The room went quiet. Not because they could not compute the adjustments, but because the workpapers, narratives, and UTP cross‑references were scattered. Once we put a disciplined disclosure kit in place, the anxiety lifted and the team hit the deadline with clean review notes.
If you are an LCC or LPC taxpayer, Form 15307 is that kit. Used correctly, it gives you qualified amended return treatment on disclosed items and shields you from specific accuracy‑related penalties. The trick is timing, completeness, and structure, not heroics. Rev. Proc. 2022‑39 made the rules clear, and the IRS has kept them front and center in the LCC manual.
Form 15307 is a targeted post‑filing disclosure. For eligible large corporate and partnership taxpayers, a timely, complete, perjury‑signed submission is treated as a qualified amended return for disclosed items, which can block negligence and substantial understatement penalties.
Key Takeaways
- Form 15307 is a post‑filing disclosure used at the start of an LCC or LPC exam. When you file it on time and complete, it is treated as a qualified amended return for the disclosed items.
- The protection targets IRC §6662(b)(1) negligence and §6662(b)(2) substantial understatement penalties on properly disclosed items.
- Eligibility follows the four‑of‑five rule under LCC or LPC, and the procedure applies to exams that begin on or after November 16, 2022.
- You must furnish Form 15307 within 30 days of the IRS written request, unless the exam team agrees in writing to a later date.
- Each issue must be separately stated with a precise computation, a short controversy narrative, and cross‑references to Schedule UTP or Forms 8275 or 8275‑R where relevant.
What Form 15307 Is and why it matters
Form 15307 is the IRS’s standardized way for certain large corporate and large partnership taxpayers to disclose items right after an exam opens. Instead of filing a traditional amended return in the middle of an audit, you present your adjustments and explanations on this form. If you are eligible and you meet the content and timing rules, the IRS treats those items as if they were on a qualified amended return for penalty purposes. That means you can avoid two accuracy‑related penalties on the disclosed items, the negligence penalty and the substantial understatement penalty.
This replaced the old Rev. Proc. 94‑69 approach that many continuous‑audit taxpayers used for decades. Today, the LCC program has replaced CIC for corporations, and the LPC program covers large partnerships. The IRS has updated the Internal Revenue Manual to tie Form 15307 directly to the program, which confirms practical expectations in current exams.
Quick note on timing and versioning
- Rev. Proc. 2022‑39 is effective for examinations that begin on or after November 16, 2022.
- The IRS’s LCC manual was last revised on December 19, 2024 and cites Form 15307 and Rev. Proc. 2022‑39. The LCC public page reflects updates as of December 2, 2025. Use those as your baseline.
Compliance note, not tax advice: This guide reflects IRS sources as of December 17, 2025. Always confirm facts with your examiner and current IRS instructions before you file.
Who this article is for
- Corporate tax leaders and controllers in LCC audits
- Partnership tax leaders in LPC audits
- CPA and law firm teams supporting LCC/LPC clients who must assemble complete Form 15307 packages on tight deadlines
I will speak directly to you, keep the language clear, and add a few real‑world practices we use when helping teams pull a complete disclosure together in under 30 days. Where it helps, I will reference the IRS sources so your team can show chapter and verse to an exam team.
Eligibility, in plain English
The four‑of‑five rule
You qualify only if the IRS first contacts you about an examination under the LCC or LPC program and your returns have been examined under that same program, or a successor, for at least four of the five prior taxable years. Corporations look to LCC or its CIC predecessor. Partnerships look to LPC only for the four‑of‑five test.
Two practical implications come up often:
- For corporate taxpayers with a long CIC and LCC history, eligibility tends to be straightforward.
- For partnerships, LPC began with 2019 returns, so some calendar‑year partnerships did not meet four‑of‑five until later cycles. Check your history and get written confirmation from the exam team.
What if you are not eligible
If you are not eligible, you still have options. You can file a traditional qualified amended return under Treas. Reg. §1.6664‑2(c)(3), or you can adequately disclose on Form 8275, Form 8275‑R, or Schedule UTP filed with your return. These routes remain available and are described directly in Rev. Proc. 2022‑39.
What counts as a timely submission
The 30‑day clock starts when the IRS issues a written request for Form 15307 as part of your opening exam package. You must furnish a complete, perjury‑signed form within those 30 days unless the examiner agrees in writing to extend the date. Treat this like a statute control date, track it in your plan, and keep a copy of the written extension if you get one.
If the IRS deems a disclosure inadequate, they will say so in writing. There is no automatic protection for incomplete or inadequate submissions, so cure issues quickly and in writing.
What must be on the form
Rev. Proc. 2022‑39 and the form itself require you to:
- State each item separately, with enough detail to identify the item, its amount, and the nature of the controversy or potential controversy.
- Include a computation of the increase or decrease in taxable income, or a computation of the change in credits, for each item.
- Sign under penalties of perjury by an authorized person.
- Attach or explicitly cross‑reference related disclosures, like Schedule UTP, Form 8275, or 8275‑R.
- Do not net unrelated items, follow the form’s guidance on netting.
One more nuance that exam teams watch closely, disclosures are meant for errors and omissions that were not known when you filed the return. If you knew about the position at filing time, that belongs on Form 8275 or 8275‑R with the original return, not on a post‑filing disclosure.
Why this matters for penalty protection
When you tick all the boxes, a properly completed Form 15307 is treated as a qualified amended return for the disclosed items. That can block two penalties on those items, the negligence penalty under §6662(b)(1) and the substantial understatement penalty under §6662(b)(2). This is straight from the revenue procedure and echoed in the LCC manual.
If the team agrees with your additional tax for a disclosed item, it is treated as shown on a qualified amended return. If the team does not agree, the item moves through normal deficiency or BBA partnership procedures, and you will still need a reasonable basis to reduce substantial understatement exposure.
The 30‑day sprint, step by step
Here is a simple, field‑tested plan to hit the deadline without chaos.
Day 0 to 3, set your structure
- Confirm eligibility with the exam team in writing and calendar the due date.
- Appoint a disclosure lead and a reviewer, keep partner time focused on review, not assembly.
- Spin up a shared checklist and an index for issues, tie each issue to a workpaper folder and return page line.
- Retrieve prior UTPs and any 8275s for cross‑references.
Day 4 to 14, build the disclosure schedules
- For each issue, draft a one‑paragraph controversy narrative, then a precise computation that shows the delta in taxable income or credits.
- Cite the return page and line. If the issue affects credits, compute the credit impact separately.
- Add exhibits that let a reviewer reperform your math in minutes.
- Do not net unrelated items. Keep each adjustment stand‑alone unless the form allows a specific netting treatment.
Day 15 to 22, run the internal review
- Use a two‑layer review, preparer to senior to quality.
- Validate the perjury signature path and authority.
- Reconcile totals to your GL tie‑outs or partnership capital roll‑forward, then freeze versions.
- Prepare a short cover email to the exam team that lists issues and references your attachments.
Day 23 to 28, examiner readiness
- Preempt common questions by including a short bridge from facts to computation for each item.
- For favorable items that reduce tax, include enough detail to function as an informal refund claim. That means you are specific about the item, its amount, and provide the computation and supporting facts.
Day 29 to 30, file and confirm
- Deliver through the channel your team and the IRS agreed to, then confirm receipt.
- Keep a dated copy of everything you sent and the confirmation.
Signature and completeness, the non‑negotiables
A qualified amended return treatment turns on two things, timing and a complete, perjury‑signed form. The signer must be authorized, the schedules must be complete, and the cross‑references must be clear. An unsigned or late form is usually fatal to penalty protection, unless you have a written extension and you meet all other requirements.
What to include in each issue packet
- A short issue statement in plain language
- A two to four sentence controversy narrative
- A return page and line reference
- A computation schedule that ties to books or workpapers
- A list of exhibits and citations
- A cross‑reference to any related UTP or 8275 disclosure
- A clear conclusion about whether tax increases or decreases on that item
Pro tip, keep every computation reperformable by someone who has never seen the file. If a reviewer cannot reperform it in under five minutes, simplify the schedule or add a bridge.
Required disclosure content and supporting documentation
Think of Form 15307 as a packet of mini files, one for each issue. Each file should stand on its own and be easy to reperform. Here is the standard that exam teams expect.
- State the item clearly. Identify the return page and line, the legal issue, the period, and whether it is timing or permanent.
- Quantify the impact. Show the exact increase or decrease to taxable income, or the change in credits.
- Add a short controversy story. Two to four sentences that connect facts to the tax law and explain why the item matters.
- Cross‑reference prior disclosures. If you filed Schedule UTP, Form 8275, or 8275‑R, call them out by form, year, and line, and attach copies if needed.
- Give the math. Include worksheets so the IRS can reperform your numbers quickly.
- Sign under penalties of perjury. Use an authorized signer and confirm authority in writing.
A clean structure you can follow
- Issue statement, written in plain English
- Facts and controversy, three or four sentences
- Computation, step by step with ties to workpapers
- Return page and line, plus any schedules
- Prior disclosure cross‑references
- Conclusion, increase or decrease, with precise amounts
Reviewer rule of thumb, if someone who has never seen the file cannot reperform the computation in five minutes, improve the schedule or add a brief bridge explaining each step.
Treatment of favorable versus unfavorable adjustments
Favorable and unfavorable items live by different rules. Handle them with the right framing.
- Unfavorable items, those that increase tax, can receive qualified amended return treatment if you are eligible and timely. This can block negligence and substantial understatement penalties on those disclosed items.
- Favorable items, those that decrease tax, can double as informal refund claims if you give enough detail. Identify the item and law, show the exact amount and where it sits on the return, and attach support. Thin narratives or missing worksheets can sink refund claim treatment.
Quick comparison
| Item type | Goal | What to include | Common miss |
| Unfavorable, increases tax | Penalty protection on §6662(b)(1) and §6662(b)(2) | Clear itemization, computation, controversy narrative, perjury signature | Incomplete computation or unsigned form |
| Favorable, reduces tax | Informal refund claim treatment | Exact amount, legal basis, facts, computation, return line, exhibits | Vague description without math or support |
Interaction with Schedule UTP, Forms 8275 and 8275‑R
Prior disclosures help, but they do not replace Form 15307. You still need a complete 15307 package.
- Identify each prior disclosure by year and line, and attach it or provide the exact citation.
- Bridge any gaps. If UTP captured the issue but did not include a computation, add it here.
- Confirm timeliness. Prior disclosures do not extend the 30‑day Form 15307 deadline.
Cross‑reference template
- “See Schedule UTP, 2023, Part II, Issue 2, transfer pricing services fee, and Form 8275‑R filed with the 2023 return. This Form 15307 adds the computation and facts that were not included in the UTP narrative.”
Limits, exclusions, and common pitfalls
Form 15307 has bright lines you should respect.
- Eligibility, you must be in LCC or LPC with the four‑of‑five history at the time of first IRS contact.
- Timing, furnish a complete and signed form within 30 days of the written request, or obtain a written extension.
- Completeness, missing signature, missing computations, or vague narratives can void protection.
- Exclusions, certain items sit outside the scope, for example a foreign tax redetermination or a §6226 push‑out.
- Netting, do not net unrelated items unless the form allows it.
- Evidence, rushed workpapers lead to rework and cure letters. Keep version control and an index.
If the IRS flags inadequacy, respond in writing within the cure period. Fix content gaps, do not argue about form when you can solve with clear facts and math.
What, how, wow, a simple model
- What, Form 15307 is a targeted post‑filing disclosure for LCC and LPC exams that can secure qualified amended return treatment for disclosed items.
- How, submit a complete, perjury‑signed form within 30 days of the written request, with separate issues, precise computations, and cross‑references.
- Wow, use a production‑grade kit, issue templates, version control, and two‑layer review so your partner time stays on strategy and risk, not on assembly and formatting.
The 30‑day action plan you can reuse each cycle
Here is a repeatable plan you can run every time an exam opens.
Week 1, set the guardrails
- Confirm eligibility and the due date with the exam team, in writing.
- Name a disclosure lead, a quality reviewer, and an executive signer.
- Build an issue index that links each item to a return line and a workpaper folder.
- Retrieve UTPs, 8275s, and 8275‑Rs for the year.
- Draft a cover summary that lists each disclosure item, with page and line references.
Week 2, draft the issue packets
- Write short narratives, then build the math. Put the math in front of the narrative for reviewer speed.
- Label exhibits so the path is obvious, for example “Exhibit B, 2023 AP aging tie‑out, page 3.”
- Freeze versions daily and keep a change log.
Week 3, review and sign
- Run preparer to senior to quality.
- Confirm that the signer has authority and is available.
- Assemble the package and test a cold reperform, have a reviewer reperform two items without help.
- File through the agreed channel and get written receipt.
A ready‑to‑use issue template
Copy this structure into your checklist. It saves reviewer time and keeps your story tight.
- Issue title, short and specific
- Return page and line
- Facts, three or four sentences
- Law and position, keep it tight, cite primary sources if needed
- Computation, step by step, with ties to GL and schedules
- Prior disclosures, UTP and 8275 references
- Conclusion, increase or decrease, and the exact amount
- Exhibits index
Keep your tone practical and clear. Write like you are briefing a reviewer who has 10 minutes, not like you are drafting a memo for court.
Common questions from exam teams
- How did you compute the amount and where can we reperform it
- What changed since filing that led to this disclosure
- Did you disclose a related item on UTP or an 8275, and if so, where
- Does the item affect credits, NOLs, or state filings, and how did you map those effects
A short, real‑world example
You identify a vendor rebate booked to other income in December that should have been deferred. The fix increases taxable income by 2.1 million. Your packet includes a one‑page bridge from the contract language to the accounting entry and tax law, then a simple worksheet that traces the 2.1 million from GL to return. You cross‑reference a UTP note from the original return that flagged the contract but did not include a computation. The reviewer reperforms the math in three minutes and signs off.
Where disciplined offshore help fits, without the chaos
You might not need outside help if your internal team already runs like clockwork. If you do need extra hands, treat offshore as operations, not staffing. At Accountably, we plug trained teams into your workflow, inside your systems, with SOPs, naming conventions, and multi‑layer review. That reduces rework and shortens partner review time, which matters when you only have 30 days. We keep the file structure and workpaper standards consistent so your Form 15307 packets stay clean, signed, and on time. Use this only if it truly adds control and speed for your team.
FAQs
What is Form 15307 in one sentence
It is a post‑filing disclosure that eligible LCC and LPC taxpayers furnish within 30 days of an IRS written request, and when it is complete and perjury‑signed, the disclosed items can be treated like a qualified amended return for specified penalty protection.
Does Form 15307 replace Rev. Proc. 94‑69
Yes for eligible LCC and LPC exams. Rev. Proc. 2022‑39 superseded the old process. If you are not eligible, use a traditional qualified amended return or disclose on Form 8275, 8275‑R, or Schedule UTP.
Who signs Form 15307
An authorized person for the taxpayer, for example a corporate officer or authorized partner. Confirm authority in writing and include the full perjury statement.
What if I miss the 30‑day window
Ask the exam team for a written extension before the deadline. Without a written extension, late or incomplete submissions can lose qualified amended return treatment and penalty protection.
Can partnerships use Form 15307
Yes, if they are in the LPC program and meet the four‑of‑five history on the date of first IRS contact. Partnerships outside LPC should consider a traditional qualified amended return or other disclosure routes.
How detailed must my computation be
Specific enough for a reviewer to reperform it quickly. Show the return line, the step‑by‑step math, and tie the amounts to workpapers or the GL. Avoid summary statements without numbers.
Do favorable items get the same treatment as unfavorable ones
No. Unfavorable items can receive qualified amended return treatment for penalty purposes. Favorable items can function as informal refund claims if you include enough detail, facts, and math.
How do Schedule UTP and Forms 8275 and 8275‑R fit in
They support, but they do not replace, Form 15307. Identify each prior disclosure and bridge any missing facts or computations in your 15307 packet.
What are the biggest pitfalls
Unsigned forms, vague narratives, missing computations, missing cross‑references, and last‑minute assembly. Build a checklist and use two‑layer review to avoid these.
Quick checklist you can print
- Confirm LCC or LPC status and the four‑of‑five history
- Calendar the 30‑day due date, ask for a written extension if needed
- Assign roles, disclosure lead, quality reviewer, signer
- Build the issue index and map each item to a return line
- Draft narratives and computations, then run internal review
- Cross‑reference UTP and 8275s, attach exhibits
- Verify the perjury signature and authority
- File, then confirm receipt in writing
Final thoughts and a simple next step
Form 15307 rewards teams that value structure. When you control versioning, keep the math simple, and sign on time, you turn a stressful 30‑day sprint into a routine process that protects your position. If you want a second set of hands to keep files disciplined during peak work, our team at Accountably can plug into your workflow, follow your templates, and help you ship cleaner 15307 packets without slowing partner review. If your team is already humming, use the checklists in this guide and you will be in great shape.