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If you're selling a business, there are extra reliefs available which might mean you can pay less capital gains tax (CGT) when you sell or give away your company.
Business asset disposal relief could allow you to pay a lower CGT rate (charged at 18% from 6 April 2026, up from 14% previously), when selling a qualifying business.
While this is the same rate as the standard lower rate of CGT, it could save higher-rate taxpayers money compared with the standard higher rate of CGT (24%).

Members can use GoSimpleTax to file to HMRC at a great price and avoid costly accountant fees.
Get startedThe relief means you will be charged CGT at the basic rate (18% for 2026-27) on the first £1m of gains you make in your lifetime.
Given that the higher rate of CGT is 24%, and selling a business could push even basic-rate taxpayers into paying the higher rate, this is a valuable tax break.
The allowance applies at an individual level, so £1m is the maximum you can claim per person, rather than for each business you sell.
Any gains above the £1m threshold are taxed at the full CGT rate of 24%.
Eligibility for business asset disposal relief depends on the circumstances of the sale.
When selling all or part of your business, you can claim business asset disposal relief if:
If you're closing down your business, you must dispose of your business assets within three years to qualify for relief.
When selling shares or securities, you can claim business asset disposal relief if:
There are some additional rules depending on whether or not the shares are from an Enterprise Management Incentive (EMI). HMRC's website has more details.
When selling assets you lent to the business, you can claim business asset disposal relief if:
Find out more: use HMRC's helpsheets for more guidance
If you're only selling part of a business, then that part business must be capable enough of carrying on as a 'going concern' – accountants' speak for being commercially viable. So if you sold loss-making parts of the business, without the means to continue funding it, this wouldn't qualify.
The rules can be complex, so if you're not sure, it's worth taking advice from a qualified accountant. More details can also be found on HMRC's website.
If you or your business don't qualify for business asset disposal relief, you'll need to calculate and pay your capital gains bill in the same way as when selling any other asset. You can find out more in our guide to capital gains tax rates and allowances.
You start by working out the gains you make on the sale of your business.
This means you take the sales price, and deduct what you paid for it, as well as any investments in the business, and any costs relating to buying or selling it.
Once you have that, you deduct your personal allowance. For 2026-27 (the same as 2025-26), you can earn up to £3,000 in capital gains free of tax, and couples can pool their allowances.
You'll pay CGT on any gain above this threshold – this is charged at 18% for basic-rate taxpayers, and 24% for higher-rate taxpayers.
Bear in mind that your capital gain will count when working out your tax bracket for the year, so even if you're a basic-rate taxpayer, a large capital gain can push you into paying the higher rate.
Use our jargon-free calculator to complete and securely submit your tax return direct to HMRC.
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