CTM08410 | Corporation Tax: management expenses: administrative costs
From HM Revenue & Customs · Company Taxation Manual
Any reasonable expenses which a ‘company with investment business’ incurs year by year on such matters as:
the keeping of its share register,
the printing of annual accounts, and
the holding of shareholders’ annual general meetings,
should be regarded as expenses of management. This will also apply to the annual cost, but not the initial charges, of a Stock Exchange quotation.
There is further guidance on administration costs at BIM42500 onwards.