Self-employment contributions (increase in earnings ceiling).
9.—(1) Section 18 (1) of the Principal Act is hereby amended by the substitution in paragraph (d) of “£23,200” for “£22,300” (inserted by section 9 (1) (c) of the Act of 1996).
(2) This section shall come into operation on the 6th day of April, 1997.
