“ 80 Credit for, or repayment of, overstated or overpaid VAT (1) Where a person— (a) has accounted to the Commissioners for VAT for a prescribed accounting period (whenever ended), and (b) in doing so, has brought into account as output tax an amount that was not output tax due, the Commissioners shall be liable to credit the person with that amount. … (2) The Commissioners shall only be liable to credit or repay an amount under this section on a claim being made for the purpose. … (4) The Commissioners shall not be liable on a claim under this section— (a) to credit an amount to a person under subsection (1) or (1A) above, or (b) to repay an amount to a person under subsection (1B) above, if the claim is made more than 4 years [1] after the relevant date. (4ZA) The relevant date is— (a) in the case of a claim by virtue of subsection (1) above, the end of the prescribed accounting period mentioned in that subsection, unless paragraph (b) below applies; … (6) A claim under this section shall be made in such form and manner and shall be supported by such documentary evidence as the Commissioners prescribe by regulations; and regulations under this subsection may make different provision for different cases.”
“ Any claim under section 80 of the Act shall be made in writing to the Commissioners and shall, by reference to such documentary evidence as is in the possession of the claimant, state the amount of the claim and the method by which that amount was calculated.”
“ 121 Old VAT claims: extended time limits (1) The requirement in section 80(4) of VATA 1994 that a claim under that section be made within 3 years of the relevant date does not apply to a claim in respect of an amount brought into account, or paid, for a prescribed accounting period ending before4 December 1996 if the claim is made before1 April 2009 . … (3) In this section— “input tax” and “prescribed accounting period” have the same meaning as in VATA 1994 (see section 96 of that Act), ... (4) This section is treated as having come into force on19 March 2008 .”
“There is a distinction between the decision of the commissioners to make an assessment, the making of the assessment and the notification of the assessment.”
“It seems to me that the essence of entrusting a claim to the Post Office is that once the letter is in the hands of the Post Office it is, so far as the taxpayer is concerned, beyond recall and in that sense has been made.”