Guide · 7 min read · Updated July 2026
In an SMSF, the fund's trust deed is the rulebook. Reg 6.17A is not the default; whether a BDBN lapses, what makes it valid, and who becomes trustee after your death are all set by the deed and the fund's governing rules. This is where DIY nominations go wrong most often.
Before signing anything, read (or have your SMSF adviser read) the current trust deed on two points: (1) how a binding nomination is validly made, and (2) whether it lapses. Older deeds often import Reg 6.17A by reference — in which case the 3-year lapse applies — but many modern deeds allow non-lapsing BDBNs with different execution rules. The High Court's decision in Hill v Zuda Pty Ltd [2022] HCA 21 confirmed that Reg 6.17A does not automatically apply to SMSFs; the deed governs.
This is often more important than the BDBN itself. When a member dies, the surviving trustee (or trustees) decide how the benefit is paid — within the constraints of any valid binding nomination. In a two-member SMSF with individual trustees, the survivor may end up as the sole decision-maker over your death benefit.
A corporate trustee gives cleaner succession: the deceased's legal personal representative can typically step in as director until the death benefit is paid, preserving balance in a blended-family situation.
SMSFs can pay death benefits as a lump sum, a pension to an eligible dependant, or a combination. Reversionary pensions inside SMSFs are common and powerful, but the interaction with the transfer balance cap and with any binding nomination needs to be worked through — a reversionary pension nomination on the pension documents will usually override a BDBN in respect of the same interest.
Book a review with your SMSF adviser specifically on succession — not the annual audit, not the investment strategy — and confirm three things: the deed permits the nomination type you want, the nomination is executed exactly as the deed requires, and the trustee structure after your death gives the right person control.
This guide is general information about Australian superannuation law, current as at July 2026. It is not personal financial, tax or legal advice. For advice about your circumstances, speak to a licensed adviser or solicitor.
SIS Reg 6.17A in plain English — why binding nominations expire, and how to know when yours does.
Spouses, children, financial dependants, interdependency partners — and who doesn't.
The four nomination types Australian funds offer, and when each is the right pick.