The referendum on the EU Fiscal Stability Treaty will take place on Thursday, May 31.
Tánaiste Eamon Gilmore announced the date after it was agreed by Government Ministers at a Cabinet meeting this morning.
“The Government will put in place a comprehensive campaign to ensure that voters are informed about the context of the treaty,” he said. “That in turn will facilitate a true debate.”
A Referendum Commission will be established to oversee the campaign once the Bill to amend the constitution is prepared.
Meanwhile, German politicians are demanding more time before agreeing to the Fiscal Treaty.
Plans by Chancellor Angela Merkel's Government to push through the pact on budget discipline by June have been rejected by opposition parties.
They have insisted that a number of policies to drive growth in the German economy are enacted as a condition for approving the fiscal compact, which needs the support of two thirds of the German parliament.