Chancellor John Healey is considering a capital gains tax hike in the October Budget, which could push higher rate bills to 40 per cent.
Under proposals submitted by a growing number of think-tanks, ministers, and financial organisations, capital gains tax rates would be increased to align directly with UK income tax bands. The Treasury is seeking to raise urgent revenue ahead of the annual Budget statement scheduled for October 28.
If implemented, the adjustment would increase the capital gains tax rate for basic rate taxpayers from 18 per cent to 20 per cent. For higher rate taxpayers, the levy would jump from 24 per cent to 40 per cent overnight.
The proposed change would represent the second major capital gains tax increase in two years. Rates were last increased under former Chancellor Rachel Reeves, whose tax changes took effect in April.
Capital gains tax is a charge levied by HM Treasury on the profit generated when an individual sells or disposes of an asset that has increased in value. The tax applies solely to the financial gain achieved rather than the total sale price of the asset.
Under UK tax law, individuals do not pay capital gains tax when selling their main personal residence. However, the levy applies to sales of secondary residential properties, including buy-to-let investments and holiday homes, as well as taxable investment portfolios, fine paintings, classic cars, and jewellery. Investments held inside an Individual Savings Account (ISA) remain fully exempt.
Record Capital Gains Revenues and Taxpayer Numbers
Official government figures show that capital gains tax receipts have already reached historic levels. A record 24.2 billion pounds was paid in capital gains tax during the 2024/25 tax year, marking an 89 per cent surge compared to the previous year.
The rapid rise in tax receipts follows substantial cuts to the annual tax-free capital gains allowance enacted by the previous Conservative government. Ministers reduced the annual allowance from 12,300 pounds down to 6,000 pounds, before cutting it further to 3,000 pounds in rapid succession.
The reduced allowances have drawn smaller retail investors into the tax net alongside wealthier individuals. The total number of people paying capital gains tax rose by 45 per cent in 2024/25, reaching 584,000 taxpayers.
However, recent data released yesterday indicates that tax receipts may be flattening. HM Revenue and Customs collected 915 million pounds in capital gains tax between April and August this year, representing an 8 million pound decline compared to the same five-month period last year.
Debate Over Taxing Investment versus Labor
Supporters of equalising capital gains tax with income tax argue that investment returns should not receive preferential treatment over employment wages. Campaigners contend that purchasing an asset and watching its value rise over time requires significantly less daily effort than working a job.
Conversely, financial industry experts argue that investors require financial rewards to compensate for taking risks with their personal capital. They warn that steep tax increases undermine entrepreneurial activity and broader economic growth.
Jason Hollands, an investment expert at wealth management firm Evelyn Partners, warned that treating investment capital like a regular salary ignores the inherent financial risks involved in asset ownership.
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"Investing involves putting your capital at risk," Hollands said. "There is no guarantee a business will succeed and investments can make a loss. That is very different to getting a salary."
Hollands pointed to official HM Revenue and Customs behavioral modeling, which indicates that raising capital gains tax by 10 per cent could ultimately reduce overall tax revenues. According to HMRC models, higher rates encourage investors to retain assets rather than sell them, thereby avoiding tax liabilities.
Impact of Inflation on Property and Asset Gains
Critics also highlight that capital gains tax frequently taxes paper profits created by broader economic inflation rather than genuine increases in real wealth.
For example, an investor who purchased a buy-to-let property or holiday home ten years ago for 100,000 pounds and sells it today for 140,000 pounds registers a taxable profit of 40,000 pounds on paper. However, because inflation has increased living costs over that decade, the property is worth no more in real purchasing power than when it was originally acquired, meaning no real profit was created despite the tax charge.
Strategies for Protecting Assets Before the Budget
Financial advisers advise against making hasty decisions based purely on pre-Budget speculation before Chancellor John Healey delivers his speech on October 28. However, individuals who have already decided to sell taxable assets may choose to accelerate their transactions.
When former Chancellor Rachel Reeves adjusted capital gains tax rates, the changes were implemented overnight without warning. Advisers note that Chancellor John Healey could enact similar immediate rate increases on Budget day, though tax rates are unlikely to be reduced.
Financial columnist Rachel Rickard Straus noted that she is currently selling a property and had been lackadaisical about completing the paperwork. She is now working to finalize the transaction before October 28 to avoid potential rate increases.
Investors holding assets in taxable accounts can protect future gains by utilizing a Bed and ISA transfer if they have unused annual ISA allowance remaining. Under a Bed and ISA transaction, an investor sells shares in a taxable portfolio and repurchases them within a stocks and shares ISA wrapper, shielding future returns from capital gains tax. Investment platforms handle this process directly.
Married couples and registered civil partners can also transfer assets between each other tax-free. Spouses can combine their individual 3,000 pound annual capital gains allowances or transfer holdings to a partner in a lower income tax bracket.
Investors are also advised to maximize contributions to tax-sheltered accounts such as Individual Savings Accounts and personal pensions. Another approach involves selling shares gradually across multiple tax years to utilize each year's annual allowance, although this strategy requires careful planning and professional advice.
Finally, asset owners may choose to retain investments indefinitely. Under current UK tax rules, capital gains tax liabilities expire upon the owner's death. When assets are passed on to beneficiaries, they become subject to inheritance tax rules rather than capital gains tax.
