The CGT 50% discount and the 12-month holding rule: timing capital gains for retirees across personal and super structures

For Australian retirees managing capital gains on investment assets — listed shares, ETFs, managed funds, investment property, business assets — the CGT discount under Division 115 of the Income Tax Assessment Act 1997 is the structural feature that determines how heavily capital gains are taxed. Section 115-25 of the ITAA 1997 (https://classic.austlii.edu.au/au/legis/cth/consol_act/itaa1997240/s115.25.html, accessed 12 May 2026) sets the 12-month holding requirement, and section 115-100 (https://classic.austlii.edu.au/au/legis/cth/consol_act/itaa1997240/s115.100.html, accessed 12 May 2026) sets the discount percentages — 50% for individuals (and most eligible trusts) and 33⅓% for complying superannuation entities. Companies receive no discount on capital gains. Combined with the zero CGT treatment for assets supporting retirement-phase pensions, the discount and 12-month rule create planning structure that retirees and their advisers should understand to manage CGT efficiently (ATO — CGT discount, https://www.ato.gov.au/individuals-and-families/investments-and-assets/capital-gains-tax/calculating-your-cgt/cgt-discount, accessed 12 May 2026). For most long-held retirement assets the 12-month threshold is comfortably met and the discount applies routinely; for in-specie transfers, recent acquisitions, and active rebalancing, the timing decisions can be material.

The 12-month holding rule under s.115-25 is the structural feature that determines whether the discount applies. The period runs from the acquisition date (typically when the asset was acquired by the taxpayer, or for inherited post-CGT assets, when the deceased originally acquired it under the s.115-30 inherited-holding-period rules at https://classic.austlii.edu.au/au/legis/cth/consol_act/itaa1997240/s115.30.html, accessed 12 May 2026) to the disposal date (typically the contract date for a sale, which is the CGT event A1 date under s.104-10). More than 12 months between the two dates is required — exactly 12 months doesn't qualify; one day more does. For most retirees with long-held investment assets, the rule is rarely a binding constraint; the assets have been held for years or decades. The rule matters in specific scenarios: in-specie contributions to super where the personal holding period determines the personal CGT outcome before the asset moves to super, recent acquisitions being considered for sale before the 12-month threshold, year-end timing decisions, and active trading.

The discount rates differ by entity type, creating different effective tax rates on capital gains across structures. Individuals receive a 50% discount under s.115-100 — half the gain assessable, taxed at marginal rates. For a $100,000 gain on long-held shares, $50,000 is included in assessable income. For a self-funded retiree in the FY25-26 30% marginal bracket ($45,001–$135,000 of taxable income), this produces approximately $15,000 in tax (plus Medicare levy where applicable) — an effective 15% rate on the underlying gain. Eligible trusts generally produce 50% discount flow-through to individual beneficiaries, with the same end-result effective rate. Complying super funds in accumulation phase receive a 33⅓% discount under s.115-100, with two-thirds of the gain assessable taxed at the fund's 15% rate, producing an effective 10% rate on the underlying gain. Complying super funds in retirement phase are tax-exempt on earnings supporting pension liabilities (within the $2.0 million general transfer balance cap from 1 July 2025) — capital gains on segregated pension-phase assets, or the exempt-current-pension-income portion under the proportionate method, are not taxed at all. Companies don't receive any discount — capital gains are taxed at the company rate (typically 25% for small business or 30% for larger companies).

The structural consequence for retirees is that super in retirement phase is the most tax-favoured structure for capital gains, accumulation super is intermediate, and personal holdings outside super produce variable rates depending on the marginal rate. For clients with substantial long-held investments in personal names, moving the assets into super (where eligible) before realising large gains can produce substantial tax savings. The path involves either selling personally (with personal CGT cost), contributing the proceeds as a non-concessional contribution, then investing inside super; or contributing in specie (a CGT event for the personal holder, but the proceeds are then in super for any future gains). The choice depends on the specific cost base, current market value, the available NCC cap, and the timing relative to TBC and pension commencement.

A specific scenario worth highlighting is the just-under-12-months trap for in-specie contributions to super. A client wants to contribute shares to their SMSF as an in-specie NCC, with the shares acquired nine months ago. The contribution is a CGT event for the personal holder — they're disposing of the shares to themselves as trustee. Holding period is nine months, so the s.115-25 12-month requirement isn't met, the 50% discount doesn't apply, and the full capital gain is included in assessable income at marginal rates. If the contribution can wait another four weeks for the 12-month-plus-one-day threshold to elapse, the discount applies, and the personal tax cost roughly halves. For substantial gains, the timing difference can save thousands of dollars. The advice work is to surface the 12-month threshold before in-specie events and time them to qualify for the discount where possible. The related article on articles/2026-05-04-ncc-bring-forward-when-not-to-trigger covers the NCC cap considerations that interact with the in-specie decision.

The phase-transition opportunity is another timing consideration. For clients approaching retirement with substantial unrealised gains in their accumulation-phase super, the timing of disposal relative to pension commencement matters. Selling in accumulation phase produces the 33⅓% discount with effective 10% tax. Selling after the asset has moved to retirement phase (within TBC limits) produces 0% tax. For a $200,000 gain, the deferral saves approximately $20,000. The deferral isn't always feasible — market conditions, portfolio rebalancing needs, asset-specific considerations may force earlier sale — but where the timing is flexible, deferring to retirement phase preserves the gain entirely from CGT. For high-balance clients pushing against the TBC, the analysis is more complex (TBC constrains how much can move to retirement phase); but for clients with cap headroom, the phase-transition timing is a real planning lever, often coordinated with the proportioning rule covered at articles/2026-05-04-pension-proportioning-rule-tax-free-lock-in.

Capital losses play a specific role in the framework — they're applied at full value (no discount) against gross capital gains before the discount is applied to the net amount. Section 102-5 of the ITAA 1997 (https://classic.austlii.edu.au/au/legis/cth/consol_act/itaa1997240/s102.5.html, accessed 12 May 2026) sets the calculation order: gross capital gains less capital losses (current year and prior-year carry-forward) gives the net capital gain, and the discount is applied to the result. So a year with $100,000 of long-held discounted gains and $50,000 of losses produces a net $50,000 capital gain, with the 50% discount applied to give $25,000 assessable. The full-value treatment of losses against gross gains makes loss harvesting (deliberately realising losses to offset gains in the same financial year) particularly valuable. For retirees with mixed-performance portfolios — some holdings in gain, some in loss — selecting which losses to realise alongside which gains is a meaningful tax-management tool. Losses not used in the current year carry forward indefinitely against future gains, but can't be applied retrospectively against prior years' gains. The discipline is to coordinate gain and loss realisation in the same financial year for direct offset.

For inherited assets, the holding period inheritance is favourable for beneficiaries under s.115-30 of the ITAA 1997. Post-CGT assets inherited from a deceased estate carry forward the deceased's acquisition date as the relevant start date for the 12-month rule, with cost base inherited from the deceased under s.128-15. So a beneficiary inheriting an asset that the deceased had held for five years can dispose of it the following day and still qualify for the 50% discount — the deceased's holding period counts. For pre-CGT assets (acquired by the deceased before 20 September 1985), the cost base resets to market value at the date of death under s.128-15, with the relevant holding period generally running from death. For executors and beneficiaries managing estate disposals, understanding which assets carry forward the deceased's holding period versus reset at death affects the timing decisions — see the related article on articles/2026-05-04-cgt-2-year-inherited-dwelling-rule for the parallel main-residence framework.

The practical advice work for retirees managing capital gains has a recurring shape. Identify all capital assets with their acquisition dates and cost bases. Apply the 12-month rule before each disposal — confirm the discount qualifies. Compare entity-level treatment when planning disposals — is the asset in personal name, accumulation super, or retirement-phase super, and what's the effective rate at each? Plan disposal timing considering the 12-month threshold, year-end timing for loss matching, and phase transitions. Coordinate gains and losses in the same financial year for direct offset. Track in-specie events carefully, as they're CGT events at the personal level when the asset moves into super. Document for tax compliance — acquisition dates, cost bases, disposal proceeds, capital gains and losses calculated correctly. For most retirees with long-held investment portfolios, the work is routine; for clients with substantial active rebalancing or large in-specie movements, the planning is more involved.

What do worked planning examples show?

These two cases show how the discount and 12-month rule play out for typical retiree CGT scenarios. Illustrative only — not personal advice — using FY25-26 figures and post-1-July-2024 stage-3 marginal tax rates.

Case 1 — Helen, 70, sells investment property held 18 years for $1.2 million proceeds, with cost base of $400,000. Capital gain $800,000. On these facts, the rational pathway is straightforward: 12-month rule under s.115-25 comfortably met, 50% discount under s.115-100 applies. $400,000 included in assessable income. Without other income, $400,000 added to a standard $20,000 of pension/age pension income pushes Helen into the top brackets — taxable income $420,000 means tax of approximately $138,000–$145,000 depending on the precise other-income mix and Medicare levy (with the gain mostly assessed at 37% from $135k–$190k and 45% above $190k). The trap to avoid is realising the gain in a year where Helen has other substantial income that pushes more of the gain into the top bracket — spreading the sale across two financial years (where contractually possible) or coordinating with low-income years can produce better tax outcomes. For property sales, the contract date is the CGT event under s.104-10, so timing the contract before or after 30 June can shift the year of assessment.

Case 2 — Robert, 64, holds $300,000 of long-held shares (acquired eight years ago, cost base $150,000) and is considering contributing them in specie to his SMSF as an NCC. On these facts, the personal CGT analysis: 12-month rule comfortably met (eight years), 50% discount applies. Capital gain $150,000, $75,000 assessable after discount. Assuming Robert's other taxable income for the year is moderate so the gain is mostly assessed at 30% (the $45,001–$135,000 marginal rate from 1 July 2024 under the stage-3 reforms), the tax cost on the gain is approximately $22,500 (plus 2% Medicare levy = $24,000 in total). After the in-specie contribution, the SMSF's cost base in the shares is $300,000 (current market value), and any future capital gains in the fund are taxed at the fund's effective rate (10% in accumulation, 0% in retirement phase). The trap to avoid is contributing the shares without provisioning for the personal CGT cost — the in-specie movement is itself a CGT event, and Robert needs to plan for the tax bill. An alternative path: sell the shares personally, take the after-tax proceeds, contribute the cash as NCC. Both paths produce similar economic outcomes; the in-specie path avoids brokerage costs but requires fund acceptance and proper market-valuation documentation.

For Australian retirees managing capital gains across personal and super structures, the CGT 50% discount under Division 115 and the 12-month holding rule under s.115-25 are the foundational features that determine effective tax rates on disposal events. Long-held assets routinely qualify for the discount, with effective rates varying by entity type — 50% discount for individuals, 33⅓% for accumulation super, fully exempt for retirement-phase super. The timing levers are real for in-specie transfers, recent acquisitions, phase transitions, and loss harvesting. For most clients the discount applies routinely; for clients planning substantial transactions the timing analysis is part of the standard advice work. The integration with super phase, NCC contribution timing, and broader portfolio strategy is where the practitioner adds value.

Sources

• classic.austlii.edu.au — S115.25
• classic.austlii.edu.au — S115.100
• classic.austlii.edu.au — S115.30
• classic.austlii.edu.au — S102.5
• Australian Taxation Office (ATO) — Cgt discount