CTM90140 | CTSA: introduction: applicable legislation

From HM Revenue & Customs · Company Taxation Manual

Most of the administrative provisions for CTSA are set out in .

The table below lists the main CTSA provisions and shows IT equivalents.

Subject matterCTSA legislationEquivalent ITSA legislation
Duty to notify chargeability
Duty to deliver return - 5
Return to include SA - 8
Information about business carried on in partnership - (1C)
Filing date - (1H)
Amendment of return
Correction of return by HMRC
Failure to deliver return: flat-rate penalty
Failure to deliver return: tax-related penalty
‘Reasonable excuse’ and ‘further time’
Excuse for late delivery of return: Companies Act accountsNo ITSA equivalent
Duty to keep and preserve records - 22
Penalty for failure to keep and preserve records - (5B)
Enquiry into tax return - 26
Amendment of SA during enquiry to prevent loss of tax
Amendment of return during enquiry
Completion of enquiry
Direction to complete enquiry - (6)
Amendment of return after enquiry
Further return for outstanding periodNo ITSA equivalent
Determination where no return delivered
Determination: notice complied with in partNo ITSA equivalent
Extent of power to make determinationNo ITSA equivalent
Determination to have effect as SA
Determination superseded by SATMA70/S28AC (3)
Time limit for determinationFA98/SCH18/PARA36 (5) & 37 (4)
Time limit for SA superseding a determinationFA98/SCH18/PARA40 (3)
Discovery assessments - 45
Ordinary four year time limit for assessmentFA98/SCH18/PARA46 (1)
Extended time limit in cases of careless conductFA98/SCH18/PARA46 (2)
Extended time limit in cases of deliberate behaviour/failure to notify and other situationsFA98/SCH18/PARA46 (2A)
Discovery determinationsFA98/SCH18/PARA41 (2) & PARA49No ITSA equivalent
Relief for double assessment
Relief for overpaid tax
Recovery of excessive repayments etc - 53
General claim provisions, 10 ,54 - 60
Claims not made in returns
Claims for repayment of CT before liability finally establishedNo ITSA equivalent
Consequential claims - 65 - B, S36 (3)
Claims for group relief - 77No ITSA equivalent
Joint amended returnsNo ITSA equivalent
Claims for capital allowances - 83No ITSA equivalent
Conclusiveness of amounts stated in returnNo ITSA equivalent
Quarterly instalment payments, SI1998/3175 as amended by SI2017/1072 for very large companies for accounting periods beginning on or after 1 April 2019No ITSA equivalent