The deadline for company director self-assessments in the UK depends on whether the director submits their tax return online or by paper. For those submitting a paper self-assessment tax return, the deadline is 31 October following the end of the tax year. This means that for the 2024/2025 tax year, the deadline for paper submissions would be 31 October 2025. However, directors are en... https://xactaccountants.co.uk/self-assessment/