Date Event
31 January 2026 Submit self-assessment tax return for 2024-25 tax year
06 April 2026 Start keeping records using MTD for Income Tax software
07 August 2026 First quarterly update
07 November 2026 Second quarterly update
31 January 2027 Submit self-assessment tax return in usual way for 2025-26
07 February 2027 Third quarterly update
07 May 2027 Fourth quarterly update
07 August 2027 First quarterly update for 2027-28
07 November 2027 Second quarterly update
31 January 2028 Submit tax return straight to HMRC from MTD for Income Tax software for 2026-27
07 February 2028 Third quarterly update
07 May 2028 Fourth quarterly update
