Superannuation proceeds trusts: preserving tax-free death benefits for minor children

For Australian retirees and pre-retirees whose minor children or grandchildren might receive their superannuation death benefits, the Superannuation Proceeds Trust (SPT) is a specialised and often-overlooked estate-planning structure. An SPT is a particular kind of testamentary trust — created under a will — designed to receive a deceased member's super death benefit and hold it for the member's tax-dependants, most commonly minor children. It solves a specific problem: when a super member dies leaving minor children, the benefit has to be managed for children who lack the legal capacity to handle substantial capital, but the way the benefit is channelled can either preserve or compromise its favourable tax treatment. Super death benefits paid for the benefit of death benefits dependants are tax-free, and an SPT is built so that only tax-dependants can benefit from it — locking in that tax-free character. As a testamentary trust, it also delivers the concession that income distributed to minor beneficiaries is taxed at adult marginal rates with the tax-free threshold, rather than the punitive Division 6AA penalty rates. For families with young dependants, the SPT should be a standard consideration.

The problem the SPT solves sits at the intersection of the super death-benefit rules, a minor's incapacity to manage money, and the tax treatment of how a benefit is channelled. When a member dies with minor children as intended beneficiaries, the benefit can't simply be paid to the children — they lack capacity — so some structure is needed: pay it to the estate and let the will's general provisions apply, pay a child pension from the fund, or channel it into a purpose-built trust. The tax dimension is what complicates the choice. A death benefit is tax-free where it reaches tax-dependants, but if it flows through a general estate or a broadly-defined testamentary trust whose beneficiaries include non-dependants (adult independent children, charities, distant relatives), part of it can be treated as benefiting non-dependants — and taxed. The SPT removes that risk by restricting its beneficiary class exclusively to tax-dependants.

The tax-dependant definition is the foundation. For death-benefit purposes, a "death benefits dependant" under section 302-195 of the ITAA 1997 is the deceased's spouse or former spouse, the deceased's child aged under 18, a person who was financially dependent on the deceased at the time of death, or a person in an interdependency relationship with the deceased. Critically, an adult child of 18 or over who is not financially dependent is not a tax-dependant — they can still receive a death benefit (they are a dependant under the super law), but the taxable component they receive is taxed at around 17%. So an SPT works for minor children, a dependent spouse and other genuine financial dependants — but not for adult, independent children.

The tax-free preservation mechanism runs through section 302-10. Where a death benefit is paid to the legal personal representative (the estate), it is treated — to the extent that death benefits dependants of the deceased have benefited, or may be expected to benefit, from it — as if it had been paid to a dependant, and so is tax-free; to the extent non-dependants benefit, it is treated as paid to a non-dependant and taxed. An SPT, with a beneficiary class restricted to tax-dependants, is unambiguously for the benefit of dependants, so the benefit channelled into it keeps its tax-free character. The contrast is the general testamentary trust whose class mixes dependants (minor children) and non-dependants (adult children, charities): a benefit channelled into that risks being treated as partly for non-dependants and taxed on that portion. The SPT's exclusivity is the feature that protects the outcome.

The income tax inside the SPT adds a second benefit. As a testamentary trust resulting from a will, income distributed to a minor beneficiary is "excepted trust income" — taxed at the minor's adult marginal rates with the full $18,200 tax-free threshold (FY25-26), not the Division 6AA penalty rates that otherwise hit a minor's unearned income. So each minor beneficiary can receive up to the tax-free threshold of trust income a year, effectively tax-free: an SPT holding $800,000 and earning 5% ($40,000) split between two minor children gives $20,000 each, both within the threshold. The 2019 amendments narrowing the testamentary-trust concession require the income to come from "qualifying assets" — for an SPT the death-benefit proceeds and their accumulations are qualifying assets, so the concession holds.

The SPT versus child pension comparison is the key choice for benefits intended for minor children. The fund can pay a child death benefit pension directly to a minor, but with constraints: for a child without a qualifying disability, the pension must be commuted to a tax-free lump sum by age 25, it counts against the child's transfer balance cap under modified rules, and it runs within the fund's pension framework with limited flexibility. The SPT instead takes the benefit out of super as a lump sum into the trust: it can run beyond 25 (to whatever vesting age the will sets), income is taxed at adult marginal rates for the minor beneficiaries, and the trustee has flexibility over investments and distributions — but the capital now sits outside super's concessional environment, invested by the trustee. For young children whose capital must be managed for 15-20 years and where flexibility beyond 25 matters, the SPT is often preferable; some plans use both — a child pension for part and an SPT for the rest.

The estate-planning integration demands careful coordination between the will, the binding death benefit nomination (BDBN) and the trustee arrangements. The SPT must be drafted into the will by an experienced estate-planning lawyer — without those provisions the structure simply isn't there and the benefit flows through the general estate. The BDBN must be coordinated: typically it nominates the LPR (estate), with the will channelling the proceeds into the SPT; if the BDBN instead names a person directly (a surviving spouse, or the children), the benefit bypasses the SPT entirely. The trustee — a surviving spouse, a grandparent, a trusted relative or a professional — needs to be capable of running the trust for many years, with robust succession provisions in the deed, and where the children's guardian differs from the trustee the two must coordinate.

What do worked planning examples show?

These two cases show how the SPT applies in practice. Illustrative only — not personal advice — using FY25-26 figures.

Case 1 — Michael, 48, and Sarah, 46, with two children aged 8 and 11. Michael has $600,000 in super plus $500,000 of life insurance held within super, and they want to make sure that if both parents die the death benefit (potentially $1.1M) is managed for the children. On these facts an SPT fits well. Each will should establish an SPT with a beneficiary class limited to the couple's tax-dependants (their children while under 18, and any financial dependants), with the BDBN nominating the estate and the will channelling the benefit into the SPT. On Michael's death (with Sarah having died first or simultaneously), the $1.1M flows tax-free into the SPT — preserved because the beneficiary class is exclusively tax-dependants — and the trustee (perhaps Sarah's sister, or a professional) manages it for the children, distributing income for their maintenance and education taxed at adult rates with the tax-free threshold, until the trust vests when the younger child reaches, say, 25. On these facts the rational steps are to have an experienced estate-planning lawyer draft the SPT into both wills, coordinate the BDBNs, choose a capable trustee, and review as the children grow.

Case 2 — Patricia, 67, a widow whose son died last year leaving two children (her grandchildren), aged 6 and 9. She wants to leave a portion of her super to the grandchildren. On these facts the analysis is different, and it exposes the SPT's limit. The grandchildren are not Patricia's tax-dependants — they are not her children, and they were not financially dependent on her — so a super death benefit left to them is taxed (the taxable component at around 17%), and an SPT could not preserve tax-free treatment because the beneficiaries aren't her tax-dependants. On these facts the realistic position is that the death-benefit tax applies; a general testamentary trust in Patricia's will can still hold the inheritance for the grandchildren and deliver the minor-rate income concession, but it cannot manufacture the death-benefit tax-free treatment. The lesson is that the SPT's tax-free preservation works only where the beneficiaries are tax-dependants of the deceased member — for grandchildren who weren't financially dependent, it offers the income-tax concession but not the death-benefit exemption.

For retirees and pre-retirees with minor children or genuine financial dependants who might receive super death benefits, the Superannuation Proceeds Trust is a specific and valuable structure. The advice work is to identify whose death benefit could flow to minor tax-dependants, recommend SPT provisions in the will (with the beneficiary class precisely limited to tax-dependants), coordinate the BDBN with the strategy, model the SPT against the child-pension alternative, help choose a capable long-term trustee, and review as the children age. The SPT preserves the tax-free character of the death benefit and delivers the minor-rate income concession — a combination no general estate structure matches for families with young dependants.

Sources

• Australian Taxation Office (ATO) — Superannuation death benefits
• Australian Taxation Office (ATO) — Paying superannuation death benefits
• Australian Taxation Office (ATO) — Print
• Australian Taxation Office (ATO) — Death of an smsf member
• Australian Taxation Office (ATO) — Income of minor children