“(2) In any case where, for any prescribed accounting period, there has been paid or credited to any person— (a) as being a repayment or refund of VAT, or (b) as being due to him as a VAT credit, an amount which ought not to have been so paid or credited, or which would not have been so paid or credited had the facts been known or been as they later turn out to be, the Commissioners may assess that amount as being VAT due from him for that period and notify it to him accordingly. … (6) An assessment under subsection (1), (2) or (3) above of an amount of VAT due for any prescribed accounting period must be made within the time limits provided for in section 77 and shall not be made after the later of the following— (a) 2 years after the end of the prescribed accounting period; or (b) one year after evidence of facts, sufficient in the opinion of the Commissioners to justify the making of the assessment, comes to their knowledge, but (subject to that section) where further such evidence comes to the Commissioners' knowledge after the making of an assessment under subsection (1), (2) or (3) above, another assessment may be made under that subsection, in addition to any earlier assessment. (6A) In the case of an assessment under subsection (2), the prescribed accounting period referred to in subsection (6)(a) and in section 77(1)(a) is the prescribed accounting period in which the repayment or refund of VAT, or the VAT credit, was paid or credited.”
“(1) Subject to the following provisions of this section, an assessment under section 73, 75 or 76, shall not be made— (a) more than 4 years after the end of the prescribed accounting period or importation or acquisition concerned… … (4) In any case falling within subsection (4A), an assessment of a person (“P”), or of an amount payable by P, may be made at any time not more than 20 years after the end of the prescribed accounting period or the importation, acquisition or event giving rise to the penalty, as appropriate… (4A) Those cases are— (a) a case involving a loss of VAT brought about deliberately by P (or by another person acting on P's behalf)… … (4B) In subsection (4A) the references to a loss of tax brought about deliberately by P or another person include a loss that arises as a result of a deliberate inaccuracy in a document given to Her Majesty's Revenue and Customs by that person.”
“1 (1) A penalty is payable by a person (P) where— (a) P gives HMRC a document of a kind listed in the Table below, and (b) Conditions 1 and 2 are satisfied. (2) Condition 1 is that the document contains an inaccuracy which amounts to, or leads to— … (c) a false or inflated claim to repayment of tax. (3) Condition 2 is that the inaccuracy was careless (within the meaning of paragraph 3) or deliberate on P's part. … [Table:] … VAT- VAT return under regulations made under paragraph 2 of Schedule 11 to VATA 1994 … 3 (1) For the purposes of a penalty under paragraph 1, inaccuracy in a document given by P to HMRC is— (a) “careless” if the inaccuracy is due to failure by P to take reasonable care, (b) “deliberate but not concealed” if the inaccuracy is deliberate on P's part but P does not make arrangements to conceal it, and (c) “deliberate and concealed” if the inaccuracy is deliberate on P's part and P makes arrangements to conceal it (for example, by submitting false evidence in support of an inaccurate figure).”