United States Government Supplemental Information (Unaudited) for the Years Ended September 30, 2010, and 2009

Other Claims for Refunds

Management has estimated amounts that may be paid out as other claims for tax refunds. This estimate represents an amount (principal and interest) that may be paid for claims pending judicial review by the Federal courts or, internally, by appeals. The total estimated payout (including principal and interest) for claims pending judicial review by the Federal courts is $8.8 billion and $4.7 billion for fiscal years 2010 and 2009, respectively. For those under appeal, the estimated payout is $8.0 billion and $6.3 billion for fiscal years 2010 and 2009, respectively. There are also unasserted claims for refunds of certain excise taxes. Although these refund claims have been deemed to be probable, they do not meet the criteria in SFFAS No. 5 for reporting the amounts in the balance sheets or for disclosure in the Notes to the Financial Statements. However, they meet the criteria in SFFAS No. 7 for inclusion as supplemental information. To the extent judgments against the Government for these claims prompt other similarly situated taxpayers to file similar refund claims; these amounts could become significantly greater.