I am advised by Revenue that it is not possible to provide the information requested by the Deputy because the relevant data is not captured or maintained in a manner that allows segregation of rental income related tax liabilities.
Since 2015, Revenue records details of all compliance interventions on its case management system. However, the information is captured at tax head level (i.e. Income Tax, Corporation Tax etc.) and does not breakdown the recoveries or settlements into the component parts that gave rise to the additional liabilities (it is not uncommon for additional liabilities to arise from more than one area of default).
The Deputy may be interested to note that Revenue’s recently published Annual Report for 2018, which is available at link https://www.revenue.ie/en/corporate/press-office/annual-report/2018/ar-2018.pdf, includes details of audit and compliance activity with comparative figures for 2017. The tables included in pages 88 and 89 of the report might be of particular interest to the Deputy.