Article 1, Section 7, Clause 1
William Blackstone, Commentaries 1:163--641765
First, with regard to taxes: it is the antient indisputable privilege and right of the house of commons, that all grants of subsidies or parliamentary aids do begin in their house, and are first bestowed by them; although their grants are not effectual to all intents and purposes, until they have the assent of the other two branches of the legislature. The general reason, given for this exclusive privilege of the house of commons, is, that the supplies are raised upon the body of the people, and therefore it is proper that they alone should have the right of taxing themselves. This reason would be unanswerable, if the commons taxed none but themselves: but it is notorious, that a very large share of property is in the possession of the house of lords; that this property is equally taxable, and taxed, as the property of the commons; and therefore the commons not being the sole persons taxed, this cannot be the reason of their having the sole right of raising and modelling the supply. The true reason, arising from the spirit of our constitution, seems to be this. The lords being a permanent hereditary body, created at pleasure by the king, are supposed more liable to be influenced by the crown, and when once influenced to continue so, than the commons, who are a temporary elective body, freely nominated by the people. It would therefore be extremely dangerous, to give them any power of framing new taxes for the subject: it is sufficient, that they have a power of rejecting, if they think the commons too lavish or improvident in their grants. But so reasonably jealous are the commons of this valuable privilege, that herein they will not suffer the other house to exert any power but that of rejecting; they will not permit the least alteration or amendment to be made by the lords to the mode of taxing the people by a money bill; under which appellation are included all bills, by which money is directed to be raised upon the subject, for any purpose or in any shape whatsoever; either for the exigencies of government, and collected from the kingdom in general, as the land tax; or for private benefit, and collected in any particular district; as by turnpikes, parish rates, and the like. Yet sir Matthew Hale mentions one case, founded on the practice of parliament in the reign of Henry VI, wherein he thinks the lords may alter a money bill; and that is, if the commons grant a tax, as that of tonnage and poundage, for four years; and the lords alter it to a less time, as for two years; here, he says, the bill need not be sent back to the commons for their concurrence, but may receive the royal assent without farther ceremony; for the alteration of the lords is consistent with the grant of the commons. But such an experiment will hardly be repeated by the lords, under the present improved idea of the privilege of the house of commons: and, in any case where a money bill is remanded to the commons, all amendments in the mode of taxation are sure to be rejected.
The Founders' Constitution
Volume 2, Article 1, Section 7, Clause 1, Document 2
The University of Chicago Press
Blackstone, William. Commentaries on the Laws of England: A Facsimile of the First Edition of 1765--1769. Chicago: University of Chicago Press, 1979.
Easy to print version.