26 CFR § 31.3502-1
Nondeductibility of taxes in computing taxable income
June 25, 2020
For provisions relating to the nondeductibility, in computing taxable income under subtitle A, of the taxes imposed by sections 3101, 3201, and 3211, and of the tax deducted and withheld under chapter 24, see §§1.164-2 and 1.275-1 of this chapter (Income Tax Regulations). For provisions relating to the credit allowable to the recipient of the income in respect of the tax deducted and withheld under chapter 24, see §1.31-1 of this chapter (Income Tax Regulations).
[T.D. 6780, 29 FR 18148, Dec. 22, 1964]