Under Australian estate law, executors owe a fiduciary duty to all beneficiaries. This guide explains exactly what conduct justifies a dispute, what steps to take first, and how the courts approach these matters in 2026.
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Australian Estate Law: Guide to Disputing Executor Conduct

Simons George Legal
July 16th, 2026

Guide to disputing executor conduct in Australia: Taking formal legal steps to challenge an executor’s improper, delayed, or self-interested administration of a deceased estate.

Under Australian estate law, executors owe a fiduciary duty to all beneficiaries. That duty requires them to act honestly, without self-interest, and within a reasonable time.

Beneficiaries have enforceable rights to dispute executor conduct when there is objective evidence of misconduct or mismanagement. The key is distinguishing between genuine legal breaches and ordinary family tension or impatience.

This guide explains exactly what conduct justifies a dispute, what steps to take first, and how the courts approach these matters in 2026…