Section 6621 establishes the rates for interest on tax overpayments and tax underpayments. It provides that for purposes of interest payable under section 6601 on any large corporate underpayment.EBSCO_bspInternal Revenue Bulletin
The 2024 basic exclusion amount for determining the amount of unified credit is $13,610,000, and the "2-percent portion" under section 6601(j) is $1,850,000. The amount of tax deferred at the 2% rate is $740,000. Aug-25-2023 - IRS interest rates increase for the fourth quarter ...