Except as otherwise provided in this title-
For purposes of subchapter B of chapter 63 (relating to deficiency procedures for income, estate, gift, and certain excise taxes), subsection (a) shall not apply to any addition to tax under section 6651, 6654, or 6655; except that it shall apply-
26 U.S.C. § 6665
STATUTORY NOTES AND RELATED SUBSIDIARIES
EFFECTIVE DATESection applicable to returns the due date for which (determined without regard to extensions) is after Dec. 31, 1989, see section 7721(d) of Pub. L. 101-239, set out as an Effective Date of 1989 Amendment note under section 461 of this title.
- taxable year
- The term "taxable year" means the calendar year, or the fiscal year ending during such calendar year, upon the basis of which the taxable income is computed under subtitle A. "Taxable year" means, in the case of a return made for a fractional part of a year under the provisions of subtitle A or under regulations prescribed by the Secretary, the period for which such return is made.