HMRC's message · HTTP 400
For customers with ITSA status 'Annual' or a latent business income source, submission period has to be 6 April to 5 April
When it appears
Sending a self-employment update for a client HMRC does not treat as quarterly.
What to check
- The client's Making Tax Digital status for the year in HMRC's records.
- Whether the business is a new or dormant income source HMRC has marked as latent.
How to fix it
Send one update for 6 April to 5 April, or, if the client should be quarterly, resolve their status with HMRC first.
Making Tax Digital in Accountin
Accountin will send VAT returns and income tax updates to HMRC once HMRC grants it live access. It then shows HMRC's code and message next to a plain explanation, and keeps HMRC's reply against every submission.