A warm and very humid evening/night to you all!
Thanks in advance for sparing your time and expertise. I'm looking through a potential client's previous accounts filed with Companies House and have discovered their most recent ones (ended 31/10/18) were dormant accounts (which did not match the 16/17 accounts filed). Having spoken to the accountants responsible, they took the client on with only a few days until the deadline and filed dormant accounts in a rush, apparently intending to amend them at a later date (this was never done). HMRC were also notified that no trading had taken place during the period, which they accepted. Apparently, no trading did take place during the period, but even so the balance sheet from the 16/17 accounts has just been completely ignored, plus there will have been payments of tax and possibly other transactions.
If I subsequently discovered that a Corporation Tax Return should have been filed due to the existence of trading income being earned or relevant purchases being made during the 'inactive' period, does anyone have any experience of how HMRC would treat this? As no previous CT600 has been filed for this period, but a notice of dormancy has been given and accepted, would any return be classed as an amended return? Would HMRC be likely to treat it as a late filing (it's still within the 12 month deadline for filing an amended return)? Finally, if any non-trading expenses were incurred during the period and a CT600 did not in fact need to be filed, is there any way these 'management expenses' could be carried forward and offset against the trading profits once trading started again?
Provided the correct information can be obtained, the actual accounts won't be a problem to produce as the amount of transactions during the active periods is extremely low. I'd just like to try and be as informed as possible regarding the potential repercussions of any correcting actions.
As always, thank you hugely for any advice you can offer.