Horizontal Equity As a Principle of Tax Theory
Horizontal Equity as a Principle of Tax Theory David Elkinst I. INTRODUCTION The principle of horizontal equity demands that similarly situated individuals face similar tax burdens.1 It is universally accepted as one of the more significant criteria of a "good tax." It is relied upon in discussions of the tax base, 2 the tax unit,.3 the reporting period, 45 and more.5 Violation of horizontal t Lecturer, School of Law, Netanya College, Israel. Visiting Professor of Law, Southern Methodist University. Ph.D., Bar-Ilan University 1999; LL.M., Bar-Ilan University 1992; LL.B., Hebrew University of Jerusalem 1982. This Article is based upon a doctoral thesis submitted to the University of Bar-Ilan. I wish to thank David Gliksberg of the Hebrew University of Jerusalem Faculty of Law and Daniel Statman of the Haifa University Department of Philosophy for their invaluable comments. Any errors that remain are, of course, my own responsibility. 1. Cf THOMAS HOBBES, LEVIATHAN 238 (Richard Tuck ed., Cambridge Univ. Press 1996) (1651) ("To Equall Justice, appertaineth also the Equall imposition of Taxes."); JOHN STUART MILL, PRINCIPLES OF POLITICAL ECONOMY 155 (Donald Winch ed., Penguin Books 1970) (1848) ("For what reason ought equality to be the rule in matters of taxation? For the reason, that it ought to be so in all affairs of government."); see also HENRY SIDGWICK, THE PRINCIPLES OF POLITICAL ECONOMY 562 (London, MacMillan 1883). However, references to equality made before the twentieth century were generally in the context of what is referred to today as vertical equity, the principles by which the tax burden should be spread out over the entire population.
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