What Are the Grounds for Contesting a Will? (w/Examples) + FAQs

A will can be contested on specific legal grounds — not just because someone is unhappy with their inheritance. The most common grounds include lack of testamentary capacity, undue influence, fraud, forgery, improper execution, and revocation by a later document. Under the Uniform Probate Code Section 2-502, every valid will must be in writing, signed by the testator (or someone acting at their direction), and witnessed by at least two individuals — and any failure to meet these requirements opens the door to a legal challenge.

Here is a striking number: roughly 3% of all wills filed in the United States face some form of dispute, yet the success rate for those challenges hovers around just 1% nationally. In California alone, fewer than a third of will contests end in the challenger’s favor. The odds may seem low, but when the right facts are present, a contest can protect families from fraud, manipulation, and stolen inheritances.

Here is what you will learn in this article:

• 📜 The six major legal grounds for contesting a will and how courts evaluate each one
• ⚖️ Who has legal standing to file a will contest and the strict deadlines you must meet
• 🏛️ The step-by-step probate litigation process from petition to trial
• 🚨 Real-world scenarios and landmark court cases that changed estate law
• ✅ Mistakes to avoid, do’s and don’ts, and answers to the most common FAQs

Who Has Legal Standing to Contest a Will?

Before you can challenge a will, you must prove you have standing — meaning you have a financial stake in the outcome of the contest. You cannot file a challenge just because you disagree with how someone distributed their property. The court requires that you stand to gain or lose something real based on the will’s validity.

People who generally have standing include the deceased’s direct heirs, current beneficiaries, and beneficiaries named in a previous version of the will. In Texas, creditors with a legitimate financial claim against the estate may also challenge the document. Legal guardians and representatives can file on behalf of minors or incapacitated individuals in most states.

Under California Probate Code Section 8250, only people with a direct interest in the estate — such as a spouse, child, parent, named beneficiary, or creditor — can file an objection with the probate court. The same general principle applies in every state, though the specific rules and deadlines vary.

Ground #1 — Lack of Testamentary Capacity

Testamentary capacity is the legal minimum mental ability a person must have when they sign a will. This is one of the most common grounds for contesting a will. The law does not require a person to be in perfect mental health. It requires them to understand three things at the moment they sign: the nature and extent of their property, who their natural heirs are, and the practical effect of what they are doing with their will.

Disputes over capacity often arise when the testator was elderly, suffered from Alzheimer’s or dementia, or was heavily medicated at the time of signing. Capacity is judged at the exact moment the will was signed — not before and not after. A person who has dementia but experiences a lucid interval may still have valid testamentary capacity during that window.

Scenario: Ruth’s Alzheimer’s Diagnosis

Ruth, age 84, was diagnosed with moderate Alzheimer’s disease. Her son, David, helped her draft a new will that left 80% of her estate to him and cut out her daughter, Karen. Karen contests the will, arguing that Ruth lacked testamentary capacity.

The burden of proof in this type of contest typically falls on the challenger. In many states, the standard is preponderance of the evidence, meaning the challenger must show it is more likely than not that the testator lacked capacity.

Ground #2 — Undue Influence

Undue influence is perhaps the most frequently raised objection in will contests nationwide. It occurs when someone overpowers the free will of the testator through manipulation, coercion, or pressure to benefit themselves. The key distinction is that simple persuasion — like asking a parent to include a gift — does not rise to the level of undue influence. The influencer must have taken advantage of the testator.

Courts look for specific red flags when evaluating these claims: the testator being isolated from family, sudden changes to long-standing estate plans, a beneficiary involved in preparing the will, and a dependent relationship between the testator and the alleged influencer. Proof of undue influence is almost always circumstantial because the manipulation happens behind closed doors.

In Nebraska, courts require that undue influence be proven by clear and convincing evidence — a higher bar than preponderance. Texas follows a similar standard, requiring that proof be “unmistakable and convincing”. Florida takes a different approach: under §733.107, the burden of proof shifts to the will’s proponent once the challenger establishes certain red-flag facts, such as a confidential relationship and active procurement of the will.

Scenario: The Caregiver Who Rewrote the Will

James, age 91, hired a live-in caregiver named Linda. Over two years, Linda gradually isolated James from his children. She drove him to a new attorney — one she selected — where James signed a will leaving Linda 70% of his estate.

Ground #3 — Fraud

Fraud in the context of wills occurs when someone intentionally deceives the testator into signing a document or approving provisions they do not understand or did not intend. There are two main types of fraud in will contests: fraud in the execution and fraud in the inducement.

Fraud in the execution happens when the testator does not realize they are signing a will at all — for example, someone tells them the document is a power of attorney or a simple financial form. Fraud in the inducement occurs when someone feeds the testator false information that influences the will’s contents. A classic example: telling a mother that her daughter has abandoned the family, causing the mother to disinherit the daughter based on a lie.

Proving fraud requires showing that the person making the false statement knew it was false and intended it to change the will’s terms. Evidence might include inconsistent statements, communications between the alleged fraudster and third parties, and testimony from people who witnessed the deception. Fraud claims often overlap with undue influence claims in practice.

Ground #4 — Forgery

Forgery is one of the most serious — and provable — grounds for a will contest. It involves the unauthorized signing of a will or the alteration of its contents after the testator has already signed. Forgery can take many forms, from someone tracing the testator’s signature to using a computer to copy and paste a signature onto a do-it-yourself estate plan.

Probate fraud investigators and forensic handwriting experts are often critical to these cases. Experienced probate litigators will suspect forgery when a new will appears with unusual signatures and content that contradicts the testator’s known wishes. In one real case handled by Keystone Law, a will was handwritten by an elderly decedent’s caregiver and signed with only an “X” — completely excluding the closest surviving heir. The will was successfully challenged and resulted in a highly favorable settlement.

Common methods forgers use include tracing the testator’s actual signature, hiring someone to replicate the signature, digitally copying the signature, and physically moving an incapacitated testator’s hand to simulate a signature.

Ground #5 — Improper Execution

Every state has specific formalities that must be followed for a will to be valid. When those rules are broken — even unintentionally — the will can be declared invalid for improper execution. Under the Uniform Probate Code, a valid will must be in writing, signed by the testator, and either signed by at least two witnesses or acknowledged before a notary public.

State rules add their own layers. In Florida, both witnesses must watch the testator and each other sign the document. Many states prohibit beneficiaries from serving as witnesses. Some states require notarization in addition to witnesses, and witnesses must generally be at least 18 years old.

Evidence of improper execution might include proof that the testator did not sign the will, that the required number of witnesses were missing, or that a witness was underage. If the will is holographic (handwritten), a challenger can argue the document was not actually in the testator’s handwriting. Handwriting experts and lay witnesses who knew the decedent’s handwriting are commonly used in these proceedings.

Scenario: The Missing Second Witness

Tom drafted a will in his kitchen with his neighbor, Bill, as the only witness. Tom’s state requires two witnesses. After Tom died, his estranged brother, Greg, discovered the will was signed by only one witness.

Ground #6 — Revocation by a Subsequent Will or Document

A person can generally only have one valid will in effect at a time. When someone creates a new will, it typically revokes the previous one. If multiple versions of a will are submitted to probate, the court must determine which is the valid and most recent document. Challenges under this ground involve arguments that a later will was created that overrides the one being probated, or that the submitted will was previously revoked by the testator.

A will can also be revoked by physical destruction — tearing it up or burning it with the intent to revoke. In Texas, if a will was last seen in the testator’s possession and cannot be produced after death, courts presume the testator destroyed it with the intent to revoke. The person trying to probate the will must then overcome that presumption with competent evidence.

Statutes of Limitations — How Long You Have to Act

Time is your biggest enemy in a will contest. Every state imposes a strict deadline, and missing it permanently bars your right to challenge the will — no matter how strong your evidence is. The timeframe ranges from as few as three months to as long as two years depending on the state.

There are narrow exceptions. If fraud or concealment prevented discovery of the grounds for a contest, a court may allow an extension. The time limits may also be tolled (paused) for minors or persons deemed legally incompetent, giving them additional time once they reach legal age or regain capacity.

No-Contest Clauses (In Terrorem Clauses)

A no-contest clause — also called an in terrorem clause — is a provision in a will that says any beneficiary who contests the will forfeits their inheritance. The purpose is to deter unhappy heirs from challenging the testator’s wishes. These clauses are common, but their enforceability varies dramatically from state to state.

Florida takes the strongest position against these clauses. Under Florida Statute §732.517, no-contest clauses are completely unenforceable as a matter of public policy. A beneficiary in Florida can challenge a will without risking disinheritance.

Approximately 20 states, including Michigan, enforce no-contest clauses unless the challenger had probable cause to bring the challenge. States like California, Illinois, and Texas strictly construe these clauses, meaning courts frequently find ways to rule that a beneficiary’s actions did not trigger the penalty. In New York, no-contest clauses are enforceable but are also strictly construed — and the courts have held that clauses attempting to prevent a beneficiary from questioning a fiduciary’s conduct will not be enforced.

The terms of no-contest clauses vary widely from will to will, and the law regarding their enforceability is very fact-specific. Courts must examine the specific language used, the conduct alleged to violate it, and whether the clause conflicts with state law or public policy. Because these clauses are considered “forfeiture provisions,” they are interpreted narrowly by courts as a general rule.

The Step-by-Step Process of Contesting a Will

Understanding the procedural roadmap is critical. A will contest follows a structured legal process that is similar to civil litigation but takes place within probate court.

Step 1: Filing the Petition or Objection

The process begins when the challenger files a formal objection to the will in probate court. Under California’s process, the contestant files an objection, and a summons is issued and served on all interested parties who then have 30 days to respond. The filing must clearly state the legal grounds for the challenge and include any supporting facts available at that stage.

Step 2: Service of Notice

All interested parties — heirs, beneficiaries, the executor — must receive formal legal notice of the contest. This is required so every person with a stake in the outcome has the chance to participate or respond. In many states, this notice must also be published publicly.

Step 3: Discovery

The discovery phase is the most detailed and time-intensive part of the process. Both sides exchange information and gather evidence using the following methods:

• Interrogatories — written questions requiring written answers under oath
• Depositions — oral testimony given under oath and recorded by a court reporter
• Requests for production — demands for documents, medical records, bank statements, and emails
• Subpoenas — court orders compelling third parties to produce evidence or testify

This is where attorneys uncover medical records showing vulnerability, financial records showing unusual transfers, and communications between parties that reveal the true story behind the will.

Step 4: Mediation and Settlement Negotiations

Many jurisdictions either encourage or require mediation to resolve disputes without trial. A neutral third party facilitates discussions between the two sides. Because 90% to 97% of litigated will contest cases settle outside of court, mediation is often the most practical path to resolution. A successful mediation agreement is presented to the court for approval.

Step 5: Trial

If mediation fails, the case proceeds to trial. The probate court evaluates the evidence and decides on the will’s validity. Witnesses may include family members, medical experts, forensic handwriting analysts, and anyone with relevant information. The burden of proof depends on the ground being argued and the state’s rules.

Step 6: Ruling and Appeal

The judge enters an order admitting or rejecting the will. If a party disagrees, appeals are available — though they extend administration time and delay distribution of assets. If the will is invalidated, the court either admits a previous valid will or distributes the estate under state intestacy laws.

Landmark Will Contest Cases

Real-world cases illustrate how these legal principles play out — sometimes over decades of litigation.

Marshall v. Marshall (Anna Nicole Smith)

This case is one of the most famous will contests in American history. When billionaire oil tycoon J. Howard Marshall II died in 1995, he left nearly all of his assets to his son, Pierce Marshall, and excluded his wife, Anna Nicole Smith. Smith claimed Pierce had tortuously interfered with her inheritance by preventing J. Howard from creating a separate trust for her benefit.

The case produced conflicting judgments in different courts. A California bankruptcy court awarded Smith $474 million, but a Texas probate court ruled against her. The case went to the U.S. Supreme Court twice — in Marshall v. Marshall (2006) and Stern v. Marshall (2011) — setting major precedents about the jurisdiction of federal and state probate courts. Sanctions were later imposed against Pierce Marshall’s estate for destroying and hiding evidence, falsifying documents, and causing undue delays. Both Anna Nicole Smith and Pierce Marshall died before the litigation concluded, leaving their estates’ attorneys to continue the fight.

Brooke Astor Estate

Brooke Astor was a New York philanthropist whose $100 million estate became the center of a five-year probate battle. Her son, Anthony Marshall, and her attorney were accused of stealing from her wealth, forging her signature on a codicil, and revising her will while she was suffering from Alzheimer’s disease. Both were convicted at trial on charges of conspiracy, grand larceny, and scheming to defraud.

The court found the later revisions to her will were “more the product of duress than volition”. The settlement slashed Anthony’s inheritance to $14.5 million and stripped his control of the estate’s charitable contributions. This case stands as a powerful example of how undue influence, forgery, and lack of capacity can overlap in a single contest.

Leona Helmsley and Trouble the Dog

When New York hotel heiress Leona Helmsley died in 2007, her will left $12 million in a pet trust to her Maltese dog, Trouble, while disinheriting several close family members, including two grandchildren. A court battle followed. Manhattan Surrogate Court Judge Renee Roth ruled that Helmsley was mentally unfit when she executed her will. The court reduced the pet trust to $2 million and awarded $6 million to the two disinherited grandchildren. This case highlights how excessive or unusual bequests can invite scrutiny and challenge.

Mistakes to Avoid When Contesting a Will

Even strong cases fail because of avoidable procedural and strategic errors. These are the most common mistakes:

• Missing the statute of limitations. This is the number one case-killer. In Florida, you have just 90 days from the Notice of Administration. In California, it is 120 days from probate admission. Miss the deadline, and your case is dead — regardless of the evidence.
• Filing without standing. If you are not an heir at law, a named beneficiary, or someone who would inherit under a prior will or intestacy laws, the court will dismiss your case immediately.
• Contesting based on “unfairness” alone. Feeling cheated is not a legal ground. You must prove one of the recognized legal grounds: incapacity, undue influence, fraud, forgery, improper execution, or revocation.
• Ignoring a no-contest clause. In states that enforce these clauses, challenging a will without probable cause can mean forfeiting your entire inheritance. Consult an attorney before taking any action.
• Waiting to gather evidence. Witnesses move away, memories fade, and documents are lost or destroyed over time. Act immediately to preserve medical records, communications, and financial documents.
• Failing to hire a probate litigation attorney. Will contests involve complex rules of evidence, discovery procedures, and strict court deadlines that require experienced legal representation.

Do’s and Don’ts of Will Contests

Do’s

• Do consult a probate attorney immediately upon learning of a suspicious will — deadlines are short, and early action preserves evidence and protects your rights.
• Do gather and preserve medical records, financial statements, emails, and text messages that support your claims — these are the backbone of discovery.
• Do request a copy of the will and all codicils from the probate court as soon as the estate is opened — you need to know exactly what you are challenging.
• Do consider mediation as an alternative to trial — it saves time, reduces costs, and most will contests are resolved this way.
• Do document any signs of isolation, manipulation, or cognitive decline you witnessed before the testator’s death — contemporaneous notes carry weight in court.

Don’ts

• Don’t contest a will solely out of anger, grief, or disappointment — the court requires specific legal grounds, and a frivolous contest can result in sanctions.
• Don’t sign any settlement agreements or waivers without having your own attorney review them — once you sign, your rights may be permanently gone.
• Don’t ignore the no-contest clause in the will — in many states, challenging a will without probable cause triggers disinheritance.
• Don’t discuss the details of your contest on social media or with people outside your legal team — statements can be used against you in discovery.
• Don’t assume you have plenty of time — the statute of limitations can be as short as 90 days in Florida or 120 days in California and New York.

Pros and Cons of Contesting a Will

Pros

• Corrects genuine wrongdoing. A successful contest can undo the effects of fraud, forgery, or manipulation and restore a rightful heir’s inheritance.
• Protects vulnerable people. Will contests shine a light on elder abuse, as demonstrated in the Brooke Astor case.
• Settlement is common. Because 90% to 97% of cases settle out of court, challengers often reach a favorable resolution without going to trial.
• Enforces the law. Contesting a will holds bad actors accountable and ensures that state execution requirements are respected.
• Deters future misconduct. High-profile will contests discourage others from manipulating elderly or vulnerable testators.

Cons

• Low success rate at trial. The national success rate hovers around 1% for fully litigated cases.
• Expensive. Attorney fees, expert witness costs, and court fees add up quickly, and each party is generally responsible for their own costs.
• Emotionally draining. Litigation exacerbates grief and family conflict, sometimes permanently damaging relationships.
• Delays estate distribution. A contest freezes the estate’s administration, which means no one receives their inheritance until the case is resolved.
• Risk of disinheritance. In states that enforce no-contest clauses, an unsuccessful challenge can cost you everything.

Burden of Proof Comparison

The burden of proof determines how much evidence you need to win your case. It varies by state and by the specific ground you are arguing.

State-by-State Nuances Worth Knowing

While federal law does not directly govern wills, every state follows its own probate code with significant differences in execution requirements, deadlines, and enforcement of no-contest clauses.

• California allows holographic (handwritten) wills as valid even without witnesses, as long as the signature and material portions are in the testator’s handwriting. The state strictly construes no-contest clauses.
• Texas gives challengers a generous 2-year window to file but presumes a will is valid, placing the full burden on the challenger.
• Florida has the shortest effective deadline at 90 days and is the most challenger-friendly state regarding no-contest clauses — they are void as a matter of public policy.
• New York enforces no-contest clauses but will not enforce them when a beneficiary is questioning a fiduciary’s conduct. The state allows 120 days from probate admission to file.
• Georgia has no fixed statute of limitations for will contests — the deadline depends on the type of probate process and contest.
• Some states are “double contest” states, meaning you get two chances to challenge a will — once during a proof-of-will hearing before the will is admitted to probate, and again during a formal will contest after admission.

FAQs

Can I contest a will before the person dies?
No. A will has no legal effect until the testator dies and the will is submitted to probate. You must wait until after death and the opening of the estate.

Can I contest a will if I am not mentioned in it?
Yes. If you are an heir at law who would inherit under intestacy laws had the will not existed, you have standing to contest even if the will does not name you.

Does contesting a will stop the estate from being distributed?
Yes. Filing a contest pauses the administration and distribution of the estate until the dispute is resolved by settlement or court ruling.

Can a no-contest clause prevent me from contesting?
No, not in every state. In Florida, no-contest clauses are completely unenforceable. In about 20 states, the clause will not be enforced if you had probable cause.

Is it expensive to contest a will?
Yes. Attorney fees, expert witnesses, and court costs can be significant. Each party typically pays their own costs, though some states allow fee recovery.

Can I contest a will without a lawyer?
Yes, but it is not recommended. Will contests involve strict deadlines, rules of evidence, and complex discovery procedures that make professional representation critical.

What happens if the will is declared invalid?
Yes, the estate is then distributed under a prior valid will or, if none exists, under the state’s intestacy laws.

Can a will be contested after probate is closed?
No, in almost every situation. Once probate is closed and assets are distributed, it is extremely difficult to reopen the case, except in rare instances involving fraud.

Is undue influence hard to prove?
Yes. Because manipulation happens behind closed doors, proof is almost always circumstantial and requires building a pattern of control, isolation, and opportunity.

Can multiple people contest the same will?
Yes. Multiple parties with standing can jointly or separately file objections against the same will in probate court.