2024 26 CFR 20.6018-4 – Returns; documents to accompany the return

2023 26 CFR 20.6018-4 – Returns; documents to accompany the return

2022 26 CFR 20.6018-4 – Returns; documents to accompany the return

2021 26 CFR 20.6018-4 – Returns; documents to accompany the return

2020 26 CFR 20.6018-4 – Returns; documents to accompany the return

2019 26 CFR 20.6018-4 – Returns; documents to accompany the return

2016 26 CFR 20.6018-4 – Returns; documents to accompany the return

2015 26 CFR 20.6018-4 – Returns; documents to accompany the return

2014 26 CFR 20.6018-4 – Returns; documents to accompany the return

2010 26 CFR 20.6018-4 – Returns; documents to accompany the return

2009 26 CFR 20.6018-4 – Returns; documents to accompany the return