SolvedCTM92610 | CTSA: quarterly instalments: amount due at each instalment: how to calculate ‘n’
From HM Revenue & Customs · Company Taxation Manual
Example 1
Accounting period 1 January 2012 to 31 December 2012 (12 months): n = 12.
Example 2
Accounting period 1 January 2012 to 31 July 2012 (7 months): n = 7.
Example 3
Accounting period 1 January 2012 to 28 July 2012 (6 months and 28 days).
28 / 30 x 100 = 93.33 recurring: n = 6.93.
Example 4
Accounting period 16 January 2012 to 28 July 2012 (6 months and 13 days).
13 / 30 x 100 = 43.33 recurring: n = 6.43.