[1] He initially kept his position after Tsugba was succeeded by Anri Jergenia, but on 28 May 2002 was transferred to the State Tax Service, succeeding Konstantin Ozgan who had been elected to the People's Assembly.
[2] In November 2002, Jergenia was replaced as prime minister by Gennady Gagulia, who transformed the State Tax Service into a Ministry, and on 18 December, Lushba was appointed as the first Minister for Taxes and Fees.
[3][4] He remained in this post under Prime Ministers Raul Khajimba and Nodar Khashba, until the election of Sergei Bagapsh as president in 2005.
In September 2007, Lushba became First Vice President of Abkhazia's Chamber of Commerce, under Gagulia.
[1] On 7 June 2016, Lushba was appointed deputy Head of the Presidential Administration by President Raul Khajimba.