6(1)Regulations under this Schedule may include provision empowering an authority, subject to such conditions as may be prescribed, to accept, in such cases as the authority may determine and in satisfaction of a person’s sole liability to pay in respect of a dwelling an amount (“the chargeable amount”) in respect of council tax for a financial year, an amount which—E+W+S
(a)is determined by the authority; and
(b)is payable in a single lump sum; and
(c)is less than the authority’s estimate of the chargeable amount.
(2)The regulations may include provision empowering or requiring the authority to make such adjustments (whether by way of an additional sum due to the authority or by way of repayment or credit by the authority or otherwise) as may be prescribed where the chargeable amount is subsequently estimated to be or proves to be greater or less than the amount originally (or last) estimated.
(3)The regulations may include, as regards a case where persons are jointly and severally liable to pay the chargeable amount, provision equivalent to that included under sub-paragraphs (1) and (2) above subject to any modifications the Secretary of State thinks fit.
(4)The regulations may include provision that, in a case where an authority has made provision by virtue of any of sub-paragraphs (1) to (3) above, any provision which is included in regulations under this Schedule by virtue of paragraph 2 or 3 above and is prescribed under this sub-paragraph shall not apply.