HC Deb 06 December 1968 vol 774 c599W
Mr. Carlisle

asked the Chancellor of the Exchequer what is his estimate of the loss of revenue to the Treasury of raising the tax allowance for a married couple from £320 to £440.

Mr. Roy Jenkins

To increase the married man's allowance from £340 (its present figure) to £440 would cost about £460 million for a full year.