Paragraph 12
(1)
The amendments made by paragraphs 1 to 4 have effect—
(a)
in relation to any payment of interest by a building society which is made on or after 1 September 2013, and
(b)
in relation to any other payment of interest which is made on or after 1 October 2013.
(2)
The amendments made by paragraphs 5 to 11 have effect in relation to any payment of interest which is made on or after the day on which this Act is passed.