The current exempt sum for capital gains tax is £11,700 then the applicable gain over this attracts capital gains tax.
Typically this is then taxed at 18% for residential property and 28%. Other chargeable gains will be liable for 10% and 20% tax. Examples of other chargeable gains are
First rates above are for lower rate taxpayers the second is for higher rates taxpayers. Businesses pay the higher rate of 20% on other chargeable gains and 28% for residential property. Sole traders still can have 10% rate for sole trader or partnership gains applicable for entrepreneur relief