A tax upon house-rent, payable by the tenant, and proportioned to the whole rent of each house, could not, for any considerable time at least, affect the building-rent. If the builder did not get his reasonable profit, he would be obliged to quit the trade; which, by raising the demand for building, would, in a short time, bring back his profit to its proper level with that of other trades. Neither would such a tax fall altogether upon the ground-rent; but it would divide itself in such a manner, as to fall partly upon the inhabitant of the house, and partly upon the owner of the ground.
Let us suppose, for example, that a particular person judges that he can afford for house-rent all expense of sixty pounds a-year; and let us suppose, too, that a tax of four shillings in the pound, or of one-fifth, payable by the inhabitant, is laid upon house-rent. A house of sixty pounds rent will, in that case, cost him seventy-two pounds a-year, which is twelve pounds more than he thinks he can afford. He will, therefore, content himself with a worse house, or a house of fifty pounds rent, which, with the additional ten pounds that he must pay for the tax, will make up the sum of sixty pounds a-year, the expense which he judges he can afford, and, in order to pay the tax, he will give up a part of the additional conveniency which he might have had from a house of ten pounds a-year more rent. He will give up, I say, a part of this additional conveniency; for he will seldom be obliged to give up the whole, but will, in consequence of the tax, get a better house for fifty pounds a-year, than he could have got if there had been no tax for as a tax of this kind, by taking away this particular competitor, must diminish the competition