“84….It is clear from that guidance that the aim behind the Schedule 55 penalty regime is to penalise taxpayers who fail to comply with their obligations once a notice to file is issued and to incentivise them to comply with future notifications that they must file a tax return (and pay any tax due) on time. In our view, a penalty regime which seeks to incentivise taxpayers to comply with a requirement to file a return is a legitimate aim, regardless of whether it is subsequently determined that any tax is due. … 85. In our view, there is a reasonable relationship of proportionality between this legitimate aim and the penalty regime which seeks to realise it. The levels of penalty are fixed by Parliament and have an upper limit. In our view the regime establishes a fair balance between the public interest in ensuring that taxpayers file their returns on time and the financial burden that a taxpayer who does not comply with the statutory requirement will have to bear. 86. In view of what we have said about the legitimate aim of the penalty scheme, a penalty imposed in accordance with the relevant provisions of Schedule 55 FA 2009 cannot be regarded as disproportionate in circumstances where no tax is ultimately found to be due. It follows that such a circumstance cannot constitute a special circumstance for the purposes of paragraph 16 of Schedule 55 FA with the consequence that it is not a relevant circumstance that HMRC must take into account when considering whether special circumstances justify a reduction in a penalty.”