(1) The Principal Act is amended -
(i) in section 256(1) -
(I) by the substitution for paragraph (a) of the definition of "appropriate tax" of the following:
"(a) in the case of interest paid in respect of a relevant deposit or relevant deposits held in -
(i) a special savings account, or
(ii) a special term account,
at the rate of 20 per cent,",
(II) by the insertion after the definition of "building society" of the following:
"'credit union' means a society registered under the Credit Union Act, 1997, including a society deemed to be so registered under section 5(3) of that Act;",
(III) by the insertion after the definition of "interest" of the following:
"'long term account' means an account opened by an individual with a relevant deposit taker on terms under which the individual has agreed that each relevant deposit held in the account is to be held in the account for a period of not less than 5 years;
'medium term account' means an account opened by an individual w
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