Why do we have taxes? The simple answer is that, until someone comes up with a better idea, taxation is the only practical means of raising the revenue to finance government spending on the goods and services that most of us demand. Setting up an efficient and fair tax system is, however, far from simple, particularly for developing countries that want to become integrated in the international economy. The ideal tax system in these countries should raise essential revenue without excessive government borrowing, and should do so without discouraging economic activity and without deviating too much from tax systems in other countries.
Developing countries face formidable challenges when they attempt to establish efficient tax systems. First, most workers in these countries are typically employed in agriculture or in small, informal enterprises. As they are seldom paid a regular, fixed wage, their earnings fluctuate, and many are paid in cash, "off the books." The base for an income tax is therefore hard to calculate. Nor do workers in these countries typically spend their earnings in large stores that keep accurate records of sales and inventories. As a result, modern means of raising revenue, such as income taxes and consumer taxes, play a diminished role in these economies, and the possibility that the government will achieve high tax levels is virtually excluded.
Second, it is difficult to create an efficient tax administration without a well-educated and well-trained staff, when money is lacking to pay good wages to tax officials and to computerize the operation (or even to provide efficient telephone and mail services), and when taxpayers have limited ability to keep accounts. As a result, governments often take the path of least resistance, developing tax systems that allow them to exploit whatever options are available rather than establishing rational, modern, and efficient tax systems.
Third, because of the informal structure of the economy in many developing countries and because of financial limitations, statistical and tax offices have difficulty in generating reliable statistics. This lack of data prevents policymakers from assessing the potential impact of major changes to the tax system. As a result, marginal changes are often preferred over major structural changes, even when the latter are clearly preferable. This perpetuates inefficient tax structures.
Fourth, income tends to be unevenly distributed within developing countries. Although raising high tax revenues in this situation ideally calls for the rich to be taxed more heavily than the poor, the economic and political power of rich taxpayers often allows them to prevent fiscal reforms that would increase their tax burdens. This explains in part why many developing countries have not fully exploited personal income and property taxes and why their tax systems rarely achieve satisfactory progressivity (in other words, where the rich pay proportionately more taxes).
In conclusion, in developing countries, tax policy is often the art of the possible rather than the pursuit of the optimal. It is therefore not surprising that economic theory and especially optimal taxation literature have had relatively little impact on the design of tax systems in these countries. In discussing tax policy issues facing many developing countries today, the authors of this pamphlet consequently draw on extensive practical, first-hand experience with the IMF's provision of tax policy advice to those countries. They consider these issues from both the macroeconomic (the level and composition of tax revenue) and microeconomic (design aspects of specific taxes) perspective.
Tax Policy Challenges Facing Developing Countries
Developing countries attempting to become fully integrated in the world economy will probably need a higher tax level if they are to pursue a government role closer to that of industrial countries, which, on average, enjoy twice the tax revenue. Developing countries will need to reduce sharply their reliance on foreign trade taxes, without at the same time creating economic disincentives, especially in raising more revenue from personal income tax. To meet these challenges, policymakers in these countries will have to get their policy priorities right and have the political will to implement the necessary reforms. Tax administrations must be strengthened to accompany the needed policy changes.
As trade barriers come down and capital becomes more mobile, the formulation of sound tax policy poses significant challenges for developing countries. The need to replace foreign trade taxes with domestic taxes will be accompanied by growing concerns about profit diversion by foreign investors, which weak provisions against tax abuse in the tax laws as well as inadequate technical training of tax auditors in many developing countries are currently unable to deter. A concerted effort to eliminate these deficiencies is therefore of the utmost urgency.
Tax competition is another policy challenge in a world of liberalized capital movement. The effectiveness of tax incentives—in the absence of other necessary fundamentals—is highly questionable. A tax system that is riddled with such incentives will inevitably provide fertile grounds for rent-seeking activities. To allow their emerging markets to take proper root, developing countries would be well advised to refrain from reliance on poorly targeted tax incentives as the main vehicle for investment promotion.
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