IFM06120 | Tax elected funds (TEFs): introduction & conditions of membership for the TEF regime: overview of conditions of membership
From HM Revenue & Customs · Investment Funds Manual
Entry into the TEF regime is subject to HMRC approval. The manager of the fund, or proposed manager for a newly formed fund, must make an application in writing to HMRC that it wants the TEF rules to apply from a given date. The fund must be an open-ended investment company (OEIC) or an authorised unit trust (AUT) (see IFM02110) and meet the following conditions:
An application for the TEF regime will apply from the beginning of an accounting period for an existing and newly formed fund - see IFM06230. “Accounting period” is defined in section 9 of the Corporation Tax Act 2009.