Abstract

Audit is often the weakest component of VAT administration. As noted in Chapter 6, among the surveyed countries, audit performance is reported to be a particularly weak aspect of tax administration, irrespective of whether other aspects of the VAT are working well. This chapter discusses the importance of the audit function and the difficulties faced in implementing audit programs.

Audit is often the weakest component of VAT administration. As noted in Chapter 6, among the surveyed countries, audit performance is reported to be a particularly weak aspect of tax administration, irrespective of whether other aspects of the VAT are working well. This chapter discusses the importance of the audit function and the difficulties faced in implementing audit programs.

Background

Basic guidelines provided for the development of an audit program typically address the following key issues:

  • Coverage—what percentage of taxpayers should be audited?

  • Selection—how should the audit cases be identified?

  • Methods—what type of audit should be performed, what should be the duration of an audit, and what approach should be taken by the auditors?

  • Staffing and training—what are the staff resources needed to implement the audit program and what type of training should be provided?

  • Monitoring—what are the management systems needed to monitor the audit program (including assigning targets, developing time-standards, performing quality review, and ensuring prompt collection of additional assessments)?

Detection of offenses, such as underreporting of turnover, over-reporting of VAT credits, and use of fake invoices, requires field audits by well-trained officers, rather than desk verifications. The experience of countries with successful audit programs also shows that a VAT audit plan should be primarily based on short, issue-oriented audits covering a limited tax period (no more than one or two return periods). This plan should provide for a broad coverage of taxpayers (taking into account their classification by size and industries). Most tax administration experts agree that, by international standards, an effective VAT audit program should provide for a 25–30 percent coverage of taxpayers each year.

In addition, VAT audits need to be closely coordinated with audits of other tax liabilities (especially income tax). When significant underreporting is detected during a VAT audit, the case should be transmitted to a joint-audit division specialized in comprehensive audits. In most countries where VAT and income tax administrations are integrated (or have been able to develop close cooperation), the development of an effective VAT audit program significantly helps improve income tax compliance. Such methods have also proved to be more effective and more compatible with business requirements (for instance, in limiting the number of visits to taxpayers’ premises and restricting in-depth audits to cases where significant underreporting is detected). Box 14.1 presents a typical example of an audit program recommended by FAD.

Information on audit performance was provided in only 21 of the 37 surveyed countries. Only 2 of those were seen as having sufficient audit coverage, while only 11 had implemented the recommended audit methods. As the lack of an effective audit program undermines the functioning of the entire VAT operations, beginning with the refund system (see Chapter 15), it is worrisome to find that most of the surveyed countries still need to make significant effort to develop appropriate audit programs.

More generally, in recent years, the need to strengthen VAT audit programs has been an ongoing concern of a number of countries, including industrial countries. For example, in 1993, the implementation of a new VAT taxation system for transactions between EU countries135 necessitated the development of several programs to reduce the risks of fraud. Since then, however, despite these programs, the EU Commission and most EU countries are increasingly concerned by the development of sophisticated types of VAT fraud. Most recognize that considerable efforts have still to be made to limit these risks and continue to improve their VAT compliance—including their audit programs.

Why and How Is Audit Critical?

Why Is An Effective Audit Program Critical for VAT Operations?

Like other taxes, VAT can be evaded. The development of effective audit programs is crucial to increase the risk of being detected and punish those businesses not in compliance with their VAT obligations. Typically, the most common sources of VAT evasion are similar to those of traditional sales taxes—as discussed in Chapter 5—including non-registration of businesses, underreporting of gross receipts, abuse of multiple rates, and nonremittance to the tax authorities of the tax that has been paid to the taxpayer by its customers. However, fraud under a VAT may sometimes be more sophisticated than fraud under other indirect taxes. VAT-specific fraud includes the use of fake invoices to abuse the credit system, the misreporting of domestic sales as exports to benefit from zero-rating, and the claim of VAT credits for noncreditable purchases. Unless these types of fraud are dealt with appropriately the entire VAT system can be corrupted, particularly when the credit mechanism and the refund system are abused.

The most obvious consequences of ineffective audits are the deterioration of VAT compliance and a loss of credibility of the tax administration. Even if sufficient penalties are provided for in the law, taxpayers will not be deterred from minimizing their tax liabilities if they believe that there is little chance of being audited. At some stage, honest businesses will realize that they cannot compete with those who consistently evade the VAT and may decide, in turn, to underreport their own tax liabilities.

The survey indicates that most of the countries lacking an effective audit program are also those where VAT procedures and systems are more complex. In a number of cases, tax authorities appear convinced that the lack of effective audits can be offset through increased filing requirements.

Some countries have been attracted by the theoretical possibility of crosschecking all purchases and sales invoices to promote compliance. Cases include South Korea, China, Côte d’Ivoire, Indonesia, and Bulgaria, where taxpayers are requested to attach a copy (or a list) of their purchase invoices to their monthly returns. This approach has often reflected a concern that the refund system is being abused. In several countries, requirements to audit 100 percent of the claims prior to refunding VAT excess credits complicate matters; not only does this policy delay the processing of refunds, it also implies that most audit resources are assigned to the verification of refund cases. Since not all refunds can be audited in a timely fashion, a database of all purchase and sales invoices is seen as facilitating the verification of refund claims. The South Korean experience (described in Box 14.2) indicates that massive cross-checking of invoices is costly to administer, burdensome for taxpayers, and ultimately not effective in controlling evasion. While information technology has improved spectacularly since then, the sheer volume of transactions continues to make massive cross-checking a daunting task. Moreover, it runs the risk of alienating taxpayers.

Elements of an Effective Audit Program

In a function-based tax service, the audit program typically includes the following types of audits:

  • Desk verifications. Made annually, these verifications are primarily based on (i) a review of income tax and VAT returns (including a review of basic ratios such as profit margin, cash flow, cost of personnel, and a comparison with ratios for previous periods and ratios for other taxpayers in similar industries), and (ii) the cross-checking of information included in the taxpayer files (particularly income tax, VAT, and customs information).

  • Registration checks. These take the form of unannounced visits to a taxpayer’s premises (mainly for new small and medium-sized taxpayers) during which the tax officer ensures that: (i) the taxpayer has a basic understanding of his/her obligations; (ii) appropriate records are being kept; and (iii) proper invoices are being issued.

  • VAT refund audits. A pre-refund audit should be undertaken for a first refund claim (particularly by new enterprises); audits of further claims should be carried out selectively. Refund audits should focus only on the period covered by the claim.

  • Issue-oriented audits. These should be directed at verifying items for which errors have been detected in the returns. Regarding the VAT, an issue-oriented audit should focus on no more than one to two returns.

  • Comprehensive audits. All cases where serious underreporting has been detected during a desk verification, a registration check, a VAT refund audit, or an issue-oriented audit should be forwarded to a unit responsible for undertaking comprehensive audits of all tax liabilities (including VAT and income tax). These comprehensive audits may be extended to cover several years, up to the limit provided for in the law.

  • Tax fraud investigations. In the most serious fraud cases, criminal investigations may be necessary. Such investigations may require searches (of business premises and, sometimes, domiciles), seizure of evidence, testimony from key witnesses, etc. They should be undertaken in accordance with criminal procedure laws.

Massive Cross-Checking of Invoices—Experience of South Korea

In 1977, South Korea implemented an ambitious cross-checking program in conjunction with the introduction of a VAT. Each taxpayer was required to complete four tax invoices for every sale of goods and services: one copy for the supplier; a second copy to be sent by the supplier to the district tax office; the third copy for the purchaser; and the fourth copy to be sent by the purchaser to the district tax office. The two tax offices, in turn, sent their copies to a centralized computer center for cross-checking.

This program was subsequently modified in an effort to reduce administrative costs. Sales invoices were no longer required. Instead, taxpayers were only required to submit a summary of purchase invoices above a certain amount. These summaries were processed at the computer center and aggregated by seller. This aggregate was then compared to the volume of sales reported on the VAT return. Any discrepancies identified by the computer center were forwarded to district offices for follow-up.

These programs produced mixed results. There is some evidence that taxpayer compliance initially improved following the introduction of the cross-checking programs. During the period 1977 to 1982, the number of cases where there was a sales invoice but not a purchase invoice (or vice versa) dropped slightly. However, South Korea’s tax administration found the programs to be costly and difficult to administer. These costs were in the form of the increased staff and computer resources required to input and process the invoices, resources that were unavailable for other, potentially more productive, enforcement activities. The programs also imposed significant compliance costs on taxpayers. Finally, the programs were beset by inefficiencies as many of the discrepancies between the sales and purchase invoices that were detected by the computer system were found, upon closer inspection, to result from transcription errors and other innocuous mistakes.

The following examples illustrate the difficulty in implementing an effective VAT in the absence of effective audit programs. In one of the countries in the survey, the difficulty of processing exporters’ refund claims within the legal time frame resulted in serious cash-flow problems for a number of exporters. In 1998, to address these problems, the government introduced VAT exemptions for exporters’ imports and modified the normal VAT mechanism for their domestic purchases, by extending zero-rating of the VAT to the transactions of exporters’ suppliers (“indirect exporters”) up to the production stage. As discussed in the next chapter, this approach compromises the fundamental nature of the VAT and increases risks of fraud and abuse of the zero-rate system.

What Are the Main Reasons for the Lack of an Effective Audit Program?

There are several reasons for ineffective audit programs that are evident in varying degrees in several countries. First, audit typically requires higher-level skills than those needed for most other tax administration tasks, and such skills are sometimes in short supply. Second, the possibility of collusion between taxpayers and tax officials is significant during an audit.136 Moreover, auditor errors may damage business activity. As a result, governments may, sometimes, be reluctant to support comprehensive audit programs.

However, while these general reasons cannot be ignored, the survey data point to more specific factors that also contribute to the lack of effective audit programs, including:

Inadequate preparations for VAT implementation

The consequences of a weak audit program may not be immediately perceptible. While the lack of effective collection enforcement systems, especially those needed to deal promptly with nonfilers and nonpayers, has an immediate impact on revenue, the lack of effective audits to detect underreporting of gross receipts and/or overreporting of credits may affect tax compliance only in the medium term. There have been cases in which insufficient attention has been paid to the development of an audit function when the VAT was implemented. For example, in two of the countries surveyed, although resident advisors were made available to support VAT preparations, which included the development of an audit program and the training of auditors, the audit units were not staffed until several months after the introduction of the VAT.

Weak political commitment

The absence of clear political support is another common reason for the lack of an effective audit program. In one of the surveyed countries, for instance, the most common form of evasion has been the underreporting of domestic sales, with traders, especially the largest, claiming more imports and purchases than taxable sales. This problem was not appropriately addressed at the outset; in fact, the authorities dismissed the head of the tax administration who wanted to address noncompliance issues immediately. As the implementation of an audit program was deferred for more than two years after the introduction of the VAT, there is still significant underreporting of VAT liabilities in that country. Similar problems were encountered in other countries; for example, in one case, traders were assured that there would be no exchanges of information between the VAT and income tax administrations after the VAT is introduced.

Inappropriate legal and judicial environment

In several cases, the lack of an appropriate legal and judicial environment has also militated against an effective audit function. A clear legal framework ensures that taxpayers’ rights are protected and that the tax administration has sufficient and clearly defined legal powers to visit taxpayers’ premises and examine their records.137 It also ensures that appropriate action will be taken by the administration, and, as needed, by the judiciary, to collect outstanding taxes and penalties. Moreover, practice may significantly diverge from the legal and judiciary framework provided for in the law. For example, in several developing countries there are few, if any, possibilities for taxpayers to go to court to appeal the decision of the tax authorities. Conversely, in other countries the appeal process is so complex that taxpayers often take advantage of the system to delay the payment of their outstanding tax liabilities for a number of years.

Other technical issues

There are several additional technical issues that contribute to the lack of an effective audit strategy in the surveyed countries, including the following:

  • Misallocation of resources. Ill-designed procedures and complex forms result in the allocation of the majority of staff resources to paperwork.

  • Lack of audit selection and monitoring systems. Several tax administrations have yet to develop basic audit systems. Weaknesses include: (i) the lack of a system for the selection of audit cases;138 (ii) absence of audit targets and lax time completion standards for audits; (iii) rudimentary techniques (such as, in certain countries, checking 100 percent of invoices); and (iv) flawed management reporting systems. In some countries, there is no appropriate audit organization, with tax auditing responsibilities being split between different administrations (including tax police forces in several transition countries).

  • The absence of an effective training program. This is an area in which the assistance provided by bilateral donors could be improved.

Conclusions

Although various technical and political reasons may contribute to poor audit performance in most of the surveyed countries, the difficulty faced in convincing countries’ tax authorities to adopt effective audit suggests several areas where reorientation of advice would be appropriate. For example:

Impact of the legal and judicial environment

It is important that the tax administration apply tax laws and regulations consistently—including through the publication of information regarding interpretation of the laws and regulations—and that objections and appeals are resolved through administrative channels as much as possible. To ensure that taxpayers are treated fairly, recent FAD advice has also recommended establishing the position of an ombudsman responsible for handling taxpayers’ complaints regarding the quality of services provided by the tax administration.

However, the overall weakness of the legal and judicial environment, which impedes the development of effective appeals procedures in many developing countries and transition economies, is an issue that requires significant effort, including technical assistance.

Elimination of massive cross-checking programs

Those cases where countries attempt to cross-check on a large scale are often particularly challenging when it comes to giving advice concerning effective refund processing and audit programs. In several cases mentioned above, FAD has not been successful in convincing tax authorities that 100 percent pre-refund audits or/and massive invoice cross-checking is unworkable. Additional efforts are needed to promote more modern audit strategies developed in successful tax administrations,139 which would need require extending technical assistance in tax administration beyond short-term implementation issues.

Attention paid to the need for effective audit programs

Since revenue issues are often a major source of concern at the outset, priority is often given to measures aimed at bolstering VAT revenue immediately, such as establishing a large taxpayer unit, developing new filing and payment procedures, and implementing collection enforcement systems.

As governments and tax administrations often begin to be interested in audit and refund issues only several months or, sometimes, several years after the introduction of the VAT, it is mainly at that time that assistance to implement refund and audit programs will be most effective. This may explain why a number of countries with established VATs have subsequently requested further assistance from the IMF in these specific areas. Experience with these countries shows that, as soon as refund and audit issues are recognized as major problems, advice may be more successful (even if they cannot have a revenue impact immediately).

An important lesson from these experiences is that a period of more than the 18–24 months of the standard VAT implementation schedule is eventually required to implement a VAT successfully. Indeed, the effective implementation of a VAT may take several years.

  • Ab Iorwerth, Aled, and John Whalley, 1998, “Meals on Wheels: Restaurant and Home Meal Production and the Exemption of Food from Sales and Value-Added Taxes,” NBER Working Paper 6653 (Cambridge, Massachusetts: National Bureau of Economic Research).

    • Search Google Scholar
    • Export Citation
  • Adams, Thomas S., 1921, “Fundamental Problems of Federal Income Taxation,” Quarterly Journal of Economics, Vol. 35 (No. 4), pp. 52756.

    • Search Google Scholar
    • Export Citation
  • Agha, Ali, and Jonathan Haughton, 1996, “Designing VAT Systems: Some Efficiency Considerations,” Review of Economics and Statistics, Vol. 78, pp. 30308.

    • Search Google Scholar
    • Export Citation
  • Alesina, Alberto, and Romain Wacziarg, 1998, “Openness, Country Size, and Government,” Journal of Public Economics, Vol. 69, pp. 30521.

    • Search Google Scholar
    • Export Citation
  • Atkinson, Anthony B., and Joseph E. Stiglitz, 1976, “The Design of Tax Structure: Direct Versus Indirect Taxation,” Journal of Public Economics, Vol. 6, pp. 5575.

    • Search Google Scholar
    • Export Citation
  • Atkinson, Anthony B., and Joseph E. Stiglitz, 1980, Lectures on Public Economics (London and New York: McGraw-Hill).

  • Auerbach, Alan, and L.J. Kotlikoff, 1987, Dynamic Fiscal Policy (Cambridge, U.K., and New York: Cambridge University Press).

  • Aujean, M., Peter Jenkins, and Satya Poddar, 1999, “A New Approach to Public Sector Bodies,” International VAT Monitor, Vol. 10 (No. 4), pp. 14449.

    • Search Google Scholar
    • Export Citation
  • Baer, Katherine, Victoria Summers, and Emil Sunley, 1996, “A Destination VAT for CIS Trade,” MOCT-MOST: Economic Policy in Transitional Economies, Vol. 6, pp. 87106.

    • Search Google Scholar
    • Export Citation
  • Ballard, Charles L., and John B. Shoven, 1987, “The Value-Added Tax: The Efficiency Cost of Achieving Progressivity by Using Exemptions,” in Modern Developments in Public Finance: Essays In Honor of Arnold Harberger, ed. by M. Boskin (New York and London: Blackwell).

    • Search Google Scholar
    • Export Citation
  • Besley, Timothy, and Ian Jewitt, 1995, “Uniform Taxation and Consumer Preferences,” Journal of Public Economics, Vol. 58, pp. 7384.

    • Search Google Scholar
    • Export Citation
  • Bird, Richard, M., 1993, “Review of ‘Principles and Practice of Value Added Taxation: Lessons for Developing Countries,’” Canadian Tax Journal, Vol. 41 (No. 6), pp. 122225.

    • Search Google Scholar
    • Export Citation
  • Bird, Richard, M., 1995, “Indirect Taxes in Belarus: VAT by Subtraction,” Tax Notes International, Vol. 10, pp. 58999.

  • Bird, Richard, M., 1999, “Rethinking Tax Assignment: The Need for Better Subnational Taxes” (unpublished; Toronto: University of Toronto).

    • Search Google Scholar
    • Export Citation
  • Bird, Richard, M., and Pierre Pascal Gendron, 1998, “Dual VATs and Cross-Border Trade: Two Problems, One Solution?” International Tax and Public Finance, Vol. 5, pp. 42942.

    • Search Google Scholar
    • Export Citation
  • Bird, Richard, M., and Pierre Pascal Gendron, 2000, “CVAT, VIVAT, and Dual VAT: Vertical ‘Sharing’ and Interstate Trade,” International Tax and Public Finance, Vol. 7 (No. 6), pp. 75361.

    • Search Google Scholar
    • Export Citation
  • Bird, Richard M., and Jack Mintz, 1999, “Tax Assignment in Canada: A Modest Proposal” (unpublished; Toronto: University of Toronto).

    • Search Google Scholar
    • Export Citation
  • Boadway, Robin, and Michael Keen, 2000, “Redistribution,” in Handbook of Income Distribution, ed. by A.B. Atkinson and F. Bourguignon (Amsterdam: North-Holland), pp. 677789.

    • Search Google Scholar
    • Export Citation
  • Bogetić, Zeljko, and Fareed M.A. Hassan, 1993, “Determinants of Value-Added Tax Revenue: A Cross-Section Analysis,” World Bank Policy Research Discussion Paper WPS 1203 (Washington: World Bank).

    • Search Google Scholar
    • Export Citation
  • Bogetić, Zeljko, and Fareed M.A. Hassan, 1995, “Explaining the Revenue Potential of VAT,” Tax Notes International, Vol. 10, pp. 104346.

    • Search Google Scholar
    • Export Citation
  • Bovenberg, A. Lans, 1987, “Indirect Taxation in Developing Countries: A General Equilibrium Approach” Staff Papers, International Monetary Fund, Vol. 34, pp. 33373.

    • Search Google Scholar
    • Export Citation
  • Bovenberg, A. Lans, 1994, “Destination- and Origin-based Taxation Under International Capital Mobility,” International Tax and Public Finance, Vol. 1, pp. 24773.

    • Search Google Scholar
    • Export Citation
  • Brealey, Mark, and C. Quigley, eds., 1992, Completing the Internal Market of the European Community (Luxembourg: Office for Official Publications of the European Communities).

    • Search Google Scholar
    • Export Citation
  • Cecchini, P., with M. Catinat and A. Jacquemin, 1988, The European Challenge, 1992: The Benefits of a Single Market (Brookfield, Vermont: Wildwood House).

    • Search Google Scholar
    • Export Citation
  • Cnossen, Sijbren, 1987, “VAT and RST: A Comparison,” Canadian Tax Journal, Vol. 35 (No. 3), pp. 559615.

  • Cnossen, Sijbren, 1991, “Design of the Value-Added Tax: Lessons from Experience,” in Tax Policy in Developing Countries, d. by J. Khalilzadeh-Shirazi and Anwar Shah (Washington: World Bank), pp. 7285.

    • Search Google Scholar
    • Export Citation
  • Cnossen, Sijbren, 1993, “Issues in Adopting and Designing a Value-Added Tax,” in Key Issues in Tax Reform, ed. by C. Sandford (Bath, U.K.: Fiscal Publications), pp. 73107.

    • Search Google Scholar
    • Export Citation
  • Cnossen, Sijbren, 1994, “Administrative and Compliance Costs of the VAT: A Review of the Evidence,” Tax Notes, Vol. 63, pp. 160926.

    • Search Google Scholar
    • Export Citation
  • Cnossen, Sijbren, 1995, “VAT Treatment of Immovable Property,” Tax Notes International, Vol. 10, pp. 103742.

  • Cnossen, Sijbren, 1998, “Global Trends and Issues in Value-Added Taxation,” International Tax and Public Finance, Vol. 5, pp. 399428.

    • Search Google Scholar
    • Export Citation
  • Cnossen, Sijbren, and Carl S. Shoup, 1987, “Coordination of Value-Added Taxes,” in Tax Coordination in the European Community, ed. by Sijbren Cnossen (Deventer, Netherlands: Kluwer Law and Taxation), pp. 5984.

    • Search Google Scholar
    • Export Citation
  • Cockfield, Roger, 1997, “A VAT Suspension Regime,” International VAT Monitor, Vol. 8 (No. 3), pp. 11119.

  • Conrad, Robert F., 1990, “Real estate and the VAT” in Value Added Taxation in Developing Countries, ed. by Malcolm Gillis, Carl S. Shoup, and Gerardo Sicat (Washington: World Bank), pp. 95103.

    • Search Google Scholar
    • Export Citation
  • Das-Gupta, Arindam, and Ira N. Gang, 1996, “A Comparison of Sales Taxes,” Public Finance, Vol. 51, pp. 21725.

  • De Wit, Guido, 1995, “The European VAT Experience,” Tax Notes International, Vol. 10, 4954.

  • Deaton, Angus, and Nicholas H. Stern, 1986, “Optimally Uniform Commodity Taxes, Taste Difference, and Lump-Sum Grants,” Economics Letters, Vol. 20 (No. 3), pp. 26366.

    • Search Google Scholar
    • Export Citation
  • Diamond, Peter, and James Mirrlees, 1971, “Optimal Taxation and Public Production I: Production Efficiency,” American Economic Review, Vol. 61 (No. 1), pp. 827.

    • Search Google Scholar
    • Export Citation
  • Due, John F., 1957, Sales Taxation (Urbana, Illinois: University of Illinois Press).

  • Due, John F., 1990, “VAT Treatment of Farmers and Small Firms,” in Value-Added Taxation in Developing Countries, ed. by M. Gillis, C. C. Shoup, and G. Sicat (Washington: World Bank), pp. 5869.

    • Search Google Scholar
    • Export Citation
  • Edwards, Jeremy S.S., Michael J. Keen, and Matti Tuomala, 1994, “Income Tax, Commodity Taxes, and Public Good Provision: A Brief Guide,” Finanzarchiv, Vol. 51 (No. 4), pp. 47287.

    • Search Google Scholar
    • Export Citation
  • European Commission, 1985, Completing the Internal Market (Luxembourg: Office for Official Publications of the European Communities).

  • European Commission, 1996, A Common System of VAT: A Programme for the Single Market, COM 328(96), Final (Brussels).

  • European Commission, 1998, “Proposal for a Council Directive Amending Directive 77/388/EEC as Regards the Rules Governing the Right to Deduct Value-Added Tax,” COM (98) 377, Final (Brussels).

    • Search Google Scholar
    • Export Citation
  • European Commission, 1999, “Indirect Taxes and e-commerce,” Working Paper, DGXII (Brussels).

  • European Commission, undated, Value-Added Tax: A Study of the Methods of Taxing Financial Institutions (Brussels).

  • Fitzgerald, J.D., T. Quinn, B. Whelan, and J. Williams, 1988, An Analysis of Cross-Border Shopping, Paper 137 (Dublin: Economic and Social Research Institute).

    • Search Google Scholar
    • Export Citation
  • Fratianni, Michele, and Herbert Christie, 1981, “Abolishing Fiscal Frontiers Within the EEC,” Public Finance, Vol. 36, pp. 41129.

    • Search Google Scholar
    • Export Citation
  • Gale, William G., and Janet Holtzblatt, 2000, “The Role of Administrative Issues in Tax Reform: Simplicity, Compliance, and Administration,” forthcoming in George R. Zodrow and Peter Mieszkowski, eds., United States Tax Reform in the Twenty-First Century (Cambridge: Cambridge University Press).

    • Search Google Scholar
    • Export Citation
  • Genser, Bernd, 1996, “A Generalized Equivalence Property of Mixed International VAT Regimes,” Scandinavian Journal of Economics, Vol. 98, pp. 25362.

    • Search Google Scholar
    • Export Citation
  • Genser, Bernd, and Günter Schultze, 1997, “Transfer Pricing Under an Origin-Based VAT System,” Finanzarchiv, Vol. 54, pp. 5167.

  • Ghura, Dhaneshwar, 1998, “Determinants of Tax Revenue in Sub-Saharan Africa” (unpublished; Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Gillis, Malcolm, Carl S. Shoup, and Gerardo Sicat, 1990, Value-Added Taxation in Developing Countries (Washington: World Bank).

  • Godwin, Michael, 1998, “The VAT Registration Threshold,” British Tax Review, No. 6, pp. 54145.

  • Gottfried, Peter, and Wolfgang Wiegard, 1991, “Exemption Versus Zero Rating: A Hidden Problem of VAT,” Journal of Public Economics, Vol. 46, pp. 30728.

    • Search Google Scholar
    • Export Citation
  • Guerard, Michèle, 1973, “The Brazilian State Value-Added Tax,” Staff Papers, International Monetary Fund, Vol. 20, pp. 11869.

  • Hall, Robert E., and Alvin Rabushka, 1995, The Flat Tax (California: Hoover Institution Press, 2nd ed.).

  • Hemming, Richard, and John A. Kay, 1981, “The United Kingdom,” in The Value-Added Tax: Lessons from Europe, ed. by Henry J. Aaron (Washington: Brookings Institution), pp. 7589.

    • Search Google Scholar
    • Export Citation
  • Hossain, Shahabuddin M., 1995, “The Equity Impact of the Value-Added Tax in Bangladesh,” Staff Papers, International Monetary Fund, Vol. 42, pp. 41130.

    • Search Google Scholar
    • Export Citation
  • Jenkins, Glenn P., and Rup Khadka, 1997, “Value-Added Tax Policy and Implementation in Singapore,” International VAT Monitor, Vol. 9, pp. 3547.

    • Search Google Scholar
    • Export Citation
  • Kay, John A., 1980, “The Deadweight Loss from a Tax System,” Journal of Public Economics, Vol. 13, pp. 11119.

  • Kay, John A., and Evan Davis, 1985, “Extending the VAT Base: Problems and Possibilities,” Fiscal Studies, Vol. 6 (No. 1), pp. 116.

    • Search Google Scholar
    • Export Citation
  • Kay, John A., and Evan Davis, 1990, “The VAT and Services,” in Value Added Taxation in Developing Countries, ed. by Malcolm Gillis, Carl S. Shoup, and Gerardo C. Sicat (Washington: The World Bank), pp. 7081.

    • Search Google Scholar
    • Export Citation
  • Kay, John A., and Neil Warren, 1980, “Effective Rates of Value-Added Tax,” Working Paper 16 (London: Institute for Fiscal Studies).

  • Keen, Michael, 2000, “CVAT, VIVAT, and All That: New Forms of VAT for Federal Systems,” Canadian Tax Journal, Vol. 48 (No.2), pp. 40924.

    • Search Google Scholar
    • Export Citation
  • Keen, Michael, and Sajal Lahiri, 1998, “The Comparison Between Destination and Origin Principles Under Imperfect Competition,” Journal of International Economics, Vol. 45 (No. 2), pp. 32350.

    • Search Google Scholar
    • Export Citation
  • Keen, Michael, and Jenny Ligthart, 1999, “Coordinating Tariff Reduction and Domestic Tax Reform,” IMF Working Paper 99/93 (Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Keen, Michael, and Jack Mintz, 1998, “The Optimal Threshold for a Value-Added Tax” forthcoming in the Journal of Public Economics.

  • Keen, Michael, and Stephen Smith, 1996, The Future of Value Added Tax in the European Union,” Economic Policy (October 23), pp. 375411 and 41920.

    • Search Google Scholar
    • Export Citation
  • Keen, Michael, and Stephen Smith, 2000, “Viva VIVAT!”, International Tax and Public Finance, Vol. 7, (No. 6), pp. 74151.

  • Keen, Michael, and David Wildasin, 2000, “Pareto Efficiency in International Taxation” (unpublished; Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Kenyon, Daphne A., 1996, “A New State VAT? Lessons from New Hampshire,” National Tax Journal, Vol. 49, pp. 38199.

  • Kortenaar, G., and Chr. Spanjersberg, 1999, “Taxation and e-Commerce: Dutch Tax Policy Implications,” Intertax, Vol. 27, pp. 18087.

    • Search Google Scholar
    • Export Citation
  • Kotlikoff, Laurence J., and Lawrence H. Summers, 1985, “Tax Incidence,” in Handbook of Public Economics, ed. by M.S. Feldstein and A. Auerbach (Amsterdam: North-Holland), pp. 104392.

    • Search Google Scholar
    • Export Citation
  • Lahiri, S., and Y. Ono, 1988, “Helping Minor Firms Reduce Welfare,” Economic Journal, Vol. 98, pp. 11991202.

  • Lauré, Maurice, 1953, La Taxe à la Valeur Ajoutée (Paris: Librairie du Receuil Sirey, 2nd ed.).

  • Lauré, Maurice, 1957, Au Secours de la TVA (Paris, Presses Universitaires de France).

  • Lee, Catherine, Mark Pearson, and Stephen Smith, 1988, Fiscal Harmonization: An Analysis of the Commission’s Proposals, IFS Report Series, No. 28 (London: Institute for Fiscal Studies).

    • Search Google Scholar
    • Export Citation
  • Lent, George E., Milka Casanegra, and Michèle Guerard, 1973, “The Value-Added Tax in Developing Countries,” Staff Papers, International Monetary Fund, Vol. 20, pp. 31878.

    • Search Google Scholar
    • Export Citation
  • Leuthold, Jane H., 1991, “Tax Shares in Developing Economies: A Panel Study,” Journal of Development Economics, Vol. 35, pp. 17385.

    • Search Google Scholar
    • Export Citation
  • Liberati, Paolo, 2001, “The Distributional Effects of Indirect Tax Changes in Italy,” International Tax and Public Finance, Vol. 8, (No. 1), pp. 2751.

    • Search Google Scholar
    • Export Citation
  • Lockwood, Ben, 1993, “Commodity Tax Competition Under Destination and Origin Principles,” Journal of Public Economics, Vol. 52, pp. 14162.

    • Search Google Scholar
    • Export Citation
  • Lockwood, Ben, David de Meza, and Gareth Myles, 1994, “When Are Destination and Origin Regimes Equivalent?” International Tax and Public Finance, Vol. 1, pp. 524.

    • Search Google Scholar
    • Export Citation
  • Longo, Carlos, 1991, “The VAT in Brazil,” in Tax Policy in Developing Countries, ed. by J. Khalilzadeh-Shirazi and A. Shah (Washington: World Bank), pp. 12128.

    • Search Google Scholar
    • Export Citation
  • Marchand, Maurice, Mario Nava, and Fred Schroyen, 1996, “Optimal Fiscal and Public Expenditure Policy in a Two-Class Economy,” Journal of Public Economics, Vol. 61 (No. 1), pp. 11937.

    • Search Google Scholar
    • Export Citation
  • McLure, Charles E., Jr., 1987, The Value-Added Tax: Key to Deficit Reduction? (Washington: American Enterprise Institute).

  • McLure, Charles E., Jr., 1999, “Electronic Commerce and the State Retail Sales Tax: A Challenge to American Federalism,” International Tax and Public Finance, Vol. 6, pp. 193224.

    • Search Google Scholar
    • Export Citation
  • McLure, Charles E., Jr., 2000, “Implementing Sub-National Value-Added Taxes on Internal Trade: The Compensating VAT (CVAT), International Tax and Public Finance, Vol. 7 (No. 6), pp. 72340.

    • Search Google Scholar
    • Export Citation
  • Messere, Ken, 1994, “Consumption Tax Rules,” Bulletin for International Fiscal Documentation, Vol. 48, pp. 66581.

  • Mintz, Jack, 1995, “Business Transfer Tax as a Consumption Tax,” Tax Notes International, Vol. 10, pp. 7586.

  • Nellor, David, 1987, “The Effect of Value-Added Tax on the Tax Ratio,” IMF Working Paper 87/47 (Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Newbery, David, 1986, “On the Desirability of Input Taxes,” Economics Letters, Vol. 20 (No. 3), pp. 26770.

  • New Zealand, Inland Revenue Department, 1999, GST: A Review (Wellington, New Zealand).

  • OECD, 1988, Taxing Consumption (Paris: OECD).

  • OECD, 2001, Taxation and Electronic Commerce: Implementing the Ottawa Taxation Framework Conditions (Paris: OECD).

  • Ogley, Adrian, 1997, “VAT and Telecommunications Services in the European Union,” Tax Notes International, Vol. 14, pp. 115562.

  • Ogley, Adrian, 1998, Principles of Value-Added Tax: A European Perspective (London: Interfisc).

  • Oldman, Oliver, and Alan Schenk, 1995, “The Business Activities Tax: Have Senators Danforth and Boren Discovered a Better Value-Added Tax?” Tax Notes International, Vol. 10, pp. 5574.

    • Search Google Scholar
    • Export Citation
  • Pellechio, Anthony J., and Catherine B. Hill, 1996, “Equivalence of the Production and Consumption Methods of Calculating the Value-Added Tax: Application to Zambia,” IMF Working Paper 96/67 (Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Piggott, John, and John Whalley, 1998, “VAT Base Broadening, Self-Supply, and the Informal Sector,” NBER Working Paper 6349 (Cambridge, Massachusetts: National Bureau of Economic Research).

    • Search Google Scholar
    • Export Citation
  • Poddar, Satya, and Morley English, 1997, “Taxation of Financial Services Under a Value-Added Tax: Applying the Cash-Flow Method,” National Tax Journal, Vol. 50, pp. 89111.

    • Search Google Scholar
    • Export Citation
  • Poterba, James, 1989, “Lifetime Incidence and the Distributional Burden of Excise Taxes,” American Economic Review, Vol. 79 (No. 2) pp. 32530.

    • Search Google Scholar
    • Export Citation
  • Rainer, Anno, and Danny Claeys, 1997, “European Commission Proposes VAT Regime for Telecommunication Services,” Tax Notes International, Vol. 14, pp. 54750.

    • Search Google Scholar
    • Export Citation
  • Ring, Raymond J., Jr., 1989, “Proportion of Consumers’ and Producers’ Goods in the General Sales Tax,” National Tax Journal, Vol. 42, pp. 16779.

    • Search Google Scholar
    • Export Citation
  • Rodrik, Dani, 1998, “Why Do More Open Economies Have Bigger Governments?” Journal of Political Economy, Vol. 106, pp. 9971032.

  • Sah, Raaj K., 1983, “How Much Redistribution Is Possible through Commodity Taxes?” Journal of Public Economics, Vol. 20 (No. 1), pp. 89101.

    • Search Google Scholar
    • Export Citation
  • Schenk, Alan, and Howell H. Zee, 2001, “Treating Financial Services Under a Value-Added Tax: Conceptual Issues and Country Practices,” Tax Notes International, pp. 330916.

    • Search Google Scholar
    • Export Citation
  • Shoup, Carl S., 1973, The Value-Added Tax (Athens, Greece: Center of Planning and Economic Research).

  • Shoup, Carl S., 1990, “Choosing Among Types of VAT,” in Value-Added Taxation in Developing Countries, ed. by Malcolm Gillis, Carl S. Shoup, and Gerardo P. Sicat (Washington: World Bank), pp. 316.

    • Search Google Scholar
    • Export Citation
  • Silvani, Carlos, and Katherine Baer, 1997, “Designing a Tax Administration Reform Strategy: Experiences and Guidelines,” IMF Working Paper 97/30 (Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Silvani, Carlos, and Katherine Baer, 1993, “An Analysis of VAT Compliance” (unpublished; Washington: International Monetary Fund).

  • Silvani, Carlos, and Katherine Baer, 1996, “Selected Issues in Administering the VAT: Cross-Checking Invoices and Controlling Refunds to Exporters” (unpublished; Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Silvani, Carlos, Katherine Baer, and John Brondolo, 1996, “Selected Issues in Administering the VAT: Cross-Checking Invoices and Controlling Refunds to Exporters” (mimeo; Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Silvani, Carlos, and Richard Fulford, 1995, “Administration of the VAT in the Russian Federation—Self-Assessment of Tax Liabilities” (Vienna: Joint Vienna Institute).

    • Search Google Scholar
    • Export Citation
  • Södersten, Jan, 1999, “Why Europe Adopted the Value-Added Tax” (unpublished; Uppsala, Sweden: Uppsala University).

  • Stockfisch, J.A., 1985, “Value-Added Taxes and the Size of Government: Some Evidence,” National Tax Journal, Vol. 38 (No. 4), pp. 54752.

    • Search Google Scholar
    • Export Citation
  • Stotsky, Janet, and Asegedech WoldeMariam, 1997, “Tax Effort in Sub-Saharan Africa,” IMF Working Paper 97/107 (Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Strachan, Valerie, 1998, “Twenty-Five Years of VAT,” British Tax Review, No. 6, pp. 54751.

  • Sullivan, Clara K., 1965, The Tax on Value-Added (New York: Columbia University Press).

  • Summers, Victoria P., and Emil M. Sunley, 1995, “An Analysis of Value-Added Taxes in Russia and Other Countries of the Former Soviet Union,” Tax Notes International, Vol. 10, pp. 204972.

    • Search Google Scholar
    • Export Citation
  • Tait, Alan A., 1988, The Value-Added Tax: International Practice and Problems (Washington: International Monetary Fund).

  • Tait, Alan A., ed., 1991, Value-Added Tax: Administrative and Policy Issues, IMF Occasional Paper No. 88 (Washington: International Monetary Fund).

    • Search Google Scholar
    • Export Citation
  • Tanzi, Vito, 1987, “Quantitative Characteristics of the Tax Systems of Developing Countries,” in The Theory of Taxation for Developing Countries, ed. by D. Newbery and N. Stern (Oxford: Oxford University Press), pp. 20541.

    • Search Google Scholar
    • Export Citation
  • Tanzi, Vito, 1992, “Structural Factors and Tax Revenue in Developing Countries: A Decade of Evidence,” in Open Economies: Structural Adjustment and Agriculture, ed. by I. Goldin and A.L. Winters (Cambridge, U.K., and New York: Cambridge University Press), pp. 20541.

    • Search Google Scholar
    • Export Citation
  • Tanzi, Vito, 1995, Taxation in an Integrating World (Washington: Brookings Institution).

  • Terkper, Seth A., 1995, “Defending the VAT in Africa,” Tax Notes International, Vol. 11, pp. 131319.

  • Terkper, Seth A., 1996, “VAT in Ghana: Why It Failed,” Tax Notes International, Vol. 12, pp. 180116.

  • United Kingdom, National Audit Office, 1994, “H.M. Customs and Excise: Cost to Business of Complying with VAT Requirements” (London: Her Majesty’s Stationery Office).

    • Search Google Scholar
    • Export Citation
  • Varsano, Ricardo, 1999, “Subnational Taxation and the Treatment of Interstate Trade in Brazil: Problems and a Proposed Solution.” forthcoming in S. J. Burki and G. Peary, eds., Decentralization and Accountability of the Public Sector, Proceedings of the Annual Bank Conference on Development in Latin America and the Caribbean (Washington: World Bank).

    • Search Google Scholar
    • Export Citation
  • Wildasin, David, 1977, “Production Efficiency in Tax-Distorted Economies with Multiple Revenue Constraints” (unpublished; University of Illinois).

    • Search Google Scholar
    • Export Citation
  • Williams, David, 1996, “Value-Added Tax,” in Tax Law Design and Drafting, ed. by Victor Thuronyi (Washington: International Monetary Fund), pp. 164230.

    • Search Google Scholar
    • Export Citation
  • Younger, Stephen D., and David E. Sahn, 1998, “Fiscal Incidence in Africa: Microeconomic Evidence,” Cornell Food and Nutrition Policy Program Working Paper 91 (Ithaca, New York: Cornell University).

    • Search Google Scholar
    • Export Citation
  • Younger, Stephen D., David E. Sahn, David Sahn, Steven Haggblade, and Paul A. Dorosh, 1999, “Tax Incidence in Madagascar: An Analysis Using Household Data,” World Bank Economic Review, Vol. 13, pp. 30331.

    • Search Google Scholar
    • Export Citation
  • Zee, Howell, 1995, “Value-Added Tax,” in Tax Policy Handbook, ed. by Parthasarathi Shome (Washington: International Monetary Fund), pp. 8699.

    • Search Google Scholar
    • Export Citation
  • Zodrow, George R., 1999, “The Sales Tax, the VAT, and Taxes in Between—Or, Is the Only Good NRST a ‘VAT in Drag’?” National Tax Journal, Vol. 52, pp. 42942.

    • Search Google Scholar
    • Export Citation