Binding death benefit nominations: how super gets distributed when you die — and why your will doesn't control it

Superannuation is not part of your estate by default. When you die, the super fund's trustee decides who receives your death benefit — unless you have a valid binding death benefit nomination (BDBN) directing them to a specific person or persons. This surprises many people, and the surprise often has consequences: super intended for a spouse flows to adult children, or vice versa, because no binding direction was in place. Understanding how BDBNs work, what makes one valid, and when it lapses is essential groundwork for anyone with a super balance worth talking about.

A binding death benefit nomination is a written instruction to the trustee of your super fund. "Binding" means exactly that: if the nomination is valid, the trustee has no discretion to override it and must pay the benefit as directed. The alternative — a non-binding nomination — is a statement of preference only. The trustee considers it, but can choose differently among eligible beneficiaries based on their own assessment of the member's circumstances. For most members who have a view on where their super should go, a non-binding nomination is inadequate protection.

Why is the lapsed BDBN such a common problem?

The most common estate planning failure in super is the lapsed BDBN. Most binding nominations are "lapsing" — they are valid for a maximum of three years from signing and then expire. Once lapsed, the nomination is at best treated as a non-binding preference, and the trustee recovers discretion. The typical pattern: a member signs a BDBN at retirement, files it, and never thinks about it again. Three years later it has lapsed. The member continues to believe the nomination is in effect right up until death. It isn't. Some funds — typically self-managed super funds and certain retail funds with specific deed provisions — offer non-lapsing BDBNs that remain valid until revoked. These avoid the lapse problem entirely but are not universally available. If you have a BDBN, the most immediate practical question is: when did you sign it?

Who can actually be nominated as a beneficiary?

Super law limits who can be nominated as a death benefit beneficiary. Valid nominations can only be made to a person who qualifies as a dependant under the Superannuation Industry (Supervision) Act — a spouse (including de facto and same-sex), a child of any age, a financial dependant, or someone in an interdependency relationship — or to the legal personal representative (the executor of the estate). Nominating the legal personal representative routes the death benefit through the estate, where the will then governs distribution. You cannot nominate friends, siblings without financial dependence, charities, or other non-dependants directly — they can only receive the benefit if the estate is nominated and the will directs it there.

How is a death benefit actually taxed?

The tax treatment of death benefits depends on who receives them, and this is where many people are caught out. Tax law uses a narrower definition of "dependant" than super law, and only payments to tax-law dependants are received tax-free. Tax dependants include a spouse or former spouse, a minor child (under 18), a financial dependant, and a person in an interdependency relationship. Adult children who are not financially dependent on the deceased parent — by far the most common situation — are not tax dependants. When a non-tax dependant receives a death benefit lump sum, the taxable (taxed element) of the benefit is taxed at 15 per cent plus the Medicare levy, and the taxable (untaxed element) — more commonly found in defined benefit funds — is taxed at 30 per cent plus the Medicare levy. The tax-free component is tax-free for everyone.

Confirmed "death benefits dependant" categories under ITAA 1997 s.302-195: (1) the deceased's spouse / former spouse; (2) the deceased's child UNDER 18 (regardless of disability); (3) any person with whom the deceased had an interdependency relationship; (4) any person who was a financial dependant of the deceased. Adult children with permanent disabilities do NOT have a separate standalone category — they qualify only if they meet the financial dependancy or interdependency tests. This is a frequent point of confusion: a permanently-disabled adult child is not automatically a tax dependant for super death benefit purposes; specific evidence of financial dependency or shared-living interdependency is needed.

How can the tax exposure to adult children be reduced?

For a retiree with a substantial super balance accumulated over a working life, the tax exposure when the taxable component flows to adult children can be significant. A member with $800,000 in super where the taxable component is $600,000 directed entirely to two adult children faces approximately $102,000 in tax (at 15 per cent plus 2 per cent Medicare levy on the taxable component). There are structural ways to reduce this exposure during the member's lifetime. A recontribution strategy involves withdrawing super at age 60 or over — where withdrawals are tax-free — and recontributing the proceeds as non-concessional contributions, which creates a tax-free component in the fund. Each recontribution round converts taxable to tax-free dollars, reducing the eventual tax cost to adult children. Another approach is simply withdrawing the super balance before death: amounts drawn at age 60 or over are tax-free to the member, and the net proceeds held outside super can then be directed by the will without any death benefit tax implication. These are personal advice matters and the right approach depends on the individual's full position — but both strategies are materially more useful if actioned in the years before death than after it.

How does a reversionary pension compare to a BDBN?

For couples who hold their super in account-based pensions, a reversionary pension is an alternative to a BDBN. Where a pension is set up as reversionary to a spouse, it continues paying automatically on the member's death — no trustee claim required, no BDBN process, no break in payments. The pension credit enters the surviving spouse's Transfer Balance Account 12 months after the date of death, which gives the survivor a deliberate window to review their position and commute any excess back to accumulation if needed. A BDBN to spouse and a reversionary pension can both achieve the same broad result — the surviving spouse receives the super — but the reversionary structure avoids trustee discretion entirely and maintains continuity of cash flow. The structural choice between them is worth making deliberately rather than by default.

What makes a BDBN valid?

For a BDBN to be valid, it must be in writing on the fund's prescribed form, signed by the member in the presence of two witnesses who are each over 18 and are not nominated beneficiaries, with the witnesses signing a declaration that they observed the signature. The total allocation across all beneficiaries must equal 100 per cent. Each beneficiary must qualify as a super-law dependant or as the legal personal representative. Common errors that invalidate nominations include a nominated beneficiary acting as a witness, an allocation that doesn't reach 100 per cent, the wrong fund's form being used, and nominations that have lapsed without renewal.

Self-managed super fund members face additional complexity. The trust deed governs whether and how BDBNs operate in an SMSF — some deeds permit non-lapsing binding nominations, others don't. The trustee structure matters too: where individual trustees are used rather than a corporate trustee, the death of a trustee-member triggers a series of events involving who now has authority over the fund. Disputes about SMSF death benefits — particularly where surviving trustees and intended beneficiaries are different parties — are increasingly reaching the courts. For SMSF members, reviewing the BDBN in isolation is insufficient; the deed, trustee structure, and succession arrangements need to work together, and a solicitor experienced in SMSF law is the right person to coordinate that review.

Sources

• Australian Taxation Office (ATO) — Superannuation death benefits