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Wills & Estates

How to Make a Valid Will in Australia

Last updated: June 2026

Who Can Make a Will?

To make a valid will in Australia you must:

  1. Be 18 years or older (exceptions in some states for married persons under 18)
  2. Have testamentary capacity — understand what a will is, the nature and extent of your property, and who might reasonably expect to benefit

Requirements for a Valid Will

A will must be:

  1. In writing (typed or handwritten)
  2. Signed by you at the end
  3. Witnessed by two people present at the same time when you sign

Witness Rules

Both witnesses must:

  • Be present when you sign
  • Sign the will in your presence
  • Be 18 or older (most states)
  • Not be a beneficiary — if a witness is also a beneficiary, they risk losing their entitlement

What to Include

  • Revocation clause (revokes all previous wills)
  • Appointment of executor(s)
  • Specific gifts to named beneficiaries
  • Residuary estate clause (everything not specifically gifted)
  • Guardianship of minor children
  • Substitute beneficiaries (if a beneficiary dies before you)

Marriage and Divorce

  • Marriage revokes a previous will (unless made in contemplation of that marriage)
  • Divorce does not revoke the will, but typically revokes gifts to a former spouse and their appointment as executor

Updating Your Will

  • New will (recommended): explicitly revoke all previous wills
  • Codicil: minor written amendment, same signing/witnessing formality required

Key Points

  • Two independent witnesses who are not beneficiaries
  • Marriage revokes a previous will — update after major life events
  • A new will is cleaner than a codicil for anything more than minor changes
  • Tell your executor where the will is stored

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