In order to render any province advantageous to the empire to which it belongs, it ought to afford, in time of peace, a revenue to the public, sufficient not only for defraying the whole expense of its own peace establishment, but for contributing its proportion to the support of the general government of the empire. Every province necessarily contributes, more or less, to increase the expense of that general government. If any particular province, therefore, does not contribute its share towards defraying this expense, an unequal burden must be thrown upon some other part of the empire. The extraordinary revenue, too, which every province affords to the public in time of war, ought, from parity of reason, to bear the same proportion to the extraordinary revenue of the whole empire, which its ordinary revenue does in time of peace. That neither the ordinary nor extraordinary revenue which Great Britain derives from her colonies, bears this proportion to the whole revenue of the British empire, will readily be allowed. The monopoly, it has been supposed, indeed, by increasing the private revenue of the people of Great Britain, and thereby enabling them to pay greater taxes, compensates the deficiency of the public revenue of the colonies. But this monopoly, I have endeavoured to show, though a very grievous tax upon the colonies, and though it may increase the revenue of a particular order of men in Great Britain, diminishes, instead of increasing, that of the great body of the people, and consequently diminishes, instead of increasing, the ability of the great body of the people to pay taxes. The men, too, whose revenue the monopoly increases, constitute a particular order, which it is both absolutely impossible to tax beyond the proportion of other orders, and extremely impolitic even to attempt to tax beyond that proportion, as I shall endeavour to show in the following book. No particular resource, therefore, can be drawn from this particular order.
The colonies may be taxed either by their own assemblies, or by the parliament of Great Britain.