Figures: tax year 2026
A tax return preparer prepares for compensation, or employs others to prepare for compensation, all or a substantial portion of a tax return or refund claim.
- A substantial portion depends on the item's significance and complexity relative to the return, including its effect on reported tax.
- A single consequential entry can qualify; counting completed lines does not determine status.
The Internal Revenue Code preparer definition reaches people without a professional credential. A preparer tax identification number (PTIN) identifies a paid preparer; it does not itself establish competence, licensure, or unrestricted representation rights before the IRS.
- Signing responsibility cannot be avoided by leaving the paid-preparer signature area blank.
- A nonsigning specialist remains responsible for the substantial position prepared, even when another person transmits the return.
- For understatement penalties, the responsible individual generally is the preparer primarily responsible for the offending position within the firm.
- An employing firm can also face liability under applicable management-participation, knowledge, or inadequate-compliance-procedure rules; employment alone does not establish every penalty.
Common mistakes
- Fee base replaced. A client's additional tax is not the preparer's preparation income for the fee-share calculation.
- Disclosure assumed sufficient. Disclosure cannot rescue a position below reasonable basis or replace the stricter shelter support requirement.
- Annual caps combined. Each administrative-duty provision has its own $32,500 (2026) calendar-year maximum.
Bottom line
- Compensated substantial preparation includes signing and nonsigning work, while defined mechanical, employee, fiduciary, and uncompensated activities are excluded.
- Ordinary undisclosed positions require substantial authority; reasonable basis can suffice through adequate disclosure, while shelters and covered reportable transactions require the stricter belief standard.
- The unreasonable-position penalty is the greater of $1,000 or 50% of preparation income; the higher penalty is the greater of $5,000 or 75%, reduced by the unreasonable-position penalty already paid by the same person for the same return or claim.
- The five administrative-duty penalties, including the signature penalty, use $65 (2026) per failure and separate $32,500 (2026) calendar-year caps.
Exam shortcut
Preparer recall: Who qualifies as a tax return preparer depends on actual work, compensation, and substantive responsibility. Penalty recall: Situations that result in tax return preparer penalties turn on the duty, responsible actor, and required state of mind. A disputed position requires identification of the understatement, support, disclosure, and facts establishing knowledge, reasonable reliance, or recklessness. For fee calculations, the base is preparation income.
The full lesson (about 7,690 words, 51 min read) adds 4 worked examples, all 6 common mistakes, a self-check, free in the app.
Learning objectives
- I.A2
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