How To Make A Legally Valid Will in Australia (2026 Guide)

Having a Legally Valid Will in Australia is one of the most important steps you can take to protect your loved ones and ensure your final wishes are carried out. However, the laws and requirements for Wills can differ slightly between states and territories. In this guide, we’ll break down core legal requirements, discuss common pitfalls, and show you how Will Hero makes the process simple, affordable, and stress-free.

We keep this guide updated so you have accurate requirements for every state and territory. For how we build our Wills and keep them compliant, see our legal framework.

What is a Will?

A Will is a legal document that explains how you want your assets—such as money, property, and personal possessions—distributed after your death. You can also use your Will to:

• Appoint a guardian for minors.
• Specify funeral instructions.
• Leave charitable bequests or gifts.

The person who creates the Will is called the testator, and the individual(s) who carry out those instructions are known as the executor(s).

Why You Need a Legally Valid Will in Australia

Control Your Legacy If you die without a Will, your estate is distributed according to intestacy laws, which may not align with your wishes.

Protect Loved Ones Ensure financial security for your spouse, children, or other dependants by naming them as beneficiaries. For guidance on appointing guardians for minor children, see our guide on choosing a guardian for your will. Learn more about spousal inheritance rights in Australia and how marriage affects estate distribution. Don’t forget to include backup beneficiaries to protect your wishes if your primary beneficiaries can’t inherit.

Minimise Disputes A clearly expressed, valid Will can help reduce family conflicts and lengthy court battles.

Simplify Probate Having a formal, valid Will often speeds up estate administration, reducing stress for your executors.

5 Core Requirements for a Legally Binding Will in Australia

Although the details differ slightly across states and territories, the five core requirements below generally apply:

1. Legal Age
You must be at least 18 years old (with exceptions for married minors or court-authorised Wills).

2. Testamentary Capacity (“Sound Mind”)
You must understand the purpose of a Will, the nature of your assets, who your beneficiaries are, and the consequences of your decisions.

3. Written Format
Your Will must be in writing (handwritten or typed). While “holographic Wills” (fully handwritten) can sometimes be accepted, most states require proper witnessing and signatures. Online Will platforms guide you through proper formatting and witnessing procedures to ensure your Will meets all legal requirements.

4. Signature of the Testator
You must sign the Will (or direct someone to sign on your behalf in your presence). This signature shows your intention to give the document legal effect.

5. Witnesses

• At least two competent adults must witness your signature.
• In most states, it’s strongly advised that witnesses not be beneficiaries, to avoid any allegations of undue influence or invalidation of gifts.

State and territory guides

For full step-by-step requirements and witnessing rules in your state or territory, use the guides below. Each guide explains the legal requirements and how to make a valid will in that jurisdiction.

• Australian Capital Territory — Witnessing rules, age requirements, and steps under ACT law. Read the ACT guide →
• New South Wales — Requirements and procedures under the Succession Act 2006 (NSW). Read the NSW guide →
• Northern Territory — Will requirements and witnessing under NT law. Read the NT guide →
• Queensland — Steps and formalities under the Succession Act 1981 (Qld). Read the Queensland guide →
• South Australia — Requirements under the Succession Act 2023 (SA). Read the South Australia guide →
• Tasmania — Witnessing and validity under the Wills Act 2008 (Tas). Read the Tasmania guide →
• Victoria — Witnessing rules and steps under the Wills Act 1997 (Vic). Read the Victoria guide →
• Western Australia — Requirements under the Wills Act 1970 (WA). Read the Western Australia guide →

For what happens if you die without a Will in your state, see our guides on dying without a Will in Queensland, Victoria, and Western Australia, and our Australia-wide guide.

State-by-State Guide to Will Requirements

Requirements are similar across Australia, but each state or territory has minor variations. Here’s a quick-reference table comparing minimum age, format specifics, witnessing rules, and informal Will acceptance in each region:

Common Mistakes to Avoid

For a comprehensive guide to all 10 common Will mistakes and how to avoid them, see our detailed article: Common Mistakes People Make When Making a Will (And How to Avoid Them).

• Witnessing Mistakes
  Use independent witnesses (not beneficiaries) to reduce the risk of invalidating gifts.

• Not Updating After Life Events
  Marriage, divorce, or the birth of a child can revoke or alter parts of your Will. Update promptly.

• Overlooking Executor Responsibilities
  Choose an executor who is willing and able to handle administrative tasks. Learn more about how to choose the right Executor for your Will, including what to look for and common mistakes to avoid.

• Failing to Revoke Old Wills
  If you have more than one Will, confusion can arise. Always include a revocation clause in the latest version.

• Relying on ‘Informal’ Wills
  Courts can accept informal Wills, but it’s time-consuming and costly to prove. Follow the formal process from the start.

What are my options for making a Will?

Online Wills

• Cost-Effective & Convenient: Often less expensive than traditional legal services and can be completed on your own schedule.
• Straightforward Guidance: Ideal for simpler estates with fewer complexities. Online Will platforms such as Will Hero provide all the tools to make your own DIY Will. In fact, you can make a will in less than 12 minutes with Will Hero’s streamlined process.

Lawyer-Drafted Wills

• Expert Legal Advice: Helpful if you have complex assets, blended families, or need intricate legal clauses.
• Fully Tailored: Personal consultations ensure your Will is customized to your unique situation and complies with all legal nuances.

Updating or Revoking Your Will

When to Update: After major life events: marriage, divorce, births, deaths, or substantial changes in assets.

How to Revoke: Draft a new Will with a revocation clause stating it replaces all previous Wills.

• Destroy old copies to avoid confusion.
• Ensure you follow proper witnessing and signing requirements again.

FAQs on Legal Wills in Australia

How Will Hero Can Help

Making a legally valid Will doesn’t have to be complicated. Will Hero offers:

• Step-by-Step Visual Guidance: A user-friendly interface walks you through each clause, ensuring you don’t miss important details. Will Hero provides visuals to you understand how your estate will be distributed to your beneficiaries.
• More than just a Simple Will: Adjust and add clauses to suit your personal situation, whether you have a simple or moderately complex estate.
• AI Assistant: Will Hero’s AI Assistant WillBot is there 24/7 to answer any questions you have about Wills, estate planning, and your local laws.
• Professional Support: Access help if you have queries about witnessing, signing, or storing your Will safely. Learn about the safest places to store your will and best practices for will storage.
• Ongoing Updates: Easily revise your Will if circumstances change—marriage, divorce, new children, or significant asset changes. You can make changes and update your Will as many times as you like within a 12 month period.
• Affordable: Will Hero costs a fraction of the amount you would pay a lawyer.

With Will Hero, you can create a Will that fits your state’s requirements without the high cost or scheduling hassles of traditional routes. If your estate is especially complex, consider using Will Hero as a first step, then consult a lawyer for final review.

Conclusion

Creating a legally valid Will in Australia is essential for protecting your loved ones and ensuring that your estate is handled the way you want. By understanding the core requirements, state-by-state differences, and common pitfalls, you can draft a Will that stands up in court.

Whether you choose an online platform like Will Hero or opt for a lawyer-drafted Will for more complex estates, the key is taking action sooner rather than later. Will Hero makes this process easier with state-compliant online Will creation and professional review. Start the process today and secure your family’s future—knowing your final wishes will be carried out faithfully.