It cost almost €500,000 to hold Dáil and Seanad sittings in the Convention Centre in just one month.
The new figures have been released under the Freedom of Information Act.
For social-distancing reasons, several sittings of the Dáil and Seanad have taken place in the Convention Centre.
The first was held on June 27th, when TDs met to elect Micheál Martin as the Taoiseach.
The Dáil continues to sit in the centre when all members need to be present to vote.
The Seanad mostly sits in the Dáil Chamber in Leinster House, but initially sat in the Convention Centre.
The total cost of Dáil and Seanad sittings in the centre was €499,476, up to the summer recess at the end of July.
The Convention Centre isn't charging for the use of the centre, and the costs mainly relate to staffing and broadcast technology.
