Highlights

• Division 296 would introduce an additional 15% tax on earnings attributable to the portion of an individual's total superannuation balance above AUD 3 million.
• High-net-worth Australians, including business owners, executives, and long-term SMSF members, are among the groups most likely to be affected.
• The proposed measure applies at the individual level across all super funds, with balances aggregated to determine exposure.
• Key areas of uncertainty include the treatment of unrealised gains, threshold indexation, and the final legislative design.

For a generation of successful Australians, superannuation has been more than a retirement vehicle. It has functioned as a low-tax savings environment, a long-term investment platform and, for many, a cornerstone of family wealth. The proposed Division 296 measure changes part of that calculus for a specific group: individuals whose total superannuation balance sits above $3 million. For high net worth households, the policy is less about a single tax line and more about how a long-trusted structure now fits within a broader wealth picture.

This article looks at the proposal through the lens of the high net worth segment. It profiles who these investors typically are, how their super is usually structured, and how the measure intersects with the rest of their balance sheet. The aim is to explain the mechanics calmly and clearly, not to alarm, and certainly not to advise.

Direct answer: a quick summary

Division 296 is a proposed Australian measure that, as drafted, would apply an additional 15 per cent tax on the share of superannuation earnings attributable to the portion of an individual's total superannuation balance above $3 million. It operates at the individual level across all funds, not fund by fund. The original proposal measured earnings using the year-on-year change in balance, which can include unrealised gains, and the $3 million threshold was not indexed. Start timing and design have shifted during debate, so final detail should be confirmed against legislation.

Why this matters now

Wealthy Australians have spent years optimising contributions, pension phases and fund choices around the existing concessional settings. A change that targets balances above a fixed dollar figure naturally prompts a review of those long-held assumptions. The reason it matters now is timing: the proposal has progressed far enough to require attention, yet remains subject to final design, so the window for considered, unhurried planning is open rather than closed.

There is also a structural reason. Because the threshold in the original design was not indexed, the cohort affected today is small, but commentators note it could widen over time as balances and asset values grow. For households building multi-decade wealth, a static threshold is a planning variable in its own right, separate from the headline rate.

Finally, high net worth investors rarely hold super in isolation. Their super sits alongside trusts, companies, property, listed portfolios and operating businesses. A shift in the relative attractiveness of one structure ripples through the others, which is why the measure is being discussed as a whole-of-wealth question rather than a narrow super question.

Who may be affected

The defining feature of the affected group is a total superannuation balance above $3 million, measured at year-end across every fund an individual holds. In practice this captures a recognisable profile of investor.

Business owners who have made large contributions over decades, often around the sale of a business or the use of available caps, frequently sit in this group. So do senior professionals and executives who have benefited from sustained high incomes and disciplined contribution strategies. Long-term self-managed fund members whose assets, particularly property or concentrated holdings, have appreciated strongly are another common profile.

Crucially, the test is individual. A couple may each have separate balances, and the threshold applies to each person rather than to the household. This means two members of the same family can be affected very differently, depending on how balances have accumulated between them over the years.

Initially, the affected share of fund members is modest, often described as a small fraction of all account holders, numbering in the tens of thousands. For the high net worth segment specifically, however, the concentration is far higher, which is why advisers to this group treat the proposal as directly relevant rather than peripheral.

What investors should understand

The core mechanic is proportional. The extra tax does not apply to an entire balance once it crosses $3 million. Instead, it applies only to the earnings attributable to the portion above the threshold. The proportion is calculated as the balance above $3 million divided by the total balance. An individual with a balance modestly above the line is therefore exposed on only a small slice of earnings, while someone well above it is exposed on a larger share.

The more debated feature of the original proposal is how earnings are measured. Rather than relying solely on realised income and gains, the original design looked at the movement in total balance across the year, adjusted for contributions and withdrawals. Because asset values can rise without a sale, this approach could bring unrealised gains into the calculation. This element drew significant commentary and should be treated as a feature of the original proposal rather than settled law.

Investors should also understand the liability sits with the individual, who can generally elect to pay the amount personally or from within super. That choice has cash-flow and compounding implications worth discussing with a licensed adviser, particularly where assets are illiquid.

SMSF and managed super fund considerations

High net worth Australians are over-represented among self-managed superannuation fund (SMSF) members, and SMSFs often hold the kinds of assets most relevant to this discussion: direct property, unlisted investments and concentrated parcels of shares. These assets can be difficult to value precisely and are not always easy to liquidate, which makes the measurement of earnings and the funding of any liability more consequential than in a diversified pooled fund.

Members of large APRA-regulated funds face the same underlying rules, but the reporting and calculation are handled by the fund and aggregated by the regulator and the tax office. The practical experience differs: SMSF trustees carry direct responsibility for valuations and records, while managed fund members are more likely to receive the relevant figures prepared for them.

For households with assets spread across both an SMSF and one or more managed funds, the individual-level aggregation is the key point. Balances are combined to test the threshold, regardless of how many funds hold them, so a complete and accurate picture across every fund is essential.

Possible planning options to discuss with an adviser

The following are areas commentators discuss in general terms. They are not recommendations, and suitability depends entirely on individual circumstances. Each should be explored only with a licensed financial adviser and tax specialist.

• Reviewing the pace and size of future voluntary contributions in light of the threshold.
• Considering partial withdrawals and recontribution strategies where a member is eligible.
• Examining whether some wealth is better held outside super, for example through family or discretionary trusts.
• Exploring investment (insurance) bonds as an alternative tax-paid investment structure.
• Reviewing philanthropic structures for households with charitable intentions.
• Assessing liquidity, so any future liability can be met without forced asset sales.

Risks and uncertainties

The most important uncertainty is that the proposal is not finalised. Both the design and the start timing have shifted during debate, and elements such as the treatment of unrealised gains and the absence of indexation have attracted particular scrutiny. Acting decisively on a feature that may yet change carries its own risk.

There is also execution risk in any restructure. Moving assets out of super, unwinding holdings or establishing new structures can trigger capital gains tax, stamp duty, transaction costs and ongoing compliance obligations. A change made to manage one tax can create exposure to another, which is why a whole-of-wealth view matters.

Finally, super remains a concessionally taxed environment even under the proposal. For many high net worth investors, it may continue to be attractive on balance. The risk lies in over-reacting to a headline rather than weighing the measure within a complete financial plan.

What to watch before 1 July 2026

The source material frames a potential start around 1 July 2026, but this should be treated as indicative. Several signposts are worth monitoring before then.

• Whether the final legislation retains the original earnings methodology, including any treatment of unrealised gains.
• Whether the $3 million threshold is indexed in any final form.
• The confirmed commencement date and any transitional arrangements.
• Guidance on valuation and reporting, especially for hard-to-value SMSF assets.
• The mechanics for electing to pay any liability from super or personally.