HC Deb 09 March 1970 vol 797 c250W
64. Mr. Sheldon

asked the Chancellor of the Exchequer if he will state the mathematical equation of figure 1 on page 5 of the 112th Report of the Commissioners of Inland Revenue expressed in terms of percentage rate of tax, personal allowance for single person, income, earned income reliefs, surtax rates, standard and reduced rates of income tax.

Mr. Taverne

I am afraid there is no simple mathematical expression to fit the diagram.

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