B Budget 2026 Claims Monitor Budget 2026 tax claim analysis

Fact-check

Public post on zero-cost-base businesses and a claimed 47 per cent exit tax

This submission mixes one correct scope point, one correct arithmetic point, and one overstated tax-outcome claim. Budget 2026 does apply the CGT redesign beyond residential property, and a zero starting cost base does stay at zero under indexation. But the jump from that arithmetic point to a universal 47 per cent tax on all self-funded business sale gains leaves out key variables such as who owns the asset, their marginal tax rate, and whether small business CGT concessions reduce or disregard the gain.

2 supported 1 requires assumptions

Submitted text

I support negative gearing and CGT changes on residential property. But why are our other assets - the actually productive ones like businesses and shares - being penalised? ... It doesn't take a mathematician to work out that applying an indexation method to a $0 cost base gets you $0. Which means all gains on the eventual sale of a self-funded business get hit at the full 47%.

Per-claim verification

supported 91% confidence

Budget 2026's CGT redesign applies beyond residential property to other eligible capital gains, not only housing assets.

“Why are our other assets - the actually productive ones like businesses and shares - being penalised?”

The official Budget 2026 tax reform page describes the CGT change as a general replacement of the 50 per cent discount from 1 July 2027, while separately carving out a special choice for investors in new builds. That means the policy is not framed as a housing-only change.

Alternative defensible framings

  • The CGT redesign is broader than residential property, although other concessions can still matter in specific business cases.

Primary sources

Budget 2026-27 Tax reform page Capital gains tax · p.1 The Government will replace the 50 per cent CGT discount with a discount based on inflation and introduce a minimum 30 per cent tax on gains from 1 July 2027.
supported 97% confidence

Indexing a zero cost base still leaves a zero cost base.

“Applying an indexation method to a $0 cost base gets you $0.”

As a mathematical statement, applying an inflation factor to a starting cost base of zero still produces zero. That arithmetic point is consistent with the Budget's move from the discount to indexation for eligible gains.

Alternative defensible framings

  • If the starting cost base is genuinely zero, indexation does not create a positive cost base.

Primary sources

Budget 2026-27 Tax reform page Capital gains tax · p.1 The Government will replace the 50 per cent CGT discount with a discount based on inflation and introduce a minimum 30 per cent tax on gains from 1 July 2027.
requires assumptions 89% confidence

All gains on the eventual sale of a self-funded business will be taxed at 47 per cent under the Budget 2026 CGT reform.

“Which means all gains on the eventual sale of a self-funded business get hit at the full 47%.”

That outcome is possible only in narrower scenarios than the post states. It assumes an individual on the top marginal rate, a gain not reduced by small business CGT concessions, and no other offsetting design feature. The ATO's own guidance shows that eligible small business taxpayers may access concessions that reduce or disregard gains, including the 15-year exemption, the 50 per cent active asset reduction, and the retirement exemption.

Assumptions required

  • The asset is held by an individual taxed at the top marginal rate
  • No small business CGT concession reduces or disregards the gain
  • The gain falls fully under the post-1 July 2027 regime

Alternative defensible framings

  • Some self-funded business sale scenarios could face tax at the top marginal rate on most or all of the gain.
  • The tax outcome varies with ownership structure, marginal rate, and small business CGT concession eligibility.

Primary sources

Budget 2026-27 Tax reform page Capital gains tax · p.1 The Government will replace the 50 per cent CGT discount with a discount based on inflation and introduce a minimum 30 per cent tax on gains from 1 July 2027. ATO: Overview of the CGT concessions for small business Overview of the concessions · p.1 The small business 15-year exemption provides a total exemption ... The small business 50% active asset reduction provides a 50% reduction ... The small business retirement exemption provides an exemption for capital gains up to a lifetime limit of $500,000.