Ireland takes the plunge - sacrificing the 12.5% corporate tax rate that for two decades has been credited with being the secret of our success, but also the source of much criticism.
Minister for Finance Paschal Donohoe admits it could cost €2bn a year, but insists it is the right thing to do, and says we have been planning for it.
Join the RTÉ Politics team, David Murphy, Micheál Lehane, Sandra Hurley and host, Paul Cunningham, to assess the scale of this radical - and arguably unavoidable - departure.
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