Contesting a will means asking a probate court to invalidate some or all of a deceased person’s written instructions, and you can do it only if you have a direct financial stake in the outcome, a recognized legal ground, and the willingness to file within a deadline that is often startlingly short. Most contests settle before trial, but getting that far takes solid evidence, proper standing, and a petition that satisfies your probate court’s rules. Before you spend a dollar on a lawyer, three questions decide whether a challenge is even possible: do you have standing, do you have grounds, and are you still inside the window to file.
Do You Have Standing to File
Standing is the first gate, and courts enforce it strictly. You need a direct financial stake in the result, meaning your inheritance would increase if the will were thrown out, or you’d inherit something for the first time. Feeling that the will is unfair, or believing you knew the deceased person’s wishes better than the document reflects, doesn’t qualify.
The people who typically have standing fall into a few categories:
- Heirs-at-law — family members who would inherit under state intestacy rules if no valid will existed. If the current will cuts you out or shrinks your share compared to what intestacy would give you, you have standing.
- Beneficiaries of a prior will who received more under the earlier document than they do under the current one.
- Surviving spouses who have been disinherited or shortchanged. Most states have elective share laws that let a surviving spouse claim a fixed portion of the estate (traditionally around one-third) regardless of what the will says, and this statutory protection gives the spouse clear standing to challenge.
- Creditors of the estate, in limited circumstances where the will’s validity affects their ability to collect a legitimate debt.
If you don’t fit one of these categories, the case ends before it starts.
Legal Grounds a Court Will Accept
You can’t challenge a will because the outcome feels wrong. The court needs you to identify a specific legal deficiency in the document or in the circumstances of its creation. Successful challenges generally rely on one or more of the following.
- Lack of testamentary capacity. The person who made the will didn’t understand what they owned, who their natural heirs were, or what the document would do with their property. Dementia, severe illness, or medication effects around the time of signing are the most common evidence.
- Undue influence. Someone in a position of trust or power — a caregiver, adult child, financial advisor — pressured the person into provisions that served the influencer’s interests rather than the person’s own wishes. Courts look for a confidential relationship, suspicious circumstances, and a disproportionate benefit to the influencer.
- Fraud. The person was deceived about what they were signing, or someone lied about facts that shaped the will’s provisions (for example, telling the person that a child had died when they hadn’t).
- Forgery. The signature or the document itself was fabricated.
- Improper execution. The will wasn’t signed or witnessed according to state law. Most states require two disinterested witnesses who watch the signing and then sign the document themselves, though roughly half the states also recognize handwritten (“holographic”) wills that don’t need witnesses at all, provided the key provisions and signature are entirely in the person’s handwriting.
These grounds aren’t mutually exclusive. Petitions often pair lack of capacity with undue influence, since cognitive decline makes a person more vulnerable to manipulation and the two theories reinforce each other.
How Long You Have to File
This is where most people lose. The window to contest a will is narrower than people expect, and once it closes, no evidence will reopen it. Deadlines vary by state but generally fall between a few months and two years after the will is admitted to probate or after you receive formal notice of the estate proceedings. Some states give as little as 30 days after notice.
The clock usually starts when you receive the notice of administration, the formal letter from the estate’s personal representative informing you that probate has begun. If you weren’t properly notified, the deadline may not have started running, but proving improper notice is its own legal fight.
One exception matters. When the grounds involve fraud that wasn’t discoverable right away, many states let the deadline run from the date the fraud was discovered or should have been discovered through reasonable effort. Even then, there’s typically an outer time limit — often a few years — that applies no matter when you learned about the fraud. Check your state’s specific deadlines immediately. Waiting to think it over can cost you the entire case.
The No-Contest Clause Risk
Many wills include a no-contest clause, sometimes called an “in terrorem” clause, that strips any beneficiary who challenges the will of their inheritance. If you’re already named in the will, filing a contest could mean walking away with nothing.
Enforceability varies. Most states honor these clauses but interpret them narrowly, and several important exceptions exist:
- Probable cause. Some states, including California, won’t enforce the clause if you had reasonable evidence supporting your challenge, even if you ultimately lose. The test is whether a reasonable person would have concluded the challenge had a substantial likelihood of success.
- Fraud or forgery. Many states refuse to enforce no-contest clauses when the challenge alleges fraud, forgery, or other conduct that violates public policy.
- Statutory prohibition. A handful of states, including Florida, make no-contest clauses unenforceable entirely by statute.
If the will you’re considering challenging has one of these clauses, get a clear answer on your state’s rules before filing. The downside is concrete and immediate.
What You Have to Prove
As the challenger, you carry the burden of proof. The standard in most states is “preponderance of the evidence,” meaning you need to show it’s more likely than not that the will is invalid. That’s a lower bar than criminal cases, but it still requires real evidence, not family suspicion.
Undue influence often works differently. In many jurisdictions, if you can show that the alleged influencer had a confidential relationship with the person who made the will, played a role in creating or executing the document, and received a disproportionate benefit from it, the burden shifts. At that point, the other side has to prove the will wasn’t the product of undue influence. That shift matters enormously, because proving what happened in private conversations between a vulnerable person and their influencer is otherwise nearly impossible.
For lack of capacity, you’re trying to show that the person’s mental state at the specific time of signing was insufficient. Not that they had a diagnosis of dementia, and not that they were elderly. People with early-stage cognitive decline can have good days and bad days, and a will signed on a lucid day may be perfectly valid even if the person deteriorated significantly afterward.
Evidence You Need Before Filing
Judges have seen plenty of families who confuse personal disappointment with legal fraud. Before you file, you need concrete documentation supporting at least one recognized ground.
Medical Records
For capacity challenges, medical records from the period around the signing are the single most important evidence. You want cognitive testing results, diagnoses, medication lists (some drugs significantly impair judgment), and clinical notes about the person’s mental state.
Getting those records runs into HIPAA. Federal privacy rules protect a deceased person’s health information, and the estate’s personal representative — typically the executor or administrator — has the legal right to access those records and authorize their disclosure. If you’re not the personal representative, you’ll need either their cooperation or a court order.1HHS.gov. Health Information of Deceased Individuals
This trips people up constantly. The person contesting the will and the person serving as executor are often on opposite sides of the dispute, so if the executor won’t cooperate, you may have to petition the court for access before you can even build your case.
Witness Testimony
Neighbors, friends, doctors, clergy, and home aides who interacted with the deceased regularly can testify about mental state, daily functioning, and the relationship with the alleged influencer. The witnesses who signed the will itself are also critical, since they can describe the person’s demeanor and apparent understanding at the moment of signing.
Financial Records and Prior Wills
Bank statements, property records, and account histories help establish the full scope of the estate. Prior versions of the will show what changed and when, which matters especially for undue influence claims. A sudden shift in beneficiaries shortly after a new caregiver enters the picture tells a compelling story.
Filing the Petition and What Comes Next
The formal challenge starts with a petition (sometimes called an objection or caveat, depending on jurisdiction) filed with the probate court handling the estate, in the county where the deceased person lived or where the estate is being administered.
The petition has to identify you, explain your relationship to the deceased, state the specific grounds for your challenge, and describe the factual basis for those grounds. You’ll also need the decedent’s name and date of death, the date of the contested will, and the names and addresses of all beneficiaries and interested parties so the court can give everyone notice.
Vague allegations don’t survive. Writing “I believe there was undue influence” without saying who exerted it, how, and what evidence supports that belief gets a petition dismissed. Be specific about the facts you can prove.
Filing fees range from under $100 to several hundred dollars depending on the jurisdiction and the estate’s value. After filing, the petition and a court summons have to be formally served on the executor and all other interested parties.
Once everyone has been served and responded, the case enters discovery: document exchange, depositions under oath, and record requests to third parties like banks and medical providers. Discovery is where cases are actually won or lost; the trial is often a formality based on what the evidence revealed months earlier.
Many probate courts require or strongly encourage mediation before letting a case proceed to trial. Courts with mandatory mediation programs report settlement rates well above 50%, which fits what families actually want: a private resolution over a courtroom fight. If settlement fails, the case goes to a hearing or jury trial, where a judge (or in some states, a jury) decides whether the will stands, falls entirely, or is partially invalidated. From filing through trial, the process can take anywhere from several months to over two years.
What a Win Actually Gets You
If the court invalidates the entire will, the outcome depends on whether an earlier valid will exists. If one does, the court may admit that prior will and distribute the estate under its terms. If no earlier will exists, the estate passes under state intestacy law, which distributes assets to the closest surviving relatives in a set order.
Partial invalidation is also possible. If the court finds that undue influence tainted only certain provisions, say a single large bequest to the influencer, the rest of the will can remain intact. The invalidated portion typically gets redistributed under the will’s residuary clause (the catch-all for assets not specifically assigned) or, if there’s no residuary clause, under intestacy law.
A successful contest doesn’t guarantee you receive more than you would have under the original will. If the prior will or intestacy laws don’t favor you either, winning the legal battle may not change your financial outcome at all. Run that scenario before you file.
What a Will Contest Costs
Probate litigation is expensive. Attorney fees are the largest expense by far. Probate attorneys typically charge $200 to $500 per hour, and a contested case that goes through discovery and trial can generate hundreds of billable hours. Some attorneys take will contests on contingency (usually 25% to 40% of what you recover), but contingency arrangements are less common in probate than in personal injury because outcomes are harder to predict.
Beyond attorney fees, expect court filing fees, process server costs, expert witness fees (geriatric psychiatrists for capacity cases, forensic document examiners for forgery claims), deposition transcription costs, and potentially mediation fees. The executor’s legal fees often come out of the estate itself, which means a prolonged contest can shrink the total assets available for distribution, including your share if you win.
The honest math: if your potential recovery is modest and the estate isn’t large, litigation costs can easily exceed what you’d gain in a best-case outcome. The strongest candidates for a will contest are cases with substantial estates, clear evidence of wrongdoing, and a realistic path to a significantly better result.