771.0.2.3.1. For the purposes of sections 771 and 771.0.2.2, the basic rate that must be determined in respect of a corporation for a taxation year under this section is equal to(a) if the taxation year begins before 1 January 2009, the total ofi. the proportion of 16.25% that the number of days in the taxation year that precede 21 February 2007 is of the number of days in the taxation year,
ii. the proportion of 9.9% that the number of days in the taxation year that follow 20 February 2007 but precede 1 June 2007 is of the number of days in the taxation year,
iii. the proportion of 11.9% if the corporation is a financial institution or an oil refining corporation, or of 9.9% in any other case, that the number of days in the taxation year that follow 31 May 2007 but precede 1 January 2008 is of the number of days in the taxation year,
iv. the proportion of 11.9% if the corporation is a financial institution or an oil refining corporation, or of 11.4% in any other case, that the number of days in the taxation year that follow 31 December 2007 but precede 1 January 2009 is of the number of days in the taxation year, and
v. the proportion of 11.9% that the number of days in the taxation year that follow 31 December 2008 is of the number of days in the taxation year;
(b) if the taxation year begins after 31 December 2008 and ends before 1 January 2017, 11.9%; and
(c) if the taxation year ends after 31 December 2016, the total ofi. the proportion of 11.9% that the number of days in the taxation year that precede 1 January 2017 is of the number of days in the taxation year,
ii. the proportion of 11.8% that the number of days in the taxation year that follow 31 December 2016 but precede 1 January 2018 is of the number of days in the taxation year,
iii. the proportion of 11.7% that the number of days in the taxation year that follow 31 December 2017 but precede 1 January 2019 is of the number of days in the taxation year,
iv. the proportion of 11.6% that the number of days in the taxation year that follow 31 December 2018 but precede 1 January 2020 is of the number of days in the taxation year, and
v. the proportion of 11.5% that the number of days in the taxation year that follow 31 December 2019 is of the number of days in the taxation year.