IFM09325 | Taxation of investors: Chargeable Gains: calculation
From HM Revenue & Customs · Investment Funds Manual
When investors in RIFs dispose of some or all of their units, any chargeable gain is calculated under the normal rules, subject to the rules applying to units in tax transparent funds, as modified for RIFs. The treatment is broadly comparable to the treatment of disposals of units in a CoACS.