IR-2012-99, Nov. 30, 2012 WASHINGTON ― The Internal Revenue Service today announced that interest rates will remain the same for the calendar quarter beginning Jan. 1, 2013. The rates will be: three (3) percent for overpayments [two (2) percent in the case of a corporation]; three (3) percent for underpayments; five (5) percent for large corporate underpayments; and one-half (0.5) percent for the portion of a corporate overpayment exceeding $10,000. Under the Internal Revenue Code, the rate of interest is determined on a quarterly basis. For taxpayers other than corporations, the overpayment and underpayment rate is the federal short-term rate plus 3 percentage points. Generally, in the case of a corporation, the underpayment rate is the federal short-term rate plus 3 percentage points and the overpayment rate is the federal short-term rate plus 2 percentage points. The rate for large corporate underpayments is the federal short-term rate plus 5 percentage points. The rate on the portion of a corporate overpayment of tax exceeding $10,000 for a taxable period is the federal short-term rate plus one-half (0.5) of a percentage point. The interest rates announced today are computed from the federal short-term rate determined during October 2012 to take effect Nov. 1, 2012, based on daily compounding. Revenue Ruling 2012-32 PDF, announcing the rates of interest, is attached and will appear in Internal Revenue Bulletin 2012-52, dated Dec.27, 2012. Follow the IRS on New Media Subscribe to IRS Newswire
