That the mercantile system has not been very favourable to the revenue of the great body of the people, to the annual produce of the land and labour of the country, I have endeavoured to show in the fourth book of this Inquiry. It seems not to have been more favourable to the revenue of the sovereign, so far at least as that revenue depends upon the duties of customs.

In consequence of that system, the importation of several sorts of goods has been prohibited altogether. This prohibition has in some cases entirely prevented, and in others has very much diminished the importation of those commodities by reducing the importers to the necessity of smuggling. It has entirely prevented the importation of foreign woollens, and it has very much diminished that of foreign silks and velvets. In both cases it has entirely annihilated the revenue of customs which might have been levied upon such importation.

The high duties which have been imposed upon the importation of many different sorts of foreign goods, in order to discourage their consumption in Great Britain, have in many cases served only to encourage smuggling, and in all cases have reduced the revenue of the customs below what more moderate duties would have afforded. The saying of Dr. Swift, that in the arithmetic of the customs two and two, instead of making four, make sometimes only one, holds perfectly true with regard to such heavy duties which never could have been imposed had not the mercantile system taught us, in many cases, to employ taxation as an instrument, not of revenue, but of monopoly.

The bounties which are sometimes given upon the exportation of home produce and manufactures, and the drawbacks which are paid upon the re-exportation of the greater part of foreign goods, have given occasion to many frauds, and to a species of smuggling more destructive of the public revenue than any other. In order to obtain the bounty or drawback, the goods, it is well known, are sometimes shipped and sent to sea, but soon afterwards clandestinely relanded in some other part of the country. The defalcation of the revenue of customs occasioned by the bounties and drawbacks, of which a great part are obtained fraudulently, is very great. The gross produce of the customs in the year which ended on the 5th of January 1755 amounted to #5,068,000. The bounties which were paid out of this revenue, though in that year there was no bounty upon corn, amounted to #167,800. The drawbacks which were paid upon debentures and certificates, to #2,156,800. Bounties and drawbacks together amounted to #2,324,600. In consequence of these deductions the revenue of the customs amounted only to #2,743,400: from which, deducting #287,900 for the expense of management in salaries and other incidents, the net revenue of the customs for that year comes out to be #2,455,500. The expense of management amounts in this manner to between five and six per cent upon the gross revenue of the customs, and to something more than ten per cent upon what remains of that revenue after deducting what is paid away in bounties and drawbacks.

Heavy duties being imposed upon almost all goods imported, our merchant importers smuggle as much and make entry of as little as they can. Our merchant exporters, on the contrary, make entry of more than they export; sometimes out of vanity, and to pass for great dealers in goods which pay no duty, and sometimes to gain a bounty or a drawback. Our exports, in consequence of these different frauds, appear upon the customhouse books greatly to overbalance our imports, to the unspeakable comfort of those politicians who measure the national prosperity by what they call the balance of trade.

All goods imported, unless particularly exempted, and such exemptions are not very numerous, are liable to some duties of customs. If any goods are imported not mentioned in the book of rates, they are taxed at 4s. 9 9/20d. for every twenty shillings value, according to the oath of the importer, that is, nearly at five subsidies, or five poundage duties. The book of rates is extremely comprehensive, and enumerates a great variety of articles, many of them little used, and therefore not well known. It is upon this account frequently uncertain under what article a particular sort of goods ought to be classed, and consequently what duty they ought to pay. Mistakes with regard to this sometimes ruin the custom-house officer, and frequently occasion much trouble, expense, and vexation to the importer. In point of perspicuity, precision, and distinctness, therefore, the duties of customs are much more inferior to those of excise.

In order that the greater part of the members of any society should contribute to the public revenue in proportion to their respective expense, it does not seem necessary that every single article of that expense should be taxed. The revenue which is levied by the duties of excise is supposed to fall as equally upon the contributors as that which is levied by the duties of customs, and the duties of excise are imposed upon a few articles only of the most general use and consumption. It has been the opinion of many people that, by proper management, the duties of customs might likewise, without any loss to the public revenue, and with great advantage to foreign trade, be confined to a few articles only.

The foreign articles of the most general use and consumption in Great Britain seem at present to consist chiefly in foreign wines and brandies; in some of the productions of America and the West Indies - sugar, rum, tobacco, cocoanuts, etc.; and in some of those of the East Indies - tea, coffee, china-ware, spiceries of all kinds, several sorts of piece-goods, etc. These different articles afford, perhaps, at present, the greater part of the revenue which is drawn from the duties of customs. The taxes which at present subsist upon foreign manufactures, if you except those upon the few contained in the foregoing enumeration, have the greater part of them been imposed for the purpose, not of revenue, but of monopoly, or to give our own merchants an advantage in the home market. By removing all prohibitions, and by subjecting all foreign manufactures to such moderate taxes as it was found from experience afforded upon each article the greatest revenue to the public, our own workmen might still have a considerable advantage in the home market, and many articles, some of which at present afford no revenue to government, and others a very inconsiderable one, might afford a very great one.

High taxes, sometimes by diminishing the consumption of the taxed commodities, and sometimes by encouraging smuggling, frequently afford a smaller revenue to government than what might be drawn from more moderate taxes.

When the diminution of revenue is the effect of the diminution of consumption there can be but one remedy, and that is the lowering of the tax.

When the diminution of the revenue is the diminution of the revenue is the effect of the encouragement given to smuggling, it may perhaps be remedied in two ways; either by diminishing the temptation to smuggle, or by increasing the difficulty of smuggling. The temptation to smuggle can be diminished only by the lowering of the tax, and the difficulty of smuggling can be increased only by establishing that system of administration which is most proper for preventing it.

The excise laws, it appears, I believe, from experience, obstruct and embarrass the operations of the smuggler much more effectually than those of the customs. By introducing into the customs a system of administration as similar to that of the excise as the nature of the different duties will admit, the difficulty of smuggling might be very much increased. This alteration, it has been supposed by many people, might very easily be brought about.

The importer of commodities liable to any duties of customs, it has been said, might as his option be allowed either to carry them to his own private warehouse, or to lodge them in a warehouse provided either at his own expense or at that of the public, but under the key of the custom-house officer, and never to be opened but in his presence. If the merchant carried them to his own private warehouse, the duties to be immediately paid, and never afterwards to be drawn back, and that warehouse to be at all times subject to the visit and examination of the custom-house officer, in order to ascertain how far the quantity contained in it corresponded with that for which the duty had been paid. If he carried them to the public warehouse, no duty to be paid till they were taken out for home consumption. If taken out for exportation, to be duty free, proper security being always given that they should be so exported. The dealers in those particular commodities, either by wholesale or retail, to be at all times subject to the visit and examination of the custom-house officer, and to be obliged to justify by proper certificates the payment of the duty upon the whole quantity contained in their shops or warehouses. What are called the excise-duties upon rum imported are at present levied in this manner, and the same system of administration might perhaps be extended to all duties upon goods imported, provided always that those duties were, like the duties of excise, confined to a few sorts of goods of the most general use and consumption. If they were extended to almost all sorts of goods, as at present, public warehouses of sufficient extent could not easily be provided, and goods of a very delicate nature, or of which the preservation required much care and attention, could not safely be trusted by the merchant in any warehouse but his own.

If by such a system of administration smuggling, to any considerable extent, could be prevented even under pretty high duties, and if every duty was occasionally either heightened or lowered according as it was most likely, either the one way or the other, to afford the greatest revenue to the state, taxation being always employed as an instrument of revenue and never of monopoly, it seems not improbable that a revenue at least equal to the present net revenue of the customs might be drawn from duties upon the importation of only a few sorts of goods of the most general use and consumption, and that the duties of customs might thus be brought to the same degree of simplicity, certainty, and precision as those of excise. What the revenue at present loses by drawbacks upon the re-exportation of foreign goods which are afterwards relanded and consumed at home would under this system be saved altogether. If to this saving, which would alone be very considerable, were added the abolition of all bounties upon the exportation of home produce in all cases in which those bounties were not in reality drawbacks of some duties of excise which had before been advanced, it cannot well be doubted but that the net revenue of customs might, after an alteration of this kind, be fully equal to what it had ever been before.

If by such a change of system the public revenue suffered no loss, the trade and manufactures of the country would certainly gain a very considerable advantage. The trade in the commodities not taxed, by far the greatest number, would be perfectly free, and might be carried on to and from all parts of the world with every possible advantage. Among those commodities would be comprehended all the necessaries of life and all the materials of manufacture. So far as the free importation of the necessaries of life reduced their average money price in the home market it would reduce the money price of labour, but without reducing in any respect its real recompense. The value of money is in proportion to the quantity of the necessaries of life which it will purchase. That of the necessaries of life is altogether independent of the quantity of money which can be had for them. The reduction in the money price of labour would necessarily be attended with a proportionable one in that of all home manufactures, which would thereby gain some advantage in all foreign markets. The price of some manufactures would be reduced in a still greater proportion by the free importation of the raw materials. If raw silk could be imported from China and Indostan duty free, the silk manufacturers in England could greatly undersell those of both France and Italy. There would be no occasion to prohibit the importation of foreign silks and velvets. The cheapness of their goods would secure to our own workmen not only the possession of the home, but a very great command of the foreign market. Even the trade in the commodities taxed would be carried on with much more advantage than at present. If those commodities were delivered out of the public warehouse for foreign exportation, being in this case exempted from all taxes, the trade in them would be perfectly free. The carrying trade in all sorts of goods would under this system enjoy every possible advantage. If those commodities were delivered out for home consumption, the importer not being obliged to advance the tax till he had an opportunity of selling his goods, either to some dealer, or to some consumer, he could always afford to sell them cheaper than if he had been obliged to advance it at the moment of importation. Under the same taxes, the foreign trade of consumption even in the taxed commodities might in this manner be carried on with much more advantage than it can be at present.

It was the object of the famous excise scheme of Sir Robert Walpole to establish, with regard to wine and tobacco, a system not very unlike that which is here proposed. But though the bill which was then brought into Parliament comprehended those two commodities, only it was generally supposed to be meant as an introduction to a more extensive scheme of the same kind, faction, combined with the interest of smuggling merchants, raised so violent, though so unjust, a clamour against that bill, that the minister thought proper to drop it, and from a dread of exciting a clamour of the same kind, none of his successors have dared to resume the project.

The duties upon foreign luxuries imported for home consumption, though they sometimes fall upon the poor, fall principally upon people of middling or more than middling fortune. Such are, for example, the duties upon foreign wines, upon coffee, chocolate, tea, sugar, etc.

The duties upon the cheaper luxuries of home produce destined for home consumption fall pretty equally upon people of all ranks in proportion to their respective expense. The poor pay the duties upon malt, hops, beer, and ale, upon their own consumption: the rich, upon both their own consumption and that of their servants.

The whole consumption of the inferior ranks of people, or of those below the middling rank, it must be observed, is in every country much greater, not only in quantity, but in value, than that of the middling and of those above the middling rank. The whole expense of the inferior is much greater than that of the superior ranks. In the first place, almost the whole capital of every country is annually distributed among the inferior ranks of people as the wages of productive labour. Secondly, a great part of the revenue arising from both the rent of land and the profits of stock is annually distributed among the same rank in the wages and maintenance of menial servants, and other unproductive labourers. Thirdly, some part of the profits of stock belongs to the same rank as a revenue arising from the employment of their small capitals. The amount of the profits annually made by small shopkeepers, tradesmen, and retailers of all kinds is everywhere very considerable, and makes a very considerable portion of the annual produce. Fourthly, and lastly, some part even of the rent of land belongs to the same rank, a considerable part of those who are somewhat below the middling rank, and a small part even to the lowest rank, common labourers sometimes possessing in property an acre or two of land. Though the expense of those inferior ranks of people, therefore, taking them individually, is very small, yet the whole mass of it, taking them collectively, amounts always to by much the largest portion of the whole expense of the society; what remains of the annual produce of the land and labour of the country for the consumption of the superior ranks being always much less, not only in quantity, but in value. The taxes upon expense, therefore, which fall chiefly upon that of the superior ranks of people, upon the smaller portion of the annual produce, are likely to be much less productive than either those which fall indifferently upon the expense of all ranks, or even those which fall chiefly upon that of the inferior ranks; than either those which fall indifferently upon the whole annual produce, or those which fall chiefly upon the larger portion of it. The excise upon the materials and manufacture of home-made fermented and spirituous liquors is accordingly, of all the different taxes upon expense, by far the most productive; and this branch of the excise falls very much, perhaps principally, upon the expense of the common people. In the year which ended on the 5th of July 1775, the gross produce of this branch of the excise amounted to #3,341,837 9s. 9d.

It must always be remembered, however, that it is the luxurious and not the necessary expense of the inferior ranks of people that ought ever to be taxed. The final payment of any tax upon their necessary expense would fall altogether upon the superior ranks of people; upon the smaller portion of the annual produce, and not upon the greater. Such a tax must in all cases either raise the wages of labour, or lessen the demand for it. It could not raise the wages of labour without throwing the final payment of the tax upon the superior ranks of people. It could not lessen the demand for labour without lessening the annual produce of the land and labour of the country, the fund from which all taxes must be finally paid. Whatever might be the state to which a tax of this kind reduced the demand for labour, it must always raise wages higher than they otherwise would be in that state, and the final payment of this enhancement of wages must in all cases fall upon the superior ranks of people.

Fermented liquors brewed, and spirituous liquors distilled, not for sale, but for private use, are not in Great Britain liable to any duties of excise. This exemption, of which the object is to save private families from the odious visit and examination of the tax-gatherer, occasions the burden of those duties to fall frequently much lighter upon the rich than upon the poor. It is not, indeed, very common to distil for private use, though it is done sometimes. But in the country many middling and almost all rich and great families brew their own beer. Their strong beer, therefore, costs them eight shillings a barrel less than it costs the common brewer, who must have his profit upon the tax as well as upon all the other expense which he advances. Such families, therefore, must drink their beer at least nine or ten shillings a barrel cheaper than any liquor of the same quality can be drunk by the common people, to whom it is everywhere more convenient to buy their beer, by little and little, from the brewery or the alehouse. Malt, in the same manner, that is made for the use of a private family is not liable to the visit or examination of the tax-gatherer; but in this case the family must compound at seven shillings and sixpence a head for the tax. Seven shillings and sixpence are equal to the excise upon ten bushels of malt - a quantity fully equal to what all the different members of any sober family, men, women, and children, are at an average likely to consume. But in rich and great families, where country hospitality is much practised, the malt liquors consumed by the members of the family make but a small part of the consumption of the house. Either on account of this composition, however, or for other reasons, it is not near so common to malt as to brew for private use. It is difficult to imagine any equitable reason why those who either brew or distil for private use should not be subject to a composition of the same kind.

A greater revenue than what is at present drawn from all the heavy taxes upon malt, beer, and ale might be raised, it has frequently been said, by a much lighter tax upon malt, the opportunities of defrauding the revenue being much greater in a brewery than in a malt-house, and those who brew for private use being exempted from all duties or composition for duties, which is not the case with those who malt for private use.