A subset of Lexis-Nexis containing the Internal Revenue Bulletin / Cumulative Bulletin, Internal Revenue Code, Treasury Regulations, Federal and State Tax Cases, and more.
- IRS Cumulative Bulletin and Internal Revenue Bulletin
- From 1954 through current
- IRS Actions on Decisions
- From October 1963 through current
- IRS Private Letter Rulings and Technical Advice Memoranda
- From 1954 through July 20, 2006
- IRS Technical Memoranda
- From July 1967 through current
- Treasury Regulations - Final, Temporary, and Proposed
- Current