The UK tax year runs from 6 April to 5 April each year, and most Self Assessment Tax Returns must be submitted to HMRC by 31 January following the end of the tax year. Meeting these deadlines is essential, as late submissions or unpaid tax can result in penalties, interest charges and unnecessary stress. An accurate Tax Return also ensures you claim all available reliefs and allowable expenses while remaining fully compliant with HMRC. LDN Financial is here to prepare and submit your Tax Return accurately and on time, helping you meet your obligations and avoid costly mistakes.