4(1)Section 22 (calculation) shall be amended as follows.
(2)In subsection (3) for “and housing benefit” there shall be substituted “ , housing benefit and any community charge benefit ”.
(3)After subsection (8) there shall be inserted—
“(8A)A person’s income in respect of a week shall be calculated in accordance with prescribed rules; and the rules may provide for the calculation to be made by reference to an average over a period (which need not include the week concerned).”