MTD deadlines calendar
There are two possible quarter systems, and which one applies to you changes the dates. Pick yours below rather than guessing from a generic table.
Standard is the default unless you deliberately elected calendar quarters in your software before your first submission.
Next deadline for you
6 Apr – 5 Jul 2026
Due 7 August 2026 — 33 days away
| Period | Due |
|---|---|
| 6 Apr – 5 Jul 2026 | 07 Aug 2026 |
| 6 Apr – 5 Oct 2026 | 07 Nov 2026 |
| 6 Apr – 5 Jan 2027 | 07 Feb 2027 |
| 6 Apr – 5 Apr 2027 | 07 May 2027 |
| Final Declaration, 2026/27 tax year | 31 Jan 2028 |
Covers the 2026/27 tax year, the first mandated cycle. You can only switch between standard and calendar quarters before your first submission of the tax year, not partway through. Payment deadlines (31 January and 31 July) are separate and unaffected by which quarter system you use.
Want to know what happens if you miss one of these? The penalties guide covers what's actually charged and what isn't.