A client recently came to our Manhattan office with a valid concern. His mother, who is living with advanced dementia, was recently placed under a court-appointed guardianship. My client holds his mother’s will, which names him as executor and the primary heir to her Brooklyn brownstone. His question was direct: “Does this guardianship override my mother’s will?”
The answer isn’t a simple yes or no. The two documents operate in different timelines. A will speaks for you after you die. A guardianship speaks for you when you are alive but legally incapacitated. They don’t directly override one another, but the actions taken under a guardianship can profoundly affect the legacy you intend to leave behind.
Guardianship Manages the Living, Wills Distribute for the Deceased
The core of the issue is timing. A Last Will and Testament has no legal power until the person who wrote it—the testator—has passed away and the will has been admitted to probate by the Surrogate’s Court. Until that moment, it is just a piece of paper expressing intent.
A guardianship, on the other hand, is a legal tool for the living. When a court determines an individual can no longer manage their own personal or financial affairs, it appoints a guardian. In New York, these proceedings are governed by Article 81 of the Mental Hygiene Law. The court gives the guardian specific powers to act on behalf of the incapacitated person, from paying bills and managing investments to making healthcare decisions.
The conflict arises here. Imagine the mother in our example requires expensive long-term care. The court-appointed guardian has a fiduciary duty to ensure her needs are met. If her income is insufficient, the guardian may be authorized by the court to sell her assets—including the brownstone—to pay for her care. When she eventually passes away, the will is still valid, but the primary asset it was meant to distribute is gone. The will wasn’t overridden, but its practical effect was hollowed out by necessary actions taken during her lifetime.
A Guardian’s Powers Are Not Absolute
A guardian’s authority, while significant, has firm limits. A guardian cannot create a new will or change an existing one on behalf of the incapacitated person. The right to make a will is deeply personal and requires testamentary capacity—something a person under a guardianship is presumed to lack. The guardian’s job is stewardship of the person’s existing estate, not the redesign of their legacy.
The guardian must manage the property prudently and always act in the incapacitated person’s best interests. This includes preserving assets when possible. If a family member believes a guardian is mismanaging funds, selling assets unnecessarily, or acting improperly, they can petition the court to review the guardian’s actions or have them removed. The court retains ultimate oversight.
The goal is to honor the person’s dignity and, to the extent possible, their known wishes. A guardian should consider the person’s estate plan when making financial decisions, but their primary, legally mandated responsibility is to the living person in their care, not to the future beneficiaries of a will.
Nominating a Guardian for Your Children in a Will
The word “guardian” also appears in wills in another crucial context: nominating a person to care for minor children. This is one of the most important decisions any parent can make. In your will, you can and should name the person—the custodian—you want to raise your children if you and their other parent are no longer able to.
This nomination is a powerful recommendation to the court—not a legally binding appointment. The Surrogate’s Court will always make the final decision based on the “best interests of the child” standard. In the overwhelming majority of cases, the court respects the parents’ choice. It would only set aside that nomination if the chosen person were deceased, unwilling to serve, or found to be unfit to act as a guardian.
Choosing someone and, just as importantly, choosing a backup, is a foundational part of responsible planning. Without a nomination in a will, the court must choose a guardian without your input, potentially leading to family disputes or a decision you would never have wanted.
Intentional Planning Is the Best Defense
The tension between a potential guardianship and your will can be managed with deliberate planning. Instead of leaving things to a court proceeding, you can take control of your own contingency plans. A durable power of attorney allows you to appoint an agent you trust to handle your financial affairs if you become incapacitated. A health care proxy does the same for medical decisions.
These documents, created while you have capacity, allow you to choose your decision-makers, rather than having a court choose for you. In many cases, a properly drafted power of attorney and health care proxy can eliminate the need for a guardianship proceeding altogether. This keeps your family out of court, saves significant expense, and ensures the people managing your affairs are the ones you selected.
For individuals with significant assets, a revocable living trust is another powerful instrument. By placing assets into a trust, you appoint a trustee to manage them for your benefit if you become incapacitated and to distribute them upon your death, often bypassing the probate process entirely. It is the ultimate expression of intentional stewardship.
If you are concerned about how your own plan would hold up under the pressure of incapacity, the first step is a clear-eyed review. I invite you to schedule a 30-minute review of your existing will and related documents with our firm, where we can identify potential conflicts and discuss a more resilient structure for your legacy.




