Posted on Jun 12, 2010
The IRS interest rates charged on tax underpayments and paid on overpayments will remain unchanged for the third quarter of 2010. The rate for individual overpayments and underpayments will be 4%. The rate paid on corporate overpayments will be 3%, though if the overpayment exceeds $10,000, the rate is 1.5%. Corporate underpayments will be charged 4% interest, with a 6% rate charged on large corporate underpayments.