# Tax return review checklist: what a reviewer checks before filing

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By [Arthur Teboul](/authors/arthur-teboul), Founder, DokuTrak. Published 2026-11-05, updated 2026-11-05.

> **In brief:** A tax return review checklist walks a second person through the return before filing: consent and identity, source documents tied to entries, carryovers, credits and due diligence, positions, and the signed Form 8879. Each section ends with a sign-off and a list of documents still missing.

## The checklist: Reviewer sign-off sheet: one return, line by line

**Not advice.** This page is general information, not tax, legal or HR advice. Rules change: check the cited source and ask your own professional before you rely on it. Last reviewed October 25, 2026.

One sheet per return. The reviewer initials each line; anything missing goes into one document request to the client before sign-off.

### File and identity

- [ ] Signed engagement letter for the tax year: Scope matches the returns being filed
- [ ] Section 7216 consent, if information is used beyond preparation: Signed before the use or disclosure
- [ ] Social Security cards or ITIN letters on file: Names and numbers match the return
- [ ] IP PINs entered where the IRS issued one: For each taxpayer and dependent who has one

### Prior year and carryovers

- [ ] Last year’s return as filed: Source for every carryover figure
- [ ] Capital loss, passive loss, charitable and credit carryovers: Brought forward and reconciled
- [ ] Depreciation schedules for assets still in service: Same basis and method as last year

### Source document tie-out

- [ ] Every Form W-2: Entered once, withholding matched
- [ ] Forms 1099-INT, 1099-DIV and the broker composite: Including any corrected statement
- [ ] Forms 1099-NEC and 1099-K: Reconciled to gross receipts on Schedule C; card processor 1099-Ks come at any amount
- [ ] Every Schedule K-1: With basis worksheets where losses are claimed
- [ ] Forms 1099-R and 5498: Distribution codes and rollovers checked
- [ ] Form 1098 and property tax records: For itemized deductions
- [ ] IRS wage and income transcript: Compared against the input

### Credits and positions

- [ ] Form 8867 and the interview notes: For EITC, CTC/ACTC/ODC, AOTC or head of household
- [ ] Support for judgment items: Home office, vehicle use, large deductions
- [ ] Tip and overtime statements behind the 2025 law deductions: W-2, 1099 or employer statement; FLSA overtime only; tips phase-out and SSTB employer checked
- [ ] Software diagnostics and override notes: All cleared or explained

### Signature and filing

- [ ] Signed Form 8879 received before transmission: Kept 3 years from due date or IRS received date
- [ ] Voided check or bank letter for the refund account: From the client, not from last year’s file
- [ ] Reviewer sign-off with date: All review notes cleared

Download: [PDF](https://dokutrak.com/downloads/pseo-v2/f1-tax-document-checklists/tax-return-review.pdf) · [Word](https://dokutrak.com/downloads/pseo-v2/f1-tax-document-checklists/tax-return-review.docx) · [Excel tracker](https://dokutrak.com/downloads/pseo-v2/f1-tax-document-checklists/tax-return-review.xlsx)

## Why the review needs a written checklist

A **reviewer** is the person, other than the preparer, who checks a return before it goes out and signs off on each section. Without a written list, reviews drift toward the parts the reviewer likes to check. With one, every return gets the same pass, and gaps become a document request instead of a guess.

The stakes are personal for the preparer. Under section 6694, a preparer can face a penalty when an understatement comes from a position they knew, or should have known, was unreasonable ([26 U.S.C. § 6694](https://www.law.cornell.edu/uscode/text/26/6694)). A review that records why each position holds is the evidence the firm will want if that question is ever asked.

The checklist below runs in the order a return is built. Use it as the sign-off sheet in the workpapers, one copy per return.

## Before the numbers: consent, identity, prior year

Start with the file, not the return. Section 7216 makes it a crime for a preparer to knowingly or recklessly disclose or use return information for other purposes ([26 U.S.C. § 7216](https://www.law.cornell.edu/uscode/text/26/7216)). So any use beyond preparing the return needs the client’s consent on file. Check that the engagement letter for the year is signed too.

Then check identity. Names and taxpayer numbers should match the Social Security cards on file, and each dependent’s date of birth should match the records. Next, open last year’s return. Every carryover should come forward, such as capital losses, passive losses, charitable carryovers and depreciation.

## Tie out every source document

The core of the review is the tie-out. A **tie-out** is the check that each source document was entered once, in the right place, for the right amount. Compare the input against the IRS wage and income transcript when you have one, because it lists the information returns the IRS received.

| Area | What the reviewer checks | Document to request if missing |
| --- | --- | --- |
| Wages and withholding | Each Form W-2 entered once; withholding matches | Missing W-2 or a corrected one from the employer |
| Investment income | Forms 1099-INT, 1099-DIV and 1099-B match the broker’s composite statement | Composite statement, corrected forms |
| Business income | Forms 1099-NEC and 1099-K reconciled to gross receipts | Sales records, bank statements |
| Pass-through income | Every Schedule K-1 entered, with basis support | Late or final Schedule K-1 |
| Retirement | Form 1099-R codes read correctly; rollovers matched | Rollover statement from the receiving custodian |
| Health coverage | Form 8962 matches Form 1095-A | Form 1095-A from the Marketplace |

## Credits, positions and new rules

Credits carry their own duty. For the EITC, the child tax credits, the AOTC and head of household status, Form 8867 must be completed and the interview recorded ([IRS, About Form 8867](https://www.irs.gov/forms-pubs/about-form-8867)). The reviewer checks that the notes exist, not only that the form is attached. The [Form 8867 due diligence checklist](/checklists/tax-documents/form-8867-due-diligence) lists the records by credit.

Next, read the positions. Any item that depends on judgment, such as a home office or a vehicle percentage, should have support in the file. If support is thin, ask for it before filing, or document why the position meets the standard ([26 U.S.C. § 6694](https://www.law.cornell.edu/uscode/text/26/6694)).

Watch the deductions the 2025 law added for tax years 2025 through 2028, and test each condition rather than the cap alone ([IRS, Tax deductions for working Americans and seniors](https://www.irs.gov/newsroom/one-big-beautiful-bill-act-tax-deductions-for-working-americans-and-seniors)). For tips, the cap is $25,000, it phases out above $150,000 of modified AGI or $300,000 joint, and employees of an employer in a specified service trade or business are excluded ([IRS, Tax deductions for working Americans and seniors](https://www.irs.gov/newsroom/one-big-beautiful-bill-act-tax-deductions-for-working-americans-and-seniors)). For overtime, only the premium that FLSA section 7 requires counts, so pay for an exempt employee or overtime paid under company policy alone does not ([IRS Fact Sheet FS-2026-13, qualified overtime compensation](https://www.irs.gov/pub/taxpros/fs-2026-13.pdf)).

Then match each claimed amount to a statement. For example, look for the tip or overtime figure on the Form W-2, the Form 1099 or the employer’s separate statement, and keep that copy with the review sheet.

- Practitioner standards: **Circular 230** is the set of Treasury rules for people who practice before the IRS, including due diligence and standards for return positions ([IRS, Circular 230](https://www.irs.gov/tax-professionals/circular-230-tax-professionals)).
- Software diagnostics cleared, and every override explained in a note.
- State returns: residency, income allocation and credits for tax paid to other states.

## Signature, e-file and sign-off

The last section is mechanical, and it is where avoidable errors hide. You must receive the signed Form 8879 from the taxpayer before the return is transmitted ([Form 8879](https://www.irs.gov/pub/irs-pdf/f8879.pdf)). The firm keeps it for 3 years from the return due date or the IRS received date, whichever is later ([Form 8879](https://www.irs.gov/pub/irs-pdf/f8879.pdf)).

Check the refund account against a document from the client, such as a [voided check](/documents/voided-check), not against last year’s entry. Clear every open review note, then sign and date the review sheet.

1. Confirm consent and engagement letter on file.
2. Check identity, dependents and carryovers.
3. Tie out every source document and list what is missing.
4. Review credits, due diligence notes and positions.
5. Clear diagnostics and overrides; check the state return.
6. Collect the signed Form 8879, check the bank details, and sign off.

## Questions people ask

### What should a tax return review checklist include?

Consent and identity, a tie-out of every source document, carryovers, credits and due diligence, positions and their support, state returns, and the signed Form 8879. Each section should have a sign-off.

### When must Form 8879 be signed, and how long is it kept?

The ERO must receive it signed before the return is transmitted, and keep it for 3 years from the return due date or IRS received date, whichever is later ([Form 8879](https://www.irs.gov/pub/irs-pdf/f8879.pdf)).

### What consent does a preparer need to use client return information?

Section 7216 penalizes knowingly or recklessly using or disclosing return information for anything other than return preparation, so other uses require the client’s consent ([26 U.S.C. § 7216](https://www.law.cornell.edu/uscode/text/26/7216)).

### What is the preparer penalty for an unreasonable position?

Under section 6694(a), the penalty for each return is the greater of $1,000 or 50% of the income the preparer derived from it ([26 U.S.C. § 6694](https://www.law.cornell.edu/uscode/text/26/6694)).

## Sources

- [26 U.S.C. § 6694](https://www.law.cornell.edu/uscode/text/26/6694): Preparer penalty for understatements due to unreasonable positions: the greater of $1,000 or 50% of the income derived from the return.
- [26 U.S.C. § 7216](https://www.law.cornell.edu/uscode/text/26/7216): A preparer who knowingly or recklessly discloses or uses return information for other purposes commits a misdemeanor.
- [IRS, About Form 8867](https://www.irs.gov/forms-pubs/about-form-8867): Paid preparer due diligence checklist for the EITC, CTC/ACTC/ODC, AOTC and head of household status.
- [Form 8879](https://www.irs.gov/pub/irs-pdf/f8879.pdf): The ERO must receive the signed form before transmission and keep it 3 years from the due date or IRS received date, whichever is later.
- [IRS, Circular 230](https://www.irs.gov/tax-professionals/circular-230-tax-professionals): Circular 230 sets the rules for practice before the IRS.
- [IRS, Tax deductions for working Americans and seniors](https://www.irs.gov/newsroom/one-big-beautiful-bill-act-tax-deductions-for-working-americans-and-seniors): Tips and overtime deductions apply for 2025 through 2028; tips up to $25,000, phased out above $150,000 of modified AGI ($300,000 joint), with SSTB employees and self-employed SSTB owners excluded.
- [IRS Fact Sheet FS-2026-13, qualified overtime compensation](https://www.irs.gov/pub/taxpros/fs-2026-13.pdf): Only overtime compensation required under section 7 of the FLSA qualifies; overtime not required by the FLSA is not eligible.

## More on this topic

- [Tax preparation checklist](/tools/document-checklist/tax-preparation)
- [Document checker](/tools/document-checker)
- [Engagement letter template](/blog/engagement-letter-template)
- [IRS audit checklist](/checklists/tax-documents/irs-audit)
- [Form 8867 Due Diligence Checklist](/checklists/tax-documents/form-8867-due-diligence)

## About the author

Arthur Teboul (Founder, DokuTrak) is building DokuTrak after watching professionals lose hours chasing clients for documents over email. [Arthur Teboul](/authors/arthur-teboul).

How this page was made (methodology): it is built from the primary sources listed under Sources, and every rule and figure on it links to the source it comes from. Last updated October 25, 2026. Spotted an error or a rule that changed? [Contact us](/contact).

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