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REG topic guide

Corporation tax for REG CPA candidates.

Corporation tax questions get easier when you separate entity-level tax, shareholder-level tax, distributions, and basis consequences instead of treating every corporation the same way.

Last reviewed July 31, 2026. World of Accountants is independent and not affiliated with the AICPA, NASBA, Becker, NINJA, UWorld, Gleim, or other CPA review providers.

Core idea

C corporations generally pay entity-level tax, while S corporations generally pass income, deductions, and credits through to shareholders. Distribution and basis rules change the tax result.

What REG likes to test

Expect C corporation taxable income, charitable limits, dividends-received deduction basics, S corporation eligibility, shareholder basis, distributions, and separately stated items.

Common miss

Candidates often mix C corporation and S corporation rules or forget that basis limits shareholder loss deductions.

How to practice

Identify the entity type first, then track whether the tax consequence happens at the entity, owner, or both.

Practice loop

Use the topic, then answer questions while the idea is fresh.

Short practice sets are enough to expose whether the rule is sticking.

Practice REG corporation tax questions