Australia does not have an inheritance tax.
It has something that functions very much like one for a specific group of people: adult children inheriting their parents' superannuation.
Most people discover this after the death rather than before it, which is unfortunate, because almost everything that reduces it has to be done years in advance.
Who counts as a dependant, and who does not
For superannuation tax purposes, a death benefit dependant is a spouse — including a de facto or former spouse — a child under eighteen, a person in an interdependency relationship, or someone who was financially dependent on you at the time of death.
A benefit paid to a dependant is tax-free.
An adult child over eighteen is not a dependant, unless they were genuinely financially dependent on you. Being your child is not enough. Being close to you is not enough. Living in the house is not, on its own, enough.
This is the point where the ordinary meaning of the word and the tax meaning part company, and the gap is expensive.
What the tax actually is
Superannuation is made of two components, and only one of them is taxed.
The tax-free component — broadly, what came in as after-tax (non-concessional) contributions — passes with no further tax, to anyone.
The taxable component — concessional contributions and all the investment earnings — is taxed when paid to a non-dependant:
- Taxed element: 15% plus the 2% Medicare levy — 17% effective. - Untaxed element: 30% plus Medicare — 32% effective.
Most people only ever have a taxed element. But an untaxed element is created when the fund has claimed a deduction for insurance premiums and the death benefit includes insurance proceeds — which is common in SMSFs holding life cover. It is worth knowing which one your fund would produce.
A worked example makes the size of it visible. A member dies with $900,000, of which 40% is tax-free ($360,000) and 60% is taxable ($540,000). An adult child receiving it pays 17% on the taxable component: $91,800.
Nothing about that was avoidable at the moment of death. All of it was addressable in the years before.
Why routing it through the estate does not help
A common belief is that leaving super to the estate, and letting it pass under the will, changes the tax result.
It does not. The tax on the taxable component is assessed on the ultimate beneficiary's status regardless of the path — whether the benefit is paid directly as a lump sum or flows through the legal personal representative.
What routing through the estate can do is give you control over the distribution and allow the use of a testamentary trust. Those are real advantages. They are not tax advantages on this particular tax.
What actually reduces it
Every strategy here works by increasing the tax-free proportion of your balance over time. Under the proportional rule, you cannot withdraw only the taxable part — every payment comes out in the same ratio as the account. So the ratio is the thing to move.
Non-concessional contributions. Every dollar contributed after tax adds a dollar to the tax-free component. A member who has spent years making non-concessional contributions arrives at death with a materially different mix from one who only ever salary-sacrificed. Moving from 40% tax-free to 70% or 80% is achievable over a decade and changes the eventual bill substantially.
The recontribution strategy. Available once you have met a condition of release and can withdraw without tax — generally from 60. Withdraw a lump sum tax-free, then recontribute it as a non-concessional contribution. Every recontributed dollar is, by definition, tax-free component. For a member with contribution capacity this costs nothing immediately and can transform the death benefit profile.
It is bounded by the caps. For 2026-27 the non-concessional cap is $130,000, with up to $390,000 available under the three-year bring-forward, subject to your total superannuation balance. It is a strategy executed in stages across several years, not in one afternoon.
Reversionary pensions to a spouse. A pension that automatically reverts to a surviving spouse continues tax-free and avoids the immediate death benefit event. It defers the question rather than answering it — the tax returns when the second spouse dies — but deferral over a decade or more is worth a great deal.
Withdrawing before death, where circumstances allow. Where death is foreseeable and the member is over 60, a lump sum withdrawn while alive is tax-free, and money outside super passes under the will without this tax. This requires timing that nobody can rely on, and it trades away the concessional environment while you are still living in it. It belongs in the conversation, not at the top of it.
The part specific to SMSFs
Superannuation does not pass under your will. It passes according to the trust deed and the fund's rules.
In an SMSF, if there is no valid binding death benefit nomination — or if yours has lapsed, which many do after three years — the surviving trustees decide where the money goes, among eligible beneficiaries, in whatever proportions they choose.
That discretion is not bound by your will. It is not bound by a letter of wishes. And in an SMSF, the surviving trustee may be a second spouse, or one adult child who has an interest of their own in the answer.
A binding nomination, drafted to the deed's actual requirements and kept current, is the difference between an intention and an outcome. It is also the single cheapest item in this entire article.
What to do
Ask your fund for the current split between tax-free and taxable components. Most people have never seen this number, and it is the number the whole question turns on.
Check whether your binding death benefit nomination exists, is valid under your deed, and has not lapsed.
If your children are not financial dependants and your balance is substantial, ask specifically about a staged recontribution strategy — the earlier it starts, the more it can do.
The tax itself is not avoidable. Its size very largely is, given enough time, and time is the one input that cannot be added later.
Rates and caps stated here are current as at August 2026 and change with indexation and amendment. Confirm against ATO guidance before acting.
Adapted from The Self-Managed Super Fund Handbook by Paul Yang. See the books.