HMRC's message · HTTP 400
No income submissions exist for the tax year
When it appears
Triggering a calculation or submitting a final declaration.
What to check
- That the quarterly updates, or the annual figures, were accepted by HMRC.
How to fix it
Send the income figures first, then trigger the calculation.
Making Tax Digital in Accountin
Accountin shows HMRC's code and message next to a plain explanation, and keeps HMRC's reply against every submission.