The Government has agreed to lease the Citywest Hotel in Dublin for two years to accommodate people arriving here from Ukraine.
The hotel, which has 756 rooms, can accommodate up to 2,000 people. There is also a conference centre attached to the hotel.
Around 300 people from Ukraine are currently staying in this centre.
Minister for Rural and Community Development Heather Humphreys was also due to seek Cabinet approval for a €10.5 million funding package to support the community response for people arriving from Ukraine.
The minister was expected to tell Cabinet colleagues that while communities are playing a central role in helping those fleeing the war additional funding is now required to continue to support those efforts.
Pending approval at Cabinet, €5m funding will be invested in the "Ireland for Ukraine Fund" which is run by Community Foundation for Ireland.
A further €5m will be used to support the local development companies, while €500,000 will be used to support volunteer centres that have seen a huge increase in demand for services.
The licence agreement between the Government and Citywest Hotel will allow for three people to be accommodated in each room.
Three meals per day and "ancillary" services will also be covered by the agreement.
Separately, Minister of State with responsibility for Postal Services Hildegarde Naughton was due to bring a financial support package to aid independently-run Post Offices.
The package will be worth between €10,000 and €12,000 to each post office as part of an effort to limit closures across the network.
There are currently around 900 post offices across the State, most of which are independently operated by postmasters who are not employees of An Post.
In the past Minister Naughton has said it was "vitally important" that Ireland did not repeat mistakes by allowing post offices to close.