# Treas. Reg. § 1.263(c)-1: Intangible drilling and development costs in the case of oil and gas wells.

Source: eCFR as of 2026-10-19 <https://www.ecfr.gov/current/title-26/section-1.263(c)-1>. Interprets 26 U.S.C. § 263.

For rules relating to the option to deduct as expenses intangible drilling and development costs in the case of oil and gas wells, see § 1.612-4.