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Highlights

• The period before the proposed July 2026 commencement provides high-net-worth Australians an opportunity to review super balances, liquidity, and wealth structures in an orderly manner.
• Division 296 would apply an additional 15% tax to earnings attributable to the portion of an individual's super balance above $3 million.
• SMSF members may need to pay particular attention to liquidity management and asset valuations, especially where portfolios contain illiquid investments.
• Legislative details, including the treatment of unrealised gains, threshold indexation, and commencement timing, remain key factors to monitor before making major decisions.

For high-net-worth Australians, the period leading up to July 2026 is shaping up as an important window for reviewing how wealth is held inside superannuation. The proposed $3 million super tax, known formally as Division 296, would introduce an additional layer of tax on the largest balances, and the run-up to its framed start date is the natural time to take stock.

This article is a practical orientation rather than a technical deep dive. It sets out the timeline, the preparation questions worth raising with a licensed adviser, and a checklist of the structures and decisions that may warrant a fresh look. The tone is deliberately measured: the goal is readiness, not reaction.

Because the measure has evolved during debate and its final shape rests on legislation, every step below should be read as something to explore and confirm, not as a fixed instruction.

Direct answer: High-net-worth Australians should understand that the $3 million super tax (Division 296) would add 15 per cent to the earnings attributable to the part of their total superannuation balance above $3 million, assessed individually. Before July 2026, the practical priorities are reviewing balances, liquidity and structures with a licensed adviser, while waiting for the final legislative detail. As proposed, the measure has been framed to commence on 1 July 2026, but the start date and design remain subject to final legislation.

Why this matters now

The case for paying attention is partly about timing and partly about scale. With the measure framed around a 1 July 2026 commencement, the months beforehand are when reviews can be conducted in an orderly way rather than under pressure. Rushed decisions late in the cycle tend to be costlier and less considered.

For households with substantial superannuation, the proposal also touches a core assumption: that super is the default home for long-term tax-effective savings. Division 296 does not overturn that assumption, but it does add nuance for the largest balances, and high-net-worth families are precisely the group for whom that nuance is most relevant.

There is a second-order reason as well. Many high earners who are not yet at the threshold are on a trajectory towards it. Reviewing contribution patterns and asset location now, while there is time, is easier than adjusting after a balance has already crossed the line.

Who may be affected

The measure targets individuals whose total superannuation balance exceeds $3 million at the end of a financial year. The test aggregates all of a person's super across every fund, so spreading balances between accounts does not change the assessment.

On commonly cited figures, the initially affected group is small, often put at around 0.5 per cent of account holders, or tens of thousands of people. For the broader population, the measure is not a direct concern. Its design deliberately concentrates the additional tax on the highest balances.

High-net-worth Australians, by definition, are more likely to sit within or near this band, which is why the preparation framing is most useful for them. The absence of indexation in the original design also means that successful long-term investors who are below the threshold today could be captured in future, reinforcing the value of an early review.

What investors should understand

The headline mechanics

Division 296 would apply an additional 15 per cent tax on the share of earnings attributable to the balance above $3 million. It is layered on top of the existing 15 per cent on fund earnings, which is why a figure of around 30 per cent is often quoted for the relevant portion. The tax is assessed on the individual, who can generally elect to pay it personally or from their fund.

How the apportionment works

Only part of a year's earnings is exposed. The taxable share is set by the proportion (TSB minus $3 million) divided by TSB. A person with $5 million, for instance, has an excess of $2 million, giving a proportion of 40 per cent. Just that slice of earnings would face the additional tax, not the whole balance.

The earnings question

The original design measured earnings using the year-on-year change in the total balance, adjusted for contributions and withdrawals. That method could capture unrealised gains, paper increases in asset values, which became a major point of debate. This is a feature of the original proposal, not settled law, and is among the items to confirm before relying on any particular treatment.

The road to July 2026: a practical timeline

A sensible way to approach the period before the framed start date is to break it into stages rather than treat it as a single deadline.

Now: understand and gather

The first stage is information. That means confirming your current total superannuation balance across all funds, understanding the composition of your assets, and noting how close you are to the threshold. It is also the time to engage a licensed adviser if you have not already.

Mid-cycle: review structures and liquidity

Once the picture is clear, the focus shifts to whether existing structures still suit your goals and whether there is sufficient liquidity to meet a possible liability. For those with illiquid holdings, this is an important conversation to have well before any tax could fall due.

Closer to commencement: confirm and finalise

As the legislative detail settles, the final stage is to confirm which assumptions held, adjust the plan accordingly and avoid acting on superseded design features. The discipline here is to wait for clarity rather than commit early to a design that may change.

A preparation checklist

The following checklist captures the kinds of items high-net-worth individuals commonly raise with advisers. It is a prompt for discussion, not a set of recommendations.

• Confirm your combined total superannuation balance across all funds at the most recent year-end.
• Identify how much of your balance sits above $3 million and the resulting proportion under the formula.
• Assess the liquidity within your fund and your capacity to meet a liability if one arises.
• Review the timing and amount of voluntary contributions in light of the threshold.
• Examine the location of assets across super and non-super structures.
• Ensure valuations of illiquid or lumpy assets are current and well documented.
• Clarify, with your adviser, whether you would prefer to pay any liability personally or from your fund.
• Schedule a review point for when the final legislation is clear.

SMSF and managed super fund considerations

High-net-worth Australians frequently hold wealth in self-managed superannuation funds (SMSFs), which can magnify the practical issues. SMSFs often contain concentrated or illiquid assets, and a liability calculated on year-on-year balance changes could arise in a year when little cash has been received. Trustees should think carefully about how such a liability would be funded.

Valuation discipline also becomes more important. Where assets such as property or unlisted investments form a large part of an SMSF, the timing and reliability of valuations can directly influence the assessed figure. Sound record-keeping supports both compliance and clearer decision-making.

For those in large managed funds, the mechanics of liquidity and valuation are generally handled within the fund's pooled structure. The individual still receives an assessment based on their share and still chooses how to pay. Whichever vehicle is used, the measure follows the person.

Possible planning options

Advisers and tax specialists discuss several areas that some high-net-worth individuals consider. These are options people raise, not recommendations, and their appropriateness depends on personal circumstances and the final law.

• Reviewing voluntary contributions and their effect on balance growth.
• Partial withdrawals or recontribution arrangements where eligible.
• Holding some assets through alternative structures outside super.
• Family or discretionary trusts for organising household wealth.
• Investment or insurance bonds as a vehicle held outside super.
• Philanthropic or charitable structures for those with giving goals.

Every option carries costs, rules and trade-offs, and none replaces the genuine advantages superannuation can still offer. Tailored, licensed advice is essential before acting on any of them.

Risks and uncertainties

The principal uncertainty is legislative. The proposal has changed during debate, and features such as the start date, the treatment of unrealised gains and indexation may differ in the final law. Preparing on the basis that the original design will pass unchanged is a risk in itself.

A related risk is acting too early. Restructuring before the detail is settled can crystallise costs or trigger consequences that outweigh any benefit. For many affected individuals, the actual impact is more modest than the headlines imply, because only a portion of earnings on the excess is taxed.

Finally, there is the long-term issue of an unindexed threshold drawing more people in over time. That argues for monitoring rather than immediate, sweeping change.

What to watch before 1 July 2026

• Whether the earnings calculation keeps the balance-change method or shifts to realised gains.
• Any move to index the $3 million threshold.
• Confirmation of the commencement date and transitional rules.
• Guidance on valuing illiquid assets and on assessment timing.
• Detail on the election to pay the tax personally or from the fund.