To file a will dispute, you submit a formal petition (sometimes called a caveat or objection to probate) with the probate court handling the deceased person’s estate, identifying yourself, your legal standing, the other interested parties, and the specific grounds for your challenge. The court won’t hear you unless you qualify as an interested person and point to a recognized legal defect in the will. You also have to act fast: deadlines range from a few weeks to two years depending on the state, and missing yours ends the matter permanently.
Before you file anything, work through the questions below in order. Each one can end the inquiry on its own.
Do You Have Standing to Challenge the Will
Courts limit will contests to people with a direct financial stake in the outcome. Three groups almost always qualify.
Beneficiaries named in the current will who believe they should have received more, or that the document doesn’t reflect what the deceased actually intended. Heirs at law, meaning the people who would inherit under the state’s default rules if the will were thrown out entirely. That group typically includes the surviving spouse, children, and closest relatives, and they have standing even if the current will specifically cuts them out, because invalidating the document restores their right to inherit. And people named in an earlier version of the will who were dropped or reduced in the final version, whose interest lies in restoring the prior document.
If you don’t fit one of those categories, the challenge goes nowhere. A close friend, a longtime neighbor, or a charity that was not named in the will cannot contest it simply because they believe the deceased would have wanted something different.
Do You Have a Recognized Legal Ground
Standing gets you in the door. You still need a legal basis the court will accept. Four grounds dominate will contests.
Lack of Testamentary Capacity
The testator had to understand, at the moment of signing, roughly what they owned, who their close family members were, what the will would do with their property, and how those pieces fit into a coherent plan. Advanced dementia, serious psychiatric illness, or other cognitive impairment that blocked that understanding can invalidate the will.
The bar is lower than people expect. Courts have upheld wills signed by people with early-stage Alzheimer’s and mild cognitive impairment, because what matters is whether the testator had a lucid interval when they signed. Medical records from the period around execution are usually the deciding evidence.
Undue Influence
Undue influence means someone pressured the testator so heavily that the will reflects the influencer’s wishes rather than the testator’s own. A caregiver, adult child, or other trusted person isolates the testator, controls their access to information, and redirects the inheritance.
Courts look for a close or dependent relationship between the testator and the alleged influencer, that person’s active involvement in creating or changing the will, and a result that disproportionately favors them. When all three are present, many states apply a presumption of undue influence that shifts the burden to the will’s defenders to prove the document is legitimate. A sudden, unexplained change in beneficiaries shortly before death is the classic red flag.
Fraud or Forgery
Fraud covers cases where the testator was tricked into signing, for example being told the document was a power of attorney, or being lied to about a family member to get that person cut out. Forgery covers faked signatures and physical alteration of the pages after signing. Both can void the will and can also expose the person responsible to criminal liability.
Improper Execution
Every state sets formal requirements for how a will must be signed, and a defect can void the document. The model Uniform Probate Code requires 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 either the signing itself or the testator’s acknowledgment of the signature. Missing or disqualified witnesses are the usual problem.
One important exception: roughly half the states recognize holographic wills, which are handwritten and need no witnesses if the signature and the material portions are in the testator’s own hand. A challenge based solely on the lack of witnesses will fail against a valid holographic will in those states.
How Long Do You Have to File
Every state sets a deadline, and they vary widely. Some give you only a few weeks after formal notice of probate; others allow up to two years. The clock usually starts when the will is admitted to probate or when you receive official notice, depending on the jurisdiction.
Fraud-based challenges sometimes get more time, because the limitations period often doesn’t begin until the fraud was discovered or reasonably should have been. If you learn years later that a signature was forged, you may still have a window, but the exception is narrow and you’ll need to explain the delay.
Courts treat these deadlines as hard cutoffs, not guidelines. If you suspect a will is invalid, finding your state’s specific deadline should be your first move.
Check for a No-Contest Clause First
Before filing, read the will for a no-contest clause (sometimes called an “in terrorem” clause). These provisions say that any beneficiary who challenges the will forfeits their inheritance. If you’re set to receive $200,000 and your contest fails, the clause can cut your share to zero.
Enforcement varies. Most states enforce no-contest clauses, but many recognize a “probable cause” exception: if you had reasonable grounds to believe the contest would succeed, you keep your inheritance even if you lose. Evidence of forgery or undue influence typically meets that standard. A handful of states, including Florida, refuse to enforce no-contest clauses at all.
The calculation is simple at the extremes. If the will leaves you nothing, the clause has no teeth. If it leaves you a meaningful amount, talk to a probate attorney about your state’s rule before you file.
Gather Your Evidence Before Filing
The strength of your evidence determines whether your case survives the initial hearing, let alone wins at trial.
Get a certified copy of the contested will from the probate court clerk. That gives you the baseline document to examine for signature irregularities, witness issues, and physical signs of alteration. Pull the testator’s medical records from the period around the will’s execution, including primary care, specialists, hospital records, and any cognitive assessments. Those are the backbone of a capacity challenge.
Collect communications that show the testator’s state of mind and relationships: emails, texts, letters, voicemails. Look for isolation, pressure, or sudden shifts in attitudes toward family. Build a list of people who interacted with the testator regularly and can speak to their mental clarity and independence.
Two kinds of expert witnesses show up repeatedly. Forensic document examiners analyze handwriting, compare inks, examine paper and staple holes, and look for substituted pages or added text. Geriatric psychiatrists and neuropsychologists perform retrospective evaluations of the testator’s capacity on the signing date, drawing on medical records and witness accounts. Experts are expensive, but a finding that inks don’t match across pages, or an opinion that documented Alzheimer’s progression made capacity impossible on the date in question, carries far more weight than family impressions.
Filing the Petition
With evidence assembled, the formal process starts by filing a petition with the probate court clerk. The petition identifies you, explains your standing, names the other interested parties, and states the specific legal grounds. Filing fees run from under $100 to several hundred dollars depending on the court and the estate.
After filing, you must serve legal notice on every interested party, including all named beneficiaries and heirs at law. Service is usually handled through a process server or certified mail to create a verifiable record. The court then schedules an initial hearing to decide whether your petition states a claim worth litigating. If the petition is accepted, asset distribution freezes and the matter becomes a contested probate case. Some courts appoint a neutral administrator to manage estate assets while the dispute plays out.
What Happens After You File
Contested probate cases go through discovery much like other civil litigation. Both sides exchange information about witnesses and evidence through depositions, written interrogatories answered under oath, and requests for documents such as financial records, medical files, and correspondence. Discovery often shifts the balance enough that one side pushes for settlement.
Many probate courts encourage or order mediation before trial. A neutral third party helps the sides negotiate a compromise, which is faster and considerably cheaper than trial. Mediation also allows creative solutions a judge cannot impose: splitting a disputed asset, payment schedules, swapping assets, restructuring distributions. An agreement submitted to the probate court for approval becomes a binding order.
If the case reaches trial, a majority of states grant a statutory right to a jury trial in will contests, though parties can waive it. Some states don’t allow jury trials in will contests at all, leaving the decision to the probate judge. Contested cases that go the full distance can drag on for months or years, which is one reason most settle first.
Burden of Proof and Costs
In most will contests the challenger carries the burden of proof by a preponderance of the evidence, meaning you have to show it is more likely than not that the will is invalid. The major exception is undue influence in states that apply the presumption described above: once you establish the confidential relationship, active involvement, and unfair benefit, the burden flips to the will’s defenders to prove the testator acted freely.
Costs catch many people off guard. Filing fees are the smallest piece. Probate litigators typically charge hourly rather than on contingency, because a will contest redistributes existing assets rather than recovering damages. Rates commonly fall in the $200 to $500 per hour range for contested estate matters. A dispute that settles in mediation might cost a few thousand dollars in legal fees. A case that runs through discovery and trial can reach tens of thousands. Expert witness fees add more. Each side generally pays its own attorney fees and costs unless the court orders otherwise, so losing a contest means you are out both the inheritance you hoped for and the money you spent chasing it. That financial exposure, combined with any no-contest clause risk, is why the decision to file deserves a hard-nosed look at your evidence, your likely costs, and what you actually stand to gain.