§ Mr. Fieldasked the Secretary of State for Social Services pursuant to his reply of 23 October 1979 to the hon. Member for Birkenhead, if he will indicate the number of families subject to marginal tax rates of (a) 50 per cent. to 75 per cent. (b) 75 per cent. to 100 per cent. and (c) 493W 100 per cent. and over into one and two-parent families.
§ Mrs. Chalker[pursuant to her reply, 27 November 1979, c. 592…: In addition to the estimated 150,000 families with children who were theoretically subject to a range of "marginal tax rates" of 50 but less than 75 per cent., there were, as indicated by my reply to the hon. Member on 23 October, another 100,000 "families" in this theoretical situation as at December 1977. They consisted of childless married couples and single persons without children.