On January 6, 2012 he Internal Revenue Service released a new set of tax gap estimates for tax year 2006. The tax gap is defined as the amount of tax liability faced by taxpayers that is not paid on time.
From the Government’s perspective, statutes of limitation restrict the taxpayer’s right to claim a refund of
overpaid tax or initiate litigation to obtain a refund. From the taxpayer’s perspective, statutes of limitation
prevent the IRS from collecting a deficiency in tax or beginning a civil or criminal case. In short, statutes of
limitation provide a date of finality after which actions taken by the IRS or the taxpayer cannot be disturbed by
the other party