Prime Ministers of Bulgaria
President Rosen Plevneliev and former caretaker Prime Minister Georgi Bliznashki are due to outline the results of the interim government's three-month tenure.
The event follows the transfer of power on Friday at which Boyko Borisov took over from Bliznashki as PM and his minority coalition supported by nationalist Patriotic Front and left-wing ABV assumed office.
Bulgaria's newly-appointed Prime Minister Boyko Borisov has said he expects that his ministers will be able to get Bulgaria out of the current "free fall".
"None of us is happy and satisfied," Borisov explained during the ceremony marking the transition of power held at the Council of Ministers after Parliament voted to approve the new government.