§ 31.110 - Interest on unpaid tax.

(a) General. Interest is due on unpaid special tax from the date the tax was required to be paid to the date paid. Interest shall be charged for each day at the rate prescribed by law in effect on that day.

(b) Adjusted interest rates. Adjusted interest rates are announced by the Commissioner of Internal Revenue not later than October 15 of any year, in accordance with variations in the prime interest rate during September of that year, as prescribed by 26 U.S.C. 6621(b). The appropriate TTB officer will provide information, when requested, regarding interest rates applicable to specific time periods.