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Capital Gains Tax calculator

Quickly know how much Capital Gains Tax you owe on your profits from property, shares, crypto and more.

Your situation

Outlined number oneOutlined number one
How did you make money?
Profit from capital gains
Annual salary
Other income

Tax and profit

Outlined number two
  • Your profit from
    Incl. £12,300 tax-free CGT allowance
  • Capital Gains Tax to pay
  • Profit after tax

How your capital gains tax is calculated

Your total capital gains tax (CGT) owed depends on two main components:

  1. How much you earn in total
  2. What type of assets you sell

Your overall earnings determine how much of your capital gains are taxed at 10% or 20%.
Our capital gains tax rates guide explains this in more detail.

In your case where capital gains from shares were £20,000 and your total annual earnings were £69,000:

Capital gains tax (CGT) breakdown

You pay no CGT on the first £12,300 that you make

You pay £127 at 10% tax rate for the next £1,270 of your capital gains

You pay £1,286 at 20% tax rate on the remaining £6,430 of your capital gains

What is Capital Gains Tax? 

Use our Capital Gains Tax calculator to work out what tax you owe on your investment profits. Capital Gains Tax is basically a tax that you’re charged on money you make from selling an asset. When we say asset, this can mean any of the following:

  • Property
  • Jewellery
  • Vintage cars
  • Cryptocurrency
  • Stocks and shares
  • And more!

As you can see from using the calculator, you pay different rates depending on what you’re selling. Check them out here 👇

Type of asset Basic rate Higher rate
Shares 10% 20%
Residential property 18% 28%
Cryptocurrency 10% 20%
Other 10% 20%

When do I owe CGT?

After selling an asset, you only owe Capital Gains Tax on profits above £12,300. Anything less than that is tax-free. When you earn more than £12,300 during a tax year, you will need to declare it to HMRC and file a tax return. Make sure you do this by 31st January the tax year after you profit.

In practice, here are the deadlines to be aware of:

  • You make £70,000 profit from selling a vintage car in June 2020
  • This is the 2020/21 tax year
  • Register for Self Assessment to declare the income by 5th October 2021
  • Pay tax on your profit by 31st January 2022

2020 Capital Gains Tax changes 

If you sell a residential property, you now need to declare your profits within 30 days and pay any tax you owe. This rule has been in place since 6th April 2020. If you don’t do this, you could face a fine from HMRC. Be aware that this includes both UK residents and those who own UK property but live abroad. Take a look at the following exceptions to these changes:

  • The legally binding contract for the sale was made before 6th April 2020
  • You’re eligible for full private residence relief
  • You sold the property to your spouse or civil partner
  • The profit you made was within your tax free allowance 
  • You sold the property for a loss
  • The property is outside the UK

Read more about the CGT changes.

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