(1)An accounting period of a company comes to an end on the first occurrence of any of the following—
(a)the ending of 12 months from the beginning of the accounting period,
(b)an accounting date of the company,
(c)if there is a period for which the company does not make up accounts, the end of that period,
(d)the company starting or ceasing to trade,
(e)if the company carries on only one trade, coming, or ceasing to be, within the charge to corporation tax in respect of that trade,
(f)if the company carries on more than one trade, coming, or ceasing to be, within the charge to corporation tax in respect of all the trades it carries on,
(g)the company becoming, or ceasing to be, UK resident,
(h)the company ceasing to be within the charge to corporation tax,
(i)the company entering administration, and
(j)the company ceasing to be in administration.
(2)If subsection (1)(i) applies, the accounting period is treated as having ended immediately before the day on which the company enters administration.
(3)For the purposes of this section a company enters administration—
(a)when it enters administration under Schedule B1 to the Insolvency Act 1986 (c. 45), or
(b)when it is subject to a corresponding procedure, other than one under that Act.
(4)For the purposes of this section a company ceases to be in administration—
(a)when it ceases to be in administration under Schedule B1 to the Insolvency Act 1986, or
(b)when a corresponding event occurs, other than under that Act.
(5)This section does not apply if section 12 (companies being wound up) applies.
(6)This section is subject to any provision of the Corporation Tax Acts which provides for an accounting period of a company to which this section applies to end at a different time.