ID S1047

Adds new section 15-1-502 to require Idaho courts to enforce no-contest clauses in trusts and wills, with specified exclusive exceptions that the court cannot modify.

Allows settlors and testators to define conduct triggering loss of benefits, including conduct beyond formal court actions such as civil litigation, interference with trust administration, or efforts to frustrate powers of attorney.

Prohibits no-contest clauses from reducing or eliminating beneficiary shares when the beneficiary seeks only to enforce trust or will terms, enforce legal rights, or obtain court rulings on the document's construction or validity.

Prevents no-contest clauses from penalizing beneficiaries who institute good faith legal actions with probable cause to invalidate a trust, will, or related instrument.

Repeals section 15-3-905 relating to penalty clauses for contest and applies the new provisions to all existing trusts and wills regardless of creation date.