Exempt income: calculation or estimation of F
10. For the purposes of paragraph 5(2) of Schedule 1 to the Act, the amount of F (exempt income of parent with care) shall be calculated in the same way as E is calculated under regulation 9 but as if references to the absent parent were references to the parent with care [except that—
(a)sub-paragraph (bb) of paragraph (1) of that regulation shall not apply unless at the time of the making of the qualifying transfer the parent with care would have been the absent parent had the Child Support Act 1991 been in force at the date of the making of the transfer; and
(b)paragraph (3) and (4) of that regulation shall apply only where the parent with care shares day to day care of the child mentioned in those paragraphs with one or more other persons.]