Octroi (0. Fr. octroyer, to grant, authorize; Lat. auctor)'s a local tax collected on various articles brought into a district for consumption. Antiquity Octroi taxes have a respectable antiquity, being known in Roman times as vectigalia. These vectigalia were either the portorium, a tax on the entry from or departure to the provinces (those cities which were allowed to levy the portorium shared the profits with the public treasury); the ansarium or foricarium, a duty levied at the entrance to t… (More on Octroi)