A Last Will and Testament is the foundational document of any Australian estate plan. It is a legally binding written instrument in which you — the Testator — set out how you wish your assets to be distributed after your death, who you appoint to manage the process, and who will care for your minor children if both parents are deceased. Without a valid Will, you die intestate and your estate is distributed according to the intestacy rules prescribed by your state or territory's Succession Act — rules that may bear no relationship to your actual wishes.

In Australia, Will-making is governed by each state and territory's own legislation, but the requirements are substantially uniform. The key statutes are the NSW Succession Act 2006, the VIC Wills Act 1997, the QLD Succession Act 1981, the WA Wills Act 1970, the SA Wills Act 1936, the TAS Wills Act 2008, the ACT Wills Act 1968, and the NT Wills Act 2000. All require the Will to be signed by the Testator in the presence of two witnesses who are both present simultaneously, with each witness also signing in the Testator's presence.

An Australian Will typically addresses several key matters. The Executor is the person you appoint to administer your estate — collecting assets, paying debts and taxes, and distributing the estate to beneficiaries. Specific bequests are gifts of particular assets to named individuals or organisations. The residuary estate is everything remaining after specific gifts and debts, and is usually left to a spouse or children. Where minor children are involved, a guardian nomination is essential, as it guides the Family Court when making guardianship orders.

Superannuation — Australia's compulsory retirement savings system — does not automatically pass under your Will. Your super fund trustee exercises discretion in paying your death benefit, subject to any binding death benefit nomination (BDBN) you have made under the Superannuation Industry (Supervision) Act 1993 (Cth). Coordinating your Will with your BDBN is a critical step in Australian estate planning.

A testamentary trust — a trust established by the Will itself — is a uniquely powerful Australian estate planning tool. Under the Income Tax Assessment Act 1997 (Cth), income distributed from a testamentary trust to minor beneficiaries is taxed at adult marginal rates rather than at the punitive minor rates, offering significant tax advantages for families with children or grandchildren.

Every Australian adult who owns any assets — a bank account, superannuation, a vehicle, a home, or personal property — should have a current, valid Will. The following circumstances make a Will particularly urgent.

Parents of minor children face the most critical need: without a Will, there is no guardianship nomination to guide the Family Court when appointing someone to care for your children. A Will allows you to nominate the person you trust to raise your children and to name a substitute in case your first choice cannot act.

Blended families face complex estate planning challenges. Intestacy rules in Australia generally favour a surviving spouse, which can leave children from a prior relationship with nothing. A carefully structured Will — often combined with a testamentary trust or specific bequests — ensures each child receives their intended inheritance.

Business owners and investors with complex assets benefit from a Will that provides clear instructions for the continuity or sale of business interests, and that coordinates with shareholders' agreements and superannuation nominations. Without these instructions, an executor may be forced to sell assets at an unfavourable time.

Individuals with significant superannuation balances should make a Will in conjunction with a binding death benefit nomination. Superannuation does not pass under a Will unless paid to the estate, so both documents must be coordinated.

You should review and update your Will after every major life event: marriage (which in most states automatically revokes a prior Will), divorce (which revokes gifts to a former spouse in most states under the applicable Succession Act), the birth of a child, significant changes in assets, or the death of a named Executor or beneficiary.

A well-drafted Australian Will should contain several essential provisions.

The opening declaration establishes the Testator's identity, residence, and testamentary capacity — that the Testator is of sound mind, memory, and understanding and is acting freely. This is important if the Will is ever challenged on grounds of incapacity or undue influence.

The revocation clause expressly revokes all prior Wills and codicils, ensuring this Will is the operative document. Without an express revocation clause, earlier documents may cause uncertainty.

The Executor appointment is one of the most important decisions in any Will. The Executor has broad powers under the applicable Trustee Act to sell assets, pay debts, and distribute the estate. Appointing an alternate Executor ensures administration can proceed if the primary Executor cannot act.

Specific bequests should be drafted with precision. Describe assets with enough detail to identify them unambiguously — for real property, include the full address and certificate of title reference; for vehicles, include the registration number; for financial assets, include the account or policy number.

The residuary clause captures everything not specifically bequeathed and should include a substitute beneficiary (or trust) in case the primary residuary beneficiary predeceases the Testator.

A testamentary trust clause, if included, establishes a discretionary trust to take effect upon death. Drafted correctly, it provides income-splitting benefits for minor beneficiaries under the Income Tax Assessment Act 1997 (Cth) s.102AG and protects assets for vulnerable beneficiaries.

The execution clause and witness attestation must strictly comply with the applicable state Succession Act. Both witnesses must be physically present when the Testator signs, and must sign the Will in the Testator's presence. Witnesses who are beneficiaries risk losing their gifts, so independent witnesses are essential.