26 C.F.R. § 20.6601-1

Interest on underpayment, nonpayment, or extensions of time for payment, of tax

Read at: eCFRecfr.gov CornellLII GovInfogovinfo.gov CasesGoogle Scholar

For regulations concerning interest on underpayments, etc., see § 301.6601-1 of this chapter (Regulations on Procedure and Administration).