“ 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. (1A) Where the Commissioners— (a) have assessed a person to VAT for a prescribed accounting period (whenever ended), and (b) in doing so, have brought into account as output tax an amount that was not output tax due, they shall be liable to credit the person with that amount. (1B) Where a person has for a prescribed accounting period (whenever ended) paid to the Commissioners an amount by way of VAT that was not VAT due to them, otherwise than as a result of— (a) an amount that was not output tax due being brought into account as output tax, or (b) an amount of input tax allowable under section 26 not being brought into account, the Commissioners shall be liable to repay to that person the amount so paid. (2) The Commissioners shall only be liable to credit or repay an amount under this section on a claim being made for the purpose. (2A)Where— (a) as a result of a claim under this section by virtue of subsection (1) or (1A) above an amount falls to be credited to a person, and (b) after setting any sums against it under or by virtue of this Act, some or all of that amount remains to his credit, the Commissioners shall be liable to pay (or repay) to him so much of that amount as so remains. ] (3) It shall be a defence, in relation to a claim under this section by virtue of subsection (1) or (1A) above, that the crediting of an amount would unjustly enrich the claimant. (3A) …………….. (4) ………………… (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.”
“Correction of errors 34. — (1) This regulation applies where a taxable person has made a return, or returns, to the Controller which overstated or understated his liability to VAT or his entitlement to a payment under section 25(3) of the Act. (2) In this regulation— (a)“under-declarations of liability” means the aggregate of— (i) the amount (if any) by which credit for input tax was overstated in any return, and (ii) the amount (if any) by which output tax was understated in any return; (b) “over-declarations of liability” means the aggregate of— (i) the amount (if any) by which credit for input tax was understated in any return, and (ii) the amount (if any) by which output tax was overstated in any return. (3) Where, in relation to all such overstatements or understatements discovered by the taxable person during a prescribed accounting period, the difference between— (a) under-declarations of liability, and (b) over-declarations of liability, does not exceed£2,000 , the taxable person may correct his VAT account in accordance with this regulation. (4) In the VAT payable portion— (a) where the amount of any overstatements of output tax is greater than the amount of any understatements of output tax a negative entry shall be made for the amount of the excess; or (b) where the amount of any understatements of output tax is greater than the amount of any overstatements of output tax a positive entry shall be made for the amount of the excess. (5) In the VAT allowable portion— (a) where the amount of any overstatements of credit for input tax is greater than the amount of any understatements of credit for input tax a negative entry shall be made for the amount of the excess; or (b) where the amount of any understatements of credit for input tax is greater than the amount of any overstatements of credit for input tax a positive entry shall be made for the amount of the excess. (6) Every entry required by this regulation shall— (a) be made in that part of the VAT account which relates to the prescribed accounting period in which the overstatements or understatements in any earlier returns were discovered, (b) make reference to the returns to which it applies, and (c) make reference to any documentation relating to the overstatements or understatements. (7) Where the conditions referred to in paragraph (3) above do not apply, the VAT account may not be corrected by virtue of this regulation”