M. Say says that M. Turgot, by reducing the market dues on fish (_les droits d'entrée et de halle sur la marée_) in Paris one half, did not diminish the amount of their produce, and that consequently, the consumption of fish must have doubled. He infers from this, that the profits of the fisherman and those engaged in the trade, must also have doubled, and that the income of the country must have increased, by the whole amount of these increased profits; and by giving a stimulus to accumulation, must have increased the resources of the state.[18]
Without calling in question the policy, which dictated this alteration of the tax, I may be permitted to doubt whether it gave any great stimulus to accumulation. If the profits of the fisherman and others engaged in the trade, were doubled in consequence of more fish being consumed, capital and labour must have been withdrawn from other occupations to engage them in this particular trade. But in those occupations capital and labour were productive of profits, which must have been given up when they were withdrawn. The ability of the country to accumulate was only increased by the difference between the profits obtained in the business in which the capital was newly engaged, and those obtained in that from which it was withdrawn.
Whether taxes be taken from revenue or capital, they diminish the taxable commodities of the state. If I cease to expend 100_l._ on wine, because by paying a tax of that amount I have enabled Government to expend 100_l._ instead of expending it myself, one hundred pounds worth of goods are necessarily withdrawn from the list of taxable commodities. If the revenue of the individuals of a country be 10 millions, they will have at least 10 millions worth of taxable commodities. If by taxing some, one million be transferred to the disposal of Government, their revenue will still be nominally 10 millions, but they will remain with only nine millions worth of taxable commodities. There are no circumstances under which taxation does not abridge the enjoyments of those on whom the taxes ultimately fall, and no means by which those enjoyments can again be extended, but the accumulation of new revenue.
Taxation can never be so equally applied, as to operate in the same proportion on the value of all commodities, and still to preserve them at the same relative value. It frequently operates very differently from the intention of the legislature, by its indirect effects. We have already seen, that the effect of a direct tax on corn and raw produce, is, if money be also produced in the country, to raise the price of all commodities, in proportion as raw produce enters into their composition, and thereby to destroy the natural relation which previously existed between them. Another indirect effect is, that it raises wages, and lowers the rate of profits; and we have also seen, in another part of this work, that the effect of a rise of wages, and a fall of profits, is to lower the money prices of those commodities which are produced in a greater degree by the employment of fixed capital.