Summary. Estate and trust disputes look like ordinary civil litigation and behave differently in ways that matter from the first filing. The claims are largely fixed by statute, the deadlines are short and often jurisdictional, the key witness is dead, and evidentiary rules designed for exactly this situation constrain what the survivors may testify to. The two dominant theories — lack of capacity and undue influence — are frequently pleaded together and proved very differently, with undue influence turning on a burden-shifting presumption that arises from relationship and circumstance rather than from direct evidence. This article covers the grounds, who may sue and by when, how no-contest clauses actually operate, the fiduciary claims that run alongside a contest, and the drafting and execution practices that prevent most of it.

The distinguishing feature of this practice is that the most important witness cannot be called.

Everything else follows from that. The evidence is circumstantial almost by definition. The documents — medical records, bank statements, the drafting attorney's file, the changed beneficiary designation — carry weight that they would not carry in a case where the principal actor could explain them. Doctrines have grown up specifically to handle proof problems that would otherwise be insurmountable, most notably the presumption of undue influence, which exists because the influence that matters is exercised in private between two people, one of whom is now dead.

These cases are also unusually bitter. The parties are family, the subject matter is a parent's love expressed in dollars, and the dispute frequently ratifies a grievance that predates the estate by forty years. Counsel who treat them as valuation exercises misjudge both the settlement dynamics and the client.

Standing and timing

Who may contest

Standing generally requires a pecuniary interest that would be affected by the outcome. That means:

  • An heir at law who would take by intestacy if the will fails.
  • A beneficiary under a prior will who would take more under it.
  • A beneficiary under the challenged instrument whose share would increase if a later amendment fell.
  • A creditor in limited circumstances.

A person who takes nothing under either the challenged instrument or the alternative has no standing, however wronged they feel. A disinherited child of a testator whose prior will also disinherited them may lack standing entirely unless intestacy would give them a share.

For trusts, standing extends to qualified beneficiaries as defined in Uniform Trust Code § 103, and in most states a contingent remainder beneficiary may bring an action.

The deadlines

This is where cases are lost before they begin.

Will contest periods are short and are frequently jurisdictional rather than merely procedural. Depending on the state, the period may run from the date of the order admitting the will to probate, from the mailing of notice, or from the appointment of a personal representative, and periods of three, four, or six months are common. Some states permit a longer period for a beneficiary who received no notice.

For trusts, Uniform Trust Code § 604 provides a period of the earlier of a stated number of years after the settlor's death or a much shorter period — commonly 120 days — after the trustee sends a notice informing the beneficiary of the trust's existence, of the trustee's identity, and of the time allowed to contest. A trustee who sends the statutory notice starts a very short clock, and sending it promptly is standard defensive practice.

Do not compute these from memory. Read the statute, and calendar backward from the earliest arguable trigger.

Lack of testamentary capacity

The standard

Testamentary capacity is a low threshold, materially lower than the capacity required to make a contract or a gift. The classic formulation requires that at the time of execution the testator understood:

  1. The nature and extent of their property;
  2. The natural objects of their bounty — who their family members are;
  3. The nature of the testamentary act, that they were disposing of property at death; and
  4. How these elements relate to form an orderly plan of disposition.

The Restatement (Third) of Property: Wills and Other Donative Transfers § 8.1 states essentially this test.

Three points matter enormously in practice.

Capacity is measured at the moment of execution. A testator with dementia may have lucid intervals, and a will executed during one is valid. Evidence of incapacity a month before and a month after does not establish incapacity on the day, though it certainly helps.

A diagnosis is not incapacity. Alzheimer's disease, a guardianship, heavy medication, and hospitalization are all evidence, none dispositive. Conversely, the absence of a diagnosis proves little.

The presumption favors capacity. The proponent generally must prove due execution; the contestant bears the burden on incapacity in most states.

Insane delusion

A distinct doctrine: a testator with general capacity may nonetheless lack capacity as to a particular disposition if it resulted from an insane delusion — a false belief to which the testator adheres against all evidence and reason, which materially affected the disposition. The classic case is a testator who disinherits a child based on a fixed, irrational belief in the child's infidelity or hostility.

The requirements are strict: the belief must be one no rational person could hold on the evidence available, and there must be a causal connection between the delusion and the challenged provision. A merely mistaken or unfair belief is not a delusion.

Undue influence

This is the theory that wins cases, and its mechanics are worth understanding precisely.

The substantive standard

Undue influence is influence that overcomes the testator's free will and substitutes the influencer's intent for the testator's. Mere persuasion, affection, importunity, or the natural influence of a close relationship is not enough. Restatement § 8.3 requires that the wrongdoer exert influence overcoming the donor's free will and causing the donor to make a donative transfer they would not otherwise have made.

Proving that directly is nearly impossible. Hence the presumption.

The burden-shifting presumption

Most states shift the burden to the beneficiary on a showing of some combination of:

  1. A confidential or fiduciary relationship between the testator and the alleged influencer — a caregiver, an agent under a power of attorney, a trustee, a family member on whom the testator depended, sometimes an attorney or clergy.
  2. The alleged influencer's active participation in procuring the instrument — arranging the appointment, selecting the attorney, transmitting instructions, being present at execution, paying the fee.
  3. Suspicious circumstances, or in some formulations an undue benefit to the influencer.

Where the presumption arises, the burden shifts to the proponent to show the absence of undue influence, often by clear and convincing evidence. That shift is frequently outcome-determinative, and much of the litigation is about whether it applies at all.

The suspicious circumstances courts actually credit

  • The testator was isolated — the influencer controlled visitors, mail, and telephone.
  • A sudden change in a long-standing dispositional pattern, particularly late in life or during illness.
  • The beneficiary selected and instructed the drafting attorney, and the testator never met with counsel alone.
  • The testator's physical or mental weakness at the relevant time.
  • Secrecy or haste in execution.
  • The instrument was executed at a hospital or facility, or by a notary the beneficiary brought.
  • A disposition that is unnatural — an entire estate to a recent acquaintance or paid caregiver, excluding children.
  • Contemporaneous transfers — the deed, the joint account, the beneficiary designation changed in the same period.

No single factor decides. The pattern does.

Statutory presumptions

Several states go further and create statutory presumptions or outright disqualifications for transfers to a care custodian, the drafting attorney, or a person in a fiduciary relationship, unless an independent attorney provides a certificate of independent review. California's provisions at Cal. Prob. Code §§ 21360–21392 are the most developed example. These statutes short-circuit the common-law analysis entirely and should always be checked first.

The other grounds

Lack of due execution. The formalities — signature, witnesses, sometimes a self-proving affidavit — are prescribed by statute and their absence invalidates the will. Uniform Probate Code § 2-502 states the modern requirements; § 2-503 provides a harmless error rule excusing defects where clear and convincing evidence shows the decedent intended the document as their will, adopted in a growing number of states. Holographic wills are recognized in about half the states under § 2-502(b).

Fraud. Fraud in the execution — the testator was deceived about the nature of the document. Fraud in the inducement — the testator knew what they were signing but was deceived about facts material to the disposition. Both require the ordinary fraud elements plus causation.

Revocation. The will was revoked by a later instrument, by physical act, or by operation of law. Divorce revokes provisions for a former spouse in most states under UPC § 2-804.

Mistake. Traditionally not a ground for setting aside a will, though UPC § 2-805 permits reformation of a will to conform to the testator's intent where clear and convincing evidence establishes both the intent and that the terms were affected by a mistake of fact or law. This is a significant modern departure from the plain meaning rule.

Tortious interference with an expected inheritance. A tort claim, recognized in a majority of states and rejected in a significant minority, permitting recovery against a person who intentionally interfered with an expected inheritance through independently tortious conduct. Its advantages are a longer limitations period, availability of punitive damages, and a jury. Its principal limitation is that most states require the plaintiff to have exhausted probate remedies first, or bar the claim entirely where a probate contest was available. The Supreme Court's decision in Marshall v. Marshall, 547 U.S. 293 (2006), confirmed that the probate exception to federal jurisdiction does not bar such a claim in federal court.

Elective share and pretermitted heirs. Not contests, but claims that reduce the estate. A surviving spouse may elect against the will under UPC §§ 2-201 to 2-214, taking a statutory share — in the UPC's accrual system, a percentage of the augmented estate keyed to the length of the marriage. A child born or adopted after execution and not provided for may take an intestate share under UPC § 2-302. An omitted spouse has parallel protection under § 2-301.

Slayer statutes. A person who feloniously and intentionally kills the decedent forfeits any benefit, under UPC § 2-803 and analogues in every state, with the property passing as if the killer predeceased. A criminal conviction is conclusive; acquittal is not, and the probate court may find the fact by a preponderance.

No-contest clauses

The clause says that a beneficiary who contests the instrument forfeits their bequest. Its function is deterrence, and its enforceability is one of the most jurisdiction-dependent questions in the field.

The three positions

Enforceable with a probable cause exception. The majority approach, stated in UPC § 3-905 and § 2-517 and in Restatement (Third) of Property § 8.5: the clause is unenforceable if probable cause existed for instituting the proceeding. Probable cause generally means evidence that would lead a reasonable person, properly informed and advised, to conclude there is a substantial likelihood the contest will succeed.

Enforceable strictly, with narrow or no exceptions. A minority.

Unenforceable entirely. Florida voids no-contest clauses in wills and trusts by statute, Fla. Stat. § 732.517 and § 736.1108, as does Indiana.

California occupies a middle position under Cal. Prob. Code §§ 21310–21315, enforcing a clause only against a direct contest brought without probable cause, and, where the instrument expressly so provides, against a pleading challenging a transfer of property or a creditor's claim. Other proceedings — a petition for instructions, a challenge to a fiduciary's conduct, a request for an accounting — do not trigger forfeiture.

What practitioners need to know

  • A clause is meaningless against a beneficiary who takes nothing. Deterrence requires something to forfeit. Drafters who intend deterrence must leave a bequest large enough that the beneficiary will not risk it.
  • Safe harbor petitions are available in some states, allowing a beneficiary to ask the court in advance whether a proposed filing would trigger the clause. Where available, use them.
  • Not every filing is a contest. Requesting an accounting, seeking removal of a trustee, petitioning for construction of an ambiguous provision, or asserting a creditor's claim are generally outside the clause unless the instrument says otherwise.
  • The clause does not apply to a personal representative's own conduct, and cannot be used to insulate a fiduciary from review.

The fiduciary claims that run alongside

Many disputes are not really about the instrument. They are about what the fiduciary did afterward, and those claims are often stronger.

Breach of trust. Uniform Trust Code § 1001 provides the remedies: compelling performance, enjoining a breach, compelling redress by payment of money or restoration, ordering an accounting, appointing a special fiduciary, suspending or removing the trustee, reducing or denying compensation, and tracing trust property. Section 1002 measures damages as the greater of the loss to the trust or the profit the trustee made.

Duty of loyalty, UTC § 802. Self-dealing is voidable by a beneficiary without further proof of unfairness — the no further inquiry rule — subject to exceptions for transactions authorized by the terms of the trust, approved by the court, or consented to by the beneficiary after full disclosure.

Duty of impartiality, § 803, which generates most of the litigation between income and remainder beneficiaries.

Duty to inform and report, § 813. The trustee must keep qualified beneficiaries reasonably informed and, on request, furnish a report of assets, liabilities, receipts, and disbursements. Failure to account is the most common breach and the easiest to prove.

Prudent investment, under the Uniform Prudent Investor Act §§ 2–9: a portfolio standard, a duty to diversify unless special circumstances apply, a duty to incur only appropriate and reasonable costs, and permission to delegate with proper care in selection and monitoring.

Elder financial abuse statutes. Many states provide enhanced remedies — treble damages, attorney's fees, and in some states a presumption — for financial abuse of an elder or dependent adult. These claims frequently reach conduct predating death, have longer limitations periods, and are not subject to no-contest clauses. Where the facts support one, it is often the strongest claim in the case.

The accounting proceeding is the practical vehicle for most of this. A beneficiary petitions to compel an accounting, the fiduciary files, and the beneficiary objects to specific items. It shifts the burden onto the fiduciary to justify each transaction, and it is far cheaper than a plenary action.

Proving the case

The documents that decide it

The drafting attorney's file. Intake notes, correspondence, drafts showing what changed and when, the billing records showing who called and who attended. Whether the attorney-client privilege survives the client's death is governed in most states by a testamentary exception, under which the privilege does not bar disclosure in litigation among parties claiming through the decedent. Swidler & Berlin v. United States, 524 U.S. 399 (1998), confirmed that the privilege generally survives death but expressly noted this exception. Get the file early.

Medical records for the relevant period — not only the diagnosis but the clinical notes, cognitive screening scores, and nursing observations from the days around execution.

Financial records. Bank and brokerage statements showing transfers, new joint accounts, changed beneficiary designations, and unusual withdrawals. Patterns of small transfers preceding a large one are highly probative.

Care records. Facility notes on visitors, phone calls, and the decedent's orientation.

The decedent's own writings. Letters, emails, journals, and increasingly text messages.

Prior instruments and the drafting files behind them, to establish the dispositional pattern the challenged instrument departs from.

Witnesses and the Dead Man's Statute

The attesting witnesses and the notary matter, and their memories are usually poor.

Most importantly, roughly half the states retain some version of a Dead Man's Statute, barring an interested party from testifying about a transaction or communication with the decedent. These statutes are technical, vary widely, and are frequently waived — by the opposing party's own introduction of such evidence, by taking the witness's deposition on the subject, or by failing to object. Identify the rule in the forum at the outset, because it determines whether the client can testify at all about the conversation the entire case turns on.

Federal courts apply the state rule in diversity cases under Fed. R. Evid. 601.

Experts

Forensic psychiatrists or geriatricians who perform a retrospective capacity assessment from the records. Their credibility depends on grounding conclusions in contemporaneous documentation rather than in the litigation narrative.

Questioned document examiners where the signature is disputed.

Forensic accountants to trace transfers and reconstruct the estate.

Settlement, and why most of these cases settle

Estate disputes settle at a very high rate, for reasons specific to the field.

The estate pays for both sides, functionally. Fiduciary defense costs typically come from estate assets, and a successful contestant's fees sometimes do too. Every dollar spent reduces what anyone receives.

Delay has a cost everyone feels. Distribution is suspended while the contest is pending. Beneficiaries who need money now are motivated.

Outcomes are genuinely uncertain. Undue influence turns on inference, and juries are unpredictable in a way that makes both sides risk-averse.

The no-contest clause creates asymmetric risk for a contestant, and a settlement avoids the forfeiture question entirely.

Non-monetary terms matter. Family disputes settle on things a court cannot order: an apology, division of specific personal property, an agreement about a burial plot or a family home, or a structure that lets everyone describe the outcome as vindication.

Mechanisms worth knowing: a family settlement agreement, enforceable in most states and often approvable by the probate court in a manner binding on minors and unborn beneficiaries with a guardian ad litem; non-judicial settlement agreements under Uniform Trust Code § 111, which permit interested persons to resolve any matter involving a trust so long as the terms could be properly approved by the court; and mediation, which many probate courts now require.

Preventing it: what drafters should do

Most of this litigation is preventable, and the preventive measures are cheap relative to the dispute.

Meet the client alone. No exceptions, ever, and particularly not for the child who made the appointment and drove the parent to the office. Document that you did.

Take independent instructions. Ask open questions and record the answers in the client's own words. A file showing the client explained their reasons is worth more than any affidavit.

Assess and document capacity contemporaneously. Note orientation, understanding of the estate's extent, identification of family members, and the reasons for the plan. A brief memorandum written the same day is powerful evidence years later.

Consider a physician's evaluation where age, illness, or a substantial change makes capacity foreseeable as an issue — and understand it must be contemporaneous to be useful.

Explain unnatural dispositions in the file, not in the will. Reasons stated in the instrument itself become the target of the contest and can support a defamation claim in rare cases. Reasons in the drafting file are available if needed and invisible if not.

Use independent witnesses, and never a beneficiary. Many states purge or void a bequest to an attesting witness.

Use the statutory certificate of independent review where a care custodian or drafting attorney is a beneficiary and the state provides one.

Consider video with real caution. A recording of a fluent, engaged client is excellent evidence. A recording of a tired eighty-eight-year-old fumbling a question is a gift to the contestant, and you cannot know in advance which you will get.

Consider lifetime action. A revocable trust funded and administered during life, with the settlor demonstrably participating, is harder to attack than a will signed once. Similarly, a lifetime gift completed and enjoyed for years is a difficult target.

Use the no-contest clause deliberately, with a bequest large enough to deter, and confirm its enforceability in the governing jurisdiction.

Trigger the contest period. For trusts, sending the § 604 notice promptly after death starts a short clock and is standard defensive practice.

Primary authority

  • Uniform Probate Code §§ 2-501 to 2-517 — capacity, execution formalities, harmless error, holographic wills, revocation, and penalty clauses; § 2-302 (pretermitted children); §§ 2-201 to 2-214 (elective share); § 2-803 (slayer); § 2-804 (revocation on divorce); § 2-805 (reformation); § 3-905 (penalty clause for contest).
  • Uniform Trust Code § 103 (qualified beneficiary), § 111 (non-judicial settlement agreements), § 406 (voidable for undue influence, duress, or fraud), § 601 (capacity to create a revocable trust), § 604 (limitation on contest), § 802 (loyalty), § 803 (impartiality), § 813 (duty to inform and report), § 1001 (remedies for breach), and § 1002 (damages).
  • Uniform Prudent Investor Act §§ 2–9 — the portfolio standard, diversification, costs, and delegation.
  • Restatement (Third) of Property: Wills and Other Donative Transfers §§ 8.1, 8.3, and 8.5 — capacity, undue influence, and no-contest clauses.
  • Cal. Prob. Code §§ 21310–21315 — the limited enforceability of no-contest clauses; §§ 21360–21392 — presumptions of disqualification for care custodians, drafters, and fiduciaries.
  • Fla. Stat. § 732.517 and § 736.1108 — no-contest clauses void.
  • Fed. R. Evid. 601 — state competency rules, including Dead Man's Statutes, apply in diversity.
  • Swidler & Berlin v. United States, 524 U.S. 399 (1998) — the privilege survives death, subject to the testamentary exception.
  • Marshall v. Marshall, 547 U.S. 293 (2006) — the narrow scope of the probate exception to federal jurisdiction.
  • State elder financial abuse statutes — enhanced damages and fees, and frequently the strongest claim available.

The non-probate estate, where the money actually is

A contest that focuses on the will frequently fights over the smallest pot in the case.

For most decedents the substantial assets pass outside probate: retirement accounts and life insurance by beneficiary designation, joint accounts by survivorship, transfer-on-death securities registrations and deeds, and assets titled in a revocable trust. A will contest that succeeds in setting aside a will may change the disposition of a checking account and a car, while a million dollars in an IRA passes to whomever the form named.

Attacking those transfers requires different theories and different defendants.

Beneficiary designations may be challenged on the same grounds as a will — capacity, undue influence, fraud, forgery — but the action is typically against the recipient rather than the estate, and the custodian will usually interplead. Where the plan is governed by ERISA, preemption is a serious obstacle: Egelhoff v. Egelhoff, 532 U.S. 141 (2001), held that a state statute automatically revoking a spousal designation on divorce was preempted, and Kennedy v. Plan Administrator for DuPont Savings & Investment Plan, 555 U.S. 285 (2009), required the administrator to pay according to plan documents notwithstanding a waiver in a divorce decree. Kennedy left open whether the recipient may be sued after payment, and several courts have permitted such a post-distribution claim.

Joint accounts are the most litigated non-probate asset. Most states presume that a joint account with right of survivorship passes to the survivor, and the presumption may be rebutted by clear and convincing evidence that the decedent intended only a convenience account. Uniform Probate Code § 6-211 provides that during life the account belongs to the parties in proportion to their net contributions, which is a useful framing: a child added to a parent's account who contributed nothing has an uphill argument on lifetime ownership, and the fight is about survivorship intent.

Transfer-on-death deeds, now authorized in a majority of states under the Uniform Real Property Transfer on Death Act, are revocable during life and are subject to the same capacity and influence challenges. They are also, in several states, reachable by creditors of the estate.

Lifetime gifts and transfers may be attacked as the product of undue influence, and here the presumption operates with even greater force, because the standard for capacity to make a lifetime gift is higher than testamentary capacity in most states.

The practical instruction for counsel evaluating a case: pull the asset schedule before assessing the theories. Determine what passes under the will, what passes under the trust, and what passes by designation or survivorship. The strongest ground for contesting a will is irrelevant if the will governs nothing.

Evaluating a case at intake

A prospective contestant arrives convinced of a wrong. The following sequence separates the cases worth taking from the ones that will consume a year and produce nothing.

What does the client actually receive, and what would they receive if the challenge succeeded? Compute the delta first. If the alternative is intestacy and the client is one of six children, the recovery may not justify the fee. If a prior instrument gave them substantially more, the case has value.

Is the client within the contest period? Ask when notice was received and get the document. This question ends more consultations than any other, and it should be asked in the first ten minutes.

What is the asset schedule? Probate, trust, and non-probate, separately. See above.

Is there a no-contest clause, and what does the forum do with it? Model the downside: what the client loses if the contest fails and the clause is enforced.

What was the dispositional pattern before? Obtain every prior will and trust. A departure from a consistent thirty-year pattern is the single most persuasive fact available. A decedent who changed their estate plan every four years for three decades presents a much weaker case.

Who was in the room? Identify the confidential relationship and the procurement facts that would trigger the presumption. Without them, an undue influence claim is a direct-evidence case and will usually fail.

What is in the medical record? Not the diagnosis — the contemporaneous notes for the week of execution.

Is there a fiduciary claim? Often the accounting proceeding is stronger, cheaper, and faster than the contest, is not barred by the no-contest clause, and produces the discovery that supports the contest. Consider filing it first.

Is there an elder abuse claim? Longer limitations period, fee-shifting, and enhanced damages in many states.

Can the client fund it? These cases run eighteen months to three years, require experts, and rarely settle early. A client who cannot sustain that should be told so directly rather than discovering it in month nine.

What does the client actually want? Sometimes it is money. Frequently it is acknowledgment, or the house, or an accounting that shows where the money went. A case built around the wrong objective settles badly or not at all.

Defending the instrument

Counsel for the proponent — usually the named fiduciary, sometimes the principal beneficiary — has a distinct set of priorities, and the first is recognizing that the fiduciary's role and the beneficiary's role are different.

Separate the hats. A personal representative or trustee owes duties to all beneficiaries, including the contestant. Defending the instrument is generally within the fiduciary's duty to uphold the decedent's expressed intent, but a fiduciary who is also the principal beneficiary has a conflict that opposing counsel will exploit. Where the conflict is material, consider whether the fiduciary should defend in a personal capacity with separate counsel, leaving the fiduciary neutral.

Watch the fee source. Estate funds may generally be used to defend the instrument, but not to advance a beneficiary's personal interest, and a court can order reimbursement of fees improperly charged. Segregate time from the outset.

Send the statutory notices immediately. For trusts, the § 604 notice starts a short contest period. For estates, prompt notice to interested persons starts the probate contest clock. Delay only helps the contestant.

Preserve everything, and get the drafting file first. The attorney's file will be produced eventually under the testamentary exception. Read it before the contestant does, because it either supports the instrument or it does not, and that determination should drive settlement posture from week one.

Interview the witnesses early. Attesting witnesses and the notary have fading memories and are frequently elderly themselves. Take statements while recollection exists.

Assemble the counter-narrative. The strongest defense is rarely a denial. It is an affirmative account of why the disposition makes sense: the estranged child who did not visit for a decade, the daughter who moved home and provided care for four years, the prior instruments that trended in the same direction, the decedent's own contemporaneous statements to a physician or a friend.

Move early on standing and limitations. These are dispositive and cheap. A motion that resolves the case in month three is worth more than a trial victory in year three.

Consider the mediation timing. Estate mediations work best after the drafting file and medical records are exchanged and before expert reports. Both sides then know the shape of the case, and neither has spent the money that hardens positions.

Do not litigate the family history. It is inadmissible, it is inexhaustible, and every hour spent on it is an hour the client pays to relitigate their childhood.

Related articles

This article is provided for general informational purposes and does not constitute legal advice. Contest deadlines are short, vary by state, and are frequently jurisdictional — missing one generally ends the claim regardless of its merit. Standards for capacity and undue influence, the enforceability of no-contest clauses, the availability of a tortious interference claim, and Dead Man's Statutes all differ substantially among the states. Consult qualified probate litigation counsel promptly.