In short

After an early dementia diagnosis, a person typically still has legal capacity, but it will decline over time. The priority steps while capacity remains are appointing an enduring power of attorney, completing an advance care directive, making or updating a will, confirming super death benefit nominations, and making any genuinely intended gifts. Acting promptly avoids a tribunal-appointed administrator and a costly, less personal court-made statutory will.

A diagnosis of early-stage dementia — or another condition signalling progressive cognitive decline — is a frightening and grief-laden moment for the person and their family. But alongside the personal weight, it opens a critical and time-limited window for financial and legal action. Many of the most important protective steps — appointing an enduring power of attorney, making or updating a will, completing an advance care directive, confirming superannuation death benefit nominations, and making any intended gifts or decisions — depend on the person having legal capacity at the time they act. The crucial point is that an early diagnosis does not mean capacity is immediately gone: in the early stages, the person typically still has capacity to make these decisions. But that capacity will decline over time and may eventually be lost. So the period after diagnosis is the window in which the person can still make their own decisions, in their own way, with legal validity — and put in place the structures and documents that will protect them and reflect their wishes when they can no longer act for themselves. Acting promptly, with appropriate legal and medical input, lets the person retain control, record their wishes, appoint the people they trust, simplify their affairs for easier future management, and spare their family confusion and conflict later. This is an action checklist for the diagnosis moment, and the reason it matters is simple: capacity is a closing window, and these steps must be taken while it remains open.

Why does the capacity window matter so much?

The foundation of everything that follows is the capacity window. Making a will, an enduring power of attorney, an advance care directive, or a binding superannuation nomination — and making gifts or significant financial decisions — all require legal capacity at the time the person acts. Early-stage dementia is not the same as an immediate loss of capacity; the person usually still has the capacity to make these decisions early on. But capacity declines as the condition progresses, and may be lost — at which point the person can no longer act for themselves, and others must step in under arrangements that should have been made earlier. Acting while capacity is clear (and, where prudent, with a medical assessment confirming it) not only ensures the person makes their own choices, but also makes those documents far more resistant to later challenge on capacity grounds. The window is real, and it closes — which is why prompt action after diagnosis is so important. Because the rules and the terminology differ between states and territories, a solicitor should be involved from the outset.

Step one — why is the enduring power of attorney so urgent?

The enduring power of attorney for financial matters is often the most urgent step. It lets a trusted person manage the person's financial and legal affairs, and, unlike a general power of attorney which ends if you lose capacity, an enduring power continues to operate after capacity is lost. That is exactly why it must be made while the person still has capacity — once capacity is gone, it is too late, and instead a tribunal must appoint an administrator, who may not be the person the individual would have chosen. So appointing an enduring attorney early, choosing a trusted and capable person (and a backup), and deciding whether one person or two act jointly, is frequently the single most important and urgent step after a diagnosis. It ensures someone the person trusts can step in seamlessly when needed, rather than leaving it to a tribunal-appointed stranger.

Step two — what about the advance care directive and health decisions?

The next step records the person's wishes for their care. An advance care directive, and the appointment of a medical decision-maker — known in many states as an enduring guardianship or medical power of attorney, which lets someone make medical and lifestyle decisions for you when you can no longer do so yourself — records the person's wishes for medical treatment and personal and lifestyle decisions, and appoints who will make them. Like the enduring power of attorney, it must be made while the person has capacity. Completing it ensures future care reflects the person's own wishes — their treatment preferences, where they want to live, their end-of-life care — and it relieves the family of the painful burden of guessing what the person would have wanted. Doing this while the person can still express their wishes clearly is a gift to both the person and their family.

Step three — why make or update the will now?

While capacity is clear, the person should make or update their will so it reflects their wishes, and so its validity can't easily be questioned later. Making a will requires testamentary capacity, and doing it early — with medical confirmation of capacity if prudent — protects against a later challenge. If capacity is already in doubt, a statutory will (made by a court) may become the only option, a topic covered elsewhere, but acting before that point, while the person can make their own will, is far better. The will should also be coordinated with the person's non-estate assets, such as super and jointly-held property, so the whole plan aligns.

Step four — what about superannuation death benefit nominations?

Superannuation is often directed outside the will, so it needs its own attention. Super death benefits are paid according to your nomination, or at the trustee's discretion, not automatically under your will: if there is no nomination or only a non-binding one, the trustee may decide which dependant to pay, or pay your legal personal representative (your executor) to distribute under the will. Making a binding death benefit nomination requires capacity, so it should be made or confirmed while the person is still able. It is also important to check lapse dates: a binding nomination may be of the lapsing kind, which must be renewed or changed every three years or it expires, or the non-lapsing kind, which does not expire. For someone already in pension phase, a reversionary nomination, usually set while the person has capacity, may also be considered. Getting the super direction right while capable ensures this often-substantial asset goes where the person intends.

Step five — what decisions need to be made while capacity remains?

Some choices need capacity, so they are best made now. Any intended gifts are best made while capacity is clear, because an attorney's power to make gifts on the person's behalf is limited — and they should be made mindful of the Centrelink gifting rules, which let you give away up to $10,000 in a financial year and $30,000 over five years before the excess is counted as your asset for five years. Likewise, any major financial decisions the person wants to make themselves — selling an asset, restructuring an investment — are best made now, while they can. The important balance is to act on genuine intentions while capable without rushing into imprudent decisions out of panic, which is exactly why getting advice promptly, rather than acting hastily and alone, matters.

Step six — how does simplifying finances help?

Simplifying the finances makes future management far easier. Consolidating and reducing the number of accounts, super funds, and general complexity makes it much easier for the attorney and family to manage the person's affairs later. Creating an "in case" file — a clear record of accounts, super, insurers, advisers, documents, and key contacts — is invaluable for whoever steps in. Automating regular bill payments reduces the future management burden. And simpler finances are also less vulnerable to error and to financial abuse or scams, a heightened risk as cognition declines. Simplifying now, while the person can participate in the decisions, is far better than leaving a complex web for others to untangle later.

Step seven — why does telling family matter?

The final step ties it together. The people who will act — the attorney, the executor, and close family — should know about the arrangements and where the documents are kept (the family financial conversation, covered elsewhere). Communicating the person's wishes while they're able to express them reduces later confusion and conflict. And open communication, with multiple trusted people involved, reduces the risk of financial abuse, which is unfortunately a heightened risk where cognitive decline is involved. Throughout, the advice team — a solicitor (for the enduring power of attorney, advance care directive, and will, and to advise on capacity), a financial adviser (for simplifying finances, super nominations, and the overall plan), and medical input (to assess and document capacity where prudent) — should be engaged promptly, because the window is the whole point.

Worked examples

These two cases show the action checklist in practice. They are illustrative only and not personal advice.

Margaret, 73, has just been diagnosed with early-stage Alzheimer's. She is still managing well day-to-day and clearly has capacity, but she and her family are frightened and unsure what to do. She has a will from 20 years ago, no enduring power of attorney, and super with an old nomination. On these facts, Margaret is in the window — she has capacity now, but it will decline. On these facts it is generally rational to act promptly, gently, and in priority order. First, appoint an enduring power of attorney for financial matters, naming a trusted family member and a backup, so someone she trusts can manage her finances when she can't — the most urgent step. Complete an advance care directive recording her medical and care wishes. Update her 20-year-old will while her testamentary capacity is clear, with medical confirmation if prudent to protect against challenge. Review and update her super nomination, since the old one may have lapsed or be outdated. Simplify her finances and build an "in case" file. And have the family conversation so her attorney, executor, and children know the arrangements. Engaging a solicitor, her adviser, and her doctor promptly lets Margaret keep control and have her wishes honoured — the window is open, and these steps take it while it is.

Brian's family suspect his cognition has declined significantly, and they only now seek advice — but his capacity is already in real doubt. On these facts, the family may have missed part of the window, which illustrates exactly why prompt action after diagnosis matters. If Brian no longer has capacity, he can't make a new enduring power of attorney or will himself; instead, the family may need a tribunal-appointed administrator or guardian for financial and personal decisions, and a statutory will (court-made) if his will needs changing — both more cumbersome, costly, and less reflective of Brian's own choices than if he had acted earlier. On these facts it is generally rational to get urgent legal and medical advice to assess his current capacity, which may be borderline rather than gone, since for some decisions he may still have capacity; to act on whatever he can still validly do; and otherwise to pursue the tribunal and statutory routes. The lesson for other families is the value of acting early, soon after diagnosis, while capacity is intact, rather than waiting until it is in doubt.

For someone recently diagnosed with early dementia, and their family, the financial and legal action checklist is genuinely urgent, because capacity is a closing window. The supporting work is to convey the urgency compassionately (act while capacity is intact), prioritise the enduring power of attorney for financial matters, ensure the advance care directive and the will are made or updated, confirm or make the superannuation death benefit nominations (checking lapse dates), help the person make any genuinely intended gifts or decisions while they're capable (without rushing imprudent ones), simplify the finances and build the "in case" file, facilitate the family conversation and reduce the heightened risk of financial abuse, and coordinate the advice team — solicitor, financial adviser, and medical input — promptly. A diagnosis is devastating, but the period after it is precisely when the person can still make their own choices, in their own way, and have them stand. Taking these steps while capacity remains lets the person keep control of their affairs, ensures their wishes are recorded and honoured, appoints the people they trust to act for them, and spares their family confusion, cost, and conflict at an already painful time. The kindest and most competent response to a diagnosis is not to look away from the financial and legal reality, but to act on it — gently, promptly, and while the window is open.

Sources

Key takeaways

  • Early-stage dementia does not mean capacity is immediately gone — the person typically still has capacity to make legal and financial decisions in the early stages, but this window closes over time.
  • Appointing an enduring power of attorney for financial matters is often the most urgent step, since once capacity is lost a tribunal must appoint an administrator instead, who may not be the person's own choice.
  • Making or updating a will, completing an advance care directive, and confirming binding super death benefit nominations all require capacity at the time, so acting early also protects these documents against later challenge.
  • If capacity is already in doubt, a will can no longer be made directly — a statutory will made by a court may become the only option, and it's more cumbersome and less personal.
  • Any intended gifts are best made while capacity is clear, since an attorney's power to make gifts on the person's behalf is limited, and should be mindful of the Centrelink gifting rules.

Frequently asked questions

Does an early dementia diagnosis mean someone can no longer make legal decisions?

No, not immediately. In the early stages, a person diagnosed with dementia typically still has the legal capacity to appoint a power of attorney, make a will, and complete other important documents. Capacity declines as the condition progresses and may eventually be lost, which is why acting promptly after diagnosis matters.

What is the most urgent step to take after an early dementia diagnosis?

Appointing an enduring power of attorney for financial matters is often the most urgent step. Unlike a general power of attorney, an enduring one continues to operate after capacity is lost, letting a trusted, chosen person manage financial affairs — whereas without one, a tribunal must appoint an administrator who may not be who the person would have chosen.

What happens if a person's capacity is already in doubt before any planning is done?

If capacity is genuinely lost, the person can no longer make a new enduring power of attorney or will themselves. The family may instead need a tribunal-appointed administrator or guardian, and a statutory will made by a court if the will needs changing — both more cumbersome, costly and less reflective of the person's own wishes than acting earlier would have been.

Should super death benefit nominations be reviewed after a dementia diagnosis?

Yes. Super is often directed outside the will through a death benefit nomination, and making or confirming a binding nomination requires capacity. It's also worth checking whether an existing nomination has lapsed, since a lapsing binding nomination must be renewed every three years or it expires and the trustee regains discretion.

A note on advice. This article is general information only and doesn't account for your personal circumstances. Everyone's situation is different — before acting, it's worth talking it through with a licensed adviser who knows your full picture.