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Interest Rates Rise for the Third Quarter of 2006

IR-2006-89, June 5, 2006

WASHINGTON — The Internal Revenue Service today announced there will be an increase in the interest rates for the calendar quarter beginning July 1, 2006.  Each of these interest rates increases by a single interest point over the rate in the second quarter. The interest rates are as follows:  
 

  • eight (8) percent for overpayments [seven (7) percent in the case of a corporation];
  • eight (8) percent for underpayments;
  • ten (10) percent for large corporate underpayments; and
  • five and one-half (5.5) 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 based on daily compounding determined during April 2006.

Rev. Rul. 2006-30, announcing the new rates of interest, is attached and will appear in Internal Revenue Bulletin No. 2006-25, dated June 19, 2006.

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