WASHINGTON – The Internal Revenue Service today announced that interest rates will remain the same for the calendar quarter beginning Oct. 1, 2019, as they were in the prior quarter.
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The rates will be:
• five (5) percent for overpayments [four (4) percent in the case of a corporation];
• two and one-half (2.5) percent for the portion of a corporate overpayment exceeding $10,000;
• five (5) percent for underpayments; and
• seven (7) percent for large corporate underpayments.
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 July 2019 to take effect Aug. 1, 2019, based on daily compounding.
Revenue Ruling 2019-21, announcing the rates of interest, is attached and will appear in Internal Revenue Bulletin 2019-38, dated Sept. 16, 2019.