witness that codicil with the exact same legal formalities required for the original will under New York’s Estates, Powers and Trusts Law (EPTL) §3-2.1. A codicil does not replace your will — it works alongside it, revising the parts you want to update (such as who inherits, who serves as executor, or who is named guardian for your children) while leaving the rest intact. For families, this matters enormously: a properly executed codicil keeps your spouse and children protected after a marriage, a birth, or a major change in your circumstances, while a defective one can be challenged in Surrogate’s Court and unravel the very protections you intended to put in place.
This guide walks New York families through what a codicil is, when to use one, how to execute it correctly, and the family-focused decisions that should drive every amendment to your estate plan.
What Is a Codicil — and Why Families Use Them
A codicil is a legal document that amends an existing will rather than replacing it. Think of your will as the foundation of your family’s plan and the codicil as a precise, signed correction or addition to that foundation. Because a will takes effect only at your death and must be admitted to probate in the Surrogate’s Court, every word in it — and in any codicil — needs to withstand scrutiny long after you are gone and can no longer explain your intentions.
Families typically reach for a codicil after a life event that changes who needs protecting:
- Marriage or remarriage — adding a new spouse, or coordinating with a prior family.
- The birth or adoption of a child — naming a new beneficiary and a guardian.
- Death of a beneficiary or executor — naming a replacement.
- Changing your executor or guardian — when the person you originally chose is no longer the right fit.
- Adjusting gifts — increasing a child’s share, adding a grandchild, or removing a bequest.
- Updating a charitable gift or correcting a small error in the original will.
A codicil is best suited to discrete, limited changes. When your family situation has shifted dramatically — a divorce, a move, a substantial change in assets, or several amendments stacked on top of one another — a fresh will is usually cleaner and less vulnerable to confusion. You can learn more about that decision on our will drafting overview page.
A Codicil Must Be Executed Like a Will (EPTL §3-2.1)
Here is the single most important point for New York families: a codicil carries no weight unless it is executed with the same formalities as the will itself. A note scribbled in the margin, a typed page tucked inside the will, or an unsigned letter to your family is not a codicil — and it will not survive probate. Under EPTL §3-2.1, the execution requirements are strict and specific.
| Requirement | What EPTL §3-2.1 Demands |
|---|---|
| Signature placement | The testator must sign at the end of the document (or another person may sign in the testator’s presence and at their direction). |
| Witnesses | At least two attesting witnesses are required. |
| Publication | The testator must declare the instrument to be a codicil to their will. |
| Signing or acknowledgment | The testator signs in the witnesses’ presence or acknowledges the signature to each witness. |
| Witness duties | Witnesses sign at the testator’s request and add their residence addresses. |
| 30-day window | Both witnesses must sign within one 30-day period (a rebuttable presumption treats this requirement as met). |
If any of these steps is skipped, the codicil can fail — and a failed codicil can pull your whole plan into a dispute. For a deeper walk-through of these formalities, see our pages on New York will requirements and will execution.
Why “the same formalities” protects your family
The witness and publication rules exist to prove that the amendment is genuinely yours and was signed freely. When a codicil is executed correctly, it becomes far harder for a disappointed relative to claim that your spouse “pressured” you or that the change wasn’t really your intent. In other words, the formalities of EPTL §3-2.1 are not bureaucratic hoops — they are the legal shield that keeps your chosen beneficiaries protected.
Step-by-Step: Changing Your New York Will With a Codicil
- Locate and review your original will. Identify the exact clause numbers or provisions you want to change. A codicil should reference the original will precisely so there is no ambiguity about what is being amended.
- Decide whether a codicil or a new will is the right tool. For one or two clean changes, a codicil works well. For sweeping changes, draft a new will instead.
- Draft the codicil with clear language. State which will it amends (by date), which provisions it changes, and confirm that all other provisions of the original will remain in full force.
- Execute it under EPTL §3-2.1. Sign at the end, declare it to be a codicil to your will, and have at least two witnesses sign within the 30-day window, each adding their residence address.
- Store the codicil with the original will. Keep them together so the Surrogate’s Court receives both at probate. A codicil that cannot be found does your family no good.
- Tell your executor and family where the documents are. Protection only works if the right people can act on it.
You can explore amendment-specific guidance on our codicils and amendments page.
Family-Focused Reasons to Update — and the Right of Election
Some changes are about more than convenience; they go to the heart of protecting the people who depend on you.
Protecting a spouse. New York gives a surviving spouse a powerful safeguard: the spousal right of election under EPTL 5-1.1-A, which allows a surviving spouse to claim a minimum statutory share of the estate regardless of what the will says. If you remarry, a codicil that intentionally provides for your new spouse keeps your plan and this statutory right working in harmony rather than in conflict. If you fail to update your plan, the right of election can override your stale instructions in ways you never intended.
Protecting children. A codicil is the proper place to add a newborn, adjust a child’s share, or name a guardian. Without an updated, validly executed plan, the law — not you — decides. If a New Yorker dies with no valid will at all, EPTL Article 4 governs intestate distribution to next of kin, which may not reflect how you want your children provided for. Our intestacy and dying without a will page explains what that default looks like.
One clarification families often miss: a “living will” is a separate health-care and end-of-life document — it directs medical care while you are alive and has nothing to do with distributing property. It is not a property will and cannot be amended by a codicil. If your goal is to address medical wishes, see our living will page instead.
Frequently Asked Questions
Does a codicil need witnesses in New York?
Yes. A codicil must be executed with the same formalities as a will under EPTL §3-2.1, which requires at least two attesting witnesses who sign within one 30-day period and add their residence addresses, with the testator signing at the end and declaring the instrument to be a codicil.
Can I just write changes on my existing will?
No. Handwritten notes, cross-outs, or margin additions are not validly executed amendments and will not be honored in Surrogate’s Court. Any change must be made by a properly executed codicil or a new will.
When should I make a new will instead of a codicil?
A codicil works best for one or two discrete changes. If your family situation has changed substantially — divorce, multiple amendments, or major asset changes — a new will is usually cleaner and less likely to be contested.
Can a codicil affect my spouse’s right of election?
Your codicil controls how you distribute your estate, but it cannot eliminate a surviving spouse’s statutory minimum share under EPTL 5-1.1-A. A well-drafted codicil should account for that right rather than attempt to defeat it.
Protect Your Family With a Properly Drafted Codicil
A codicil is only as strong as its execution. One missed signature, one absent witness, or one ambiguous clause can expose your spouse and children to a costly dispute at exactly the moment they are most vulnerable. The attorneys at Morgan Legal Group, led by Russel Morgan, Esq., draft and execute codicils that hold up in New York’s Surrogate’s Court — so the people you love stay protected.
Ready to update your will the right way? Schedule your consultation with Russel Morgan, Esq. and put a family-focused plan in place today.
Further reading from Morgan Legal Group: New York will execution requirements.