198 Ariz. 323, 9 P.3d 1062 (Ariz. 2000)
In re Estate of Shumway is a leading Arizona Supreme Court decision on the enforceability of no-contest (in terrorem) clauses in wills. The case squarely addresses the statutory "probable cause" exception and sets the controlling standard for determining when a contestant's challenge—though ultimately unsuccessful—should not trigger forfeiture under a no-contest clause.
Under Arizona's probate code, when is a no-contest clause in a will enforceable against beneficiaries who file a will contest, and specifically, what constitutes "probable cause" sufficient to render the clause unenforceable?
Arizona Revised Statutes § 14-2517 provides that a provision in a will purporting to penalize an interested person for contesting the will or instituting other proceedings relating to the estate is unenforceable if probable cause exists for instituting the proceeding. Probable cause is an objective standard, assessed as of the time the proceeding is initiated, and exists when the facts known or reasonably believed by the contestant would lead a reasonable person, properly informed and advised, to conclude that there is a substantial likelihood that the challenge would be sustained. The existence of probable cause is a question of law for the court.
The Arizona Supreme Court held that, although the will was valid and summary judgment for the proponent was proper, the contestants had probable cause to file their challenge based on the facts known at the time. Therefore, the no-contest clause was unenforceable against them under A.R.S. § 14-2517.
Shumway is a cornerstone Arizona case for no-contest clauses. It teaches that forfeiture provisions do not bar beneficiaries from filing colorable challenges supported by reasonable grounds, even if those challenges fail. For law students, the case is central to mastering: (1) the statutory probable-cause exception to in terrorem clauses; (2) the undue influence framework and the role of suspicious circumstances; (3) the timing and standard for assessing probable cause; and (4) the policy balance between testator autonomy and the need to police potential overreaching in the will-execution process. The case also illustrates how courts can affirm will validity on the merits while simultaneously protecting contestants from forfeiture when their suit had an objectively reasonable basis.