Self Assessment 2025–26: Deadlines, Tax Return Dates and HMRC Guide
The 2025–26 UK tax year ran from 6 April 2025 to 5 April 2026. If you need to report income for that tax year, the main deadline for an online return and payment is 31 January 2027. The tax year and the year in which you file are different, which is why this guide refers…