Would a national retail sales tax simplify the tax code?
It would for individuals, but not so much for business and enforcement authorities.
Constructed as a flat-rate consumption tax with a universal demogrant (cash payment) for needy families, the proposed national retail sales tax contains many of the features that make taxation simpler. Most individuals would no longer need to keep tax records, learn the fundamentals of tax law, or even file returns. Only sole proprietorships, partnerships, and S or C corporations that make retail sales would have to file. And the complexity of filing a return would decline dramatically, even for these taxpayers.
But a national retail sales tax could create new areas of complexity in, for example, administering the proposed demogrant that returns part of the revenue to millions of households, enforcing the tax code to ensure that personal and business consumption are not mixed.
In many proposals, the demogrant that would accompany a national retail sales tax would likely be based on the existing federal poverty level, which rises less than proportionally with the number of family members. For example, in 2014, single individuals fell beneath the federal poverty level if their annual incomes were less than $11,670. This number rose by $4,060 for each additional family member. Thus the federal poverty level for a family of four in 2014 was $23,580, roughly twice the level for an individual. Basing the demogrant on the federal poverty level would thus create incentives to conceal family relationships to claim the demogrant for more than one individual in a family.
It is also unclear how the demogrants would be administered or even which agencies would be responsible for determining eligibility and monitoring claims. Thus, compliance and administrative costs could be significant.
Tax Avoidance and Evasion
Another area of complexity stems from the threat of tax avoidance and evasion. The most likely way that people would try to avoid the tax would be by disguising personal consumption as business activity, since business-to-business transactions would not be taxed. For example, individuals might seek to register as firms or purchase goods for personal use with a business certificate. Or employers might buy goods for their workers in lieu of paying wages. Ensuring that all business purchases are not taxed and that all consumer purchases are taxed would require all businesses to keep records of their transactions, even though only retailers would actually have to remit the tax. Some proposed tax plans deviate from a pure retail sales tax by requiring that taxes be paid on many input purchases and that vendors file explicit claims to receive rebates on their business purchases. Such requirements would raise compliance costs further.
Some related evidence on the potential extent of these problems comes from the experience with state-level “use” taxes, under which taxpayers are obliged to make tax payments on goods purchased in other states. One analyst described the current level of enforcement of such taxes as “dismal at best.”
General Accounting Office. 1998. Potential Impact of Alternative Taxes on Taxpayers and Administrators. Washington, DC: General Accounting Office.
Murray, Matthew N. 1997. “Would Tax Evasion and Tax Avoidance Undermine a National Retail Sales Tax?” National Tax Journal 50 (1): 167–82.