The indirect taxes consisted - apart from the subordinate moneys levied from roads, bridges, and canals - mainly of customs-duties. The customs-duties of antiquity were, if not exclusively, at any rate principally port-dues, less frequently frontier-dues, on imports and exports destined for sale, and were levied by each community in its ports and its territory at discretion. The Romans recognized this principle generally, in so far as their original customs-domain did not extend farther than the range of the Roman franchise and the limit of the customs was by no means coincident with the limits of the empire, so that a general imperial tariff was unknown: it was only by means of state-treaty that a total exemption from customs-dues in the client communities was secured for the Roman state, and in various cases at least favourable term for the Roman burgess. But in those districts, which had not been admitted to alliance with Rome but were in the condition of subjects proper and had not acquired immunity, the customs fell as a matter of course to the proper sovereign, that is, to the Roman community; and in consequence of this several larger regions within the empire were constituted as separate Roman customs- districts, in which the several communities allied or privileged with immunity were marked off as exempt from Roman customs. Thus Sicily even from the Carthaginian period formed a closed customs-district, on the frontier of which a tax of 5 per cent on the value was levied from all imports or exports; thus on the frontiers of Asia there was levied in consequence of the Sempronian law[10] a similar tax of 21 per cent; in like manner the province of Narbo, exclusively the domain of the Roman colony, was organized as a Roman customs-district This arrangement, besides its fiscal objects, may have been partly due to the commendable purpose of checking the confusion inevitably arising out of a variety of communal tolls by a uniform regulation of frontier-dues. The levying of the customs, like that of the tenths, was without exception leased to middlemen.
The ordinary burdens of Roman taxpayers were limited to these imposts; but we may not overlook the fact, that the expenses of collection were very considerable, and the contributors paid an amount disproportionately great as compared with what the Roman government received. For, while the system of collecting taxes by middlemen, and especially by general lessees, is in itself the most expensive of all, in Rome effective competition was rendered extremely difficult in consequence of the slight extent to which the lettings were subdivided and the immense association of capital.
To these ordinary burdens, however, fell to be added in the first place the requisitions which were made. The costs of military administration were in law defrayed by the Roman community.
It provided the commandants of every province with the means of transport and all other requisites; it paid and provisioned the Roman soldiers in the province. The provincial communities had to furnish merely shelter, wood, hay, and similar articles free of cost to the magistrates and soldiers; in fact the free towns were even ordinarily exempted from the winter quartering of the troops - permanent camps were not yet known. If the governor therefore needed grain, ships, slaves to man them, linen, leather, money, or aught else, he was no doubt absolutely at liberty in time of war - nor was it far otherwise in time of peace - to demand such supplies according to his discretion and exigencies from the subject-communities or the sovereign protected states; but these supplies were, like the Roman land-tax, treated legally as purchases or advances, and the value was immediately or afterwards made good by the Roman exchequer. Nevertheless these requisitions became, if not in the theory of state-law, at any rate practically, one of the most oppressive burdens of the provincials; and the more so, that the amount of compensation was ordinarily settled by the government or even by the governor after a one-sided fashion. We meet indeed with several legislative restrictions on this dangerous right of requisition of the Roman superior magistrates: for instance, the rule already mentioned, that in Spain there should not be taken from the country people by requisitions for grain more than the twentieth sheaf, and that the price even of this should be equitably ascertained[11]; the fixing of a maximum quantity of grain to be demanded by the governor for the wants of himself and his retinue; the previous adjustment of a definite and high rate of compensation for the grain which was frequently demanded, at least from Sicily, for the wants of the capital. But, while by fixing such rules the pressure of those requisitions on the economy of the communities and of individuals in the province was doubtless mitigated here and there, it was by no means removed. In extraordinary crises this pressure unavoidably increased and often went beyond all bounds, for then in fact the requisitions not unfrequently assumed the form of a punishment imposed or that of voluntary contributions enforced, and compensation was thus wholly withheld. Thus Sulla in 670-671 compelled the provincials of Asia Minor, who certainly had very gravely offended against Rome, to furnish to every common soldier quartered among them forty-fold pay (per day 16
Further the local public burdens are not to be left out of view. They must have been, comparatively, very considerable[13]; for the costs of administration, the keeping of the public buildings in repair, and generally all civil expenses were borne by the local budget, and the Roman government simply undertook to defray the military expenses from their coffers. But even of this military budget considerable items were devolved on the communities - such as the expense of making and maintaining the non- Italian military roads, the costs of the fleets in the non-Italian seas, nay even in great part the outlays for the army, inasmuch as the forces of the client-states as well as those of the subjects were regularly liable to serve at the expense of their communities within their province, and began to be employed with increasing frequency even beyond it - Thracians in Africa, Africans in Italy, arid so on - at the discretion of the Romans[14]. If the provinces only and not Italy paid direct taxes to the government, this was equitable in a financial, if not in a political, aspect so long as Italy alone bore the burdens and expense of the military system; but from the time that this system was abandoned, the provincials were, in a financial point of view, decidedly overburdened.
Lastly we must not forget the great chapter of injustice by which in manifold ways the Roman magistrates and farmers of the revenue augmented the burden of taxation on the provinces. Although every present which the governor took might be treated legally as an exaction, and even his right of purchase might be restricted by law,
