Versions of 26 CFR 1.6109-2 - Tax return preparers furnishing identifying numbers for returns or claims for refund and related requirements on LawServer 2024 26 CFR 1.6109-2 – Tax return preparers furnishing identifying numbers for returns or claims for refund and related requirements 2023 26 CFR 1.6109-2 – Tax return preparers furnishing identifying numbers for returns or claims for refund and related requirements 2022 26 CFR 1.6109-2 – Tax return preparers furnishing identifying numbers for returns or claims for refund and related requirements 2021 26 CFR 1.6109-2 – Tax return preparers furnishing identifying numbers for returns or claims for refund and related requirements 2015 26 CFR 1.6109-2 – Tax return preparers furnishing identifying numbers for returns or claims for refund and related requirements 2014 26 CFR 1.6109-2 – Tax return preparers furnishing identifying numbers for returns or claims for refund and related requirements 2010 26 CFR 1.6109-2 – Tax return preparers furnishing identifying numbers for returns or claims for refund filed after December 31, 2008 2009 26 CFR 1.6109-2 – Income tax return preparers furnishing identifying numbers for returns or claims for refund filed after December 31, 1999.