Shifting the tax burden from labor to consumption is proposed in many developed
INTRODUCTIONIndirect taxation forms part of a mix of different tax and revenue-raising instruments including taxes on income, property, and social security levies on employment income that households and other economic agents face. As Table 1 illustrates for the OECD, indirect or consumption taxation is a substantial component in the tax system of most industrialized countries. Despite a decline in relative importance mainly taking place during the '70s, the total share of government revenue raised via consumption seems to have stabilized at around 30 percent, 1 which still is substantially more than, for instance, the income tax. Note that this stabilization since 1980 hides two distinct evolutions partly offsetting one another: the implosion of taxes on special goods and services (excise taxes 2 ) from 1960 onward and the rise of taxes on general consumption (mainly VAT and sales taxes) in the same period. Lacking an adequate political economy model of tax system formation, it is difficult to give a conclusive interpretation of these opposite evolutions. Theoretically there are (productive efficiency) arguments contra and (externality) We only consider relative trends in this paper. In absolute terms there is evidence of a correlation between the share of tax raised by VAT and the overall tax burden in a country (Keen & Lockwood, 2006). 2 It should be noted that import duties also belong to this category, suggesting that the promotion of free trade might be responsible for the decreasing influence of this revenue type. Detailed figures, such as in OECD (2008a), show nevertheless that (1) the share of import duties is too small to provoke an effect of this magnitude and that (2) for the more restricted category of excise duties without import duties the evolution is analogous.