(1) The Principal Act is amended by inserting the following section after section 172:

"Qualified child for purposes of one-parent family payment.

172A.  In this Chapter, other than section 174(1), 'qualified child' means -

(a) a person who is ordinarily resident in the State,

(b) is not detained in a children detention school, and

(c) has -

(i) not attained the age of 14 years, or

(ii) attained the age of 14 years but has not attained the age of 16 years and is a child in respect of whom a payment under Chapter 8A of Part 3 is in payment.".

(2) Section 173 of the Principal Act is amended -

(a) by substituting the following subsection for subsection (3) (as amended by section 8 of the Act of 2008):

"(3) Subject to this Act, a one-parent family payment shall not be payable to a qualified parent whose gross weekly earnings (including wages and profit from any form of self-employment) calculated or estimated in the manner that may be prescribed exceed €425.",