Capital Gains Tax Calculator
Estimate your CGT liability for asset disposals in the UK after the £3,000 allowance.
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Adjust the inputs on the left and press Calculate to see your personalized results here.
Capital Gains Tax Calculator UK – Estimate Your CGT Liability Instantly
The Capital Gains Tax (CGT) Calculator UK helps you estimate how much tax you may need to pay when you sell or dispose of an asset that has increased in value. Whether you're selling property, stocks, cryptocurrency, or other investments, this tool gives you a clear breakdown of your potential tax liability.
In the UK, Capital Gains Tax applies to the profit (gain) you make — not the total sale price. Understanding how much tax you owe can be complex due to allowances, tax bands, and different rates depending on the type of asset. This calculator simplifies the entire process in seconds.
What is Capital Gains Tax?
Capital Gains Tax is charged on the profit made when you sell or dispose of an asset that has increased in value. Common taxable assets include:
- Property (that is not your main residence)
- Stocks and shares
- Cryptocurrencies
- Business assets
- Valuable personal possessions
You only pay tax on the gain, which is calculated as: Selling Price – Purchase Price – Allowable Costs
What Does the UK CGT Calculator Include?
This calculator uses the latest UK tax rules to estimate your CGT, including:
- Annual tax-free allowance (Annual Exempt Amount)
- Different CGT rates (e.g., 10%, 20%, 18%, 28%)
- Income-based tax band impact
- Asset type (property vs other assets)
It provides a detailed estimate of your tax liability based on real UK thresholds.
Who Should Use This Tool?
The Capital Gains Tax Calculator UK is ideal for:
- Property investors
- Stock and crypto traders
- Business owners selling assets
- Individuals planning asset disposals
- Anyone needing quick CGT estimates
If you're asking “How much Capital Gains Tax will I pay in the UK?” — this tool gives you a fast and reliable answer.
Why Use a CGT Calculator?
Capital Gains Tax calculations can quickly become complicated, especially when factoring in allowances and tax bands. This tool helps you:
- ✅ Estimate your tax before selling an asset
- ✅ Plan disposals strategically
- ✅ Avoid unexpected tax bills
- ✅ Understand your net profit after tax
Example Scenario
If you buy an asset for £10,000 and sell it for £25,000, your gain is £15,000. After applying the annual tax-free allowance, only part of this gain is taxable. Depending on your income and asset type, different CGT rates will apply.
This calculator performs all these steps instantly.
Plan Your Investments Smarter
Knowing your Capital Gains Tax in advance allows you to make better financial decisions. Whether you're timing a sale or evaluating investment returns, this calculator provides clarity and confidence.