“Where a person has failed to make any returns required under this Act (or under any provision repealed by this Act) or to keep any documents and afford the facilities necessary to verify such returns or where it appears to the Commissioners that such returns are incomplete or incorrect, they may assess the amount of VAT due from him to the best of their judgment and notify it to him.”
“63. In our view, a deliberate inaccuracy occurs when a taxpayer knowingly provides HMRC with a document that contains an error with the intention that HMRC should rely upon it as an accurate document. This is a subjective test. The question is not whether a reasonable taxpayer might have made the same error or even whether this taxpayer failed to take all reasonable steps to ensure that the return was accurate. It is a question of the knowledge and intention of the particular taxpayer at the time. 64. The test of deliberate inaccuracy should be contrasted with that of careless inaccuracy. A careless inaccuracy occurs due to the failure by the taxpayer to take reasonable care (see paragraph 3(1)(a) of Schedule 24Finance Act 2007 and Harding v HMRC[2013] UKUT 575 (TCC) at [37]).”