Free Calculator
CGT Change Calculator
See how the proposed 2026 Federal Budget CGT changes could affect your after-tax outcome, compared with the current 50% discount rules — for individuals, trusts, super funds and companies.
How this is calculated ▸
- Estimates only, not advice — general information only, not financial, tax or legal advice.
- Proposed legislation only — the 2026 Budget CGT changes have not passed Parliament. Final rules and start date may change.
- Current law — sale proceeds minus adjusted cost base, less capital losses, then the entity's CGT discount (50% individual/trust, 33⅓% super, none for companies) if held over 12 months, taxed at the entity's applicable rate.
- Budget 2026 rules (from 1 July 2027) — the gain is split by the proportion of the holding period before and after 1 July 2027 (time apportionment). The pre-transition portion keeps the current 50% discount. The post-transition portion is reduced by inflation (cost-base) indexation, then taxed at the higher of the entity's marginal rate or a proposed 30% minimum — unless the individual is a pensioner/income-support recipient, in which case the 30% minimum does not apply.
- Super funds and companies — expected to be unaffected by the proposed changes, so both regimes show the same result for these entities.
- What's not modelled — the market-valuation transition alternative, main residence exemption, small business concessions, carried-forward loss nuances, depreciation, foreign tax offsets, ESS-specific rules, negative gearing, land tax, and the Medicare levy surcharge. Verify with a registered tax agent.
Difference in what you keep
$0
No change under these assumptions
Current law — amount kept
$4,166
Estimated tax: $794 · 26.1% p.a.
Budget 2026 rules — amount kept
$4,166
Estimated tax: $794 · 26.1% p.a.
Holding period across the 1 July 2027 transition
Full breakdown ▸
Current law
Budget 2026 rules
This is an estimate for one parcel. Metrifly calculates CGT across every parcel automatically — with the discount, entity rules and cost-base adjustments applied.
From one sale to a full CGT report
A single share sale looks simple: sale proceeds minus cost base. In a real portfolio, the hard part is collecting every parcel, brokerage cost, AMIT adjustment, DRP parcel and capital loss in the right order — and now, potentially, splitting gains either side of 1 July 2027. Use the calculator above to estimate one disposal, then use a portfolio-level CGT report for shares when you need the figures you will actually reconcile for myTax or your accountant.
Entity
Who holds it changes everything
Individuals, trusts, SMSFs and companies all face different discount rates and tax rates — and the proposed reform affects them differently.
Timing
The 1 July 2027 transition
Assets held across the proposed start date are split by holding-period days — part taxed under current rules, part under the new ones.
Lots
The parcel you sell matters
FIFO, LIFO or minimise-CGT allocation can produce different outcomes when you bought the same holding in several parcels.
What to reconcile before lodging
Check the acquisition date, disposal date, proceeds, brokerage, sale costs, capital losses and any managed-fund AMIT adjustments against your contract notes and annual tax statements. This calculator models announced but unlegislated 2026 Budget proposals using stated assumptions — verify the result, and especially the entity treatment, with a registered tax agent before lodging or making a decision.
FAQ
Questions about the CGT changes
What are the proposed 2026 Budget CGT changes?
The Federal Budget has proposed replacing the 50% CGT discount with inflation (cost-base) indexation, plus a minimum effective CGT rate of 30% on many gains, from 1 July 2027. This is proposed legislation only and has not passed Parliament — final rules and the start date may change.
How is capital gains tax calculated under current law?
Your capital gain is the sale price minus the adjusted cost base, including brokerage, disposal costs and cost-base adjustments such as AMIT. Capital losses are applied before the discount. If you held the asset more than 12 months, individuals and trusts generally get a 50% CGT discount, SMSFs get 33⅓%, and companies get none.
What happens to assets I already hold across 1 July 2027?
This calculator uses the proposed time-apportionment method: your gain is split by the proportion of days you held the asset before versus after 1 July 2027. The pre-transition portion keeps the current 50% discount; the post-transition portion is taxed under the proposed indexation and 30% minimum-rate rules.
Does the reform affect superannuation funds and companies?
Based on the announced framework, super funds/SMSFs and companies are expected to be excluded from the CGT changes — this is an announced position on unlegislated proposals, not yet law. This calculator shows 'no change' for those entities and keeps their existing concessional rates (33⅓% discount and 15%/0% tax for super; no discount and 25%/30% tax for companies).
What if I'm a pensioner or income-support recipient?
Under the proposed rules, indexation still reduces your taxable gain, but the 30% minimum effective rate does not apply to you — toggle the pensioner/income-support option to see the difference.
What happens if I make a capital loss?
A capital loss isn't taxed under either regime. You can use it to offset capital gains in the same year and carry any unused loss forward to future years. Losses don't receive the CGT discount or indexation.
Is this calculator accurate for my situation?
It's an estimate for one disposal using the announced 2026 Budget framework and the entity type, income bracket and assumptions you select. It doesn't model the market-valuation transition alternative, main residence exemption, small business concessions, carried-forward loss nuances, depreciation, foreign tax offsets, ESS-specific rules, negative gearing, land tax, or the Medicare levy surcharge. Verify with a registered tax agent before making any decision.
Want CGT calculated automatically across every parcel, with the discount and entity rules applied? See Metrifly Tax Reporting →