U.S. Federal tax law

• Internal Revenue Code (Title 26 U.S.C.)

  2,140 sections

• Treasury Regulations (26 C.F.R.)

  6,155 sections

• IRS Forms & Instructions

  183 documents

• IRS Publications

  57 documents

• Internal Revenue Manual

  1,751 documents

• Internal Revenue Bulletin — Rulings & Guidance

  1,945 sections

• U.S. Tax Court Opinions

  1,541 documents