# Treas. Reg. § 1.818-7: Denial of double deductions.

Source: eCFR as of 2026-10-19 <https://www.ecfr.gov/current/title-26/section-1.818-7>. Interprets 26 U.S.C. § 818.

Section 818(f) provides that the same item may not be deducted more than once under subpart B, part I, subchapter L, chapter 1 of the Code (relating to the determination of taxable investment income), and more than once under subpart C, part I, subchapter L, chapter 1 of the Code (relating to the determination of gain or loss from operations). 

[T.D. 6558, 26 FR 2790, Apr. 4, 1961]