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IRS Business Activity Code for Oil and Gas Extraction

The IRS principal business activity code for a(n) Oil and Gas Extraction business is 211120 (derived from NAICS code 211120).

PBA Asset Details

IRS PBA Code	211120
Associated NAICS Code	NAICS 211120 (Crude Petroleum Extraction)
Tax Forms	Schedule C Line B, Form 1065, Form 1120, Form 1120-S
Mapping Integrity	This industry maps to a direct, exact-match IRS Principal Business Activity code.

Disclaimer: Informational only — not tax, legal, or financial advice. IRS Principal Business Activity mapping definitions may change. Always cross-verify with official IRS Form 1040 (Schedule C) instructions before filing. Read our full Legal Disclaimer.

PBA vs NAICS Common Mismatches

While IRS PBA codes are based on NAICS categories, the IRS simplifies the database by rolling up several specific 6-digit NAICS codes into a broader category. Always check the official IRS Schedule C instructions to confirm that the simplified code is accepted for your tax year.

YMYL Compliance Disclaimer: Principal Business Activity lists are updated annually by the Internal Revenue Service. Always cross-verify with the official instructions for Form 1040 (Schedule C) or Form 1120 before final filing.

Related Pages & Tools

NAICS Code 211120 Profile — Official definition, SBA size standards, and statistics.
Industry Directory for Oil and Gas Extraction — Alternative codes and structure.
IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.

Primary Ingestion Source

Data derived from the IRS Instructions for Schedule C (Form 1040) Principal Business Activity Codes. Last verified on 2026-06-30.