higher price for cloth, and will have smaller money incomes to buy it with; while the English will obtain linen cheaper, that is, its price will exceed what it previously was by less than the amount of the duty, while their means of purchasing it will be increased by the increase of their money incomes.
If the imposition of the tax does not diminish the demand, it will leave the trade exactly as it was before. We shall import as much, and export as much; the whole of the tax will be paid out of our own pockets.
But the imposition of a tax on a commodity, almost always diminishes the demand more or less; and it can never, or scarcely ever increase the demand. It may, therefore, be laid down as a principle, that a tax on imported commodities, when it really operates as a tax, and not as a prohibition, either total or partial, almost always falls in part upon the foreigners who consume our goods: and that this is a mode in which a nation may be almost sure of appropriating to itself, at the expense of foreigners, a larger share than would otherwise belong to it of the increase in the general productiveness of the labour and capital of the world, which results from the interchange of commodities among nations.
It is scarcely necessary to observe, that no such advantage can result from the duty, if it operate as a protecting duty; if it induce the country which imposes it, to produce for herself that which she would otherwise have imported. The saving of labour – the increase in the general productiveness of the capital of the world – which is the effect of commerce, and which a non-protecting duty would enable the country imposing it to engross, could not be engrossed by a protecting duty, because such a duty prevents any such increased production from existing.
With a view to practical legislation, therefore, duties on importation may be divided into two classes: those which have the effect of encouraging some particular branch of domestic industry, and those which have not.
The former are purely mischievous, both to the country imposing them, and to those with whom it trades. They prevent a saving of labour and capital, which, if permitted to be made, would be divided in some proportion or other between the importing country and the countries which buy what that country does or might export.
The other class of duties are those which do not encourage one mode of procuring an article at the expense of another, but allow interchange to take place just as if the duty did not exist – and to produce the saving of labour which constitutes the motive to international as to all other commerce. Of this kind, are duties on the importation of any commodity which could not by any possibility be produced at home; and duties not sufficiently high to counterbalance the difference of expense between the production of the article at home, and its importation. Of the money which is brought into the treasury of any country by taxes of this last description, a part only is paid by the people of that country; the remainder by the foreign consumers of their goods.
Nevertheless, this latter kind of taxes are in principle as ineligible as the former, although not precisely on the same ground. A protecting duty can never be a cause of gain, but always and necessarily of loss, to the country imposing it, just so far as it is efficacious to its end. A non-protecting duty on the contrary would, in most cases, be a source of gain to the country imposing it, in so far as throwing part of the weight of its taxes upon other people is a gain; but it would be a means of gain which it could seldom be advisable to adopt, being so easily counteracted by a precisely similar proceeding on the other side.
If England, in the case already supposed, sought to obtain for herself more than her natural share of the advantage of the trade with Germany, by imposing a duty upon cloth, Germany would only have to impose a duty upon linen, sufficient to diminish the demand for that article about as much as the demand for cloth had been diminished in England by the tax. Things would then be as before, and each country would pay its own tax. Unless, indeed, the sum of the two duties exceeded the entire advantage of the trade; for in that case the trade, and its advantage, would cease entirely.
There would be no advantage, therefore, in imposing duties of this kind, with a view to gain by them, in the manner which has been pointed out. But so long as any other kind of taxes on commodities are retained, as a source of revenue, these may often be as unobjectionable as the rest. It is evident, moreover, that considerations of reciprocity, which are quite unessential when the matter in debate is a protecting duty, are of material importance when the repeal of duties of this other description is discussed. A country cannot be expected to renounce the power of taxing foreigners, unless foreigners will in return practise towards itself the same forbearance. The only mode in which a country can save itself from being a loser by the duties imposed by other countries on its commodities, is to impose corresponding duties on theirs. Only it must take care that these duties be not so high as to exceed all that remains of the advantage of the trade, and put an end to importation altogether; causing the article to be either produced at home, or imported from another and a dearer market.
It is not necessary to apply the principles which we have stated to the case of bounties on exportation or importation. The application is easy, and the conclusions present nothing of particular interest or importance.
6. Any cause which alters the exports or imports from one country into another, alters the division of the advantage of interchange between those two countries. Suppose the discovery of a new process, by which some article of export, or some article not previously exported, can be produced so cheap as to occasion a great demand for it in other countries. This of course produces a great influx of money from other countries, and lowers the prices of all articles imported from them, until the increase of importation produced by this cause has restored the equilibrium. Thus, the country which acquires a new article of export gets its imports cheaper. This is not a case of mere alteration in the division of the advantage; it is a new advantage created by the discovery.
But suppose that the invention, to which the nation is indebted for this increase of the return to its industry, comes into use also in the other country, and that the process is one which can be as perfectly and as cheaply performed in the one country as in the other. The new exportation will cease; trade will revert to its old channels, the money which flowed in will again flow out, and the country which invented the process will lose that increase of its gain by trade, which it had derived from the discovery.
Now the exportation of machinery comes within the case which we have just described.
If the fact be, that by allowing to foreigners a participation in our machinery, we enable them to produce any of our leading articles of export, at a lower money price than we can sell those articles, it is certain that unless we possess as great an advantage in the production of the machinery itself as we have in the production of other articles by means of machinery, the permitting of its exportation would alter to our disadvantage the division of the benefit of trade. Our exports being diminished, we should have to pay a balance in money. This would raise, in foreign countries, the price of everything which we import from thence: while our incomes, being reduced in money value, would render us less able to buy those articles even if they had not risen. The equilibrium of exports and imports would only be restored, when either some of the latter became so dear that we could produce them cheaper at home, or some articles not previously exported became exportable from the fall of prices. In the one case, we lose the benefit of importation altogether, and are obliged to produce at home, at a greater cost. In the other case, we continue to import, but pay dearer for our imports.
Notwithstanding what has now been observed, restrictions on the exportation of machinery are not, in our opinion, justifiable, either on the score of international morality or of sound policy. It is evidently the common interest of all nations that each of them should abstain from every measure by which the aggregate wealth of the commercial world would be diminished, although of this smaller sum total it might thereby be enabled to attract to itself a larger share. And the time will certainly come when nations in general will feel the importance of this rule, and will so direct their approbation and disapprobation as to enforce observance of it. Moreover, a country possessing machines should consider that if a similar advantage were extended to other countries, they would employ it above all in the production of those articles, in which they had already the greatest natural advantages; and if the former country would be a loser by their improvements in the production of articles which it sells, it would gain by their improvements in those which it buys. The exportation of machinery may, however, be a proper subject