MTD Quarterly Deadline Countdown

• Q1 2026/27 quarterly update (6 Apr – 5 Jul 2026)

  7 August 2026

  0 days

• Q2 2026/27 quarterly update (6 Jul – 5 Oct 2026)

  7 November 2026

  0 days

• Q3 2026/27 quarterly update (6 Oct 2026 – 5 Jan 2027)

  7 February 2027

  0 days

• Q4 2026/27 quarterly update (6 Jan – 5 Apr 2027)

  7 May 2027

  0 days

• Q1 2027/28 quarterly update (6 Apr – 5 Jul 2027)

  7 August 2027

  0 days

• Q2 2027/28 quarterly update (6 Jul – 5 Oct 2027)

  7 November 2027

  0 days

• Final declaration 2026/27 (replaces Self Assessment)

  31 January 2028

  0 days

• Q3 2027/28 quarterly update (6 Oct 2027 – 5 Jan 2028)

  7 February 2028

  0 days

• Q4 2027/28 quarterly update (6 Jan – 5 Apr 2028)

  7 May 2028

  0 days

From 6 April 2026, anyone in scope of MTD for Income Tax must submit four quarterly updates per tax year, plus one final declaration. The standard quarter ends are 5 July, 5 October, 5 January and 5 April — and the filing deadline is one month and seven days after each quarter end. Late submissions trigger HMRC's points-based penalty regime.