§ Mr. Newtonasked the Chancellor of the Exchequer if he will give an estimate of the percentage by which the total yield of income tax would rise if all personal incomes were to rise by 10 per cent. while tax rates and allowances remained unchanged.
§ Mr. Robert Sheldon, pursuant to his reply [Official Report, 24th July 1978], gave the following information:
About 18 per cent.