Page 9 · I · Due Diligence
Know When to Ask More
Incorrect, inconsistent, or incomplete information triggers reasonable follow-up inquiries and documented answers.
PDF GUIDE FOR PAID TAX PREPARERS · 68 PAGES, 64 DRAWN
An interview-to-file guide for tax year 2026 returns filed in 2027. Practice what to ask, when to follow up, and what to record alongside your software.
68 pages (64 drawn) · 8 parts · PDF by email



The guide + 2 bonus books
Explore a topic, then tap a page to read it up close. Each page links a drawn situation to a question, a follow-up trigger, and a sample note.
Page 9 · I · Due Diligence
Incorrect, inconsistent, or incomplete information triggers reasonable follow-up inquiries and documented answers.
Page 17 · II · Client Interview
Document how, when, and from whom information was obtained.
Page 25 · III · EITC
When both eligible parents claim, residence time controls first; equal time requires an AGI comparison.
Page 41 · V · AOTC
The early-next-year window covers academic periods beginning in January, February, or March.
Page 49 · VI · Head of Household
A qualifying dependent parent need not live with you; verify dependency and more-than-half home costs separately.
Page 57 · VII · Follow-Up Notes
Follow-up inquiries and responses require contemporaneous documentation.
Page 65 · VIII · File Review
Fictional exercise: 20 appointments and 8 receipts require explanation, not an invented income total.
Swipe either way · Tap to enlarge · A sample of the book. Not the full PDF.
Five situations where a file breaks down—and the drawn page that walks you through each one. Pick a topic.
Your software saved a yes. But the file doesn't show what you asked or what the client said. Checking a box does not satisfy the knowledge requirement.
Page 9 connects the trigger—incorrect, inconsistent, or incomplete information—to reasonable follow-up inquiries and contemporaneous documentation. Each drawn page links the question to the note.
Up to six hundred and sixty-five dollars per failure for returns filed in 2027 (Rev. Proc. 2025-32). Four covered benefits—EITC, CTC/ACTC/ODC, AOTC, and Head of Household—can mean up to 2,660 dollars on one single return.
Page 57 shows how to document the follow-up question and the client's answer at the time you ask it. The guide helps you see what each requirement asks and record what you did—not a guarantee against penalties.
In a due diligence audit (Letter 6199 visit or 6222 correspondence), the IRS examiner requests a minimum of 25 client files. The IRS proposed penalties on over ninety percent of the preparers selected.
Page 65 walks through a practice file the way an examiner reads it: interview notes, follow-up record, document index, and retention dates. Build each file before the season starts.
AOTC now requires an SSN for the taxpayer (one on a joint return) and the student, starting with tax year 2026 returns. CTC and ACTC already require SSNs since tax year 2025. A child with an ITIN qualifies for ODC, not CTC.
Page 41 checks the 2026 AOTC SSN change alongside qualified expenses and payment periods. The bonus review cards keep every SSN and ITIN rule together by credit and tax year.
Your seasonal preparer documents each interview differently. The firm can be penalized for an employee's due diligence failure—same penalty, same audit letter.
Page 17 shows one consistent way to record who supplied each answer, when, and how. The guide gives the whole office the same interview-to-file routine and a shared reference for follow-up notes.
These are 5 of the 64 drawn pages across 68 total: every section of the interview-to-file routine has its own.
Rule summary—not a quotation: You can generally rely on information provided without independently verifying it. You cannot ignore information that appears incorrect, inconsistent, or incomplete. Make reasonable inquiries and document the questions and responses at the time. Source: Treasury Regulation § 1.6695-2.
You already have tax software and filing-season experience. This guide focuses on the interview behind the entries: follow-up questions, client answers, and sample notes you can use to review your own documentation process.
You want to review the workflow and keep tax year 2026 separate from the 2027 filing season.
The firm can be penalized for any preparer's due diligence failure. You want the same interview routine and note structure across every desk, so a reviewer can follow any file without calling the preparer.
Follow eight sections from the four due diligence requirements to the final file check. Use the same routine throughout: identify the benefit, ask, clarify, document, and review.
Independent study material for tax year 2026, for paid preparers of U.S. federal individual income tax returns. Not affiliated with the IRS; not tax advice; no license, PTIN, AFSP, or continuing education credit is awarded.
This is how your next EITC client feels different with the guide open.
Less guessing, less rework, every return.
The main guide walks through the interview. One bonus book lets you practice, the other keeps tax year 2026 changes in one place.

THE CORE GUIDE
From the interview to the file review: 68 pages (64 drawn), eight sections, with the four due diligence requirements for tax year 2026.

FREE BONUS 01
Practice turning incomplete client answers into follow-up questions and clear notes, with worked examples you can compare against your own.

FREE BONUS 02
Keep the tax year 2026 SSN changes and key documentation checks together so you can review them without mixing up tax years and filing years.
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See every question, practice the follow-up, and keep the 2026 changes together.
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It turns the Form 8867 interview into a clear visual path. Following EITC, CTC/ACTC/ODC, AOTC and Head of Household question by question finally makes due diligence feel logical, not like a box to click.
Outstanding resource for entry-level preparers. Seeing the four due diligence requirements laid out graphically clears up what to ask, what to write down and what to keep.
Cuts through IRS fog with clean, diagrammatic precision. The follow-up questions for answers that look incorrect, inconsistent or incomplete are exactly what I was missing.
Use the guide as you organize your interview questions and client notes. If it doesn't help you structure your documentation, tell us what didn't work and we'll refund 100% of your purchase.
hello@fenix-books.comIt is a PDF book with two companion PDF books, sent by email. No printed books are shipped. You can print them in US Letter size.
Yes. You can read the PDFs on a phone, tablet, or computer. Zoom in to read a note or study a drawing.
The routine is explained step by step. You still need basic federal tax preparation knowledge and training to apply the rules.
The book and both companion books are sent as PDFs by email to the address you enter at checkout.
Yes. This pack is a one-time purchase, not a subscription.
No. It is an independent educational reference. It is not affiliated with or endorsed by the IRS.
No. It does not replace training, supervised practice, current official instructions, or your professional judgment. It provides no license, continuing education credit, or guarantee of compliance.
This guide focuses on tax year 2026 returns filed in 2027. Use it to organize interview questions, follow-up, and file notes. It is not a final tax year 2026 rules checklist: the cited Form 8867 instructions are revised November 2025. Source notes identify the tax year and revision date. Before using an eligibility rule or calculation for a client, check the applicable final IRS forms, instructions, and updates.
It helps structure the conversation behind the entries: what to ask, when an answer needs follow-up, and what to record. It does not replace your software or credit calculations.
Yes. It includes sample questions, notes, and practice files. Source links include IRS Form 8867 instructions and Treasury Regulation § 1.6695-2. Examples are educational; they do not determine a real client's eligibility.
AOTC now requires an SSN for the taxpayer (one on a joint return) and the student, starting with tax year 2026. CTC and ACTC already require SSNs since tax year 2025. A child with an ITIN may qualify for the Other Dependent Credit (ODC), not CTC. The guide and the bonus review cards cover these changes by credit and tax year.
Yes. The guide gives every preparer the same interview-to-file routine: what to ask, when to follow up, and how to write the note. It helps a supervisor review another preparer's file and helps a new hire learn the documentation process without relying on verbal instructions.
YOUR NEXT STEP
Keep the question, the answer, and your reasoning together.
Give each follow-up a clear place in the file.
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