Tax adjusted trading profit and basis period

Hi,

Can someone confirmed to me when is the point when the basis period has to be applied in the tax comp. In my understanding so far, basis period applies to tax adjusted trading profit and not before i.e. PBT needs to be adjusted (addback expenses disallowed for tax less income exempted) and also deducted with capital allowances prior to applying the basis period.

I think the examiner wont be so mean to ask all these in one Q (cross fingers) as it would take tremendous effort to answer them but im just asking to clarify my understanding 🙂

Also, the basis period should only be applicable to individual income tax computation rite? accounting period for Corp tax computation would normally follow the period of accounts of the company, for example, in the case of a new company having the first set of account for, say, 6 months, no adjustment in terms of basis period should applied…