UK Capital Gains Tax Calculator 2024
Calculate your potential capital gains tax liability based on your income, asset type, and gain amount.
Your Capital Gains Tax Results
Capital Gains Tax Rate Calculator UK: Complete 2024 Guide
Capital Gains Tax (CGT) in the UK applies when you sell or dispose of an asset that has increased in value. Understanding how CGT works can help you plan your finances more effectively and potentially reduce your tax liability. This comprehensive guide explains everything you need to know about capital gains tax rates in the UK for the 2024/25 tax year.
What is Capital Gains Tax?
Capital Gains Tax is a tax on the profit you make when you sell (or ‘dispose of’) an asset that has increased in value. It’s the gain you make that’s taxed, not the total amount of money you receive from the sale.
Key Points About CGT:
- You only pay CGT on gains above your tax-free allowance (£3,000 for 2024/25)
- The tax rates depend on your income tax band and the type of asset
- Some assets are exempt from CGT (like your main home in most cases)
- You must report and pay any CGT due through Self Assessment
Capital Gains Tax Rates 2024/25
The amount of CGT you pay depends on:
- Your income tax band (basic rate or higher rate)
- The type of asset you’re selling
- The size of your gain
| Asset Type | Basic Rate Taxpayers | Higher/Additional Rate Taxpayers |
|---|---|---|
| Residential Property (not your main home) | 18% | 24% |
| Other Chargeable Assets (shares, business assets, etc.) | 10% | 20% |
| Business Asset Disposal Relief (if eligible) | 10% | |
How Your Income Affects CGT Rates
Your income tax band determines which CGT rates apply to you. Here’s how it works:
- First, calculate your taxable income (your total income minus your Personal Allowance and any other reliefs)
- Then add your taxable gains to this amount
- The portion of gains that fall within the basic income tax band are taxed at the basic CGT rates
- Any gains above the basic rate band are taxed at the higher CGT rates
Capital Gains Tax Allowances and Reliefs
Annual Exempt Amount
For the 2024/25 tax year, the annual exempt amount is £3,000. This means:
- You don’t pay CGT if your total taxable gains are £3,000 or less
- If your gains are more than £3,000, you only pay CGT on the amount above £3,000
- Couples can combine their allowances (£6,000 total for 2024/25)
Business Asset Disposal Relief (Formerly Entrepreneurs’ Relief)
If you’re selling all or part of a business, you might qualify for Business Asset Disposal Relief, which reduces the CGT rate to 10% on qualifying gains (up to a lifetime limit of £1 million).
Other Reliefs and Exemptions
- Private Residence Relief: Usually no CGT when selling your main home
- Gift Hold-Over Relief: May allow you to defer CGT when giving away business assets
- Investors’ Relief: 10% CGT rate on qualifying shares (lifetime limit £10 million)
- Enterprise Investment Scheme (EIS) Reinvestment Relief: May defer CGT when reinvesting in EIS shares
How to Calculate Your Capital Gains Tax
Step-by-Step Calculation
- Determine your gain: Sale price minus original cost (plus any improvement costs and selling expenses)
- Subtract any losses: You can offset current year losses or brought-forward losses from previous years
- Apply your annual exempt amount: Subtract £3,000 (2024/25) from your gain
- Calculate taxable gain: The remaining amount is your taxable gain
- Determine your tax rate: Based on your income tax band and asset type
- Calculate the tax: Apply the appropriate rate(s) to your taxable gain
Example Calculation
Let’s say you’re a higher rate taxpayer selling shares with a gain of £20,000 in 2024/25:
- Gain: £20,000
- Subtract annual exempt amount: £20,000 – £3,000 = £17,000
- As a higher rate taxpayer, the CGT rate for shares is 20%
- Tax due: £17,000 × 20% = £3,400
When Do You Need to Pay Capital Gains Tax?
Payment Deadlines
For most assets, you need to:
- Report and pay any CGT due by 31 January following the end of the tax year (5 April) in which you made the gain
- For residential property sales, you must report and pay any CGT due within 60 days of completion
How to Report and Pay
You typically report CGT through:
- Self Assessment tax return (if you already complete one)
- The “real time” CGT service for UK property disposals
- A standalone CGT return if you don’t usually complete a tax return
Common Capital Gains Tax Mistakes to Avoid
- Forgetting to include all gains: You must report all chargeable gains in the tax year
- Incorrectly calculating costs: Remember to include purchase costs, improvement costs, and selling expenses
- Missing deadlines: Particularly important for property sales with the 60-day reporting rule
- Not using losses: You can carry forward losses from previous years to reduce your gain
- Ignoring reliefs: Many taxpayers miss out on valuable reliefs they’re entitled to
Capital Gains Tax Planning Strategies
Legal Ways to Reduce Your CGT Bill
- Use your annual exemption: Time disposals to use your £3,000 allowance each year
- Offset losses: Sell loss-making assets to offset gains
- Transfer assets to spouse: Use both partners’ allowances and lower tax bands
- Consider timing: Spread gains over multiple tax years to stay in lower tax bands
- Invest in tax-efficient schemes: Like EIS or SEIS which offer CGT reliefs
- Use Business Asset Disposal Relief: If selling business assets, this can reduce your rate to 10%
- Consider gifts: Transferring assets as gifts may defer or reduce CGT
Long-Term Planning
For significant assets, consider:
- Setting up a trust to manage assets
- Using company structures for business assets
- Gradual disposal of assets over several years
- Investing in assets that qualify for reliefs
Capital Gains Tax on Different Asset Types
Property (Not Your Main Home)
Selling a second home or buy-to-let property attracts CGT at:
- 18% for basic rate taxpayers
- 24% for higher/additional rate taxpayers
Special rules apply for:
- Properties that have been your main home at some point
- Inherited properties
- Properties owned before April 2015 (different rules for calculating gains)
Shares and Investments
Gains from selling shares are typically taxed at:
- 10% for basic rate taxpayers
- 20% for higher/additional rate taxpayers
Special considerations:
- Shares in your employer company may qualify for special reliefs
- Pooling rules apply for shares bought at different times
- Dividends are not subject to CGT (they have their own tax rules)
Cryptocurrency
HMRC treats cryptocurrency as a chargeable asset for CGT purposes. You may need to pay CGT when you:
- Sell crypto for fiat currency
- Exchange one crypto for another
- Use crypto to pay for goods or services
- Give away crypto (unless to a spouse or charity)
Crypto gains are taxed at the same rates as other assets (10% or 20% depending on your income tax band).
Business Assets
Selling business assets may qualify for:
- Business Asset Disposal Relief (10% rate on up to £1 million lifetime gains)
- Gift Hold-Over Relief (if giving away business assets)
- Roll-over Relief (if reinvesting in new business assets)
Capital Gains Tax for Non-UK Residents
Non-UK residents may still be liable for CGT on:
- UK residential property (since April 2015)
- UK commercial property (since April 2019)
- Other UK assets if you return to the UK within 5 years
Non-residents have the same annual exempt amount (£3,000 for 2024/25) but may have different reporting requirements.
Recent Changes to Capital Gains Tax
The UK government has made several recent changes to CGT rules:
| Change | Effective Date | Impact |
|---|---|---|
| Reduction in annual exempt amount | April 2023 | From £12,300 to £6,000 (then to £3,000 in April 2024) |
| Increase in higher rate for property | April 2023 | From 28% to 24% for higher rate taxpayers |
| Extension of payment window for property | October 2021 | From 30 days to 60 days to report and pay |
| New rules for non-residents | April 2019 | Extended to commercial property and indirect disposals |
Frequently Asked Questions About CGT
Do I pay Capital Gains Tax when I inherit property?
When you inherit property, you don’t pay CGT immediately. Instead, you may pay Inheritance Tax. When you later sell the inherited property, you’ll pay CGT on the increase in value from the date of inheritance to the date of sale.
What happens if I give away an asset instead of selling it?
Giving away an asset is usually treated as a disposal at market value for CGT purposes. However, there are exceptions:
- Gifts to your spouse or civil partner are usually CGT-free
- Gifts to charity are usually CGT-free
- Business assets may qualify for Gift Hold-Over Relief
Can I offset losses against gains from previous years?
Yes, you can carry forward losses from previous tax years to offset against current year gains. You must claim these losses within 4 years of the end of the tax year in which you made the loss.
How does CGT work if I’m self-employed?
If you’re self-employed, CGT applies to business assets you sell (like equipment or property) in the same way as for employed individuals. However, you may qualify for special reliefs like Business Asset Disposal Relief when selling business assets.
What records do I need to keep for CGT?
You should keep records for at least 5 years after the 31 January submission deadline of the relevant tax year. Records should include:
- Dates and values when you acquired and disposed of assets
- Any costs associated with buying, improving, or selling the asset
- Details of any reliefs or exemptions claimed
- Calculations of gains or losses
Important Disclaimer: This calculator and guide provide general information only. Capital Gains Tax rules can be complex and depend on your individual circumstances. For specific advice tailored to your situation, please consult a qualified tax advisor or accountant. The information provided is based on our understanding of UK tax law as of April 2024 and may be subject to change.
Official Resources and Further Reading
For the most accurate and up-to-date information, consult these official sources: