Capital Gains Tax Allowance 2025/26: Rates, Changes and Planning

🎯 Understanding the 2025/26 CGT Landscape

The landscape of Capital Gains Tax has shifted dramatically over the last few fiscal cycles. Historically, the Annual Exempt Amount (AEA) was high enough to cover many modest investment gains, but recent government policy has focused on lowering this threshold to increase tax revenue. This means that even small-scale investors who previously ignored CGT must now be diligent with their reporting and calculations.

The Death of the Large Allowance

Only a few years ago, the CGT allowance stood at £12,300. In a swift series of reductions, this was halved to £6,000, and for the 2025/26 tax year, it sits at just £3,000. This "fiscal drag" effect brings thousands of additional taxpayers into the HMRC net, making it essential to understand how gains are calculated and reported via Self Assessment or the 60-day reporting service for property.

Who is Affected?

• Individual Investors: Those selling shares or units in a fund outside of an ISA or SIPP wrapper.
• Second Home Owners: Anyone disposing of a residential property that is not their "Principal Private Residence."
• Business Owners: Directors selling shares in their company or disposing of business assets.
• Trustees: The allowance for most trusts is typically half that of an individual, capped at £1,500 for 2025/26.

Understanding these shifts is the first step toward effective management. If you are just starting your journey, you might want to read our guide on tax efficiency for directors to see how CGT fits into a broader financial strategy.

📊 Capital Gains Tax Rates Explained

Calculating how much you owe isn't as simple as applying a single percentage. The rate you pay depends heavily on two factors: the type of asset you sold and your total taxable income for the year. CGT is effectively "stacked" on top of your income, which can push your gains into a higher tax bracket.

Basic Rate vs. Higher Rate Taxpayers

If you are a basic rate taxpayer (earning below £50,270 in total income and gains), you will generally pay 10% on your gains for most assets. However, if your combined income and gains exceed the basic rate threshold, you will pay 20% on the portion that falls into the higher rate band. This makes timing your disposals critical if you expect your income to fluctuate between years.

Residential Property Surcharge

Residential property attracts higher rates of CGT compared to other assets like shares or business equipment. For the 2025/26 tax year, the rates for residential property disposals are:

• 18% for gains within the basic rate band.
• 24% for gains within the higher or additional rate bands.
• Reporting: Remember that property gains must be reported and paid within 60 days of completion.

Business Asset Disposal Relief (BADR)

For entrepreneurs and company founders, Business Asset Disposal Relief (formerly known as Entrepreneurs' Relief) remains a vital tool. This relief allows qualifying individuals to pay a reduced rate of 10% on gains up to a lifetime limit of £1 million. This is a significant incentive for those looking to exit a business they have built over several years.

🔍 Identifying Taxable Assets

Not everything you sell is subject to Capital Gains Tax. Knowing what counts—and what doesn't—can save you from unnecessary paperwork and overpayment. Generally, CGT applies to the "gain" (the profit) you make when you sell or "dispose of" an asset that has increased in value.

Common Taxable Assets

• Personal Possessions: Items worth £6,000 or more (excluding your car), such as jewelry, antiques, or artworks.
• Shares and Investments: Any shares not held in an ISA or PEP, and gains from most unit trusts.
• Business Assets: Land, buildings, plant, and machinery used in your business, as well as shares in a family company.
• Cryptoassets: HMRC views Bitcoin and other cryptocurrencies as taxable assets rather than currency, meaning every trade or sale is a potential CGT event.

Exempt Assets

Several assets remain exempt from CGT, which forms the basis of many tax-planning strategies. These include your main home (due to Private Residence Relief), ISAs or SIPPs, UK Government Gilts, and Premium Bond winnings. Understanding how to shift wealth from taxable assets to exempt ones is a hallmark of professional financial planning.

💡 Effective Tax Planning Strategies

With the allowance now at a historic low of £3,000, proactive planning is no longer optional—it is a necessity. By utilizing the following strategies, you can reduce the impact of the lower thresholds on your portfolio.

Utilization of Losses

One of the most powerful tools in your arsenal is the ability to offset losses. If you sell an asset for less than you paid for it, you can use that loss to reduce your total taxable gain for the year. You can even carry forward unused losses from previous years to offset future gains, provided you report them to HMRC within four years.

The Power of Spousal Transfers

Assets can be transferred between spouses or civil partners on a "no gain, no loss" basis. This effectively allows a couple to combine their allowances, giving them a total tax-free threshold of £6,000 for the 2025/26 year. Furthermore, if one partner is in a lower income tax bracket, transferring the asset to them before sale can reduce the rate of tax paid from 20% to 10%.

Bed and ISA

• Crystallising Gains: Selling assets to use your £3,000 allowance before the end of the tax year.
• Re-investing: Moving the proceeds immediately into an ISA wrapper to ensure future gains are tax-free.
• Timing: Ensuring you do not fall foul of "bed and breakfasting" rules by waiting 30 days before buying the same shares back outside of an ISA.

For more insights on managing your company's fiscal health, check our article on dividend tax rates, which often goes hand-in-hand with CGT planning for business owners.

⚠️ Common Pitfalls and Compliance

HMRC has become increasingly efficient at identifying undeclared capital gains through data sharing with investment platforms and the Land Registry. Failing to comply can result in significant penalties and interest charges.

The 60-Day Property Rule

Many taxpayers are still caught out by the 60-day rule for UK residential property. If you sell a buy-to-let property or a second home, you must report the gain and pay the tax due within 60 days of completion. This is separate from your annual Self Assessment return. Waiting until the end of the tax year to report this will result in immediate fines.

Accurate Record Keeping

• Keep Receipts: You can deduct costs such as solicitor fees, stamp duty, and "allowable expenditure" for improvements (not repairs).
• Valuation Matters: If you inherited an asset, its "cost" is the value at the date of the previous owner's death.
• Joint Ownership: Ensure the split of ownership is correctly documented before a sale takes place to justify the use of multiple allowances.

📋 Your 2025/26 Action Steps

To ensure you stay on the right side of HMRC while keeping as much of your profit as possible, follow these actionable steps:

• Review your portfolio: Identify assets with "unrealized gains" and calculate if they exceed the £3,000 threshold.
• Assess your income: Determine if you will be a basic or higher rate taxpayer this year to predict your CGT rate.
• Consult a professional: If you are disposing of business shares, ensure you qualify for Business Asset Disposal Relief.
• Plan your disposals: If you are near the threshold, consider selling half an asset in March and the other half in April to utilize two years of allowances.

Setting up your business structure correctly from the start is often the best way to manage future liabilities. If you are considering moving from a sole trader to a limited company, read our guide on sole trader vs limited company to understand the tax implications.

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