Got a new partner? Then you need a new Will, or your ex could walk away with everything
Australians entering new relationships are being warned of a shocking legal reality: if you don’t update your Will, your ex-partner or unintended beneficiaries could inherit your estate, leaving your current partner and children with little or nothing.
Brisbane solicitor Jennifer Williamson, Principal and founder of Williamson and Associates, said she is seeing a surge in estate disputes driven by outdated Wills that no longer reflect modern relationships.
“People assume their assets will automatically go to their current partner or children, but that is simply not the case,” Jennifer said.
“If your Will hasn’t been updated, your ex could still be named as a beneficiary. In some cases, they could receive the entire estate while your current partner is left with nothing.”
With blended families now the norm across Australia, Jennifer warns the legal risks are escalating fast.
“Second marriages, de facto relationships, stepchildren and shared assets have made estate planning far more complex,” she said.
“Unfortunately, too many people are still relying on Wills written decades ago, before their lives completely changed.”
The nightmare scenario playing out in courts
Jennifer said she is increasingly seeing families blindsided after a death, when outdated documents trigger disputes, shock outcomes and costly legal battles.
“We are seeing situations where a current partner believes they are financially secure, only to discover the estate is tied up in an old Will that benefits an ex-spouse,” she said.
“By the time it reaches court, emotions are high, relationships are fractured and significant portions of the estate are eaten up in legal fees.”
In some cases, she warned, the law may step in and distribute assets in ways that no one expected.
“When a Will is unclear, outdated or doesn’t account for a blended family, you are effectively handing control over to the legal system,” Jennifer said.
“Unfortunately, the outcome may be very different from what you intended.”
Blended families creating a legal minefield
Jennifer said blended family structures are one of the biggest drivers of estate disputes in Australia.
“If your Will does not clearly outline how assets are to be divided between a current partner and children from previous relationships, you are leaving behind a blueprint for conflict,” she said.
Superannuation, jointly owned property and informal financial arrangements can further complicate outcomes, particularly when documentation has not been aligned.
“People think their wishes are obvious, but legally, assumptions mean nothing,” she said.
“Without clear instructions, competing claims can arise almost immediately.”
The real cost: families torn apart
Beyond the financial consequences, Jennifer said the emotional toll can be devastating and permanent.
“I have seen families completely fracture over estates,” she said.
“Siblings stop speaking, stepfamilies break down and relationships that took decades to build are destroyed in a matter of months.”
She warned that many of these disputes are entirely avoidable.
“The cost of updating a Will is minimal compared to the financial and emotional cost of litigation,” she said.
Why Australians are getting caught out
Despite the risks, many Australians delay updating their Wills due to discomfort, procrastination or a false sense of security.
“People don’t like thinking about death, or they assume their old documents still apply,” Jennifer said.
“As we know, life changes quickly. New partners, new children, new assets, your Will needs to keep up.”
She added that entering a new relationship, particularly a remarriage or long-term de facto partnership, is one of the most critical triggers for an immediate review.
A clear warning: update your Will now
Jennifer is urging Australians to act before it’s too late.
“If you have a new partner and an old Will, you are taking a serious risk,” she said.
“You could unintentionally disinherit the people you love most.”
Her advice is simple: review and update your Will after any major life change, and ensure it reflects your current circumstances.
“The greatest gift you can leave your family is clarity,” she said.
“Without it, you may leave behind conflict, confusion and consequences you never intended.”
About Jennifer Williamson
Jennifer Williamson is the Principal and founder of Williamson and Associates, a Brisbane-based legal practice specialising in Wills, estate planning and Enduring Powers of Attorney. With more than 35 years of experience, she is a member of the Queensland Law Society and a commissioned Notary Public. Based in Rocklea, Brisbane, she works with individuals and families across Queensland to deliver practical, cost-effective and personalised legal solutions.
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