Large Corporate Underpayment

About Large Corporate Underpayment:

for any taxable period, any underpayment of a tax by a C corporation that exceeds $100,000. The interest rate charged by the U.S. Internal Revenue Service is the short-term applicable federal rate plus 5 percentage points, as compared to an additional 3 percentage points for “small” underpayments. The difference of 2 percentage points is sometimes referred to as “hot interest.”.