It was formed in 1918 in Czechoslovakia through the unification of the Protestant churches of the Lutheran and Calvinist confessions.

In 2019, the church reported 69,715 baptized members[1] in more than 260 local congregations, which are broken down into 14 seniorates (presbyteries) throughout the Czech Republic.

[2] Since the end of Communist rule, the Czech Republic's censuses have recorded 203,996 members in 1991,[2] 117,212 in 2001,[3] and 51,936 in 2011.

This ban was mitigated in 1781 by issuing the Patent of Toleration that permitted Lutheran and Calvinist churches in the Habsburg monarchy but Protestants obtained full equality with the Catholic church legally only as late as in 1867, when Austria-Hungary was created.

[6] The ECCB was established in 1918 by the unification of all Lutheran and Calvinist churches in Bohemia, Moravia, and Silesia.