CTM92815 - CTSA: quarterly instalments: very large companies: due dates: accounting period less than 12 months

When the accounting period is less than 12 months, the last instalment date will depend on which day of the month the end of the AP falls:

• if the AP ends on the last day of the month, the last instalment will be due 14 days after the end of the preceding month.
• if the AP ends on a day for which there is a corresponding date in the preceding month, the last instalment falls 14 days after that date in the preceding month.
• if the AP ends on a day for which there is no corresponding day in the previous month, the last instalment is due 14 days after the last day of the previous month.

Where, following the above rules, the last instalment date falls before the beginning of the accounting period, a single payment is due on the last day of the AP.

The first instalment date is 2 months and 13 days after the start of the AP. There is an exception to this if this date is on or after that on which the final instalment falls. If this occurs, the total liability is paid on the final instalment date.

The second instalment date is 3 months after the first, unless this falls on or after the final instalment date in which case the total liability is paid on the first instalment date.

The third instalment date is 3 months after the second, unless this falls on or after the final instalment date in which case the total liability is paid over the first, second and final instalment dates.

There are examples at CTM92820.