A client, a successful Manhattan business owner, sat in my office last week. She has two children. Her daughter has worked alongside her for two decades, sacrificing evenings and weekends to grow the family company. Her son is a surgeon with a thriving practice of his own. The mother’s intention is clear: she wants to leave the business to her daughter and a smaller, liquid inheritance to her son. Her question to me was not about fairness—she felt her plan was eminently fair—but about survival. “How,” she asked, “do I keep this from destroying my family and my legacy?”
This is one of the most difficult conversations in estate planning. The default for most parents is a perfectly equal division of assets. It feels simple, clean, and conflict-averse. Yet in many families, equal is not equitable. A lifetime of different circumstances, needs, and contributions often means that a thoughtful, deliberate, and unequal distribution is the most responsible path forward.
Equal is Not Always Equitable
For many of the families I represent, an estate plan is the final expression of a lifetime of stewardship. It is a tool to acknowledge reality, not ignore it. There are many valid reasons for providing for children in different ways. Perhaps one child has special needs and will require lifelong financial care, while their siblings are self-sufficient. Another common scenario involves a child who received substantial financial support during the parent’s lifetime—for a down payment on a home, to fund a business, or to pay for graduate school—while another child never asked for a thing.
Sometimes, the disparity is about recognizing sacrifice. I often work with families where one adult child has become the primary caregiver for an aging parent, managing appointments, finances, and daily needs. To treat that child’s inheritance identically to that of a sibling who lives across the country feels, to many parents, like a disservice. The goal is not to punish one child or reward another; it is to create an outcome that reflects the full picture of the family’s life.
Departing from an equal split must be intentional. It requires a clear-eyed assessment of your assets, your children’s lives, and your ultimate goals. Without that deliberation, an unequal inheritance can feel like a posthumous judgment on a child’s worth—sparking resentment that fractures a family for generations.
The Inevitable Challenge: Surrogate’s Court
When a will is read and one sibling discovers their share is significantly smaller than their sibling’s, the first call is often to a lawyer. The legal challenge that follows—a will contest—takes place in New York’s Surrogate’s Court. The disinherited or short-changed beneficiary will typically allege that the will is invalid due to a lack of testamentary capacity or, more commonly, that the favored sibling exerted “undue influence” over the parent.
These contests are grueling, expensive, and emotionally devastating. They force family members into adversarial depositions, turn private matters into public records, and drain the very assets the family is fighting over. To discourage such challenges, many attorneys include an in terrorem clause, also known as a “no-contest” clause. This provision states that if a beneficiary challenges the will and loses, they forfeit their inheritance entirely.
However, this is not a perfect shield. Under New York Estates, Powers and Trusts Law (EPTL) §3-3.5, the clause is not triggered if the person challenging the will has “probable cause” for the contest. If a judge finds there were reasonable grounds to suspect undue influence—for example, if the parent was isolated and dependent on the favored child when the will was changed—the challenge can proceed without risk of forfeiture. We must be honest about what the law can and cannot do. A clause in a document cannot, by itself, prevent a deeply hurt child from having their day in court.
Fortifying Your Intentions
If you have a sound reason for an unequal distribution, our work is to build a structure around your plan that can withstand scrutiny and, just as importantly, communicate your reasoning. The legal documents are only part of the strategy.
First, we consider the structure. A will becomes a public document upon death and is administered under the direct supervision of the court. A revocable living trust, on the other hand, is a private agreement. While it can still be challenged, the administration is private, and the fact that you actively managed the trust’s assets for years before your death can be powerful evidence of your clear and consistent intent.
Second, we address the “why.” While it is generally not advisable to put detailed emotional explanations in the will itself, a separate “letter of wishes” can be a powerful tool. This is a personal letter, written by you to your children, to be shared after your death. It is not a legally binding document, but it provides the human context that the legal papers lack. Explaining that you gave one child less because you funded their education, or that you gave another more in recognition of their caregiving, can defuse anger and prevent the child from concluding the decision was based on a lack of love.
Documenting lifetime gifts is also critical. If you gave one child a significant sum years ago, it must be properly recorded. Otherwise, it is simply your word against theirs, which is of little value after you are gone.
A plan for unequal inheritance requires more than just drafting a document. It demands a thoughtful process to ensure your legacy is one of stewardship and clarity, not confusion and conflict. If your family circumstances call for a distribution that is equitable but not equal, the work begins by articulating your reasoning. The first step is a confidential meeting to map out your family’s dynamics and financial picture. Only then can we construct the legal framework to protect your intentions and preserve your legacy.
