HC Deb 26 February 1957 vol 565 c1033
36. Sir K. Joseph

asked the Chancellor of the Exchequer what is his estimate of the approximate rates of Income Tax and company tax which would produce the same yields in real terms as now if the gross national product were, also in real terms, 5 per cent., 10 per cent. and 20 per cent., respectively, greater than in 1955.

Mr. P. Thorneycroft

They would be lower, but how much lower depends on so many and so various assumptions about the composition of the gross national product as to be incalculable.

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