Faith and the Law, on the Same Page

4 min read

Legal Insights & Practices

Are Islamic Wills Valid in Australia?

By Wasiyya Editorial • 4 min read

Yes — an Islamic will can be completely, legally binding in Australia. Many Muslims worry they have to choose between honouring their faith and complying with Australian law, fearing a faith-based document might be thrown out by the courts. The reassuring truth is that both systems can coexist within a single, valid document. Australian law grants broad testamentary freedom, meaning you’re entitled to distribute your estate according to Islamic inheritance rules (Farāʾiḍ) — provided the will itself is drafted and executed correctly.

 

Meeting Australian Legal Standards

For any will to be recognised by Australian courts, it must strictly follow state-based legislation, such as the Succession Act 2006 (NSW) or the Wills Act 1968 (ACT). To keep your Islamic will legally valid, it needs to satisfy these core requirements:

  • In writing and signed. The document must be written, and you (the testator) must sign it voluntarily, free of coercion.
  • Properly witnessed. Your signature must be witnessed by two independent adults present at the same time, who then sign the document themselves.
  • Testamentary capacity. You must be of sound mind, fully understanding the nature of a will and the assets you’re distributing. This is exactly what was at stake in Omari v Omari [2012] ACTSC 33, where the ACT Supreme Court struck down a Sharia-compliant will — not because it followed Islamic principles, but because the testator lacked capacity due to advanced dementia at the time of signing.

“The ACT Supreme Court struck down a Sharia-compliant will — not because it followed Islamic principles, but because the testator lacked capacity due to advanced dementia.”

Incorporating Islamic Principles

Once the legal formalities are met, Australian testamentary freedom lets your will reflect classical Sunni inheritance principles, generally by splitting your estate into two components:

  • The Wasiyyah (discretionary bequest). You may allocate up to one-third of your net estate to non-heirs — charities (Sadaqah Jāriyah), community projects, or relatives who wouldn’t automatically inherit under Islamic law.
  • The Farāʾiḍ (fixed shares). The remainder is distributed to your eligible heirs — spouse, parents, children — according to the prescribed Quranic shares.

To avoid partial intestacy, where leftover assets get distributed by the state rather than your faith, a well-drafted will also needs clear residuary instructions covering exactly what happens to any remaining funds.

 

Managing the Risk of Family Provision Claims

It’s worth being upfront about the legal challenges. Because Islamic inheritance rules distribute wealth according to specific duties and relationships — which can mean differing shares between male and female children — an Islamic will can be vulnerable to a family provision claim. Australian succession law lets eligible dependants, such as a spouse or child, contest a will if a court finds they haven’t been adequately provided for.

 

To manage this risk thoughtfully:

  • Use the Wasiyyah strategically. If a financial dependant might be left vulnerable under strict Farāʾiḍ distribution, your one-third discretionary bequest can top up their provision, reducing the chance of a successful challenge.
  • Make lifetime gifts. Supporting dependants while you’re alive eases their financial need and lowers the risk of claims after your death.
  • Appoint a knowledgeable executor. Choose someone who understands both Australian probate processes and Islamic obligations, so any disputes are handled with legal precision and religious sensitivity alike.

This article offers general information, not personalised legal or religious advice. If you have complex family dynamics, dependants with special needs, or business structures, speak with a qualified solicitor or Islamic scholar.

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Wasiyya helps you build a legally robust, Fiqh-compliant will that brings Australian succession law and Islamic inheritance rules together seamlessly — so you can have complete peace of mind.