Amount of Charges
4.—(1) Where regulation 3 above applies, the amount of the reduction shall be calculated in accordance with the following formula:–
(2) In paragraph (1) above–
“A” is the amount of council tax benefit which that person receives in respect of that dwelling in respect of the relevant year;
“B” is the council tax for which that person is liable in respect of that dwelling in respect of the relevant year;
“C” is the amount which that person is liable to pay in respect of that dwelling in respect of the relevant year under a charges scheme, net of any discounts, exemptions and reliefs applicable under that scheme, for water charges or sewerage charges or both in respect of services actually received;
“D” is the amount which that person would be liable to pay in respect of that dwelling in respect of the relevant year under a charges scheme, if none of the discounts, exemptions and reliefs under that scheme were applicable, for water charges or sewerage charges or both in respect of services actually received;
“E” is the maximum potential charge which could be made by Scottish Water in respect of that dwelling in respect of the relevant year for water supply and sewerage services which could be received in respect of that dwelling;
“F” is £220;
“G” is the number of days in the relevant year for which that person is liable for council tax in respect of that dwelling; and
“R” is the amount of the reduction.
(3) In any case where R is zero or less, it shall be treated as zero.