26 CFR § 40.6696-1
Claims for credit or refund by tax return preparers
June 25, 2020
(a) In general. The rules under §1.6696-1 of this chapter will apply for claims for credit or refund by a tax return preparer who prepared a return or claim for refund of any tax to which this part 40 applies.
(b) Effective/applicability date. This section is applicable to returns and claims for refund filed, and advice provided, after December 31, 2008.
[T.D. 9436, 73 FR 78455, Dec. 22, 2008; 74 FR 5106, Jan. 29, 2009]