2013 4th Quarter Underpayment and Overpayment Interest Rates
The underpayment and overpayment interest rates will remain the same for the calendar quarter beginning October 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 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.
Interest factors for daily compound interest for annual rates of 0.5 percent are published in Appendix A of Revenue Ruling 2011-32. Interest factors for daily compound interest for annual rates of 2 percent, 3 percent and 5 percent are published in Tables 7, 9, 11, and 15 of Rev. Proc. 95-17, 1995-1 C.B. 561, 563, 565, and 569.