Secondly, such taxes necessarily occasion some obstruction or discouragement to certain branches of industry. As they always raise the price of the commodity taxed, they so far discourage its consumption, and consequently its production. If it is a commodity of home growth or manufacture, less labour comes to be employed in raising and producing it. If it is a foreign commodity of which the tax increases in this manner the price, the commodities of the same kind which are made at home may thereby, indeed, gain some advantage in the home market, and a greater quantity of domestic industry may thereby be turned toward preparing them. But though this rise of price in a foreign commodity, may encourage domestic industry in one particular branch, it necessarily discourages that industry in almost every other. The dearer the Birmingham manufacturer buys his foreign wine, the cheaper he necessarily sells that part of his hardware with which, or, what comes to the same thing, with the price of which, he buys it. That part of his hardware, therefore, becomes of less value to him, and he has less encouragement to work at it. The dearer the consumers in one country pay for the surplus produce of another, the cheaper they necessarily sell that part of their own surplus produce with which, or, what comes to the same thing, with the price of which, they buy it. That part of their own surplus produce becomes of less value to them, and they have less encouragement to increase its quantity. All taxes upon consumable commodities, therefore, tend to reduce the quantity of productive labour below what it otherwise would be, either in preparing the commodities taxed, if they are home commodities, or in preparing those with which they are purchased, if they are foreign commodities. Such taxes, too, always alter, more or less, the natural direction of national industry, and turn it into a channel always different from, and generally less advantageous, than that in which it would have run of its own accord.
Thirdly, the hope of evading such taxes by smuggling, gives frequent occasion to forfeitures and other penalties, which entirely ruin the smuggler; a person who, though no doubt highly blameable for violating the laws of his country, is frequently incapable of violating those of natural justice, and would have been, in every respect, an excellent citizen, had not the laws of his country made that a crime which nature never meant to be so. In those corrupted governments, where there is at least a general suspicion of much unnecessary expense, and great misapplication of the public revenue, the laws which guard it are little respected. Not many people are scrupulous about smuggling, when, without perjury, they can find an easy and safe opportunity of doing so. To pretend to have any scruple about buying smuggled goods, though a manifest encouragement to the violation of the revenue laws, and to the perjury which almost always attends it, would, in most countries, be regarded as one of those pedantic pieces of hypocrisy which, instead of gaining credit with anybody, serve only to expose the person who affects to practise them to the suspicion of being a greater knave than most of his neighbours. By this indulgence of the public, the smuggler is often encouraged to continue a trade, which he is thus taught to consider as in some measure innocent; and when the severity of the revenue laws is ready to fall upon him, he is frequently disposed to defend with violence, what he has been accustomed to regard as his just property. From being at first, perhaps, rather imprudent than criminal, he at last too often becomes one of the hardiest and most determined violators of the laws of society. By the ruin of the smuggler, his capital, which had before been employed in maintaining productive labour, is absorbed either in the revenue of the state, or in that of the revenue officer; and is employed in maintaining unproductive, to the diminution of the general capital of the society, and of the useful industry which it might otherwise have maintained.
Fourthly, such taxes, by subjecting at least the dealers in the taxed commodities, to the frequent visits and odious examination of the tax-gatherers, expose them sometimes, no doubt, to some degree of oppression, and always to much trouble and vexation; and though vexation, as has already been said, is not strictly speaking expense, it is certainly equivalent to the expense at which every man would be willing to redeem himself from it. The laws of excise, though more effectual for the purpose for which they were instituted, are, in this respect, more vexatious than those of the customs. When a merchant has imported goods subject to certain duties of customs; when he has paid those duties, and lodged the goods in his warehouse; he is not, in most cases, liable to any further trouble or vexation from the custom-house officer. It is otherwise with goods subject to duties of excise. The dealers have no respite from the continual visits and examination of the excise officers. The duties of excise are, upon this account, more unpopular than those of the customs; and so are the officers who levy them. Those officers, it is pretended, though in general, perhaps, they do their duty fully as well as those of the customs; yet, as that duty obliges them to be frequently very troublesome to some of their neighbours, commonly contract a certain hardness of character, which the others frequently have not. This observation, however, may very probably be the mere suggestion of fraudulent dealers, whose smuggling is either prevented or detected by their diligence.
The inconveniencies, however, which are, perhaps, in some degree inseparable from taxes upon consumable communities, fall as light upon the people of Great Britain as upon those of any other country of which the government is nearly as expensive. Our state is not perfect, and might be mended; but it is as good, or better, than that of most of our neighbours.
In consequence of the notion, that duties upon consumable goods were taxes upon the profits of merchants, those duties have, in some countries, been repeated upon every successive sale of the goods. If the profits of the merchant-importer or merchant-manufacturer were taxed, equality seemed to require that those of all the middle buyers, who intervened between either of them and the consumer, should likewise be taxed. The famous alcavala of Spain seems to have been established upon this principle. It was at first a tax of ten per cent. afterwards of fourteen per cent. and it is at present only six per cent. upon the sale of every sort of property whether moveable or immoveable; and it is repeated every time the property is sold. {Memoires concernant les Droits, etc. tom. i, p. 15} The levying of this tax requires a multitude of revenue officers, sufficient to guard the transportation of goods, not only from one province to another, but from one shop to another. It subjects, not only the dealers in some sorts of goods, but those in all sorts, every farmer, every manufacturer, every merchant and shopkeeper, to the continual visit and examination of the tax-gatherers. Through the greater part of the country in which a tax of this kind is established, nothing can be produced for distant sale. The produce of every part of the country must be proportioned to the consumption of the neighbourhood. It is to the alcavala, accordingly, that Ustaritz imputes the ruin of the manufactures of Spain. He might have imputed to it, likewise, the declension of agriculture, it being imposed not only upon manufactures, but upon the rude produce of the land.
In the kingdom of Naples, there is a similar tax of three per cent. upon the value of all contracts, and consequently upon that of all contracts of sale. It is both lighter than the Spanish tax, and the greater part of towns and parishes are allowed to pay a composition in lieu of it. They levy this composition in what manner they please, generally in a way that gives no interruption to the interior commerce of the place. The Neapolitan tax, therefore, is not near so ruinous as the Spanish one.
The uniform system of taxation, which, with a few exception of no great consequence, takes place in all the different parts of the united kingdom of Great Britain, leaves the interior commerce of the country, the inland and coasting trade, almost entirely free. The inland trade is almost perfectly free; and the greater part of goods may be carried from one end of the kingdom to the other, without requiring any permit or let-pass, without being subject to question, visit or examination, from the revenue officers. There are a few exceptions, but they are such as can give no interruption to any important branch of inland commerce of the country. Goods carried coastwise, indeed, require certificates or coast-cockets. If you except coals, however, the rest are almost all duty-free. This freedom of interior commerce, the effect of the uniformity of the system of taxation, is perhaps one of the principal causes of the prosperity of Great Britain; every great country being necessarily the best and most extensive market for the greater part of the productions of its own industry. If the same freedom in consequence of the same uniformity, could be extended to Ireland and the plantations, both the grandeur of the state, and the prosperity of every part of the empire, would probably be still greater than at present.