More than 80% of all tax returns are eliminated under the FairTax--every individual filing. What remains are retail outlets collecting the FairTax. Of these, 80 percent of all retail sales now occur at large retail chains like Wal-Mart. The point is oversight will still reside under the Treasury Department but the government's responsibility will be over a far smaller "universe" of tax collection points making compliance oversight far less costly and far more effective than the current system which costs $265 billion a year in compliance costs and still comes up $350 billion a year short of what is owed.
Read more information about compliance in the FairTax white paper: FairTax Reduces Complexity, Compliance Costs and Noncompliance.