CTSA: quarterly instalments: amount due at each instalment: formula
The amount of tax to be paid at each instalment date is:
3 x CTI
- ‘CTI’ is the amount of the company’s total liability, as described in CTM92520, for the accounting period that is payable by instalments.
‘n’ is the number of months in the accounting period.
Part months are calculated by dividing the number of spare days by 30 and expressing the sum as a decimal to two places, rounded arithmetically.