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Challenging a will or trust: What everyone should know

On Behalf of | Jan 23, 2026 | Probate and Estate Law

Challenging a will or trust is a scenario that plays out far more frequently in the U.S. than many people might initially imagine. When a loved one passes away, emotions often run high, and questions about fairness, intent or legality may arise. 

Understanding what is involved in contesting an estate document can help individuals make informed decisions about actions that may ultimately affect family relationships and inheritance rights.

The basics of challenging a will or trust

Will and trust challenges are usually initiated when someone believes that a particular testamentary document does not reflect the true intentions of the person who created it. Common grounds for probate litigation include lack of mental capacity, undue influence, fraud or improper execution. For example, a will signed when the decedent was suffering from advanced illness or cognitive decline may raise concerns about whether they understood what they were signing. Similarly, sudden changes that benefit one person disproportionately, especially shortly before death, often trigger scrutiny.

Sibling disputes are a frequent cause of probate litigation. Brothers and sisters may disagree about how assets were distributed, particularly if one sibling was more involved in a parent’s care or finances. Accusations of manipulation or favoritism can lead to formal challenges, even when the underlying issue of concern is long-standing family tension. These disputes can be emotionally draining and financially costly if not approached carefully.

When concerns like these arise, it is important to understand that the process of challenging a trust differs from challenging a will. Trusts may be administered outside of court, but disputes can still require judicial intervention. The burden of proof generally rests with the person bringing the challenge to a far greater extent than it may when a contested will is at issue, which means that informed preparation and documentation are even more important in these cases. 

At the end of the day, not every perceived unfairness rises to the level of a potentially successful legal challenge. Courts focus on legal standards, not moral judgments. As such, challenging a will or trust is not a step to take lightly. Such efforts can strain family relationships and delay estate administration. At the same time, valid concerns deserve careful review. A skilled legal team can help individuals understand their rights, assess the strength of a potential challenge and navigate the probate process with greater clarity and purpose.