Administration Act 1903 WA: What It Means for Your Estate

When someone dies in Western Australia, two questions immediately arise: who has the legal authority to deal with the estate, and who is entitled to receive what is left in it? The answers to both questions are found in the Administration Act 1903 (WA) — Western Australia's primary statute governing the administration of deceased estates.

If you are an executor, an administrator, or a family member trying to understand what you are legally entitled to or responsible for, this is the legislation that controls the outcome.

What the Act Covers

The Administration Act 1903 (WA) deals primarily with:

Intestate succession — the rules for who inherits when a person dies without a valid will. The Act sets out a rigid statutory formula that distributes assets in a fixed order of priority. There is no discretion, no room for family agreements to override it without court involvement, and no consideration of what the deceased might have wished.

Who can apply for Letters of Administration — when there is no will, someone must apply to the Supreme Court of Western Australia for authority to manage the estate. The Act establishes a strict hierarchy of who has priority to apply, starting with a surviving spouse or de facto partner, then children, then parents, then siblings, and so on through more distant relatives.

Executor and administrator duties — the Act sets out the fiduciary obligations that apply once the court has granted either Probate (for executors named in a will) or Letters of Administration (for administrators dealing with an intestate estate). These duties include the obligation to pay debts before distributing to beneficiaries, to account to all beneficiaries, and to act in the estate's interests rather than their own.

The Intestacy Formula and the 2025 Legacy Update

The Act's intestacy provisions are the part most people need to understand immediately. The statutory legacy amounts — the fixed sums a surviving spouse receives before any remainder is split — were updated by ministerial order effective 5 July 2025.

Where a spouse and children survive: The spouse receives the household chattels, the first $546,000 of the estate, and one-third of any remaining balance. The children divide the remaining two-thirds equally. This applies regardless of whether the children are from the current relationship or an earlier one.

Where a spouse survives but no children: The spouse receives the household chattels, the first $815,500 of the estate, and one-half of any remaining balance. The other half is divided between the deceased's parents, incorporating a $65,500 parental legacy where applicable.

Where no spouse survives: Children take the entire estate equally. If no children exist, the estate passes to grandchildren, then to parents, then to siblings, and progressively to more distant relatives.

If the estate is worth less than the statutory legacy amount, the surviving spouse receives everything and the calculation stops there.

De Facto Partners Under the Act

A de facto partner has exactly the same rights as a legally married spouse under the Administration Act 1903 (WA) — but only if the relationship was continuous for at least two years immediately prior to death.

This equivalence sounds straightforward but creates practical difficulty. The deceased can no longer testify to the relationship. A surviving de facto partner who wants to apply for Letters of Administration must provide the Supreme Court with documentary evidence establishing the relationship — shared address records, joint bank accounts, joint utility bills, or other evidence of a genuine domestic life together. Where the evidence is thin or disputed, the Family Court of Western Australia may need to formally assess and confirm de facto status, which adds both time and cost.

Section 63 Creditor Protection

One of the most practically important parts of the Act for executors and administrators is Section 63 of the Trustees Act 1962 (WA) (which operates alongside the Administration Act framework). This provision allows an executor or administrator to publish a formal Notice to Creditors in the WA Government Gazette and a relevant local newspaper, giving creditors at least 30 days to submit any claims against the estate.

Once that period expires, the executor can distribute the residual estate with protection from personal liability for any unknown debts that emerge afterwards. Without publishing this notice, an executor who distributes the estate remains personally exposed if a creditor surfaces months or years later.

The notice costs a minimum of approximately $80 to publish in the Gazette. It is one of the most cost-effective legal protections available to an executor.

When the Act Does Not Apply

The Administration Act 1903 (WA) governs only assets that form part of the estate. Several categories of assets fall outside the estate entirely and are therefore not subject to the Act's intestacy formula:

• Superannuation paid to a nominated beneficiary or reversionary beneficiary
• Life insurance payable to a named beneficiary
• Property held as joint tenants (it passes automatically to the surviving owner through survivorship, not through the estate)
• Trust assets

Understanding which assets are inside and which are outside the estate is the first step in any estate administration. Property and financial accounts can be either, depending on how they are held.

What This Means in Practice

If a loved one has died without a will, the Administration Act 1903 (WA) dictates the entire outcome. The statutory formula may produce results the family finds unfair — particularly in blended families, in relationships where de facto status is disputed, or in situations where the deceased had complex or uneven financial ties with different family members.

The Act does not make exceptions for informal arrangements, longstanding understandings, or verbal promises the deceased made while alive. The formula is applied as written.

Navigating the application for Letters of Administration, understanding what the estate is worth, and distributing it correctly according to the Act's formula is a structured but involved process. The WA Estate Settlement Guide walks administrators through each stage — from the Supreme Court affidavit requirements to the Section 63 creditor notice and final distribution — with WA-specific forms and timelines.

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