Interest Rates Increase for the Second Quarter of 2018

IR-2018-43, March 7, 2018

WASHINGTON ― The Internal Revenue Service today announced that interest rates increased for the calendar quarter beginning April 1, 2018. 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 […]