The Bulgarian National Bank (Bulgarian: Българска народна банка, romanized: Balgarska narodna banka, IPA: [ˈbɤɫɡɐrskɐ nɐˈrɔdnɐ ˈbaŋkɐ]) is the central bank of the Republic of Bulgaria with its headquarters in Sofia. The BNB was established on 25 January 1879.