What is Capital Gains Tax?

Capital Gains Tax (CGT) is a tax you pay on the profit when you sell or dispose of an asset that has increased in value. It is based on the difference between the purchase price and the selling price of the asset. In the UK, it’s the gain that’s taxed, not the total amount you receive, and everyone has a tax-free annual exempt amount (£3,000 for the 2026/27 tax year) before CGT applies. Correct reporting is important because errors can lead to HMRC penalties or extra tax. Early review of a potentially incorrect disclosure helps limit further exposure and reduces the risk of HMRC raising additional queries

Correcting or Amending Capital Gains Tax Disclosures

Capital Gains Tax reporting may require correction where costs, reliefs, or disclosures were incomplete or incorrectly reported.

Once submitted, corrections require formal amendment. Early review helps limit further exposure and supports better CGT planning in the UK before filing.

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How Is Capital Gains Tax Calculated and Reported?

We calculate the gain using disposal value, allowable costs and eligible reliefs before reporting to HMRC. Relief eligibility, capital loss offsets, and your income level all affect the final liability. Once reported to HMRC, the position cannot be revised without a formal amendment, which is why accuracy before submission is essential. Our calculation and reporting process includes:

Reliefs That May Reduce Capital Gains Tax

Relief eligibility directly affects the final Capital Gains Tax liability. Missing or misapplying relief can increase the tax due and may require correction later. Relief eligibility must be established before reporting to HMRC.

Reliefs commonly reviewed include:
 ✓ Principal Private Residence Relief based on residence and letting history
 ✓ Business Asset Disposal Relief on qualifying business or share disposals
 ✓ Capital losses available to offset current or future gains
 ✓ Transfers between spouses or civil partners where permitted
 ✓ Relief interaction across multiple disposals in the same tax year

Relief eligibility must be established before reporting to HMRC.

What Our Personal Tax Clients Say

Common Situations We Handle

We support clients across a wide range of Capital Gains Tax cases, providing clear capital gains tax advice to ensure correct reporting, accurate calculations, and full HMRC compliance. Each case is reviewed carefully to reduce risk and improve tax efficiency.

UK Property Disposals

Share and Portfolio Sales

Crypto asset Disposals

Business and Company Exits

Areas We Serve

We work with clients across the UK through secure online consultations. In-person meetings are available by appointment at our London office. 

Frequently Asked Questions About Capital Gain Tax

CGT applies when disposal results in a taxable gain that must be reported to HMRC. With proper capital gains tax advice, you can understand exactly when your liability starts. This includes selling property, shares, crypto, or other chargeable assets. For UK residential property where tax is due, you must report and pay within 60 days of completion. Other gains are reported through the annual Self-Assessment tax return.

Usually not, if the property qualifies for Principal Private Residence Relief throughout your ownership. However, in some cases you may still need capital gains tax advice UK support if there are letting periods, long absences, or partial business use, as these can reduce relief and create a CGT liability. We review your position before filing to ensure accurate reporting.

From the 2026/27 tax year onwards, CGT is charged at 18% for basic rate taxpayers and 24% for higher rate taxpayers. Understanding the rules around the capital gains tax allowance 2026 is important, as it affects how much of your gain is taxable. The rate depends on your total income and type of asset being sold.

CGT planning UK means structuring your asset disposals in a way that legally reduces your tax liability. Good CGT planning UK services include timing decisions, relief usage, and loss management. It helps you reduce unnecessary tax and improve long-term financial outcomes while staying fully compliant with HMRC rules.

Legal ways to reduce CGT include using your annual allowance, claiming losses, transferring assets to a spouse, applying reliefs like BADR, and planning timing carefully. Our capital gains tax accountant can help you apply these strategies correctly, so you reduce tax while staying fully HMRC compliant.

The CGT allowance for the 2026/27 tax year is £3,000. This capital gains tax allowance 2026 UK helps reduce taxable gains legally. Gains below this threshold are not taxed, but reporting may still be required depending on your total disposal and tax situation.

Yes. HMRC treats crypto as a chargeable asset. Every disposal such as selling, swapping, or converting crypto is taxable under capital gains tax advice UK rules. Proper records and reporting are essential to calculate gains correctly and avoid HMRC penalties.

The 60-day rule requires UK residential property gains to be reported and paid within 60 days of completion if tax is due. This is an important part of capital gains tax on property UK compliance, and missing deadlines can result in penalties and interest from HMRC.

Missing a CGT deadline leads to penalties, interest, and possible HMRC enquiries. Getting help early from a capital gains tax advisor UK can reduce risk and help correct errors before they become more serious.

Yes, in some cases. Even if gains are below the allowance, HMRC reporting rules may still apply depending on your situation. A capital gains tax accountant can confirm whether reporting is required based on your total disposals and tax status.

Get Expert Capital Gains Tax Advice Now

Capital Gains Tax reporting determines the final liability. We review the disposal, confirm the calculation, and prepare reporting before submission.

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