The Commission on Taxation report is expected to recommend a major crackdown on super-rich tax exiles when it is published later this week.
It describes the tax-exile laws here as inequitable and damaging to the integrity of the entire Irish tax code.
Currently, if an Irish citizen spends fewer than 183 days a year in Ireland, they can claim tax residence abroad.
It allows someone who is home and whose main business and economic interests are in Ireland to avoid paying income tax and capital gains tax.
But if the recommendations of the report are implemented by the Government, thousands of the super-rich will be brought back into the tax net.
The Government intended to address the issue of tax exiles in last year's Budget but postponed any action until the commission had investigated the matter.
The report also recommends a €1bn property tax, a carbon tax and domestic water charges.