2024 26 CFR 1.193-1 – Deduction for tertiary injectant expenses

2023 26 CFR 1.193-1 – Deduction for tertiary injectant expenses

2022 26 CFR 1.193-1 – Deduction for tertiary injectant expenses

2021 26 CFR 1.193-1 – Deduction for tertiary injectant expenses

2015 26 CFR 1.193-1 – Deduction for tertiary injectant expenses

2014 26 CFR 1.193-1 – Deduction for tertiary injectant expenses

2010 26 CFR 1.193-1 – Deduction for tertiary injectant expenses

2009 26 CFR 1.193-1 – Deduction for tertiary injectant expenses