More than two million taxpayers need to file their self-assessment returns by the end of February in order to avoid penalties.
More than 10.2 million customers filed their 2020/21 tax returns by the usual January 31 deadline, figures from HM Revenue and Customs (HMRC) show.
Some 2.3 million remaining customers who were expected to file by January 31 now have until February 28 to submit their late 2020/21 tax return and avoid a late filing penalty.