A useful explanation is a starting point; the controlling text and applicable dates complete the research.
Frame the issue, identify the tax year, locate the statute, then read the relevant regulations and published guidance. Consider applicable judicial decisions and the jurisdiction. Check exceptions, cross-references and effective dates before relying on a general rule.
IRS publications and FAQs help readers navigate a topic, but they do not have the same role as statutes, regulations or published guidance. Cornell offers a readable Code mirror. eCFR supplies current regulatory text and historical tools; it describes its continuously updated text as authoritative but unofficial.
Work through an example
Research path: a cash distribution question begins with § 731, but debt changes lead to § 752, property basis to § 732, and hot assets to § 751. Publication 541 helps organize the questions.
Return to the sources
Code, regulations and official guidance
A federal source map connecting the statute, Treasury regulations and published administrative guidance.
Understanding IRS guidance
Learn what revenue rulings, revenue procedures, notices and other guidance are intended to do.
Internal Revenue Bulletins
Browse the IRS publication used to announce official rulings, procedures and Treasury Decisions.
Authority and reliance: IRB guidance and FAQs
Understand why an IRS web explanation and a published ruling have different roles in research.
Official U.S. Code: Title 26
Cross-check the Internal Revenue Code in the government’s current preliminary edition and inspect source notes.
Publication 541: Partnerships
A readable orientation to partnership tax concepts. Use the Code and regulations to support a legal conclusion.
First edition: November 15, 2026. Educational scope and current links reviewed for this release. Source text and effective dates control.