4.—(1) The amount for the purposes of paragraphs 1(1)(c) and 2)(d) of Schedule 6 in respect of a family of which at least one member is a child or young person is to be—
(a)where the applicant is a lone parent to whom sub-paragraph (2) applies, £22.20;
(b)in any other case, £17.40.
(2) The amount in sub-paragraph (1)(a) is to be applicable to a lone parent—
(a)who was entitled to council tax benefit on 5th April 1998 and whose applicable amount on that date included the amount applicable under paragraph 3(1)(a) of Schedule 1 to the Council Tax Benefit (Persons who have attained the qualifying age for state pension credit) Regulations 2006 as in force on that date; or
(b)on becoming entitled to council tax benefit where that lone parent—
(i)had been treated as entitled to that benefit in accordance with sub-paragraph (3) as at the day before the date of claim for that benefit; and
(ii)was entitled to housing benefit as at the date of claim for council tax benefit or would have been entitled to housing benefit as at that date had that day not fallen during a rent free period as defined in regulation 81 of the Housing Benefit Regulations 2006,
and in respect of whom, all of the conditions specified in sub-paragraph (3) have continued to apply.
(3) The conditions specified for the purposes of sub-paragraph (2) are that, in respect of the period commencing on 6th April 1998—
(a)the applicant has not ceased to be entitled, or has not ceased to be treated as entitled, to—
(i)council tax benefit (in relation to the period prior to 1st April 2013), and
(ii)a reduction under an authority’s scheme (in relation to the period commencing on 1st April 2013);
(b)the applicant has not ceased to be a lone parent;
(c)where the applicant was entitled to income support or to an income-based jobseeker’s allowance on 5th April 1998, the applicant has continuously, since that date, been entitled to income support, an income-based jobseeker’s allowance or income-related employment and support allowance or a combination of those benefits;
(d)where the applicant was not entitled to income support or to an income-based jobseeker’s allowance on 5th April 1998, the applicant has not become entitled to income support, an income-based jobseeker’s allowance or an income-related employment and support allowance; and
(e)a premium under paragraph 9, or a component under paragraph 21 or 22, has not become applicable to the applicant.
(4) For the purposes of sub-paragraphs (2)(b)(i) and (3)(a), an applicant is to be treated as entitled to council tax benefit during any period where the applicant was not, or had ceased to be, so entitled and—
(a)throughout that period, the applicant had been awarded housing benefit and the applicant’s applicable amount included the amount applicable under paragraph 3(1)(a) of Schedule 3 to the Housing Benefit Regulations 2006 (lone parent rate of family premium); or
(b)the applicant would have been awarded housing benefit during that period had that period not been a rent free period as defined in regulation 81 of the Housing Benefit Regulations 2006 and the applicant’s applicable amount throughout that period would have included the amount applicable under paragraph 3(1)(a) of Schedule 3 to those Regulations.