A young couple I met with recently, new parents living in Brooklyn, were working on their first wills. When we reached the section on guardianship for their infant daughter, they quickly wrote down the name of a beloved aunt. “She’s great with our daughter,” the father said. “It’s the obvious choice.” It’s a conversation I’ve had hundreds of times. But what they hadn’t considered was the second, equally critical role—who would manage the money left for their child?
Most people think of these roles as one and the same. In New York, however, the law distinguishes between the person who raises your child (the guardian of the person) and the person who manages their inheritance (the guardian of the property, or a custodian). Appointing someone is not just about choosing a loving caregiver. It’s about appointing a financial steward. The roles require different skills. The best caregiver is not always the best financial manager.
Guardian vs. Custodian: Two Roles, One Legacy
When we draft an estate plan for parents of minor children, we are deliberately building a contingency plan for the unthinkable. That plan must ensure the child is cared for personally and financially. These are separate but parallel duties.
The guardian of the person is who most people think of—the individual who provides day-to-day care. They decide where the child lives, what school they attend, and make healthcare decisions. This role is about love, stability, and parental guidance.
The guardian of the property or a custodian, on the other hand, is a fiduciary tasked with managing the assets you leave to your child. This isn’t about tucking cash under a mattress. It’s about managing, investing, and distributing funds for the child’s benefit until they come of age. This person doesn’t need to be a Wall Street expert, but they must be responsible, organized, and financially prudent. They have a legal obligation to act in the child’s best interests—and only their best interests.
At our firm, we often recommend separating these roles. The loving aunt who provides a stable home may not be equipped to manage a significant investment portfolio or the proceeds from a life insurance policy. Appointing a different person—perhaps a sibling with a background in finance or a professional trustee—as custodian can protect the child’s inheritance and relieve the personal guardian of a substantial burden.
The Fiduciary Duty of a Custodian
Serving as a custodian for a minor is not an informal arrangement. It is a formal legal role with significant responsibilities and potential liabilities. The person you name is bound by a fiduciary duty—the highest standard of care recognized by law. They must manage the child’s assets with skill, care, and prudence.
In New York, this is often structured as a custodianship under the Uniform Transfers to Minors Act (UTMA). This framework, codified in New York’s Estates, Powers and Trusts Law, provides clear rules. For example, EPTL §7-6.12 outlines the standard of care required, stating that a custodian must “observe the standard of care that would be observed by a prudent person dealing with property of another.”
This standard has practical requirements:
- No Commingling: The custodian must keep the child’s assets entirely separate from their own. A separate bank account, titled in the name of the custodian for the benefit of the minor, is required.
- Prudent Investing: Funds must be invested reasonably. Speculative or high-risk investments are generally prohibited. The goal is preservation and reasonable growth.
- Meticulous Records: Every dollar spent must be for the child’s benefit and must be documented. The custodian is accountable to the child and, in many cases, to the Surrogate’s Court. They may be required to file formal accountings.
- Acting Impartially: The custodian cannot use the funds for their own benefit or for the benefit of their own family. Using the child’s money to pay the custodian’s mortgage is a breach of fiduciary duty with severe legal consequences.
This is a heavy responsibility. Stewardship. It requires diligence, integrity, and a clear understanding of the legal obligations involved.
Choosing with Deliberate Intention
Who in your life has the judgment and integrity for this role? The choice must be deliberate. Too often, I see wills where the decision was made emotionally or hastily, without a candid conversation with the person being nominated.
Before you put a name on paper, consider a few direct questions. Is this person financially stable themselves? Are they organized? Do they understand they would be legally accountable for their decisions? And critically—are they willing to serve? Many people, faced with the reality of the duties involved, might decline the role if they knew what it truly entailed.
You must also name at least one successor custodian. The person you choose today may be unable or unwilling to serve in ten years. Life brings changes—illness, relocation, financial hardship. A clear line of succession in your will prevents the court from having to make the decision for you, ensuring your child’s financial future remains in hands you have personally chosen.
This decision is one of the most important parts of your legacy. It’s the mechanism that ensures the resources you’ve worked to build will directly benefit your children as you intended. It deserves more than a moment’s thought—it requires a deliberate plan.
If you have already named a custodian in your will but have not revisited the decision in light of these duties, it may be time for a review. We can schedule a Fiduciary Nomination Review to assess whether your current choice still aligns with your family’s needs and the significant responsibilities the role demands.




