Paragraph 2
Where the billing authority determines that 12 instalments are to be paid or transferred in discharge of each liability referred to in paragraph 1(2), the authority shall determine the schedule of instalments so as to require either–
(a)
that each instalment shall become due on the last working day of a different month in the financial year, or
(b)
that each instalment shall become due on the same working day of a different month in that financial year.