asked the Minister for Finance the base upon which calculations for income tax yield were assessed in respect of the tax years (a) 1987-88 and (b) 1988-89.
Written Answers. - Income Tax Yield.
92.
The estimate of income tax yield is prepared on a financial or calendar year basis. It comprises a number of different elements, including receipts from PAYE taxpayers, the self-employed, farmers, retention and witholding taxes and various miscellaneous sources.
The yields under the different tax headings are calculated individually using technical methodologies. These take account of many factors, such as the trend in yield in earlier years, the macro-economic outlook and special factors which may affect the different headings, for example, the consequential changes following revisions in income allowances and bands.
It is not the practice to disclose details of the methodologies.