Self Assessment penalties: how late filing and late payment penalties stack up
Self Assessment penalties: how late filing and late payment penalties stack up One missed deadline, two penalty tracks Every January a familiar story plays out across the UK. The Self Assessment deadline of 31 January passes, the return is still unfinished, and the taxpayer assumes a single fine will follow. HMRC does not work that way. Late filing and late payment are punished on two separate tracks, each with its own escalating scale, and the two stacks add together. Understanding how they combine is the difference between a £100 sting and a bill running into thousands. The late filing penalty ladder The filing penalties apply the moment the clock passes midnight on 31 January, and they do not care whether you owe tax or are due a refund. An automatic £100 penalty applies even if you file one day late, and even if there is no tax to pay. If the return is still outstanding three months later, daily penalties of £10 a day begin, running for up to 90 days. That adds up to £9...