5(1)This paragraph applies for the purposes of paragraphs 3 and 4 above.
(2)A is the non-domestic rating multiplier for the financial year preceding the year concerned.
(3)B is the retail prices index for September of the financial year preceding the year concerned; but if the Treasury so provide by order in relation to the year concerned, B is a figure which is less than that index and which is specified in (or calculated in a manner specified in) the order.
(4)C is the retail prices index for September of the financial year which precedes that preceding the year concerned.
(5)But where the base month for the retail prices index for September of the financial year which precedes that preceding the year concerned (the first year) differs from that for the index for September of the year which precedes the year concerned (the second year), C is the figure which the Secretary of State calculates would have been the retail prices index for September of the first year if the base month for that index had been the same as the base month for the index for September of the second year.
(6)D is the number of whole pounds in the Secretary of State’s estimate of the total of the appropriate rateable values of all appropriate hereditaments, where—
(a)appropriate rateable values are those shown (or to be shown) in lists for the last day of the financial year preceding the year concerned, and
(b)appropriate hereditaments are those so shown (or to be shown).
(7)E is the number of whole pounds in the Secretary of State’s estimate of the total of the appropriate rateable values of all appropriate hereditaments, where—
(a)appropriate rateable values are those shown (or to be shown) in lists for the first day of the financial year concerned, and
(b)appropriate hereditaments are those so shown (or to be shown).
(8)References in sub-paragraphs (3) to (5) above to the retail prices index are references to the general index of retail prices (for all items) published by the Department of Employment; and if that index is not published for a month for which it is relevant for the purposes of any of those sub-paragraphs, the sub-paragraph shall be taken to refer to any substituted index or index figures published by that Department.
(9)For the purposes of sub-paragraph (5) above the base month for the retail prices index for September of a particular year is the month for which the retail prices index is taken to be 100 and by reference to which the index for the September in question is calculated.
(10)Estimates under sub-paragraphs (6) and (7) above shall be made on the basis of information available to the Secretary of State on such date as he determines.
(11)In calculating a multiplier a part of a whole (if any) shall be calculated to three decimal places only—
(a)adding one thousandth where (apart from this sub-paragraph) there would be more than five ten-thousandths, and
(b)ignoring the ten-thousandths where (apart from this sub-paragraph) there would be five, or less than five, ten-thousandths.
(12)The power to make an order under sub-paragraph (3) above shall be exercisable by statutory instrument.
(13)An order under sub-paragraph (3) above in its application to a particular financial year (including an order amending or revoking another) shall not be effective unless it is approved by resolution of the House of Commons before the approval by that House of the revenue support grant report for the year or before 1 March in the preceding financial year (whichever is earlier).