[1][2] Its liturgical usage is that of the Byzantine Rite in the Bulgarian language.

It was elevated from an Apostolic Exarchate to a full eparchy by Pope Francis on 12 October 2019.

[3] The cathedral church of the eparchy is the Cathedral of the Dormition (Катедрала Успение Богородично Катедрала Успение Богородично), in Bulgaria's capital Sofia.

It was established in 1926 as Apostolic Exarchate of Sofia, on Bulgarian territory split off from the suppressed Bulgarian Catholic Apostolic Vicariate of Constantinople and both its daughters Bulgarian Catholic Apostolic Vicariate of Macedonia and Bulgarian Catholic Apostolic Vicariate of Thrace (which also covered Greece, Turkey and Macedonia), reuniting the original Balkanic jurisdiction.

As per 2014, it pastorally served 10,000 Bulgarian (Byzantine Rite) Catholics in 20 parishes with 17 priests (4 diocesan, 13 religious), 42 lay religious (15 brothers, 27 sisters), and 1 seminarian.