Estate Planning Guest Posts
Is Your Will Legally Valid? How Simple Mistakes Can Jeopardize Your Estate Plan
A will is one of the most important documents a person can sign, yet many adults never create one. According to AARP, only 51 percent of adults age 50 and older say they have a legal will. Even for people who have taken that step, a will is only as strong as the formalities behind it. A missing signature, the wrong witness, or a document signed during a period of confusion can lead a probate court to reject the will entirely. When that happens, state intestacy laws will decide who receives the estate, and the outcome may look nothing like what the person wanted.
Each state sets its own rules for creating a valid will, and those rules can differ in ways that surprise people. A will that meets every requirement in one state may raise questions in another. An estate planning attorney can explain the laws where you live, draft a will that satisfies each formal requirement, and oversee the signing so the document has a better chance of holding up if someone challenges it later. An attorney can also catch issues you might not think about, such as how a marriage, divorce, new child, or move to another state affects a will you already signed.
Does a Will Need to Be Witnessed?
Most states require a will to be signed in the presence of two witnesses who also sign the document. The witnesses confirm that the person making the will signed it willingly and appeared to understand what they were doing. Many states prefer or require “disinterested” witnesses, meaning people who do not receive anything under the will. Using a beneficiary as a witness can create problems. Depending on the state, that person might lose some or all of their gift, or the will might need an additional witness to remain valid.
Witness requirements do have exceptions. About half of the states in the United States recognize handwritten, or “holographic,” wills that do not need witnesses, as long as the important parts are in the will-maker’s own handwriting and the document is signed. Other states reject holographic wills altogether. A few states, such as Colorado and North Dakota, also allow a will to be acknowledged before a notary instead of signed by witnesses. Relying on these exceptions can be risky, especially for people who own property in more than one state.
Is Notarization Required for a Will?
Notarization is not required for a will to be valid in most states. A notary stamp alone does not make a will legal, and a properly witnessed will without a notary is generally enforceable. Even so, a notary can still play a helpful role. Many states allow a “self-proving affidavit,” which is a sworn statement signed by the will-maker and the witnesses in front of a notary. With this affidavit attached, the probate court can usually accept the will without tracking down the witnesses to testify about the signing. That can save your family time and expense, particularly if a witness has moved away or died.
Louisiana stands apart from other states, as its most common form of will, called a notarial testament, must be signed before a notary. A growing number of states also permit electronic wills or remote witnessing by video, though the rules for these options vary widely from one state to the next.
Is It Legal to Cut a Family Member Out of Your Will?
Disinheriting a family member is generally legal, but the rules for children and spouses are quite different. In most states, a parent can leave an adult child nothing at all. Louisiana is again an exception, as its forced heirship law protects children under 24 and children with certain disabilities. Leaving a child out by accident is also treated differently than leaving a child out on purpose. Many states have laws that protect children born or adopted after a will was signed, so stating your intentions clearly in writing can prevent a court from assuming you simply forgot someone.
Spouses usually have stronger protections than children. Most states that do not follow community property rules give a surviving spouse the right to claim an “elective share,” which is often a set portion of the estate, regardless of what the will says. In the nine community property states, a spouse generally already owns half of the property acquired during the marriage. A prenuptial or postnuptial agreement can change these rights in some situations. Some people also include a “no-contest” clause meant to discourage family members from challenging the will, but states enforce these clauses to very different degrees.
Are Oral Wills Valid?
Oral wills, sometimes called nuncupative wills, are not valid in most states. A spoken promise to leave a house to a niece, even in front of several family members, usually carries no legal weight after death. A small number of states recognize oral wills in narrow circumstances, such as when a person is facing imminent death or when a service member is on active military duty. Even then, an oral will is often limited to personal property of modest value, and an oral will generally cannot pass real estate. Many of these states also require witnesses to put the oral will in writing within a short period.
Video recordings of someone describing their wishes generally do not replace a written will either. A recording can sometimes help show that a person had the mental ability to make a will if the written document is challenged, but it is not a substitute for one. For nearly everyone, a written and properly signed will is the only reliable way to make sure their final wishes will be carried out.
What Does it Mean to Have Testamentary Capacity?
Testamentary capacity refers to the mental ability a person needs to make a valid will. In most states, a will-maker must be at least 18 years old and of “sound mind” when signing. A few states make exceptions for younger people who are married or serving in the military. To decide whether someone had testamentary capacity, courts generally ask whether the person understood they were signing a will, had a general idea of what they owned, knew who their close family members were, and understood how the will would distribute their property.
The standard for testamentary capacity is lower than many people expect. A person with early dementia, a mental illness, or memory problems may still have capacity during a period of clarity. What courts focus on is the person’s state of mind at the moment of signing, not their condition months earlier or later.
Probate Litigation Is Becoming a Growth Sector: Why More Families Are Fighting Over Trusts, Homes, and Capacity
Disputes about how a deceased person’s property should be distributed are not a new or novel concept. However, courts are currently dealing with a higher volume of cases during probate. Families who seemed to have everything in order are now fighting over whether a parent understood what they were signing, whether a sibling exercised too much influence, or whether the language of a trust that was written years ago actually means what one side claims it means.
The reasons for these disputes are not difficult to trace. People are living longer, accumulating more assets, and often delaying formal estate planning until cognitive decline is already underway. Adult children who might once have deferred to a parent's wishes are more likely today to hire an attorney and challenge an outcome they believe is unfair.
Are Probate Cases on the Rise in the United States?
According to CourtTrax data from 2026, probate case filings have increased meaningfully across the United States in recent years, a trend that legal observers widely attribute to the largest intergenerational wealth transfer in American history. Baby Boomers hold an estimated $68 trillion in assets, and as that wealth moves to the next generation, disputes over how it should be distributed are multiplying.
Rising asset values, more complex ownership structures, blended families with competing interests, and longer periods of elder caregiving have all contributed to a probate environment that is more contested than it was a generation ago. In the absence of clear, updated estate plans, families often have to deal with prolonged probate cases and costly litigation.
What Does “Capacity” Mean in Probate, and Why Is it So Often Contested?
Testamentary capacity refers to the legal standard a person must meet to execute a will or trust. In most states, this means the person must understand the nature of the document they are signing, the extent of their property, who their natural heirs are, and how the document distributes their estate. The bar is not particularly high, but it is meaningful.
Capacity is contested so frequently because it is rarely documented at the moment it matters most. A person with early-stage dementia may have good days and bad days. An estate planning attorney who meets with a client for an hour cannot always detect cognitive impairments that their family members may see every day.
Medical records often describe symptoms in clinical language that does not translate cleanly into legal conclusions. Because the person whose capacity is in question is no longer alive to speak for themselves, courts may be forced to reconstruct their mental state from fragmentary evidence.
Allegations of Undue Influence in Probate Court
Undue influence claims arise when someone argues that a third party pressured or manipulated a person who created an estate plan into making decisions they would not have made freely. These claims are common in cases involving:
- A caregiver, romantic partner, or new spouse who was present during the estate planning process and benefited significantly from the final documents
- A child who provided primary care for an aging parent and received a disproportionate share of the estate compared to their siblings
- A family member who isolated the deceased from other relatives in the months or years before their death
- Sudden changes to a will or trust shortly before a person’s death that reversed a long-standing distribution plan
- A situation where the person who drafted the estate planning documents also stood to benefit from them
Proving undue influence requires showing that the pressure was so substantial it overcame the person's free will. Courts may look at the relationships between the parties, the opportunity to exert influence, the vulnerability of the person who made the plan, and whether the outcome makes sense given the person's known wishes and values.
Unclear Trust Language Can Lead to Conflict
Trusts are powerful instruments, but they are only as reliable as the language used to create them. When a trust says that assets should be distributed for a beneficiary's "health, education, maintenance, and support," that phrase may seem self-explanatory. In practice, trustees and beneficiaries regularly disagree about what a trust authorizes.
Disputes may also arise around the timing of distributions, the definition of who qualifies as a beneficiary, what happens when a named beneficiary dies before the trust’s assets have been distributed, and how a trustee's discretion is supposed to be exercised. Some of these conflicts may stem from genuinely ambiguous language. Others may occur because of an estate plan that was never updated to account for changed circumstances, new family members, or assets that were acquired after the trust was created.
When Estate Executors Clash With Beneficiaries
An executor, sometimes called a personal representative, has a legal duty to administer an estate according to the will and the applicable laws. They are required to protect the best interests of the beneficiaries rather than making decisions based on the executor's own interests or preferences. When an executor fails to handle an estate’s assets correctly, beneficiaries may have grounds to challenge the administration of the estate.
Common sources of conflict include delays in distributing assets, failure to properly inventory or value property, self-dealing by an executor who is also a beneficiary, refusal to provide accountings, and decisions about selling or managing estate assets that other beneficiaries disagree with.
When these conflicts cannot be resolved informally, the matter may end up in court. Beneficiaries who believe an executor is not fulfilling their responsibilities do not have to wait and hope the situation improves. The outcome depends on the nature of the alleged misconduct, the harm caused to the estate, and whether the beneficiaries can produce records showing that the executor failed to meet their legal obligations.

