P3-U01 · PART 3 · SOURCE CYCLE 2026-2027
Legal Authority of the IRS
Only cards whose complete question and answer were checked against exact primary-authority evidence appear here.
Q1.Where is the authoritative distribution source for official IRS tax guidance such as revenue rulings, revenue procedures, notices, and announcements?
The Internal Revenue Bulletin. The Internal Revenue Bulletin is the authoritative distribution source for official IRS tax guidance.
Q2.What official rule governs case law?
Court opinions interpret tax law; the controlling court and procedural posture matter when evaluating precedent.
Q3.Summarize the correct treatment of the IRS forms, instructions, and publications.
IRS forms, instructions, and publications are official guidance resources but are not substitutes for controlling law.
Q4.What common mistake should be avoided with private letter ruling?
A private letter ruling applies to the requesting taxpayer and generally may not be used as precedent by others.
Q5.What should a representative verify about tax treaties?
A tax treaty can reduce or exempt U.S. tax on specified income when the treaty, taxpayer, and item of income satisfy its terms.
Q6.What is the exam-ready rule on freedom of Information Act (FOIA) requests?
FOIA provides a process to request agency records, subject to statutory exemptions and tax-return confidentiality limits.