Browse Taxation and Regulation (REG)

Taxation and Regulation (REG)

Use the REG guide to connect ethics, business law, property transactions, and federal taxation across individuals and entities.

REG tests more than recall of tax rules. The section depends on recognizing which authority applies, what the transaction does to basis or character, and how legal and procedural constraints shape the answer. This guide is arranged so you can move from professional responsibilities into business law and then through the major federal tax areas.

Chapter Map

REG questions should be solved by identifying the legal or tax relationship first. A fact pattern may look computational, but the controlling issue can be authority weight, taxpayer status, business-law rights, basis, character, entity form, or practitioner responsibility. The guide is designed to make those distinctions explicit before final review.

REG Study Lens

REG task What to decide Common trap
Ethics and procedure Which professional duty, IRS process, deadline, or penalty rule applies. Treating a procedural constraint as background information.
Business law Which legal relationship creates rights, obligations, liability, or remedy. Ignoring legal status because no tax computation is required.
Property transactions Amount realized, adjusted basis, character, recognition, and deferral. Calculating gain before checking nonrecognition or related-party rules.
Individual and entity tax Which taxpayer or entity framework controls income, deduction, basis, and reporting. Applying individual rules to an entity or pass-through rules to a C corporation.
Planning and review Whether the answer is defensible under authority, timing, documentation, and future consequences. Choosing the lowest tax result without checking support or later effects.

REG Issue-Order Checkpoints

Checkpoint Ask before answering Why it improves REG accuracy
Relationship Is the controlling relationship practitioner-client, taxpayer-IRS, debtor-creditor, principal-agent, owner-entity, or buyer-seller? REG often tests legal status before tax computation.
Authority Which statute, regulation, IRS guidance, court rule, or professional standard controls the issue? A plausible tax answer can be wrong if it relies on the wrong authority.
Taxpayer framework Is the relevant taxpayer an individual, C corporation, S corporation, partnership, estate, trust, or exempt organization? Entity form changes income, deduction, basis, allocation, and filing treatment.
Transaction effect What changes in basis, character, timing, recognition, liability, or documentation? Most computational REG questions are controlled by the transaction’s legal effect.
Support and future consequence What record, disclosure, carryover, election, or later-year result follows from the answer? The best answer usually accounts for both current result and compliance support.

How to Use This Guide

  • Read Parts II through VI as the core REG spine.
  • Use Parts VII and VIII after the main framework is stable so planning and special-transaction rules have context.
  • Return to Part IX near review phase, not as a substitute for the main tax and law lessons.

In this section

Revised on Monday, June 15, 2026