CTM94005 | CTSA: Penalties for late returns: General
From HM Revenue & Customs · Company Taxation Manual
Subject to the exemptions outlined below, a company that fails to deliver its company tax return by the filing date is liable to penalties under & 18.
The amount of penalty varies according to how long after the statutory filing date the company delivers its company tax return.
Penalties can be:
flat-rate, see ()
or
tax-related, see ().
Penalties are chargeable by determination under . Any authorised officer who handles CT cases can determine them.