(a) In general.
         Each tax return or claim for refund for tax under chapter 41 of subtitle D prepared by one or more signing tax return preparers must include the identifying number of the preparer required by  § 1.6695-1(b) of this chapter to sign the return or claim for refund in the manner stated in  § 1.6109-2 of this chapter.
     
    
        
        (b) Effective/applicability date.
         Paragraph (a) of this section is applicable to returns and claims for refund filed after December 31, 2008.
     
    
        
            Code of Federal Regulations
        
        [T.D. 9436, 73 FR 78460, Dec. 22, 2008]