Lawyer I Trust Guide · General U.S. information · Reviewed September 9, 2026
A will contest is a court proceeding challenging whether a document should be accepted as a valid will. Probate litigation is broader and can include disputes over fiduciary conduct, interpretation of estate documents, ownership of property, creditor claims, beneficiary rights, or how an estate should be administered.
Common grounds for challenging a will
Typical validity issues include lack of testamentary capacity, undue influence, fraud, duress, revocation, improper execution, or questions about whether the document actually reflects the deceased person’s intended will. The exact legal elements, burdens of proof, presumptions, and available defenses are matters of state law.
Who can bring a challenge?
A person generally must have a legally recognized interest that could be affected by the outcome. States define who qualifies as an interested person and impose deadlines for objections and contests. Those deadlines can be short, so a person who believes a will may be invalid should not assume there is unlimited time to investigate.
Not every dispute is a will contest
A disagreement about what a valid will means may be an interpretation dispute rather than a challenge to validity. Other probate litigation may involve removal of an executor, demands for information or accounting, allegations that property was misused, disputes over creditor claims, or competing claims that property belongs inside or outside the estate.
No-contest clauses
Some wills and trusts contain clauses designed to discourage beneficiaries from bringing challenges. Their enforceability varies significantly among states, and many jurisdictions recognize exceptions or construe them narrowly. A beneficiary should not assume either that such a clause is always enforceable or that it can safely be ignored.
Evidence commonly matters
Potential evidence can include the original estate-planning documents, prior wills, medical and financial records, communications, witness testimony, drafting-attorney files where discoverable, and evidence concerning relationships or transactions around the time the document was signed. What evidence is admissible and how it may be obtained depends on the jurisdiction and the particular claim.
Sources and further reading
- Cornell Legal Information Institute: Will Contest
- Cornell Legal Information Institute: No-Contest Clause
- Uniform Law Commission: Probate Code
Educational information only. This guide is not legal advice. Laws and procedures vary by jurisdiction.