Kommerkiarios

The kommerkiarios (Greek: κομμερκιάριος) was a fiscal official of the Byzantine Empire charged with the collection of the imperial sales tax or kommerkion.

==History and functions== The kommerkiarios was perhaps the successor of the comes commerciorum, which was a late Roman controller of trade on the frontier. According to the late 4th-century Notitia Dignitatum, there were three comites commerciorum under the control of the comes sacrarum largitionum: one for Oriens and Egypt, one for Illyricum, and one for Moesia, Scythia Minor and Pontus (i.e. the Danube frontier and the Black Sea).