For many Australians, superannuation is the second-largest asset they own after the family home — and it is the one most likely to end up somewhere they did not intend. The reason is simple: your will has no automatic authority over your super. A binding death benefit nomination is the document that fixes that.
Why does superannuation not pass through your will?
Because you do not personally own it. Your super is held in trust by the fund's trustee for your benefit, which means it sits outside your estate. When you die, the trustee decides who receives the death benefit, guided by superannuation law and the fund's trust deed rather than by your will. A carefully drafted will that leaves everything to your spouse does not, on its own, direct a single dollar of your super.
What is a binding death benefit nomination?
A binding death benefit nomination (BDBN) is a formal written instruction to your super fund naming exactly who should receive your death benefit and in what proportions. Where the nomination is valid, the trustee must follow it — their discretion is removed. This is the difference between a binding nomination and a non-binding one, which is treated as a mere expression of wishes the trustee can consider and then disregard.
Who can you actually nominate?
This is where nominations most often fail. You can only nominate a dependant under superannuation law, or your legal personal representative — the executor of your estate. Dependants include a spouse or de facto partner, a child of any age, a person in an interdependency relationship with you, and a person financially dependent on you at the time of death. A nomination naming a sibling, a parent who is not financially dependent, or a friend is simply invalid, and the trustee's discretion snaps back into place.
Nominating your legal personal representative is often the more flexible route: the benefit flows into your estate and is then distributed according to your will, which lets you use testamentary trusts and other structures.
Do binding nominations expire?
Usually, yes. Most retail and industry funds use lapsing nominations that expire after three years and must be renewed. Countless families have discovered a nomination lapsed years earlier and nobody noticed. Some funds offer non-lapsing binding nominations, and a self-managed super fund can permit them where the trust deed is drafted to allow it. Whichever type you hold, diarise a review — and always review after a marriage, divorce, birth, or death in the family.
How is a super death benefit taxed?
Who receives it changes the outcome materially. A benefit paid to a tax dependant — typically a spouse or a minor child — is generally received tax free. A benefit paid to a non-tax dependant, most commonly a financially independent adult child, is generally taxed on the taxable component. For a large super balance, that difference can run well into six figures, which is why the nomination decision deserves proper advice rather than a form filled in quickly at the kitchen table.
What about self-managed super funds?
SMSFs bring both more control and more risk. The trust deed governs whether a binding nomination is permitted, whether it lapses, and how it must be executed — and a nomination that does not comply with the deed is worthless. There is also the question of who controls the fund after your death, since the surviving trustee has significant influence over how a benefit is paid. SMSF succession needs to be designed deliberately alongside your superannuation strategy, not assumed.
Where should the nomination be stored?
With your other estate documents, somewhere your executor and family can actually find it. Keep the signed original, note which fund it applies to and the date it was signed, and record the renewal date if it lapses. A secure digital estate vault such as Custodium Vault is a practical way to keep the nomination alongside your will, powers of attorney, and fund details so nothing is missed at the worst possible time.
Superannuation is too significant to leave to a trustee's discretion by default. The Metier Group works with Perth clients and their solicitors to make sure super nominations line up with the rest of the estate plan. Contact us to review where your super would actually go today.