In short

A capital gain is taxable income for the ATO but does not separately count as income for the Age Pension income test, which instead deems financial assets to earn a set rate regardless of what they actually earn or whether you sell. The gain can still trigger capital gains tax, and it can affect Commonwealth Seniors Health Card eligibility, since CSHC uses adjusted taxable income.

It's one of the most common worries among retirees managing their own investments: "If I sell my shares and make a big profit, won't that capital gain count as income and cut my Age Pension?" It's a sensible-sounding fear — and for the Age Pension income test, it's largely misplaced. Acting on it, by refusing to rebalance a portfolio or trim a risky holding, can lead to worse decisions than the imagined pension hit ever would. The confusion comes from a single fact that's worth getting straight: the word "income" means different things to the ATO (the Australian Taxation Office) and to Centrelink (Services Australia). A capital gain is income for one of them and not directly for the other. Once you see that, the fear mostly evaporates — and you can focus on the consequences that genuinely do apply. This article is general information only, not personal advice.

Are there two different definitions of "income"?

The tax system and the Age Pension system don't define income the same way, and that single difference is the whole story here. For tax, a capital gain is assessable income in the year you sell. For the Age Pension income test, the rules work completely differently — Centrelink doesn't look at what your financial assets actually earn at all. Instead it "deems" them: it assumes your shares, managed funds, bank accounts, and similar financial investments earn income at set rates, regardless of what they really earn or whether you buy or sell anything (Services Australia, https://www.servicesaustralia.gov.au/deeming; DSS Social Security Guide 4.4.1.10, https://guides.dss.gov.au/social-security-guide/4/4/1/10). Those rates are 1.25% on financial assets up to the deeming threshold ($66,800 for a single person, $110,600 for a couple, effective 1 July 2026) and 3.25% above it, applied to the total value of your financial investments — note the deeming rates (1.25%/3.25%) last changed 20 March 2026, but the deeming thresholds themselves index separately, each 1 July (DSS Social Security Guide 4.4.1.10, https://guides.dss.gov.au/social-security-guide/4/4/1/10).

Does realising a gain separately count as income?

The consequence is the key point: realising a capital gain on your shares does not separately count as income for the Age Pension income test. The deemed income is based on the value of your financial assets, not on your transactions or your profits. Whether your money sits in a share that's risen in value or in the cash you receive from selling it, it's a financial asset being deemed either way, so selling by itself barely moves the income-test needle (Services Australia, https://www.servicesaustralia.gov.au/deeming). The Department's own guidance puts it plainly — actual returns, including capital growth, dividends and interest, are not used for the income assessment, even when they exceed the deemed rate (DSS Social Security Guide 4.4.1.10, https://guides.dss.gov.au/social-security-guide/4/4/1/10). So the retiree who won't sell a big, risky single-stock holding because they fear the gain will gut their pension is, for Age Pension purposes, worrying about the wrong thing. There may be a real cost — capital gains tax — but that's a different question, covered below.

Does the assets test still apply?

While the gain isn't income, the value of what you hold is assessed under the assets test. Usually, selling shares and holding the proceeds as cash doesn't change much, because both are financial assets counted at their value. But if a sale changes your asset mix, the assessment can shift. The clearest example is selling an investment property: while you own it, it's assessed at its market value under the assets test and any rent counts as actual income, but when you sell, the capital gain isn't "income" for the Age Pension, the property drops off the assets test, and the proceeds become a financial asset that's then deemed. The net effect on your pension depends on the numbers, so a property sale is worth modelling properly (our companion piece on holiday homes and second properties covers the real-estate side in detail). And whatever you sell, the proceeds are an assessable asset from the date of sale, unless a specific exemption applies — such as home-sale proceeds you intend to use to buy a new home.

What happens on the tax side?

Step over to the ATO and the picture flips. For tax, a capital gain is assessable income, added to your taxable income in the year of the sale — reduced by the 50% capital gains tax discount if you held the asset for more than 12 months (ATO, https://www.ato.gov.au/individuals-and-families/investments-and-assets/capital-gains-tax/cgt-discount). That can mean tax to pay, and because it lifts your taxable income it can flow through to the Medicare levy and other measures that use that figure. So "will it cost me anything to realise this gain?" has a real answer — it might cost you CGT. It just won't cost you Age Pension via the income test.

What is the one exception that does bite?

There's an important catch for one group. The Commonwealth Seniors Health Card — the card many self-funded retirees of Age Pension age hold — uses an income test based on adjusted taxable income plus deemed income from account-based pensions (Services Australia, https://www.servicesaustralia.gov.au/income-test-for-commonwealth-seniors-health-card). Adjusted taxable income is built on your taxable income, and because a net capital gain is part of your taxable income, a large realised gain lifts your adjusted taxable income for that year (Services Australia, https://www.servicesaustralia.gov.au/what-adjusted-taxable-income). So while a capital gain doesn't touch the Age Pension income test, it can affect Commonwealth Seniors Health Card eligibility in the year you make the gain: a big one-off disposal could push you over the card's income limit ($101,105 for a single, $161,768 combined for a couple, 20 September 2025) for that year, which makes the timing of large disposals something to plan, ideally with advice.

What do the worked examples show?

These show where the fear is misplaced and where a gain genuinely matters. They are illustrative only — not personal advice, and your circumstances determine the outcome.

Norma, 73, is a single part-Age-Pensioner who owns a parcel of shares now worth $180,000 that has doubled since she bought it. She's been holding a risky single stock she'd rather diversify, but won't sell because she's convinced the capital gain will slash her pension. On these facts, the Age Pension fear is unfounded: her shares are already a deemed financial asset, so Centrelink assumes a set rate of income on their $180,000 value whether she holds or sells, and the realised gain doesn't separately count under the income test (Services Australia, https://www.servicesaustralia.gov.au/deeming). On these facts it is generally rational for Norma to make her diversification decision on investment merits and on the capital gains tax cost — the gain is taxable income for the ATO, reduced by the 50% discount as she's held the shares well over 12 months (ATO, https://www.ato.gov.au/individuals-and-families/investments-and-assets/capital-gains-tax/cgt-discount) — rather than on a phantom pension cut that won't happen.

David, 68, is a self-funded retiree who doesn't receive the Age Pension but holds a Commonwealth Seniors Health Card, with adjusted taxable income that normally sits comfortably under the single limit of $101,105 (20 September 2025). He's planning to sell an investment property at a large gain. On these facts the card, not the pension, is where the gain bites: the net capital gain flows into his taxable income and therefore his adjusted taxable income for that financial year, and a big enough gain could lift him over the card's income limit and cost him the card for that assessment (Services Australia, https://www.servicesaustralia.gov.au/income-test-for-commonwealth-seniors-health-card; https://www.servicesaustralia.gov.au/what-adjusted-taxable-income). On these facts it is generally rational for David to plan the timing of the sale with advice — understanding that the card is tested on a particular year's income — rather than to assume a capital gain has no consequences at all. (Our companion piece on the Commonwealth Seniors Health Card goes into its income test more deeply.)

Sources

Key takeaways

  • The Age Pension income test doesn't look at what your financial assets actually earn — it deems them to earn a set rate, so realising a capital gain doesn't separately count as income.
  • Deeming rates are 1.25% up to the deeming threshold ($66,800 single, $110,600 couple from 1 July 2026) and 3.25% above it, applied to your total financial assets regardless of transactions.
  • The assets test still applies to whatever you hold — selling shares for cash usually doesn't change your assessable assets much, but selling a property removes it from the assets test while the proceeds become a deemed financial asset.
  • A capital gain is genuinely taxable income for the ATO, reduced by the 50% CGT discount if held over 12 months — so it can still cost you tax, just not Age Pension via the income test.
  • The Commonwealth Seniors Health Card is the one place a capital gain does bite directly, since its income test is based on adjusted taxable income, which includes net capital gains.

Frequently asked questions

Does selling shares for a profit reduce my Age Pension?

Not directly through the income test. Centrelink deems your financial assets to earn income at a set rate regardless of their actual returns or whether you buy or sell — the realised gain itself isn't separately counted as income.

Does a capital gain affect the Age Pension assets test?

Usually not much if you're selling one financial asset (like shares) and holding the proceeds as cash, since both are counted as financial assets under the assets test. It matters more when you sell something like an investment property, which removes a differently-assessed asset and replaces it with a deemed financial asset.

Do I still pay tax on a capital gain even though it doesn't affect my Age Pension?

Yes. A capital gain is fully assessable income for tax purposes in the year of sale, reduced by the 50% CGT discount if you held the asset more than 12 months. It's a real tax cost — it just isn't an Age Pension income-test cost.

Can a capital gain affect the Commonwealth Seniors Health Card?

Yes, and this is the main place a gain genuinely bites. CSHC eligibility is based on adjusted taxable income, which includes net capital gains, so a large one-off gain in a given year could push a self-funded retiree over the card's income limit for that year.

A note on advice. This article is general information only and doesn't account for your personal circumstances. Everyone's situation is different — before acting, it's worth talking it through with a licensed adviser who knows your full picture.