CGT timing in retirement: parcel selection on shares vs whole-asset disposal on property

For most working life, capital gains tax (CGT) is a periodic feature of investment activity — realised when an asset is sold, calculated against the cost base, and taxed at the marginal rate (with the 50% CGT discount for assets held more than 12 months by individuals; see ATO — CGT discount, https://www.ato.gov.au/individuals-and-families/investments-and-assets/capital-gains-tax/cgt-discount, accessed 6 May 2026). The mechanics are familiar. In retirement the calculation changes character: marginal rates are typically lower (no employment income, possibly tax-free super pension at age 60 and over, SAPTO eligibility from Age Pension age, low-income offsets), so the choice of when and how to realise gains has more strategic weight than during the working years. The same gain realised at a 19% marginal rate produces far less tax than the same gain at 37%, and the difference compounds when multiple realisations are sequenced thoughtfully.

What enables the strategy is a structural distinction in CGT mechanics that retirees often overlook: shares offer parcel-by-parcel selection, while real property is whole-asset. When a retiree owns 5,000 shares of a particular company — accumulated over 20 years through dividend reinvestment or repeated purchases — those 5,000 shares are not tax-fungible. Each parcel has its own acquisition date and cost base. Some parcels were bought at $5; others at $25; the latest at $40. Today the share is at $50. When the retiree sells some of the holding, they can typically choose which parcels to sell by specific identification — for example, "I'm selling the 1,000 shares I bought on 5 May 2018" (ATO — identifying shares or units sold, https://www.ato.gov.au/individuals-and-families/investments-and-assets/capital-gains-tax/cgt-on-shares-and-similar-investments/identifying-shares-or-units-sold, accessed 6 May 2026). The choice determines the cost base of the sale and therefore the capital gain. For records to support specific identification, the retiree needs broker statements, share registry records, or platform reports showing the date and price of each parcel, and for most active investors with online broker accounts the records are readily available. The alternative is first-in-first-out (FIFO), which assumes the oldest parcels are sold first; for retirees with long-tenure holdings (oldest parcels at low cost base, large unrealised gains), FIFO tends to produce more tax than necessary, so specific identification, where supported, is generally preferred.

Property is structurally different. A property is typically a single asset for CGT purposes, and selling triggers the entire capital gain in the year of sale. There is no parcel selection — no way to realise just $20,000 of gain on a property with $400,000 unrealised gain (ATO — working out your capital gain, https://www.ato.gov.au/individuals-and-families/investments-and-assets/capital-gains-tax/working-out-your-capital-gain, accessed 6 May 2026). The whole-asset nature of property means a single sale event can push a retiree from a low marginal bracket into the highest. A retiree with $30,000 of other taxable income and an investment property realising $400,000 of gain (after the 50% discount, $200,000 added to taxable income) faces a tax bill substantially higher than if the same gain could be spread over multiple years.

The combination of lower retirement-year tax rates and CGT timing flexibility creates a meaningful planning opportunity for share-heavy portfolios. A retiree with $300,000 of unrealised gains across a share portfolio and a multi-year realisation horizon can sequence parcel sales across years where each year sits in a low marginal bracket. The aggregate tax over a decade can be a fraction of what a single-year realisation would produce. The strategy depends on having parcels of suitable individual sizes, on lifestyle stability so the cash from each year's sale aligns with retirement income needs, on predictability of other income sources, and on stability of tax law over the planning horizon. For retirees with concentrated share holdings (one large parcel rather than many small ones), the parcel flexibility is reduced — though even then, partial sales can spread the gain.

For investment property, the timing flexibility lies in when to sell, not how much. Several strategies apply. The simplest is to pick the lowest-marginal-rate year for sale: if the retiree has flexibility (the property is not under pressure to sell — no tenant transition, no urgent cash need), the year matters, and a year with otherwise low income (before a return to part-time work, after a major deductible event, in the early gap years before Age Pension) is preferable to a high-income year. Where the property is sold in a high-income year, deductions can be stacked in that year — current ATO guidance on deductibility of financial advice fees, accelerated charitable giving, work-related expenses, and other available deductions can reduce the assessable position. Where the property is owned by a higher-marginal-rate spouse and could be transferred to a lower-rate spouse before sale, the transfer itself triggers CGT and stamp duty in many cases, but the post-transfer sale may produce lower aggregate tax — the analysis is complex and requires legal and tax input. For larger properties where subdivision is feasible, splitting the sale across years through subdivision is structurally possible, though the subdivision itself has stamp duty, planning, and tax consequences and is not generally a tax-only decision. And where the property generates net rental income that supports retirement, continuing to hold may be more tax-efficient than realising — particularly true for properties where unrealised gain is large relative to rental yield, because the embedded gain doesn't have to be realised this year.

For retirees with mixed assets, the order in which assets are liquidated affects the lifetime tax position. As a general principle, assets with low unrealised gains or with losses to offset other gains come first, parcel-selectable shares with manageable individual gains come next, chunky single-asset disposals (investment property, large concentrated share parcels) come later, and assets with substantial gains that can be timed across multiple years are kept for last (or in some cases never realised, with gain effectively forgiven on death where the asset passes to a beneficiary at the deceased's cost base for further holding). The principle is to spread the realisation, prefer the flexible assets first, and keep the chunky tax events for years where they can be absorbed by low marginal rates or available deductions.

A specific planning angle worth highlighting is the super contribution interaction. Capital gains realised in low-income retirement years can be the source of non-concessional contributions (NCCs) to super. The retiree realises the gain in a low-marginal-rate year (low CGT cost), then contributes the proceeds as NCC within annual cap and TSB threshold rules ($120,000 NCC cap and $360,000 three-year bring-forward in FY25-26, subject to the $2.0 million general Transfer Balance Cap as the TSB tapering threshold; ATO — non-concessional contributions cap, https://www.ato.gov.au/individuals-and-families/super-for-individuals-and-families/super/growing-and-keeping-track-of-your-super/caps-limits-and-tax-on-super-contributions/non-concessional-contributions-cap, accessed 6 May 2026). Future earnings on the contributed funds are taxed at 15% in accumulation phase or 0% in pension phase, versus the marginal rate that would have applied if held outside super. For retirees in their 60s and early 70s with NCC capacity and substantial unrealised gains in non-super assets, the strategy can recharacterise outside-super wealth into the super system at low marginal-rate cost; repeated across multiple years, the cumulative effect can be substantial.

What do worked strategy examples show?

These two cases show the parcel-selection lever and the whole-asset-disposal lever in action. Illustrative only — not personal advice — using FY25-26 figures.

Case 1 — Susan, 67, single self-funded retiree. Susan has $35,000 of other taxable income (mostly franked dividends with the gross-up partly offset by SAPTO and franking credit refunds) and a $400,000 holding in a single ASX blue-chip company built up over 22 years through dividend reinvestment. The cost base across her parcels ranges from $4 (parcels acquired in 2003-2008) to $42 (parcels acquired in 2024); current price is about $50. Total unrealised gain is roughly $300,000. She wants to convert some of the holding into cash flow over the next eight years to fund travel and home renovations. On these facts, specific identification is generally rational because FIFO would force her to sell the lowest-cost-base parcels first and crystallise the largest gains. By choosing parcels selectively each year — for example, selling a $40 cost-base parcel realising $10 per share rather than a $4 cost-base parcel realising $46 — she can target around $30,000 of pre-discount gain ($15,000 added to assessable income after the 50% discount) per year, keeping her total taxable income around $50,000 and inside a low marginal bracket. Across eight years she realises roughly $240,000 of gain at low aggregate cost. The trap to avoid is letting her broker default to FIFO at sale time without explicit instruction — she should confirm her broker supports specific identification and keep parcel-level records (ATO — identifying shares or units sold).

Case 2 — Robert, 70, single self-funded retiree, planning to sell an investment property. Robert bought the property for $200,000 in 2002; it is now valued at $620,000 with an effective cost base of $220,000 after capital improvements. The unrealised gain is around $400,000, halving to $200,000 after the 50% CGT discount. He has $32,000 of other taxable income from a small share portfolio. The property is whole-asset — there is no parcel-selection lever. On these facts, the rational sequence is pre-sale planning across his available levers rather than reactive selling. Picking the right year matters: he should sell in a year with no other one-off income lift (no large super lump sum withdrawals, no business sale gains, no inheritance triggers in process). Stacking deductions in the sale year is the second lever — adviser fees deductible under current ATO guidance, accelerated charitable giving (using a workplace-style giving structure or a one-off donation), and any other deductions available in the same year reduce the assessable position. The third lever is a partial NCC contribution to super after sale: at 70 he can use the FY25-26 NCC cap of $120,000 (or $360,000 under bring-forward, subject to TSB rules) to move part of the post-tax proceeds into super, where future earnings sit at 15% accumulation or 0% pension rather than his marginal rate (ATO non-concessional contributions cap guidance). On these facts, Robert generally cannot avoid a chunky tax event in the year of sale — but he can select the year, stack deductions into it, and rapidly recharacterise net proceeds into super to lower the lifetime tax cost going forward. The trap is selling in a year already crowded with other one-off income or without coordinated NCC capacity.

A few common pitfalls remain worth flagging. Defaulting to FIFO when specific identification would help — active selection often saves tax on long-tenure portfolios. Single-year property sale without pre-sale planning across multiple potential sale years. Ignoring losses, since carried-forward and current-year capital losses can offset gains and many retirees don't realise their loss assets when they could be doing useful work. And inadequate records — decades-old share holdings sometimes lack cost-base data, and rectifying this before realisation is the planning task.

Capital gains tax in retirement is one of the most controllable tax events in the broader retirement plan. The structural flexibility of share parcels, combined with the typically lower marginal rates of retirement, allows for multi-year realisation programs that produce meaningful aggregate savings. Property is less flexible, but the year-of-sale lever and pre-sale planning still offer real choices. Either way, the planning is best done before the realisation, not after — once the gain is realised, the tax position is set.

Sources

• Australian Taxation Office (ATO) — Capital gains tax
• Australian Taxation Office (ATO) — Working out your capital gain
• Australian Taxation Office (ATO) — Cgt discount
• Australian Taxation Office (ATO) — Identifying shares or units sold
• Australian Taxation Office (ATO) — Non concessional contributions cap