As we all know, HMRC IT is slow as mollasses. So when a Tax Return is filed, it can take up to 72 hours to process.
Once processed, looking at SA online, at the liabilities for the year you can usuallyu click a link to get a breakdown of the tax charge (between POAs, balancing charge, etc.)
Do those links appear once a NIL liability Return is filed and processed? Or does it just stay as it was before the Return. (can't recall another NIL return to check against).