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Internal Revenue Code · 26 U.S.C.

Subchapter I. Natural Resources

Official text, no changes From the Office of the Law Revision Counsel, release point 119-121 (current through Public Law 119-121 (October 9, 2026)). The official version is at uscode.house.gov (external site).

  1. Part I DEDUCTIONS §§ 611–617

    1. § 611 Allowance of deduction for depletion
    2. § 612 Basis for cost depletion
    3. § 613 Percentage depletion
    4. § 613A Limitations on percentage depletion in case of oil and gas wells
    5. § 614 Definition of property
    6. § 615 Repealed
    7. § 616 Development expenditures
    8. § 617 Deduction and recapture of certain mining exploration expenditures

  2. Part II REPEALED § 621

    1. § 621 Repealed

  3. Part III SALES AND EXCHANGES §§ 631–632

    1. § 631 Gain or loss in the case of timber, coal, or domestic iron ore
    2. § 632 Repealed

  4. Part IV MINERAL PRODUCTION PAYMENTS § 636

    1. § 636 Income tax treatment of mineral production payments

  5. Part V CONTINENTAL SHELF AREAS § 638

    1. § 638 Continental shelf areas