ATP 105 Ethics common mistakes
ATP 105 Ethics · Understand the traps and how to avoid them.
Treating the tax preparer's Circular 230 duties as identical to the taxpayer's own filing obligations, so the candidate answers a question about the client's liability when the question asked what the preparer must do.
Circular 230 governs practice before the IRS and imposes duties on the practitioner (due diligence, signing, advising on errors), while the client bears the ultimate liability for the return's accuracy. Candidates conflate the two because both are described in the same fact pattern.
What to do instead
Before answering, identify the actor named in the call of the question (client, preparer, or both). Then ask: does this duty arise from the Code/regulations on the taxpayer, or from Circular 230 on the practitioner? Map each duty to its source before selecting an answer.
Choosing 'the preparer must report the client's understatement to the IRS' as the answer whenever a client refuses to correct an error, skipping over the graduated steps Circular 230 actually requires.
Candidates remember that a preparer cannot ignore a known error but do not recall the sequence: advise the client, consider withdrawing, and only then take further action. Reporting to the IRS is not the first or automatic step.
What to do instead
Memorize the escalation ladder for known errors: (1) advise the client promptly of the error and its consequences, (2) if the client does not correct it, consider whether to withdraw from the engagement, (3) do not sign a return you know is incorrect. Drill this order until it is automatic.
Confusing the preparer's signature standards with the preparer's penalty exposure, so the candidate picks a Circular 230 sanction where the question is actually about an IRC preparer penalty (or vice versa).
Both topics involve preparer misconduct and both use words like 'penalty' and 'sanction,' and the exam mixes them in similar fact patterns. Candidates answer from topic recognition rather than reading what the question asks.
What to do instead
Separate the two frameworks on a study sheet: Circular 230 sanctions (censure, suspension, disbarment, monetary penalties under the regulations) versus IRC preparer penalties (e.g., understatement, unreasonable position, failure to furnish copy). Note which body of authority each answer choice cites.
Failing to apply the due diligence standard to information the preparer should have questioned, accepting client-provided figures at face value because the client signed the engagement letter.
Candidates assume client representations shift all responsibility to the client. In fact, the preparer must make reasonable inquiries when information appears incorrect or incomplete, and an engagement letter does not cure that duty.
What to do instead
When a fact pattern shows suspicious or incomplete data, ask: would a reasonable preparer have inquired further? If yes, the correct answer usually involves inquiry or documentation, not blind reliance. Practice spotting red-flag facts (inconsistent numbers, missing records, implausible deductions).
Treating 'the preparer may rely on information furnished by the client' as an absolute defense in every scenario, including where the preparer had reason to know the information was wrong.
The reliance rule is taught as a bright line, and candidates overextend it. The reliance is only reasonable when the preparer has no reason to doubt the information and has not been alerted to inconsistencies.
What to do instead
Attach the qualifier to the rule every time you use it: reliance must be reasonable and in good faith. If the facts show any signal of unreliability, the reliance defense fails and the answer should reflect the preparer's duty to verify.
Mixing up gross income inclusions and exclusions, such as counting employer-provided health insurance or qualified retirement contributions as taxable wages, because the candidate reasons from 'it's a benefit, so it's income.'
Candidates apply a lay intuition that all benefits are compensation. Statutory exclusions are exceptions to the broad definition of gross income, and candidates forget to check for an exclusion provision before including an item.
What to do instead
Use a two-step checklist for every income item: (1) is it included under the broad gross income definition, and (2) does a specific Code section exclude or defer it? Memorize the common exclusions (employer health coverage, certain fringe benefits, qualified plan contributions) as a distinct list.
Applying the wrong basis rules to property transactions, for example using fair market value instead of the donor's carryover basis for gifted property, or ignoring the step-up for inherited property.
The basis rules differ by how the property was acquired (purchase, gift, inheritance, or conversion), and candidates memorize one rule and apply it universally. The gift rule's dual-basis feature for loss property adds to the confusion.
What to do instead
Before computing gain or loss, identify the acquisition method and pull the matching basis rule: cost basis for purchases, carryover basis for gifts (with the dual-basis rule for loss property), and fair market value at date of death for inherited property. Practice classifying the acquisition first, then computing.
Misclassifying a deduction as above-the-line versus below-the-line (itemized), or forgetting that a deduction is disallowed or limited, because the candidate recognizes the expense category but not its placement or cap.
Many deductions look similar in substance but sit in different places on the return, and post-reform changes removed or capped several itemized deductions. Candidates rely on memory of the expense rather than the current rule.
What to do instead
For each deduction, record three facts: where it goes on the return (adjustment to income, itemized, or business), whether it is limited by a percentage or cap, and whether recent law changed its status. Build a one-page placement chart and review it before the exam.
Skipping the holding-period and character test and jumping straight to the tax rate, so short-term gains get long-term treatment or ordinary income gets capital treatment.
Candidates focus on the rate because it is the memorable number, but character and holding period determine which rate applies. The sequence is reversed in their reasoning.
What to do instead
Always run the character test first: what is the asset, how long was it held, and is it a capital asset? Only after establishing character and holding period should you select the rate. Write the sequence 'character, then holding period, then rate' at the top of scratch work.
Ignoring the specific facts that trigger a limitation or phase-out (filing status, AGI thresholds, dependent status) and answering with the general rule, because the candidate reads the question for the topic rather than for the qualifiers.
Exam questions often embed a threshold or status fact that changes the answer, and candidates who skim for keywords miss it. The general rule is correct in the abstract but wrong for the given facts.
What to do instead
Underline or note every quantitative fact and status fact (AGI, filing status, age, dependent) before evaluating answer choices. Then ask which limitation or phase-out those facts trigger. If an answer choice ignores a stated fact, it is usually a distractor.