Individual taxpayers who misreport charitable cash contributions they deduct on their tax returns contribute to the tax gap, the diff. between tax amounts taxpayers report and pay voluntarily and on time and the amounts they should pay under the law. The IRS estimated a gross tax gap of $345 billion for tax year 2001. One approach that tends to result in high levels of taxpayer compliance is info. reporting to IRS by third parties on taxpayer transactions. This report: (1) provides info. on characteristics of individual taxpayer misreporting of charitable cash contributions (CCC); (2) provides info. on actions that IRS takes to address misreporting; and (3) evaluates potential benefits and challenges assoc. with requiring info. reporting for CCC. Charts and tables.

This is a print on demand edition of a hard to find publication. The Internal Revenue Service (IRS) does not know how many businesses failed to file required returns, nor does it have an estimate of the associated lost tax revenue -- the business non-filing tax gap. Many cases it does investigate are unproductive because the business does not owe the return IRS expects. This report assessed: (1) the data challenges of estimating the business non-filer tax gap; (2) how recent program changes have affected IRS's capacity to identify and pursue business non-filers; and (3) additional opportunities for IRS to use third-party data. The report reviewed IRS's tax gap estimates, non-filer program processes and procedures, and matched closed non-filer cases with various other data. Includes recommend. Charts and tables.