26 U.S.C. § 6064 : Internal Revenue Code — Procedure And Administration — Information And Returns — Returns And Records — Signing And Verifying Of Returns And Other Documents — Signature Presumed Authentic Date: 7 Mar 2017 TEXT PDF The fact that an individual’s name is signed to a return, statement, or other document shall be prima facie evidence for all purposes that the return, statement, or other document was actually signed by him. (Aug. 16, 1954, ch. 736, 68A Stat. 749.)