§ Mr. Austin MitchellTo ask the Chancellor of the Exchequer whether his estimates of the amount of tax paid on investment income are derived from the tax returns showing the investment income of husbands and wives separately.
§ Mr. Norman LamontEstimates of investment income are derived from a projection of the latest available survey of personal incomes. The information recorded in the survey uses details provided on tax returns where these are available. The tax return provides for details of the investment income of husbands and wives to be recorded separately. Where no up-to-date tax return is available for taxpayers covered by the survey, statistical estimates of investment income are made using other sources of data, such as the family expenditure survey.