RULE_SUBMISSION_END_DATE_CANNOT_MOVE_BACKWARDS
HMRC says the submission end date cannot move backwards
First seen 24 October 2026. Updated 10 November 2026.
What it means
HMRC already hold figures for this business up to a later date in this tax year, and an update cannot end earlier than that. Send the update that ends on or after that date instead.
What to check
- Which quarters HMRC already hold an update for. Your obligations show the quarters that are met.
- Whether an update for a later quarter was sent from other software, or by your accountant.
- Send the update for the latest quarter HMRC hold, or a later one. Each update covers the tax year so far, so any earlier figure that needs correcting is corrected in it.
How we can help
Ask us if your obligations and this answer do not agree, and we will look at what HMRC returned to FileThat.
Contact usSee also
Back to all help