“… the Commissioners will not arrive reasonably at a decision if they take into account irrelevant matters, or fail to take into account all relevant matters”
“The mere fact that a taxpayer will pay more tax under the flat rate scheme is not considered exceptional for these purposes. In our view this is a rational policy. The flat rate scheme is intended to provide a measure of simplification for small businesses, and is intended to be revenue neutral. The objective of the scheme is not to provide a mechanism for small businesses to pay less VAT – and this is clear from the provisions of the VAT Directive which allow member states to implement simplified VAT accounting arrangements for small businesses. The flat rate scheme is based on average rates of input VAT recovery for business sectors – and as it is based on averages, it is inevitable that some taxpayers will pay more (or less) than the average. If taxpayers were allowed to join or withdraw from the scheme retrospectively, then this would defeat the simplification objectives of the scheme. Taxpayers could “game” the system – and join the scheme on a “punt”, and after three years review their input VAT and apply to withdraw from the scheme with retrospective effect if they found they would pay less VAT as a result.”