Prime Minister Oresharski has said he is to pick a "moment" at the end of the month to step down.



While in Parliament, he has also added he would quit politics.



"The only thing that worries me is whether there will be a quorum when I hand my resignation," website Dariknews.bg quotes him as saying.



Wednesday's session in the Bulgarian Parliament was put off after MPs failed to reach quorum.



Far-right Ataka, which has long supported the cabinet, is partly behind the developments as it promised Tuesday to boycott the sessions until Parliament is dissolved.



The Prime Minister was also to attend a snap parliamentary control which was adjourned as lawmakers could not agree on the session's agenda.



But outside the plenary hall Oresharski commented on current affairs.



He thus shed light on a prospective deadline for the government to step down, with looming early elections in sight on October 5 and an interim government to be appointed by President Rosen Plevneliev as early as August 6.



"I had very brief political experience in 2003 and then I announced I would quit politics. As of today, I am keeping my promise. I do not belong to a single party and will continue to do so," Oresharski answered to a question whether he would seek a place in Bulgaria's political life after resigning.



Despite the fact that he left the Union of Democratic Forces (a party that spearheaded part of the political changes back in the 1990s) after coming under attack over a meeting with businessman Vasil Bozhkov, Oresharski continued his political career in 2005.



Then he became Finance Minister in the cabinet of the so-called "three-way coalition".



He assumed the office of Prime Minister in 2013 at the invitation of the Bulgarian Socialist Party (BSP), even though many socialist supporters pointed he was rather "right-leaning".



The Prime Minister also commented on the situation in Bulgaria's banks, after two of the country's biggest financial institutions were shaken over a fortnight in June.



In his words, the fact that a buffer of BGN 1.2 B (EUR 0.6 B) provided by the Finance Ministry as part of a liquidity support scheme planned for the banks has not yet been spent to help any of them shows the system is stable.



He described events concerning the First Investment Bank, where BGN 800 M were withdrawn in hours over rumors of alleged failure, as a "stress test" proving banks were capable of withstanding using their own resources.