“(1) An officer of Revenue and Customs may by notice in writing require a person (“the taxpayer”)- ( a ) to provide information, or ( b ) to produce a document, if the information or document is reasonably required by the officer for the purpose of checking the taxpayer's tax position. (2) In this Schedule, “taxpayer notice” means a notice under this paragraph.”
“(1) In this Schedule, except as otherwise provided, “tax position”, in relation to a person, means the person's position as regards any tax, including the person's position as regards— ( a ) past, present and future liability to pay any tax, ( b ) penalties and other amounts that have been paid, or are or may be payable, by or to the person in connection with any tax, and ( c ) claims, elections, applications and notices that have been or may be made or given in connection with [the person's liability to pay] 1 any tax, and references to a person's position as regards a particular tax (however expressed) are to be interpreted accordingly.”
“(1) Where a person has made a tax return in respect of a chargeable period under section 8 , 8A or 12AA of TMA 1970 (returns for purpose of income tax and capital gains tax), a taxpayer notice may not be given for the purpose of checking that person's income tax position or capital gains tax position in relation to the chargeable period. (2) … (3) Sub-paragraphs (1) and (2) do not apply where, or to the extent that, any of conditions A to D is met. (4) Condition A is that a notice of enquiry has been given in respect of— ( a ) the return, or ( b ) a claim or election (or an amendment of a claim or election) made by the person in relation to the chargeable period in respect of the tax (or one of the taxes) to which the return relates (“relevant tax”), and the enquiry has not been completed. (5) In sub-paragraph (4), “notice of enquiry” means a notice under— ( a ) section 9A or 12AC of, or paragraph 5 of Schedule 1A to, TMA 1970, or ( b ) paragraph 24 of Schedule 18 to FA 1998. (6) Condition B is that an officer of Revenue and Customs has reason to suspect that[, as regards the person,] 1 ( a ) an amount that ought to have been assessed to relevant tax for the chargeable period may not have been assessed, ( b ) an assessment to relevant tax for the chargeable period may be or have become insufficient, or ( c ) relief from relevant tax given for the chargeable period may be or have become excessive….”
“(3) On an appeal the [that is notified to the tribunal, the tribunal] 1 may— ( a ) confirm the information notice or a requirement in the information notice, ( b ) vary the information notice or such a requirement, or ( c ) set aside the information notice or such a requirement. (4) Where the [tribunal] 1 confirms or varies the information notice or a requirement, the person to whom the information notice was given must comply with the notice or requirement— ( a ) within such period as is specified by the [tribunal] 1 , or ( b ) if the [tribunal] 1 does not specify a period, within such period as is reasonably specified in writing by an officer of Revenue and Customs following the [tribunal's] 1 decision.”