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The Ultimate Guide to Capital Gains Tax in the UK

Updated: Nov 27, 2023


What Is Capital Gain Tax?

Capital Gains Tax (CGT) in the UK is a tax on the profit made when you sell an asset that has increased in value. It applies to assets like property, shares, and personal possessions over a certain value. The tax rate varies based on the asset type and your income level.

Capital gains tax is a tax on the gain when you sell something (an "asset") that has increased in its value. You have to pay tax on the profit you make, not the amount you receive. For example, You bought an antique painting for £1,000 and then sold it for £20,000. This means you gain £19,000 (£19,000 minus £1,000). It applies to an asset that held for more than one year.

This generally applies to:

● Investment funds

● Shares

● Second properties

● The sale of a business

● Inherited properties

● Valuables such as art, jewelry, and antiques

The rate of capital gain tax is totally different than income tax. This is because, buying such assets qualifies as risk-taking, either as entrepreneurship or as an investment, so the additional burden of risk carries a greater potential reward.

capital Gains Tax on property UK

What are the Capital Gains Tax Rates in the UK For 2023/24?

Capital Gains Tax rates in the UK for the tax year 2023 to 2024 are as follows:

For Higher or Additional Rate Taxpayers:

  • 28% on gains from residential property

  • 20% on gains from other chargeable assets

For Basic Rate Taxpayers:

  • The rate depends on the size of the gain, taxable income, and whether the gain is from residential property or other assets.

  • If the total of taxable income and taxable gains (after deducting the tax-free allowance) is within the basic Income Tax band, the tax rate is 10% on gains (or 18% on residential property).

  • Any amount above the basic tax rate is taxed at 20% (or 28% on residential property).

For Trustees or Personal Representatives of Someone Who's Died:

  • 28% on residential property

  • 20% on other chargeable assets

For Sole Traders or Partnerships:

  • 10% if the gains qualify for Business Asset Disposal Relief.

The tax-free allowance for the 2023 to 2024 tax year is £6,000. If the taxable gains are not from residential property and the combined amount of taxable income and taxable gains is less than £37,700 (the basic rate band for the 2023 to 2024 tax year), the Capital Gains Tax is 10%.

For example, if your taxable income is £20,000 and your taxable gains are £12,600, you first deduct the Capital Gains tax-free allowance from your taxable gain, which leaves £6,600 to pay tax on. Adding this to your taxable income gives a combined amount of £26,600. Since this is less than £37,700, you pay Capital Gains Tax at 10%, which means you’ll pay £660 in Capital Gains Tax.

Please note that these rates are subject to change and it's always best to check the most current rates on the official government website.

Capital Gains Tax Rates Tabel

Asset Type

Basic Rate Taxpayer

Higher or Additional Rate Taxpayer

Property (Residential)



Property (Other than Residential)



Shares & Securities



Business Assets



Personal Possessions (>£6,000 excluding cars)



Annual Exempt Amount (Individuals)

​£12,300 (approx.)

​£12,300 (approx.)

How to Calculate Capital Gains Tax?

If you have a large number of taxable assets, this may take some time, if you calculate it manually, however, the government has published a capital gains tax calculator on the GOV.UK website. This page also lists some of the deductions, reliefs, and special circumstances that may be available. The world of tax contributions is incredibly complex; if done incorrectly it can lead to headaches, interest, and fines. To avoid these headaches you can hire a professional tax accountant that can help you to submit all your taxes.

A Real-Life Example of How to Calculate Capital Gains Tax in the UK for 2023-2024

Capital Gains Tax (CGT) calculations can be intricate, often requiring an understanding of various rules and exceptions. In this article, we’ll walk through a detailed, real-life example to elucidate how to calculate CGT in the UK for the 2023-2024 tax year.

Scenario Overview

Let’s consider Jane Doe, a higher-rate taxpayer, who sold a property in July 2023. This property was not her primary residence and thus is subject to CGT. We will go step by step through the process of calculating her CGT liability.

1. Determining the Gain

Jane purchased the property in 2010 for £300,000. She sold it in 2023 for £500,000. To calculate the gain, we first need to establish the total costs involved.

  • Purchase Price (2010): £300,000

  • Renovation Costs (2015): £25,000

  • Selling Costs (Estate agent fees, legal fees, etc., 2023): £10,000

  • Sale Price (2023): £500,000

The gain is calculated as follows:

Gain = Sale Price - (Purchase Price + Renovation Costs + Selling Costs) = £500,000 - (£300,000 + £25,000 + £10,000) = £500,000 - £335,000 = £165,000

2. Accounting for the Annual Exempt Amount

For the 2023-2024 tax year, the Annual Exempt Amount is approximately £12,300. This is the amount of gain that is tax-free.

Taxable Gain = Total Gain - Annual Exempt Amount = £165,000 - £12,300 = £152,700

3. Applying the Correct Tax Rate

As a higher-rate taxpayer, Jane is subject to a CGT rate of 28% on property gains.

CGT = Taxable Gain × Tax Rate = £152,700 × 28% = £42,756

4. Reporting and Payment

Jane must report this gain and pay the CGT due via her Self Assessment tax return or through the HMRC real-time CGT service.

5. Additional Considerations

  • Private Residence Relief: If the property had been Jane's primary residence at any point, she might have been eligible for Private Residence Relief for those periods.

  • Lettings Relief: If part of the property had been let out as residential accommodation, Jane could have claimed Lettings Relief, potentially reducing the CGT.

  • Previous Years' Losses: If Jane had made any losses on asset disposals in previous tax years, she could offset these against her current year's gains.

  • Joint Ownership: If the property were jointly owned, the calculations would need to account for each owner's share and respective tax rates.

6. Importance of Accurate Calculations

Accurate calculations are essential to ensure compliance with tax regulations and to avoid either underpaying or overpaying tax. Mistakes in CGT calculations can lead to penalties and interest on unpaid taxes.

7. Seeking Professional Advice

Given the complexity of CGT calculations, especially in scenarios involving significant sums or multiple assets, seeking advice from a tax professional is highly recommended.

8. Record-Keeping

It's crucial to keep comprehensive records of all transactions related to the asset, including purchase and sale agreements, receipts for improvements and repairs, and records of expenses incurred during the sale.

9. Planning and Strategy

Effective tax planning could involve spreading out asset disposals over multiple years to utilize annual allowances or timing disposals to coincide with years when income is lower, potentially qualifying for a lower CGT rate.

10. Staying Informed

Tax laws and rates are subject to change, and staying informed about current regulations is vital for accurate tax reporting and planning.


In Jane’s scenario, the CGT due on her property sale for the 2023-2024 tax year is £42,756. This example illustrates the importance of understanding the detailed steps involved in calculating CGT, considering all relevant costs, exemptions, and reliefs, and the impact of one’s income tax band. By carefully navigating these factors, taxpayers can ensure they meet their legal obligations while managing their tax liabilities effectively. Remember, each case can be unique, and consulting with a tax professional is always a prudent approach.

What is Capital Gain Tax Allowance?

There is an annual capital gain tax allowance of £12,300. This is the amount of profit you can make before capital gain tax is applied. If your gains are under this amount (£12,300) in the financial tax year then there is no CGT(capital gain tax) liability. However, you can't carry forward to the following year if you don't make use of the allowance when selling your assets.

capital Gains Tax on Jewelry UK

How to Work Out If You’re Due to Pay CGT?

● Take the final value of the asset you have sold.

● Subtract what you originally paid for it. If you owned it before March 31, 1982, use its market value as of that date

● Subtract any costs you incurred for the sale of the asset. This can include stamp duty and advertising costs

When is Capital Gains Tax Levied?

You must pay CGT when:

● Personal items valued at £6,000 or more ( does not include your car)

● Property that isn't your primary residence

● Your primary residence if you are renting, commercial or very large

● The company's assets (equipment and machines, shares, registered trademarks, etc.)

How to File & Pay Capital Gains Tax?

ICapital Gains Tax (CGT) in the UK applies to the profit made when you sell an asset that has increased in value. Understanding how to file and pay this tax is crucial for compliance and financial planning. This comprehensive guide will cover the key steps and considerations for filing and paying CGT in the UK.

Understanding Capital Gains Tax

CGT is levied on the sale of various assets, including property, shares, and personal possessions. The tax is calculated on the 'gain' – the difference between the purchase price and the selling price.

1. Determine if You Need to Pay CGT

Firstly, determine whether your gains exceed the annual tax-free allowance (known as the Annual Exempt Amount). For the 2023/2024 tax year, this is typically around £12,300. If your total gains are less than this amount, you do not need to pay CGT.

2. Calculating Your Gain

Calculate the gain by subtracting the purchase price and associated costs (like legal fees, improvement costs) from the selling price. Deduct any allowable losses from other asset sales in the same year.

3. Reporting CGT

  • Property Sales: If you’ve sold a property, you must report and pay CGT within 60 days of the sale.

  • Other Assets: For other assets, you report gains in your Self Assessment tax return.

4. Self Assessment Tax Return

  • Register for Self Assessment: If you’re not already registered, you need to do so by 5 October following the tax year you had the gains.

  • Complete the Capital Gains Summary: Fill in the ‘Capital Gains Summary’ section of your tax return, detailing your gains and any reliefs you’re claiming.

5. Paying CGT

  • Payment Deadlines: The deadline for paying CGT is 31 January following the tax year in which you made the gain.

  • Payment Methods: You can pay via bank transfer, debit card, or through your Self Assessment account. Ensure you reference your payment correctly with your Unique Taxpayer Reference (UTR) number.

6. Keeping Records

Maintain detailed records of your asset acquisitions and disposals. This includes purchase and sale contracts, receipts for expenses, and records of any improvements made.

7. Understanding Reliefs and Exemptions

  • Private Residence Relief: If the property was your main home, you might be eligible for Private Residence Relief.

  • Lettings Relief: Applies if you let out part of your home.

  • Business Asset Disposal Relief: Previously known as Entrepreneurs’ Relief, this can reduce the rate of CGT on the sale of business assets.

8. Late Reporting and Payment Penalties

Failing to report and pay CGT on time can result in penalties and interest charges. It’s crucial to adhere to the deadlines to avoid these charges.

9. Planning and Advice

Consider consulting a tax advisor for complex scenarios or large asset disposals. They can provide tailored advice and help with tax planning strategies.

10. Staying Informed

Tax laws and allowances can change, so it's important to stay updated. Regularly check for updates from HM Revenue and Customs (HMRC) or seek advice from a professional.


Filing and paying Capital Gains Tax in the UK requires a clear understanding of your tax obligations, careful calculation of your gains, and adherence to deadlines and procedures. By keeping detailed records, understanding available reliefs, and possibly consulting with a tax professional, you can navigate CGT requirements effectively and ensure compliance with UK tax laws. Remember, each financial situation is unique, and personalized advice can be invaluable in managing your tax liabilities and obligations.

capital Gains Tax on investment

How to Reduce/Avoid Capital Gains Tax UK?

So what can you do to reduce your CGT? Here are some tips/suggestions.

Use Your Allowance

The £12,300 is the allowance that you can use but you cannot carry it into the next financial years. Keep in mind, that everyone has their own allowance, so a married couple can make a profit of £ 24,600 in that tax year without paying any taxes.

Plan Your Sales Carefully

If you are using all or part of your CGT allowance for a particular year, consider delaying the sale of your property to the next tax year.

Gift Your Stock

You can gift up to $15,000 in stock to a family member who is in a lower-income tax bracket (such as a retired parent or child). So if he or she sells the shares, he or she doesn't have to pay anything. You can also donate valuable stock to charities to avoid CGT and receive income tax deductions on the stock's fair market value.

Contribution to the Pension

The most effective way to reduce capital gains taxes for higher taxpayers is to put it into a pension fund. So if you pay into a retirement fund by distributing your fixed income tax, you get a tax benefit from the state.

Offset Any Losses Against Gains

Profits and losses realized in the same tax year must be offset against each other, which can reduce the taxable profit. If your losses exceed your profits, you can carry them forward to offset against gains in the future, provided you have registered these losses with HMRC

Register the Property as a Primary Residence

If you own multiple properties and want to sell one, you may be able to reduce or avoid your CGT by declaring it as your primary residence. The rules for this are pretty strict, so talk to your advisor about the best way to do this.

Manage Your Taxable Income

Since the CGT rate you pay depends on the income tax, so reducing the income tax rate can reduce the amount of your CGT.

Don’t Pay Twice

Another thing to bear in mind is that capital gains are wiped out on death, so your estate will pay inheritance tax rather than CGT. Incurring CGT by selling assets later in life can effectively mean you pay tax on the same asset twice. If in doubt, contact your financial adviser.

capital Gains Tax on the sale of business

What are the Capital Gains Tax Exemptions in the UK?

Capital Gains Tax (CGT) in the UK is levied on the profit made when selling an asset that has increased in value. However, not all gains are subject to this tax. There are several exemptions and reliefs that can reduce or eliminate the CGT liability. Understanding these exemptions is crucial for effective financial planning and compliance with tax regulations.

1. Annual Exempt Amount

Each individual in the UK has a tax-free allowance, known as the Annual Exempt Amount, for capital gains. For the 2023/2024 tax year, this amount is typically around £12,300. Gains below this threshold are exempt from CGT.

2. Private Residence Relief

One of the most significant exemptions is the Private Residence Relief. If you sell a property that has been your main home throughout the period of ownership, you are usually exempt from CGT on the gain.

3. Lettings Relief

If you let out a property that has been your main residence at some point, you may be eligible for Lettings Relief, which can further reduce your CGT liability. However, recent changes have limited the applicability of this relief.

4. Chattels Exemption

Chattels, or personal possessions worth up to £6,000, are exempt from CGT. This includes items like jewelry, antiques, and artworks. If the item is sold for more than £6,000, special rules apply to calculate the taxable gain.

5. Gifting to Spouse or Civil Partner

Assets gifted to your spouse or civil partner are exempt from CGT, as long as they are not immediately sold. This allows couples to effectively plan and utilize each other’s allowances.

6. Gifts to Charity

Gains on assets gifted to a registered charity are exempt from CGT. This encourages philanthropic activities and supports charitable causes.

7. Business Asset Disposal Relief (Formerly Entrepreneurs' Relief)

This relief applies to the sale of a business or shares in a personal company. It reduces the CGT rate to 10% on qualifying assets, with a lifetime limit of £1 million in gains.

8. Investors' Relief

Investors’ Relief applies to the sale of shares in unlisted trading companies held for at least three years. Like Business Asset Disposal Relief, it offers a 10% CGT rate with a higher lifetime limit.

9. Enterprise Investment Scheme (EIS) and Seed Enterprise Investment Scheme (SEIS) Reinvestment Relief

Investing in EIS or SEIS qualifying companies can offer CGT relief. If you reinvest a capital gain into these schemes, the CGT can be deferred or reduced.

10. Rollover Relief

If you sell an asset and reinvest the proceeds in another qualifying asset, you may be able to defer paying CGT until the disposal of the new asset.

11. Exemption for Certain Government Securities

Certain government and corporate bonds are exempt from CGT, especially those designed for retirement savings.

12. Losses Set Against Gains

If you make a loss on the sale of an asset, you can use this loss to reduce your gains on other assets, lowering your overall CGT liability.

13. Non-Resident CGT Exemptions

Non-UK residents are subject to different rules, especially concerning the sale of UK property. However, they may be exempt from CGT on other UK assets.

14. Compensation and Damages

Compensation received for personal injury or damages is usually exempt from CGT.

15. Betting, Lottery, and Pool Winnings

Winnings from betting, lotteries, and pools are exempt from CGT, as they are not considered capital gains.

Understanding the various exemptions and reliefs available for Capital Gains Tax in the UK is essential for effective tax planning. These exemptions can significantly reduce or eliminate CGT liability, providing substantial financial benefits. As tax laws and regulations can change, it's important to stay informed and consider seeking professional advice, especially in complex situations or significant asset disposals. Accurate knowledge and strategic planning can help maximize these exemptions, aligning with your financial goals and ensuring compliance with UK tax laws.

How Can a Tax Accountant Help You with Capital Gains Tax in the UK?

Capital Gains Tax (CGT) in the UK can be a complex area of taxation, particularly for individuals with substantial assets or those involved in frequent trading or selling of properties and securities. A tax accountant plays a crucial role in navigating the intricacies of CGT, ensuring compliance with tax laws, and optimizing tax liability. Let's explore how a tax accountant can assist you with CGT in the UK.

1. Understanding Your Liability

A tax accountant begins by understanding your unique financial situation to determine your CGT liability. They will review your assets, the gains you have made, and identify which assets are liable for CGT. They will ensure you only pay tax on eligible gains, safeguarding you from overpaying.

2. Calculating Gains and Losses

Tax accountants are skilled in accurately calculating the gains and losses from the sale of assets. They take into account the purchase and selling prices, associated costs, and any reliefs or exemptions applicable. This accurate calculation is vital to determine the exact CGT you owe.

3. Utilizing Allowances and Exemptions

A key role of a tax accountant is to ensure you utilize all available allowances and exemptions. This includes the annual exempt amount, Private Residence Relief, Lettings Relief, and others. They can also advise on carrying forward losses from previous years to offset against current gains.

4. Strategic Tax Planning

Tax accountants offer strategic advice on timing the sale of assets to minimize CGT liability. They can guide you on spreading out disposals over several tax years to make the best use of annual exemptions and lower tax bands.

5. Advice on Reliefs and Deductions

There are various reliefs like Business Asset Disposal Relief, Investors’ Relief, and others that can significantly reduce CGT liability. A tax accountant can provide advice on qualifying for these reliefs and ensure that all eligible deductions are claimed.

6. Assistance with Filing and Compliance

Tax accountants assist in preparing and filing the necessary documents for CGT with HM Revenue and Customs (HMRC). They ensure that all filings are accurate and submitted within deadlines, thus avoiding penalties and interest charges for late submissions.

7. Representation Before HMRC

If there are any disputes or inquiries from HMRC regarding your CGT filings, a tax accountant can act as your representative. They can handle communications and negotiations with HMRC, providing you with expert representation.

8. Keeping Up with Legislation

Tax laws and rates frequently change. A professional tax accountant stays updated with the latest tax legislation and guidelines, ensuring that your CGT calculations and strategies are always compliant with current laws.

9. International CGT Matters

For individuals with international assets or for non-UK residents, CGT becomes more complicated. Tax accountants can provide specialized advice on international CGT matters, ensuring compliance with both UK and international tax laws.

10. Estate Planning and CGT

In estate planning, CGT plays a crucial role. Tax accountants can advise on the implications of CGT on estate planning and inheritance, helping in making informed decisions about asset distribution.

11. Record-Keeping and Documentation

Good record-keeping is essential for CGT purposes. Tax accountants can help in setting up and maintaining proper records and documentation for all transactions, which is crucial for accurate CGT calculations and for defending your filings if challenged by HMRC.

12. Advising on Tax-efficient Investments

Tax accountants can recommend tax-efficient investment strategies, like investing in Enterprise Investment Schemes (EIS) or Seed Enterprise Investment Schemes (SEIS), which can offer significant tax reliefs, including CGT deferral or reduction.

The role of a tax accountant in managing Capital Gains Tax is multifaceted. From ensuring accurate calculations and compliance to strategic planning for tax efficiency, a tax accountant can provide invaluable assistance. Their expertise not only helps in minimizing your tax liability but also in avoiding legal pitfalls and in making informed decisions about your assets. In the complex and ever-changing landscape of taxation, the guidance of a seasoned tax accountant is indispensable for effectively navigating Capital Gains Tax obligations in the UK.



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