In order to ensure that institutions have sufficient time to meet the new required levels and definition of own funds, certain capital instruments that do not comply with the definition of own funds laid down in this Regulation should be phased out between 1 January 2013 and 31 December 2021. In addition, certain state-injected instruments should be recognised fully in own funds for a limited period. Furthermore, share premium accounts related to items that qualified as own funds under national transposition measures for Directive 2006/48/EC (opens EUR-Lex in a new tab) should under certain circumstances qualify as Common Equity Tier 1.