10(1)The Secretary of State may make regulations containing rules for the calculation of an amount for a financial year in relation to each levying authority (to be called its non-domestic rating contribution for the year).
(2)Subject to sub-paragraph (3) below, the rules shall be so framed that the amount calculated under them in relation to an authority is broadly the same as the total which would be payable to that authority if there were added—
(a)any sum paid to them by way of a contribution in aid made in respect of lands and heritages which, but for any rule of law relating to Crown exemption, would be liable to non-domestic rates; and
(b)the sum which, if the authority acted diligently, would be payable to them in respect of non-domestic rates for that year.
(3)The Secretary of State may incorporate in the rules provision for deductions (of such extent (if any) as he thinks fit) as regards—
(a)the operation of—
(i)section 243A (relief of rates in respect of lands and heritages occupied only for a short time) of the 1947 Act;
(ii)section 244 (remission of rates on account of poverty) of the 1947 Act; and
(iii)section 4(5) (reduction and remission of rates payable by charitable and other organisations) of the M1Local Government (Financial Provisions) (Scotland) Act 1962;
(b)the costs of collection and recovery; and
(c)such other matters (if any) as he thinks fit.
(4)Regulations under this paragraph in their application to a particular financial year (including regulations amending or revoking others) shall not be effective unless they come into force before 1st January in the preceding financial year.