Most SMSF trustees spend years building their balance. Few have thought carefully about the one document that determines where it goes when they die.
Your superannuation is governed by superannuation law and your fund’s trust deed - not your will. A binding death benefit nomination (BDBN) is the written instruction that changes who controls that decision. When it is valid, your trustee is legally bound by it. Without one, the decision belongs to someone else.
Key Takeaways
- Superannuation does not form part of your estate. Your will does not control where your super goes.
- A binding death benefit nomination (BDBN) is a written instruction that legally binds your fund’s trustee to pay your super to specific people.
- You can only nominate a dependant or your legal personal representative - not any person of your choosing.
- Lapsing BDBNs expire after 3 years. Many trustees do not realise theirs has quietly become invalid.
- Non-lapsing BDBNs do not expire, but your trust deed must specifically permit them.
- For SMSFs, BDBN validity is determined by the trust deed - not by the SIS Regulations that apply to APRA-regulated funds.
- Corporate trustee structures have additional requirements that individual trustee arrangements do not.
Contents
- Why Your Will Does Not Control Your Super
- Who You Can Nominate
- What Makes a BDBN Valid in an SMSF
- Lapsing vs Non-Lapsing: The Trap That Catches Trustees Off Guard
- Corporate Trustee Structures: Additional Considerations
- Tax on SMSF Death Benefits: What Beneficiaries Pay
- Common Pitfalls
- SMSF Trustee Checklist: Binding Death Benefit Nominations
- How to Update Your BDBN
- Frequently Asked Questions
Why Your Will Does Not Control Your Super
Your superannuation sits inside a trust - your SMSF. When you die, the rules governing where your super goes come from superannuation law and your fund’s trust deed. Your will controls your bank accounts, investment properties, and personal assets held outside super. It stops at the SMSF boundary.
Without a valid BDBN in place, the trustee of your fund decides who receives your super benefit. In a two-member SMSF, that typically means the surviving spouse or co-trustee makes the call. In a fund with a corporate trustee, it means the directors of that company. Either way, the decision is theirs - not yours, and not your estate’s.
A BDBN changes that. It is a written instruction from you, as a member, directing how your super benefit is to be paid after your death. When it is valid, the trustee is legally bound by it. The discretion is removed.
For more on your obligations as an SMSF trustee across governance and estate planning, see our SMSF Trustee Obligations guide and the SMSF Death Benefits and Estate Planning guide.
Who You Can Nominate
Superannuation law restricts who can receive a death benefit. You can only nominate a dependant or your legal personal representative (LPR).
| Category | Examples | Notes |
|---|---|---|
| Spouse or de facto partner | Legal spouse, de facto partner | Lump sum generally tax-free |
| Children | Any age | Tax-free only if financially dependent at time of death; otherwise taxed |
| Interdependency relationship | Mutual domestic care and support | Strict ATO test applies |
| Financially dependent persons | Anyone relying on you for financial support | Must be dependent at the time of death |
| Legal Personal Representative | Executor or administrator of your estate | Routes to your will; tax implications apply |
You cannot nominate a friend, a business partner, or a sibling unless they meet one of the definitions above. If you do nominate an ineligible person, the nomination is not binding to that extent - the trustee exercises discretion for that portion.
Note on adult children: Children of any age are dependants under superannuation law and eligible to receive death benefits directly. However, tax-free treatment for adult children requires them to be financially dependent on you, or in an interdependency relationship with you, at the time of death. Independent adult children who receive a direct death benefit will pay tax on the taxable component. This is covered in the tax section below.
Nominating your Legal Personal Representative
Your LPR is the executor or administrator of your estate. Nominating your LPR directs your super into your estate, where your will then controls distribution. This is a legitimate strategy, but it does not create a tax advantage for financially independent adult children: whether the benefit arrives directly or through the estate, the taxable component is generally taxed.
This is a decision worth working through carefully with an SMSF specialist or estate planning lawyer before acting.
What Makes a BDBN Valid in an SMSF
This is where many trustees assume the rules are straightforward - and where they are not.
For APRA-regulated funds (industry and retail funds), binding death benefit nominations are governed by regulation 6.17A of the Superannuation Industry (Supervision) Regulations 1994. That regulation sets out execution requirements and a 3-year lapsing rule. However, regulation 6.17A does not apply to SMSFs. This is confirmed by ATO SMSF Determination 2008/3.
For SMSFs, the validity of a BDBN is determined by the fund’s trust deed. The ATO’s position is that SMSF trust deeds can permit binding nominations in a manner that goes beyond - or differs from - regulation 6.17A, provided any nomination is otherwise consistent with superannuation law on who can receive a death benefit.
In practice, most modern SMSF trust deeds require the following for a BDBN to be valid:
- It must be in writing
- It must be signed and dated by you
- It must be signed in the presence of 2 witnesses, both of whom must also sign and date the document in your presence
- Both witnesses must be over 18 and neither can be named as a beneficiary in the nomination
- It must comply with your fund’s specific trust deed requirements
The witness execution requirement is a common point of failure. A nomination where the witnesses signed the document separately - rather than in the presence of the member - may be invalid regardless of everything else being correct.
The trust deed requirement matters more than most trustees realise. Not all trust deeds are the same. Some older deeds impose additional requirements beyond the standard minimum, do not permit non-lapsing BDBNs, or do not clearly address binding nominations at all. If your deed does not support your chosen nomination type, the nomination may be invalid regardless of how carefully it was executed.
Trust deeds are sometimes updated or replaced. When reviewing your BDBN, confirm your administrator or SMSF lawyer is working from the current deed and that no amendment affects the nomination type you want.
If you are unsure what your trust deed allows, your SMSF administrator can confirm in minutes. For what the ATO is currently focused on in SMSF compliance, see our 2026 ATO compliance update for SMSF trustees.
Lapsing vs Non-Lapsing: The Trap That Catches Trustees Off Guard
There are two types of BDBNs, and the difference matters enormously. In 2026, with many SMSFs established 10 to 20 years ago, quietly lapsed nominations are one of the most widespread gaps in SMSF estate planning.
Lapsing BDBNs expire after 3 years from the date of signing. If you do not renew before expiry, the nomination becomes invalid and trustee discretion is restored. A 2022 lapsing BDBN may have expired in 2025. A 2023 lapsing BDBN may expire in 2026. Many trustees set up a BDBN when they established their fund and have not thought about it since.
Non-lapsing BDBNs do not have an expiry date. They remain in force until you revoke or replace them. Non-lapsing BDBNs in SMSFs are well-established at law and widely supported by modern trust deeds - but they are not automatic. Whether your fund can accept a non-lapsing nomination depends entirely on your specific deed. Some older deeds do not permit them.
This is one of the most common and most costly gaps in SMSF estate planning. It is also entirely preventable.
When did you last check yours?
Your SMSF administrator or accountant will have your current BDBN on file. A quick email today asking them to confirm the nomination type, the signing date, and whether it is still in force takes minutes. If the answer is “we can’t find it” or “it expired in 2024” - you now know what to do.
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Corporate Trustee Structures: Additional Considerations
If your SMSF uses a corporate trustee rather than individual trustees, there is an additional layer to consider.
Corporate trustees offer continuity advantages. The company continues as trustee regardless of which directors die, and new directors can be appointed without restructuring the fund. But continuity only helps if the BDBN is properly in place. If a director dies, the remaining directors may have discretion over benefit payments unless the BDBN is valid and explicitly binding on the company as trustee. Some older deeds are silent on this point.
This is not a reason to avoid a corporate trustee structure. It is a reason to give the BDBN review specific attention.
Pension phase and reversionary nominations
If you are drawing an account-based pension from your fund, a reversionary pension nomination works alongside a BDBN rather than replacing it. A reversionary nomination directs the pension to continue paying to a nominated dependant after your death, rather than being commuted to a lump sum death benefit.
Many trust deeds give a reversionary nomination precedence over a BDBN for the pension component. Confirm with your administrator how your deed prioritises the two if you have both in place.
For more on managing your fund in pension phase and the rules that apply, see our SMSF Pension Guide.
Tax on SMSF Death Benefits: What Beneficiaries Pay
The tax treatment of an SMSF death benefit depends on who receives it and how.
Death benefits paid to a tax dependant - spouse, de facto partner, financially dependent adult children, or someone in an interdependency relationship - are generally tax-free when paid as a lump sum. The fund does not withhold tax and the recipient does not include it in their tax return.
Death benefits paid to non-dependants - typically financially independent adult children - are taxed on the taxable component. For a taxed element, the rate is 15% plus the Medicare levy. For an untaxed element (for example, from a period of defined benefit membership), the rate is 30% plus the Medicare levy. These rates apply whether the benefit is paid directly or via the estate - routing through the LPR does not improve the tax outcome for non-dependants.
Death benefits paid as an income stream have different treatment depending on the recipient’s age and the composition of the benefit. If the recipient is under 60, the taxable component of pension payments is generally assessable income (with tax offsets potentially available). Above 60, pension payments from a taxed fund are generally tax-free.
For members with a total super balance above $3 million, Division 296 tax from 1 July 2026 adds a further layer of complexity to estate planning decisions. The timing of withdrawals, the composition of the fund’s assets, and decisions about structuring benefits before or after death can all interact with Division 296 calculations. See our Division 296 guide for SMSF trustees for more.
For the ATO’s full guidance on how death benefits are taxed, see the ATO’s superannuation death benefits page.
Common Pitfalls
Most BDBN problems fall into five categories.
1. Expired or lapsed nomination. A lapsing BDBN signed more than 3 years ago is now invalid. Trustee discretion has been fully restored. This is the most common gap and the easiest to miss.
2. Incorrect witness execution. Witnesses who signed at a different time or place from the member, or who were not both present simultaneously, may invalidate the nomination.
3. Trust deed does not support the nomination type. A non-lapsing BDBN that the trust deed does not permit is invalid regardless of how carefully it was executed. Some deeds only allow lapsing nominations. Some older deeds are silent on the question entirely.
4. Outdated beneficiaries. A nomination made before a divorce, death of a named beneficiary, remarriage, or change in financial dependants may no longer reflect your intentions.
5. Corporate trustee not properly bound. A nomination that binds individual directors but not the company as trustee provides weaker protection than intended in a corporate trustee structure. Confirm the deed makes the nomination binding on the company.
SMSF Trustee Checklist: Binding Death Benefit Nominations
1. Does your fund have a BDBN at all?
Many trustees assume one is in place when it either was never completed or was lost when a previous administrator changed over. Your current administrator should have the original on file.
2. If lapsing, when was it signed?
If more than 3 years ago, it has expired. Locate the original document and confirm the date on the member’s signature. The lapsing clock runs from the signing date, not from when it was received by the administrator.
3. Does your trust deed support your nomination type?
If you want a non-lapsing BDBN, confirm your deed explicitly permits it. Also confirm you are working from the current version of the deed - not an earlier version that may have been replaced.
4. Do the nominated beneficiaries still reflect your intentions?
Circumstances change. A nomination made before a divorce, remarriage, death of a named beneficiary, estrangement, or a shift in financial dependants may no longer reflect your wishes - even if it is technically still valid.
5. If you use a corporate trustee, is the nomination explicitly binding on the company?
Your SMSF administrator or an SMSF specialist can confirm whether your deed makes the nomination binding on the corporate trustee as a legal entity, not just on individual directors.
How to Update Your BDBN
Updating a BDBN is straightforward, but execution matters. An informal or incorrectly signed document may be invalid even if everyone’s intentions were clear.
Step 1: Obtain the correct form from your SMSF administrator
Never use a generic template. The form must comply with your specific trust deed. Your administrator will have the correct version for your fund. If they cannot provide one, your SMSF lawyer can draft a deed-compliant nomination.
Step 2: Decide who to nominate and in what proportions
You can nominate multiple dependants and/or your LPR, with percentages adding to 100%. Consider the tax implications, particularly if financially independent adult children are involved. Some modern deeds allow cascading or substitution clauses if a beneficiary predeceases you.
Step 3: Complete and sign the form in front of two witnesses
Both witnesses must be physically present when you sign. You must be physically present when they sign. Everyone signs and dates the document on the same occasion. Witnesses must be over 18 and cannot be named beneficiaries.
Step 4: Return the completed form to your administrator
Keep a copy for your records. Your administrator holds the original and updates their records. If you have a corporate trustee, confirm that the nomination has been formally accepted by the company as trustee.
Step 5: Diarise a review date
For lapsing nominations, set a reminder for 2 years and 9 months from signing. Even for non-lapsing nominations, annual review is good practice.
For the ATO’s guidance on trustee obligations when an SMSF member dies, see the ATO’s Death of an SMSF member page.
Frequently Asked Questions
What is a binding death benefit nomination?
A BDBN is a written instruction from a super fund member to the trustee of the fund, directing how the member’s super benefit is to be paid after death. When it meets the requirements set out in the fund’s trust deed, the trustee is legally bound by it and cannot exercise discretion over who receives the benefit.
Does my will control my superannuation?
No. Superannuation sits inside a trust and is governed by superannuation law and your fund’s trust deed, not your will. Your will controls your personal estate - bank accounts, property, shares held outside super. It does not control your SMSF balance unless you have specifically nominated your legal personal representative and directed the benefit into your estate.
How long does a binding death benefit nomination last?
A lapsing BDBN is valid for 3 years from the date of signing. After that, it expires and trustee discretion is restored. A non-lapsing BDBN does not expire but requires your trust deed to specifically permit it. Many older trust deeds do not.
Who can I nominate in a BDBN?
You can only nominate a dependant (spouse, de facto partner, children of any age, financially dependent persons, or those in an interdependency relationship with you) or your legal personal representative (the executor or administrator of your estate). You cannot nominate a friend or business partner unless they meet one of the dependant definitions under superannuation law.
What happens if my BDBN is invalid when I die?
If your BDBN is invalid because it has lapsed, was not executed correctly, or is not supported by your trust deed, the trustee regains full discretion over how your super benefit is paid. In a two-member SMSF, that typically means the surviving member makes the decision. This may or may not align with your intentions.
What happens if a nominated beneficiary dies before me?
If a nominated beneficiary predeceases you and you have not updated your BDBN, the outcome depends on your trust deed. In most cases, the trustee exercises discretion over that share. Some modern deeds allow cascading or substitution clauses. If this matters to you, ask whether your deed includes them and update the nomination directly.
Can a BDBN be challenged after death?
A BDBN can be challenged if it was not properly executed, has lapsed, nominates an ineligible beneficiary, or conflicts with the trust deed. Courts apply strict compliance requirements to execution, so careful signing is the best protection.
Can I make a BDBN under a power of attorney?
In most cases, no. Many SMSF trust deeds expressly exclude binding death benefit nominations from the powers that an attorney can exercise on a member’s behalf. The personal nature of the nomination is the reason - it is a decision about how retirement savings pass on death, which most deeds treat as a decision only the member can make. Some deeds may permit it in limited circumstances. Check your specific deed, and do not assume a general power of attorney extends to making or changing a BDBN without confirmation from your administrator or SMSF lawyer.
Is a BDBN the same as a reversionary pension nomination?
No. A reversionary pension nomination applies to account-based pensions already in payment. It directs the pension to continue paying to a nominated dependant after your death, rather than being commuted to a lump sum death benefit. BDBNs and reversionary nominations serve different purposes and can coexist in the same fund. Many trust deeds give the reversionary nomination precedence over the BDBN for the pension component - confirm how your deed prioritises the two if you have both. For more on managing your fund in pension phase, see our SMSF Pension Guide.
Disclaimer: This article is for educational purposes only and does not constitute financial advice. Always consult a licensed financial adviser or SMSF specialist before making decisions about your fund.