The standards for measuring the effectiveness of the national sales tax policy are consistent with the principles of equality, liberty, and efficiency. Economic equality, understood as the necessity for equitable taxation, requires consistency in taxation methods. Because the federal government will collect taxes, it ensures that all 50 states will be justly compensated
with the revenue owed to that particular state. In addition, it will curb the likelihood of states creating individual tax rates or discriminatory tax rates levied against "particular goods.