In Australia, there are several legal grounds on which a will can be contested. These may include:

• Lack of Capacity: If it can be proven that the testator (the person who made the will) did not have the mental capacity to understand the consequences of their will when it was created.
• Undue Influence: If there is evidence that the testator was unduly influenced by another person when making or amending the will.
• Fraud or Forgery: If the will is suspected to be fraudulent or if someone forged the testator’s signature.
• Improper Execution: If the will does not meet the legal requirements for proper execution, such as having the necessary witnesses or signatures.
• Family Provision Claims: Under family provision laws, eligible family members or dependents may contest a will if they believe they have not been adequately provided for in the will.

• Family provision claims are common in contested will cases. These claims allow certain family members or dependents to seek a share of the deceased’s estate if they believe they have not received a fair and just provision.
• The court will consider factors such as the financial needs and circumstances of the claimant and the deceased’s moral obligations when determining the outcome of a family provision claim.

• To challenge the validity of a will, the person contesting it (the “claimant”) typically files a court application, and the matter is heard by a judge. Evidence and witnesses may be presented to support the claim.
• It’s important to note that not everyone has standing (the legal right) to contest a will. Generally, eligible claimants include spouses, children, and other dependents of the deceased.

• In some cases, contested will disputes can be resolved through mediation or negotiation without going to court. This can be a more cost-effective and less emotionally draining option for all parties involved.

• If a contested will dispute cannot be resolved through negotiation or mediation, it may proceed to court. Each state and territory in Australia has its own Supreme Court or similar jurisdiction for handling such matters.
• The court will assess the evidence presented and make a determination regarding the validity of the will and the claims made by the parties involved.

• Contesting a will can be a lengthy and expensive process. Legal fees, court costs, and other expenses can accumulate.
• The timeframe for resolving a contested will case can vary widely, depending on the complexity of the issues and the backlog of cases in the relevant court.
• Contested wills in Australia are legally complex matters, and it is advisable for both claimants and executors of estates to seek legal advice from experienced estate lawyers. Legal professionals can provide guidance on the appropriate steps to take and help navigate the legal process, whether it involves negotiation, mediation, or court proceedings.