--- title: "Australia's Government Wants to Reform CGT. Here's Why the Maths Doesn't Add Up." description: "CGT reform proposals face a Senate arithmetic problem. 59% of benefits go to the top 1%. But Labor tried this before and lost two elections. The political maths explained." author: Yan Zhu date: 2025-07-21 category: Finance & Tax url: https://premiumrea.com.au/blog/cgt-reform-history-australia-political-maths tags: ["CGT", "capital gains tax", "tax reform", "policy", "50% discount", "housing affordability", "politics"] --- # Australia's Government Wants to Reform CGT. Here's Why the Maths Doesn't Add Up. *By Yan Zhu, Co-Founder & Chief Data Officer at PremiumRea — 2025-07-21* > The CGT 50% discount costs the budget $247 billion over the next decade. 59% of that benefits the richest 1%. But every government that's tried to reform it has failed. Here's why. The Australian government is sharpening its knives around the capital gains tax discount. Again. If you own investment property — or plan to — this affects you directly. And the politics around it are more complicated than either side wants to admit. Let me walk you through the history, the numbers, and the Senate arithmetic that will determine whether reform actually happens. ## How the 50% discount was born In 1999, the Howard government introduced the CGT discount as part of the Ralph Review tax reforms. The rule is simple: any asset held for more than 12 months gets a 50% discount on the capital gain. So if you buy a property for $500,000 and sell it ten years later for $800,000, your capital gain is $300,000 — but you only pay tax on $150,000 [1]. Before 1999, the system was different. Capital gains were indexed to inflation — you'd adjust your cost base by CPI each year, then pay tax on the real (inflation-adjusted) gain. The indexation method was arguably more economically rational, but it was administratively complex. The 50% flat discount was simpler. It was also much more generous to investors, especially during periods of low inflation — which is exactly what Australia experienced for most of the 2000s and 2010s. Since the discount was introduced, housing affordability has deteriorated dramatically. The price-to-income ratio has gone from approximately 6x to over 11x nationally. Australia's peer comparator, Canada — which adopted a similar 50% inclusion rate — has experienced the same trajectory [2]. Correlation isn't causation. But the timing is hard to ignore. ## Who actually benefits (the numbers are uncomfortable) The Australia Institute and the Parliamentary Budget Office have both published distributional analyses of the CGT discount. The findings are stark. Combined CGT and negative gearing benefits: approximately 60% of the total dollar value goes to the top 10% of income earners. That's the number you'll see in most media coverage [3]. But if you isolate CGT alone, it's even more concentrated. Roughly 59% of CGT discount benefits flow to the top 1% of earners. Not the top 10%. The top 1%. Over the next decade, the foregone revenue from the CGT discount is estimated at $247 billion — more than the total CGT discount cost of the entire 27 years since the policy was introduced [4]. These numbers create a genuine equity problem. Younger Australians who don't own assets are subsidising the wealth accumulation of older Australians who do. The intergenerational wealth transfer is running in the wrong direction. But — and this is the part that reform advocates don't like hearing — the beneficiaries of the CGT discount include millions of ordinary Australians who will sell an investment property, a share portfolio, or a small business at some point in their lives. Calling it a "gift to the wealthy" oversimplifies a policy that touches 2.2 million rental property owners and millions more share investors. ## The Senate arithmetic problem Here's where reform gets stuck every time. The Australian Senate has 76 seats. Passing legislation requires 39 votes. The Coalition (Liberal/National) has made it absolutely clear they will oppose any CGT reform. That removes roughly 30-33 senators from the equation [5]. The Greens (10 seats) support CGT reform — in fact, they want it to go further than Labor would propose. Independent senators like Pocock and Lambie have signalled conditional support for moderate reform. That leaves Labor needing its own 26 senators plus enough crossbench support to hit 39. On paper, it's achievable. In practice, Labor has to navigate the same political minefield that destroyed them in 2016 and 2019. In 2016, Labor went to the election proposing to halve the CGT discount from 50% to 25%. They lost. In 2019, they went again with a similar policy. They lost again — unexpectedly, to a Coalition that ran hard on the "housing tax" scare campaign. Two elections. Two losses. The current Labor government has been conspicuously silent on CGT reform since taking office. They've learned the lesson: proposing CGT changes before an election is political suicide [6]. So will it happen? Maybe. But not before the next election. And not in a dramatic form. ## What reform would actually look like The three most commonly discussed proposals are: **Option 1: Reduce the discount from 50% to 25%.** This was Labor's 2016 policy. It roughly doubles the effective tax on property capital gains for top-bracket taxpayers. Impact: moderate. Revenue gain: approximately $4-5 billion per year. **Option 2: Return to inflation indexation.** Replace the flat discount with CPI-adjusted cost bases. More economically pure, but administratively complex. Impact: variable depending on inflation. Revenue gain: uncertain. **Option 3: Restrict the discount to new housing.** Keep the 50% discount for newly built dwellings but remove it for established property. This incentivises new construction while reducing the tax advantage of existing housing speculation. Impact: significant for investors in established property. Revenue gain: approximately $3-4 billion per year [7]. For property investors, Option 3 is the most likely and the most consequential. It would make established property less tax-advantaged relative to new builds, potentially shifting some investor demand toward construction activity (which is the stated policy goal). But here's the thing: at PremiumRea, our investment strategy doesn't depend on the CGT discount. We buy for positive cash flow and long-term capital growth on land. If the CGT discount is halved, our clients' properties still work because the rental income covers all costs regardless of the tax treatment of future gains [8]. The investors who get hurt by CGT reform are the ones who bought negatively geared properties banking on a large, lightly-taxed capital gain at sale. If that's your strategy, you have policy risk that you can't control. Our advice: structure your portfolio so that CGT changes don't matter. Buy for income. Hold for growth. And if the discount gets reduced, you'll pay slightly more tax on a gain that was still very profitable. That's a problem you want to have. ## References 1. [ATO, 'Capital Gains Tax — 50% Discount'. Eligibility and calculation for assets held >12 months.](https://www.ato.gov.au/individuals-and-families/investments-and-assets/capital-gains-tax/cgt-discount) 2. [Demographia International Housing Affordability survey, 2023. Price-to-income ratios for major Australian cities.](https://www.demographia.com/) 3. [The Australia Institute, 'Who Benefits from the Capital Gains Tax Discount?', 2023.](https://australiainstitute.org.au/) 4. [Parliamentary Budget Office, 'Tax Expenditure Analysis: CGT Discount', 2023. Projected 10-year revenue impact.](https://www.aph.gov.au/About_Parliament/Parliamentary_departments/Parliamentary_Budget_Office) 5. [Australian Parliament House, Senate composition, 47th Parliament.](https://www.aph.gov.au/Senators_and_Members/Senators) 6. [Australian Electoral Commission, 2016 and 2019 Federal Election results. Labor policy platforms and outcomes.](https://www.aec.gov.au/) 7. [Grattan Institute, 'Renovating Housing Policy' (2023). Analysis of CGT reform options and revenue estimates.](https://grattan.edu.au/) 8. [PremiumRea investment philosophy: positive cash flow strategy eliminates dependence on CGT discount for investment returns.](#) --- Source: https://premiumrea.com.au/blog/cgt-reform-history-australia-political-maths Publisher: PremiumRea (Optima Real Estate) — Melbourne buyers agent