Here’s How ASX Investors Should Prepare for CGT Changes And The Stocks That Could Become More Lucrative As a Result

For ASX investors, this ‘tax time’ is the most consequential in years. Australia’s capital gains tax regime is on the verge of its most consequential shift since the Howard government replaced cost‑base indexation with the 50% discount in 1999.

As the Albanese government approaches the May 2026 budget under pressure on housing affordability, and with the Parliamentary Budget Office estimating A$247bn in foregone revenue from the discount over the next decade, Treasurer Jim Chalmers has all but confirmed that reform is coming. After weeks of speculation it could be cut to a lower % but only for established properties, now it appears it will be a return to CPI indexation for almost all asset classes including shares

‘Investors will be taxed only on the portion of a gain that exceeds inflation’, you could say. That framing sounds relatively benign, and in some respects it is. But equity investors should not assume the change is neutral. The reform reshapes the after‑tax return profile of growth‑oriented investing and introduces new incentives around how capital is deployed across asset classes, sectors and geographies.

The question is what investors should actually do. We hope we can provide some general points for investors to consider…of course, there is more bad than good news, but don’t discount the good news at all.

ASX investors need to understand what indexation really means

A clarification is essential. Indexation does not automatically mean investors pay less tax than under the 50% discount. Which method is more favourable depends on two variables: the holding period and the gap between inflation and the asset’s capital growth.

Consider an investor who holds a stock for a decade through 7% annual price appreciation and 3% average inflation. Indexation is significantly worse than the 50% discount in that scenario. The discount exempts half the nominal gain; indexation strips out only the inflation component, leaving the bulk of the real gain taxable.

The PBO has noted that the revenue impact of the switch is relatively small in the current environment, but that is highly sensitive to assumptions about future inflation and asset price growth. For investors in high‑growth equities, particularly technology or small‑cap names where compound returns can sit well above CPI, indexation is materially less generous than the current regime.

The corollary is that indexation becomes relatively more attractive in periods of elevated inflation and for assets with modest real returns above CPI. That nuance matters when assessing which parts of the equity market are most exposed.

Growth stocks bear the greatest burden

Investors holding high‑growth, low‑yield equities face the sharpest relative deterioration under indexation. A position in a software company compounding at 20% annually for a decade produces a nominal gain far beyond what inflation adjustments will offset. The taxable gain under indexation would be substantially higher than under the 50% discount. Sectors with structural growth tailwinds, including technology, healthcare, rare earths, critical minerals and fintech, become less attractive on a post‑tax basis than they were before the reform.

This does not invalidate the pre‑tax investment case for quality growth businesses. But at the margin, investors may reasonably demand a higher hurdle rate to justify holding pure‑growth positions through to a taxable event. For those already sitting on material embedded gains, trimming and recycling before budget night is a rational short‑term response, assuming gains accrued to that date are grandfathered at the 50% rate.

The case for dividend stocks and franking credits strengthens

If the reform compresses the after‑tax appeal of capital gains, it implicitly improves the relative attractiveness of income‑oriented investing. This is where franking credits become central to the Australian equity story. Australia’s dividend imputation system is unique among major markets. When a company pays a fully franked dividend, shareholders receive a credit for tax already paid at the corporate level, effectively eliminating double taxation.

For a domestic investor on the top marginal rate of 47%, a fully franked dividend from one of the major banks or a company like Reece or ARB Corporation generates a grossed‑up yield that is substantially more tax‑efficient than realising an equivalent gain under indexation. Mature, cash‑generative sectors such as financials, consumer staples, infrastructure and industrials become structurally more attractive on a post‑reform, after‑tax basis. In our view, this represents a genuine and durable shift in the return calculus rather than a temporary reallocation.

There is also a practical implication for portfolio construction. Investors who have historically run concentrated positions in low‑ or no‑dividend growth stocks as a CGT deferral strategy may find the deferral trade less compelling. The benefit of sitting on an unrealised gain to avoid triggering CGT is reduced when the ultimate tax bill is higher under indexation. Dividend‑paying stocks, conversely, deliver returns in a form that the tax system now treats more favourably.

Are Australian shares still an attractive asset class?

This is the right question to ask. The answer — with some caveats — is yes. The reform does not alter the fundamental operating environment for ASX‑listed companies. Earnings, balance sheets and competitive positions are unaffected by how their shareholders are taxed. What changes is the investor’s take‑home return on gains, and that affects valuation multiples at the margin.

The behavioural risk is worth taking seriously. If a meaningful share of domestic capital reallocates away from growth equities toward property, overseas assets or simply cash, liquidity and pricing efficiency in pockets of the ASX, particularly mid‑ and small‑caps, could weaken. That is a systemic risk to monitor rather than a reason to exit the market.

The ASX retains some structural advantages: a resource‑rich economy with strong Asian trade links, a large superannuation system that channels domestic savings into listed equities at scale, and a franking credit regime that remains genuinely differentiated. Superannuation, importantly, faces a concessional 15% tax rate on earnings, meaning the CGT reform is largely irrelevant inside a super fund. That alone strengthens the argument for maximising concessional contributions as a response strategy.

The case for looking offshore

The reform also shifts the relative attractiveness of overseas equities at the margin. Australian investors already have access to global markets at low cost via ETFs and direct stock purchases, and the post‑tax argument for diversifying offshore is modestly stronger. Foreign shares do not carry franking credits, so that advantage disappears.

But for investors seeking genuine capital growth, including US technology, European industrials and Japanese small‑caps, the tax treatment under indexation is the same whether the asset is listed in Sydney or New York. There is no longer a uniquely Australian reason to concentrate in domestic equities purely for tax purposes. Currency risk, foreign withholding taxes and the absence of dividend imputation are real offsetting factors.

We would not suggest abandoning the ASX. But a thoughtful allocation to global equities, particularly through low‑cost ETFs with diversified geographic and sector exposure, is a reasonable response to a domestic tax regime that is becoming less generous to capital appreciation.

Conclusion

The shift from a 50% CGT discount to cost‑base indexation is not a catastrophe for equity investors, but it is a material change that warrants deliberate portfolio review. Growth‑oriented investors face a higher effective tax rate on realised gains in most scenarios. Dividend‑paying, franked‑income stocks become relatively more attractive, particularly for those outside superannuation.

Australian shares remain a compelling asset class, especially for income investors who can leverage the imputation system, but the case for meaningful offshore exposure has strengthened. And for all investors, the most immediate action may simply be to take stock of embedded gains and, where grandfathering is confirmed, consider whether crystallising them before the reform takes effect is the most rational path. That is not a panic response; it is basic tax planning.