The Treasury Inspector General for Tax Administration yesterday released Multiple Use of Taxpayer Identification Numbers Continues to Result in Significant Erroneous Exemptions and Credits (2010-40-117):
Individuals inappropriately received at least $380 million in personal tax exemptions and tax credits in 2007 as a result of the multiple use of Taxpayer Identification Numbers (TINs). …These TINs were used on over 3.2 million tax returns. Over five years, erroneous exemptions and credits could exceed $1.9 billion.
