26 CFR § 1.6102-1
Computations on returns or other documents
June 25, 2020
For provisions with respect to the rounding off to whole-dollar amounts of money items on returns and accompanying schedules, see §301.6102-1 of this chapter (Regulations on Procedure and Administration).
[T.D. 6500, 25 FR 12137, Nov. 26, 1960]