Australia Set to Scrap 50% Capital Gains Tax Discount in Budget Overhaul

Australia is preparing to replace its long-standing 50% capital gains tax discount with an inflation-indexed system, a reform that would significantly increase the tax burden on long-term investors including cryptocurrency holders. Treasurer Jim Chalmers outlined the full proposal in the federal budget announcement on Tuesday, 12 May 2026.

How the Current System Works

Australia's current CGT regime, introduced in 1999, gives individual investors a 50% discount on capital gains from assets held for more than 12 months. Under this system, only half of the profit from selling a long-held asset is added to taxable income and taxed at the individual's marginal rate.

Crypto assets fall squarely within the scope of this discount. An Australian investor who buys Bitcoin, holds it for more than a year, and sells it for a profit currently pays tax on only half of that gain. For investors in higher tax brackets, this discount represents a substantial concession.

What the Reform Would Change

Under the proposed replacement system, the 50% fixed discount would be scrapped. Instead, investors would adjust their cost base for inflation and pay CGT on the full real gain. This approach represents a return to the inflation indexing model that Australia used in the 1980s and 1990s, prior to the 1999 reforms.

In practical terms, the difference is significant. Inflation indexation adjusts the original purchase price upward in line with the CPI, meaning investors only pay tax on gains above inflation. In scenarios where an asset triples or quadruples in price over several years while inflation runs at 2% to 3%, the new formula could effectively double the CGT owed relative to the existing regime, especially for higher-bracket taxpayers.

Why Crypto Holders Are Particularly Exposed

The consultation paper explicitly includes cryptocurrencies among the assets covered by the reform, alongside shares, managed funds, and investment properties, with no mention of carve-outs for digital assets.

The implications for crypto investors are sharper than for many other asset classes. Because crypto portfolios often experience large price swings over relatively short periods, the removal of a time-based 50% discount directly undermines the strategy of holding assets beyond the 12-month mark to reduce tax. Under the new system, the tax outcome would depend on inflation and the timing of the sale rather than simply crossing the annual threshold.

The Government's Justification

Treasurer Jim Chalmers has framed the proposed reforms as addressing housing affordability and intergenerational unfairness. The existing discount has long been criticized for encouraging speculative investment in property at the expense of first home buyers, and the government has been under sustained pressure to act on housing costs.

Treasury estimates the CGT discount costs the government approximately AUD 21.8 billion in forgone revenue during the 2025-26 financial year. The reform is also being considered alongside changes to negative gearing rules.

Transition Arrangements

According to leaked details, assets purchased after budget night on 12 May 2026 would fall under the new rules, with full implementation expected by 1 July 2027. Assets purchased before that date would still receive the existing discount until mid-2027, after which the updated framework would apply to gains earned on those holdings.

Industry Criticism

The proposed changes have drawn strong pushback from investors and financial industry figures. Asset manager Geoff Wilson argued the reforms could hurt younger Australians who use shares and ETFs to build wealth, estimating that an investor contributing AUD 10,000 annually for 50 years at a 15% annual return could see taxes under the proposed system exceed AUD 5 million.

Portfolio manager Christopher Joye warned the reforms could push investors away from businesses and rental housing toward owner-occupied homes, which remain exempt from capital gains tax.