http://www.legislation.gov.uk/ukpga/2006/46/section/390Companies Act 2006 An Act to reform company law and restate the greater part of the enactments relating to companies; to make other provision relating to companies and other forms of business organisation; to make provision about directors' disqualification, business names, auditors and actuaries; to amend Part 9 of the Enterprise Act 2002; and for connected purposes.texttext/xmlenStatute Law Database2026-07-16Expert Participation2026-07-09 Companies Act 2006s. 479A(2)(c)(zi)The Statutory Auditors and Third Country Auditors (Amendment) (EU Exit) Regulations 2019reg. 4(b)(i)reg. 2Companies Act 2006Sch. 10 para. 6(2D)The Statutory Auditors and Third Country Auditors (Amendment) (EU Exit) Regulations 2019reg. 28(e)reg. 2Companies Act 2006Sch. 10 para. 7(2A)The Statutory Auditors and Third Country Auditors (Amendment) (EU Exit) Regulations 2019reg. 29(b)reg. 2Companies Act 2006ActThe Companies (Revision of Defective Accounts and Reports) (Amendment) Regulations 2013reg. 4reg. 1(1)Companies Act 2006ActThe Companies (Revision of Defective Accounts and Reports) (Amendment) Regulations 2013reg. 9(a)reg. 1(1)Companies Act 2006Sch. 11A para. 17E-17GEnglish Devolution and Community Empowerment Act 2026Sch. 36 para. 35s. 108(6) Part 15Chapter 33901A company's financial year is determined as follows.2Its first financial year—abegins with the first day of its first accounting reference period, andbends with the last day of that period or such other date, not more than seven days before or after the end of that period, as the directors may determine.3Subsequent financial years—abegin with the day immediately following the end of the company's previous financial year, andbend with the last day of its next accounting reference period or such other date, not more than seven days before or after the end of that period, as the directors may determine.4In relation to an undertaking that is not a company, references in this Act to its financial year are to any period in respect of which a profit and loss account of the undertaking is required to be made up (by its constitution or by the law under which it is established), whether that period is a year or not.5The directors of a parent company must secure that, except where in their opinion there are good reasons against it, the financial year of each of its subsidiary undertakings coincides with the company's own financial year.Ss. 390-392 applied (with modifications) (1.10.2008) by The Limited Liability Partnerships (Accounts and Audit) (Application of Companies Act 2006) Regulations 2008 (S.I. 2008/1911), reg. 7Ss. 390-392 excluded (6.4.2008) by The Bank Accounts Directive (Miscellaneous Banks) Regulations 2008 (S.I. 2008/567), reg. 4, Sch. para. 3Pt. 15 applied (with modifications) (6.4.2008) by The Bank Accounts Directive (Miscellaneous Banks) Regulations 2008 (S.I. 2008/567), reg. 4, Sch. para. 1 (with Sch. para. 11)Pt. 15 applied (with modifications) (6.4.2008) by The Partnerships (Accounts) Regulations 2008 (S.I. 2008/569), regs. 4, 7, Sch. Pt. 1Ss. 390-392 applied (with modifications) (1.10.2009) by The Overseas Companies regulations 2009 (S.I. 2009/1801), {reg. 37} (with Sch. 8)Ss. 390-392 applied (with modifications) (1.10.2009) by The Overseas Companies Regulations 2009 (S.I. 2009/1801), reg. 52 (with Sch. 8)Pt. 15 applied (with modifications) (1.10.2009) by The Unregistered Companies Regulations 2009 (S.I. 2009/2436), regs. 3-5, Sch. 1 para. 16 (with transitional provisions and savings in regs. 7, 9, Sch. 2)Ss. 380-416 applied (with modifications) (1.10.2009) by The Unregistered Companies Regulations 2009 (S.I. 2009/2436), regs. 3-5, Sch. 1 para. 10 (with transitional provisions and savings in regs. 7, 9, Sch. 2)Pts. 1-39 (except for Pt. 7 and ss. 662-669), 45-47 extended (12.5.2011) by The Companies Act 2006 (Consequential Amendments and Transitional Provisions) Order 2011 (S.I. 2011/1265), art. 5(1), Sch. 1 para. 2Pts. 1-39 modified (31.12.2020) by Regulation (EC) No. 2157/2001, Art. AAA1(3) (as inserted by The European Public Limited-Liability Company (Amendment etc.) (EU Exit) Regulations 2018 (S.I. 2018/1298), regs. 1, 97 (with regs. 140-145) (as amended by S.I. 2020/523, regs. 1(2), 5(a)-(f)); 2020 c. 1, Sch. 5 para. 1(1))Pt. 15 applied (with modifications) (8.12.2017) by The Risk Transformation Regulations 2017 (S.I. 2017/1212), regs. 1(2), 162, 163 (with reg. 189)S. 390 applied (with modifications) (31.7.2015) by The European Grouping of Territorial Cooperation Regulations 2015 (S.I. 2015/1493), regs. 1(2), 7(1) (with reg. 11)Ss. 380-414 applied (with modifications) (1.10.2009) by S.I. 2009/2436, regs. 3-5, Sch 1 para. 10 (with reg. 7, Sch. 2) (and the said Sch. 1 para. 10 is amended (with application in accordance with reg. 1(3) of the amending S.I.) by The Unregistered Companies (Amendment) Regulations 2013 (S.I. 2013/1972), regs. 1(2), 2(2)(a))