REG Professional Responsibility · Updated November 2026

Circular 230 and Tax Preparer Penalties Feel Like Random Rules. How Do You Study Them?

Do not start by memorizing every dollar penalty. Start by identifying who did something wrong and how serious the conduct was.

Bucket 1: the taxpayer

Ask what the taxpayer did: underpay, fail to file, file late, act negligently, commit fraud, or fail to make an estimated payment. Keep taxpayer rules in their own bucket.

Bucket 2: the tax return preparer

Ask what responsibility the preparer violated. Did the preparer take an improper position, fail to meet required standards, fail to provide required information, or engage in willful or reckless conduct?

Bucket 3: practitioner conduct

Circular 230 focuses on practice before the IRS. Think about due diligence, competence, conflicts, information requests, improper conduct, and standards for tax positions and advice.

Build behavior categories

Create three columns: ordinary mistake, negligence or unreasonable conduct, and willful, reckless, or fraudulent conduct. Then place examples under each category.

Separate tax law from professional ethics

A taxpayer may owe tax because of the underlying tax rule and also face a penalty. A preparer may separately face consequences. One person's penalty does not answer the entire fact pattern.

Memorize current amounts last

Penalty dollar amounts and thresholds can change. First understand who is penalized, for what conduct, and what standard applies. Then use current CPA materials for testable amounts.

Read the facts for intent

Words such as negligent, reasonable cause, willful, reckless, and fraudulent can completely change the answer. Do not skim them.

The takeaway

Classify the actor and the level of misconduct before thinking about the penalty.

Related Summit guides

FAQ

Do I need every Circular 230 rule memorized word for word?

No. Understand the major duties and prohibited conduct, then learn the specific rules your current materials emphasize.

Should I memorize penalty dollar amounts?

Know current testable amounts from updated materials, but learn the underlying conduct first.

Why do taxpayer and preparer penalties get mixed up?

The same return can involve separate responsibilities for the taxpayer and preparer.