More than 11.5 million taxpayers beat the Self Assessment deadline to file their tax return for the 2023 to 2024 tax year by 31 January and avoid a £100 late filing penalty, HM Revenue and Customs ...
Those who have registered for a self assessment tax return are sent a unique tax reference number (UTR) by regular mail, which can take time, but that number is yours for the long haul and you need it ...