The punt will cease to be legal tender at midnight tonight when the euro becomes the only currency acceptable for goods and services.
However, banks will continue to change Irish notes and coins into euro for a time and the Central Bank will convert them indefinitely.
Ireland is only the second European state to dispense with its old notes and coins. Holland became the first to do this two weeks ago.
From tomorrow morning, people in the Republic will only be able to pay for goods and services with the euro, which was introduced on 1 January this year.
The head of the Euro Changeover Board, Philip Hamill, says that the currency switch has been remarkably successful.
