To contest a will, you file a formal petition in the probate court handling the estate, within your state’s deadline, arguing on a recognized legal ground that the document is invalid. The person challenging carries the burden of proof, most contests settle before trial, and the process can be expensive enough that the potential recovery has to justify the cost. Here is how the process actually works, who is allowed to bring a challenge, and what you should weigh before filing.
Who Is Allowed to Contest
Not everyone with an opinion about the will can challenge it. You need “standing,” which means a direct financial stake in how the estate is distributed. If throwing out the will wouldn’t change what you receive, the court won’t hear you. Three groups usually qualify:
- Heirs at law: relatives who would inherit under the state’s default rules if there were no will. Typically a surviving spouse, children, parents, or siblings.
- Beneficiaries of a prior will: if an earlier version gave you more and a later version cut you down, you can challenge the newer document.
- Creditors: someone the deceased owed money to may challenge the will if its terms would keep the debt from being paid.
Surviving spouses have a separate option worth knowing about. In most states, a spouse cannot be fully disinherited. Probate law in a majority of states gives a surviving spouse the right to claim an “elective share,” typically one-third to one-half of the estate, regardless of what the will says. That claim is a distinct legal mechanism, not a will contest, so a disinherited spouse doesn’t have to prove the will is invalid to receive it. It is often faster and more certain than a contest. Deadlines are strict, though, so a spouse considering this route should act quickly.
The Deadline for Filing
Every state sets a deadline for contesting a will, and missing it almost always ends the right to challenge permanently. The window ranges from as little as three months to as long as two years depending on the state. When the clock starts also varies: some states count from the date of death, some from the date the will is admitted to probate, and some from the date you receive formal notice that administration has begun.
If you are seriously considering a challenge, find out your specific deadline immediately. Waiting until you feel ready, or until assets start being distributed, is how viable claims get forfeited. A probate attorney in the state where the will is being administered can confirm exactly what applies to your situation.
The Legal Grounds You Can Use
Filing on its own is not enough. Courts start from a presumption that a properly signed will is valid, so you need a recognized legal basis and evidence to support it. The accepted grounds are narrower than most people expect.
Lack of Testamentary Capacity
The testator must have been mentally competent when they signed. The bar is actually fairly low: they needed to understand the general nature and extent of their property, know who their close relatives and natural heirs were, understand that the document would distribute their property after death, and connect those elements into a coherent plan.1Legal Information Institute. Testamentary Capacity
The critical phrase is “when they signed.” A testator with dementia may have good days and bad days, and a will signed during a lucid interval can be valid even if the person was impaired at other times. Medical records, physician testimony, and observations from people who saw the testator around the signing date are the most persuasive evidence.
Undue Influence
Undue influence means someone in a position of trust or authority pressured the testator into a will that doesn’t reflect their real wishes. It goes beyond ordinary persuasion or nagging. The pressure has to be severe enough that the influencer’s desires essentially replaced the testator’s own.
The classic pattern involves a caregiver, relative, or adviser who isolates the testator, controls access to information, and benefits disproportionately under the will. Warning signs include a sudden unexplained change late in life that favors one person, unusual dependence on that person, or the beneficiary being involved in drafting or arranging the signing. Undue influence usually happens in private, so cases tend to rely on circumstantial evidence and patterns of behavior rather than direct proof.
Improper Execution
A will must meet specific formalities, and small procedural errors can invalidate the whole document. Most states require the will to be in writing, signed by the testator (or by someone else at the testator’s direction and in their presence), and signed by at least two witnesses who observed the signing or the testator’s acknowledgment of the signature.2Legal Information Institute. Wills Signature Requirement
Some states allow notarization as an alternative to witnesses. Rules on whether a witness can also be a beneficiary vary by state, so a will where a major beneficiary served as a witness is worth scrutinizing but isn’t automatically void everywhere.
Fraud
Fraud takes two forms. One is deceiving the testator about facts that shape the will’s contents, such as telling a parent their child has abandoned them so the parent disinherits the child. The other is tricking the testator about the document itself, such as presenting a will as a power of attorney. Fraud also covers outright forgery of the signature and unauthorized alterations after signing.
A Newer Valid Will Exists
A will can be challenged on the ground that a later valid will supersedes it. The later document may expressly revoke all prior wills (standard language in most wills) or impliedly revoke earlier terms by containing provisions that conflict. If the conflict is only partial, courts may read the two together and revoke only the inconsistent parts.
Check for a No-Contest Clause First
Before filing anything, look at whether the will contains a no-contest clause, sometimes called an “in terrorem” clause. It states that any beneficiary who challenges the will and loses forfeits whatever they were set to inherit. If you’re currently in the will for $100,000 and you contest unsuccessfully, you could end up with nothing.
Most states enforce these clauses, but they are generally disfavored and subject to important exceptions.3Legal Information Institute. No-Contest Clause A significant number of states recognize a “probable cause” exception: if you had a genuine, reasonable basis to believe the will was invalid, the court won’t enforce the penalty even if you lose. A few states enforce the clauses strictly regardless of good faith, which changes the risk calculation entirely.
The clause only threatens people who are already named in the will. If you’re an heir at law who was left out completely, it has no leverage over you because you have nothing to lose under its terms.
Building the Case Before You File
The strength of a contest depends almost entirely on the evidence you can gather before filing. Start with a copy of the will and the death certificate. If capacity is at issue, request the testator’s medical records from the period around the signing. Financial records can reveal suspicious transactions, like large gifts to a suspected influencer or sudden changes in account ownership.
Track down any earlier versions of the will. A prior document telling a different story about the testator’s wishes is powerful, especially when a dramatic change happened late in life or shortly after a new person appeared. Identify people who were present at the signing or spent time with the testator during that period. Witnesses who can speak to mental state, relationships, and circumstances around the signing matter more than almost anything else.
Consulting a probate litigation attorney at this stage is worth the cost even if you decide not to file. An experienced attorney can tell you honestly whether your grounds are strong enough to justify the expense and risk, which is an assessment most people cannot make on their own.
How the Process Runs
A will contest begins with a formal petition (sometimes called a caveat or objection) filed in the probate court handling the estate. The petition identifies you, your relationship to the deceased, your financial interest, and the specific legal grounds. Vague objections don’t survive. You have to lay out enough factual detail to show a legitimate dispute exists.
After filing, you have to notify all interested parties through formal service of process: the executor or personal representative, everyone named in the will, and any heirs at law who would inherit if the will were invalidated. Missing someone can delay the case or get your petition dismissed.
The case then enters discovery. Both sides exchange written questions answered under oath, request documents like medical and financial records, and take depositions where witnesses give sworn testimony that attorneys can question in real time. Discovery is where contests are built or fall apart. A challenger who can’t produce meaningful evidence during this phase is in serious trouble.
Most contests never reach a trial. Estimates suggest roughly 90 to 97 percent of litigated probate cases settle out of court. Mediation, where a neutral third party helps both sides negotiate, is common. It costs far less than trial, preserves what remains of family relationships, and gives both sides more control than a judge’s ruling would. Courts in many jurisdictions encourage or require mediation before allowing a probate dispute to proceed to trial.
If settlement fails, the case goes to a hearing or full trial. You bear the burden of proving your specific grounds. The will’s proponent has to show it was properly executed, but you have to prove claims like lack of capacity, undue influence, or fraud. A judge or jury then decides whether the will stands, is partially invalidated, or is thrown out entirely.
What It Costs
Contests are expensive, and knowing the numbers before filing matters. Court filing fees for a probate petition generally run from around $50 to over $1,000 depending on jurisdiction and estate size. Filing fees are the smallest piece. Attorney fees for probate litigation typically run $200 to $500 per hour, and a contested case that goes through discovery and trial can easily generate tens of thousands of dollars in legal bills. Some attorneys handle will contests on contingency, taking a percentage of any recovery instead of hourly fees, but this arrangement is less common in probate than in other types of litigation.
Expert witnesses add to the cost. Capacity challenges frequently require testimony from medical professionals, and undue influence cases may need forensic accountants or psychologists. The economics of a contest only make sense when the potential recovery clearly exceeds the likely costs, which an attorney should help you evaluate honestly before you file.
What Happens if the Will Is Invalidated
If the court throws out the will, the estate doesn’t disappear. What happens next depends on what other documents exist. If there is a prior valid will, the estate is distributed under that earlier document. If no prior will exists, the estate passes under the state’s intestate succession laws, which follow a fixed hierarchy: a surviving spouse typically takes the largest share, then children, then parents, then more distant relatives. If no living relatives can be identified at all, the property ultimately goes to the state.
Partial invalidation is also possible. A court can strike specific provisions, such as a single bequest made under undue influence, while leaving the rest of the will intact. Only the invalidated portions are redistributed, and the remaining provisions are carried out as written.