Leo Varadkar will today be elected as Ireland's youngest ever Tasoieach.
Enda Kenny will nominate his successor Leo Varadkar as Taoiseach in the Dáil today.
Mr Kenny, who officially stepped down as the country’s leader yesterday, will make a short address in the Dáil before proposing Mr Varadkar as the new Taoiseach.
Fine Gael’s Dublin Rathdown TD Josepha Madigan will second Mr Varadkar in the Dáil.
Ms Madigan is a first-time TD and was an influential member of Mr Varadkar’s Fine Gael election campaign team.
The Dáil vote and debate on the Taoiseach is scheduled for midday.
The new Taoiseach will then travel to Áras an Uachtaráin to receive his seal of office.
He is then due to take calls with world leaders who will congratulate Mr Varadkar on his appointment.
It is expected he will begin calling TDs and ministers about Cabinet changes at this stage.
The new Cabinet will be presented to the Dáil at around 6pm.
Among those tipped for promotion are junior ministers Michael Ring and Eoghan Murphy. Mr Murphy led Mr Varadkar's leadership campaign.
Speaking this morning Mr Kenny said he was "happy to conclude my business as Taoiseach" at the launch of National Gallery of Ireland.
Kenny attended the event with his Minister Heather Humphreys and Paschal Donohoe. Asked if he had any words of advice for Leo Varadkar he replied:
"I am here to open the gallery that's what I'm confining my business to at the moment. The Dáil will do its business afterwards and I want to wish Leo and the ministers the best of luck in the many challenges ahead.
"The country is in good shape, much better than it was and I'm sure the incoming government will mind itself very carefully in the interests of the people"