IRS Form 8980 – IRS Forms, Instructions, Pubs 2026 – Partnerships audited under the Bipartisan Budget Act (BBA) centralized partnership audit regime face a unique challenge: the IRS computes an imputed underpayment (IU) at the partnership level. Fortunately, IRC Section 6225(c) allows partnerships to request modifications to lower (or sometimes eliminate) that IU before final assessment.
IRS Form 8980, Partnership Request for Modification of Imputed Underpayments Under IRC Section 6225(c) (revised December 2024), is the official IRS form used for these requests. Whether responding to a Notice of Proposed Partnership Adjustment (NOPPA) or filing an Administrative Adjustment Request (AAR), Form 8980 is the key document.
This comprehensive guide explains everything partnerships and their representatives need to know about Form 8980, including eligibility, deadlines, completion steps, allowed modifications, electronic filing rules, and supporting forms. All information is drawn directly from current IRS sources (Publication 5346, Form 8980 instructions, and official BBA pages as of February 2026).
What Is IRS Form 8980 and Why Does It Matter?
Form 8980 lets the partnership representative (PR) ask the IRS to adjust the proposed or self-reported imputed underpayment based on partner-specific facts that the standard IU calculation ignores (e.g., tax-exempt status, lower applicable tax rates, or payments already made by partners).
Key uses:
- After receiving a NOPPA (within the 270-day modification period)
- When filing a BBA Administrative Adjustment Request (AAR) that includes modifications to a self-computed IU
Important distinction: Form 8980 modifies the amount of the IU only. It does not dispute the underlying partnership adjustments—that requires a timely protest to the 30-day letter or later court petition.
Who Must File Form 8980?
- BBA partnerships (partnerships subject to the centralized audit regime for tax years beginning after 2017, or those that elected in)
- The partnership representative (PR) completes and signs the form (or a valid POA acting on behalf of the PR)
- One Form 8980 per reviewed year (file separate forms for multiple years)
When to File Form 8980: Critical Deadlines?
| Scenario | Deadline | Submission Method |
|---|---|---|
| NOPPA modification request | 270 calendar days from NOPPA mailing date (extendable via Form 8984) | Electronic only (IRS BBA Online Form Submission Service) |
| AAR with modifications | When the AAR is filed (attach Form 8980) | Same manner as the original return (paper or MeF e-file) |
| Supplemental or corrected request | Before 270-day period expires | Electronic |
Missing the 270-day window (or failing to attach Form 8980 to an AAR) generally means the modification is denied.
How to Submit Form 8980 (Electronic Filing Rules)?
All NOPPA-related Form 8980 submissions must be filed electronically through the IRS BBA Online Form Submission Service (go to IRS.gov/bbaesubmit for the multi-step TCC/PIN registration process).
Signature requirements:
- PR uses a self-selected 5-digit PIN (typed name must exactly match the TCC application)
- Supporting forms (e.g., Form 8982, 8983) require manual signatures scanned as separate “signature files”
File naming rules: Unique, meaningful names (≤50 characters), no spaces or special characters except hyphen/underscore; allowed extensions: .pdf, .docx, .xlsx, etc.
AARs: File at the same IRS campus and in the same format (paper or MeF) as the original Form 1065. Do not use the BBA electronic portal for AARs.
Step-by-Step: How to Complete Form 8980 (Rev. December 2024)?
Item A – Modification Submission Type (required)
Choose: Original, Supplemental, Corrected, Supporting Documents Only, or “Attached to AAR.”
Item B – Modifications Requested (required)
Check every box that applies. This unlocks the corresponding Part in Item E.
Item C – Allocation of Adjustments
Report all adjustments exactly as grouped in the NOPPA (or AAR computation), including reallocation, residual, creditable expenditures, and credits.
Item D – Pre-Approval for Pass-Through Entity Partners
Use when a pass-through partner wants to apply modifications to its own partners. Submit a detailed statement showing calculations and requested modifications.
Item E – Detailed Modification Parts (only complete sections you checked in Item B)
- Part I — Partner Modified Amended Return (PMAR) or Partner Alternative Procedure (PAP) → Use Form 8982
- Part II — Tax-exempt partners → Use Form 8983
- Part III — Applicable highest tax rate (e.g., 20% long-term capital gain rate)
- Part IV — Passive activity losses of publicly traded partnerships → Use Form 15028
- Part V — Modifications to the number or composition of imputed underpayments
- Part VI — Qualified investment entity (QIE) partners (RICs/REITs) → Form 976 or closing agreement
- Part VII — Partner closing agreements
- Part VIII — Foreign partners (treaty benefits or statutory exemptions) → Retain W-8 forms
- Part IX — Other modifications (with full explanation)
Item F – Signature
PR (or POA) enters PIN, name, title, date, and phone.
Allowed Modifications Under IRC Section 6225(c) and Regulations
The IRS recognizes these primary categories (Treas. Reg. §301.6225-2):
- Partner Amended Return (PMAR) or Alternative Payment (PAP)
- Tax-exempt partners (domestic or foreign tax-exempt entities)
- Lower applicable tax rates (capital gains, qualified dividends, etc., but not below the reviewed year’s statutory maximum)
- Publicly traded partnership (PTP) passive activity losses
- Specific imputed underpayments (re-grouping adjustments)
- Qualified investment entities (RICs/REITs)
- Partner closing agreements
- Foreign partner treaty reductions or statutory exemptions
- Other modifications the IRS determines appropriate
Not allowed in AARs: PMAR, PAP, or closing agreements (these are NOPPA-only).
Required Supporting Forms and Documentation
- Form 8982 – Affidavit for PMAR or PAP (manual signature file required)
- Form 8983 – Certification of Partner Tax-Exempt Status
- Form 15028 – PTP notification to specified partners
- Form 8981 – Waiver of periods (if extending deadlines)
- Form 8984 – Extension request (electronic)
- Detailed statements, allocation schedules, payment proofs, W-8 forms (retained, not attached), closing agreements, etc.
All documentation must substantiate the modification to the IRS’s satisfaction.
Common Pitfalls and Pro Tips
- Incomplete submissions → Automatic denial (especially missing ATDNR items for PAP)
- Name/TIN mismatches → Electronic rejection
- Using old form versions → Rejected
- Forgetting to attach Form 8980 to an AAR → Modification denied
- Indirect partners → Chain cannot include taxable entities unless the source partnership also modifies
- Payments → Must be full tax + penalties + interest; no refunds allowed under PAP
Pro tip: Start gathering partner data and supporting documents as soon as you receive the NOPPA. The 270-day clock is strict.
Download the Latest Forms
- Form 8980 (PDF): https://www.irs.gov/pub/irs-pdf/f8980.pdf
- Publication 5346 (Instructions): https://www.irs.gov/pub/irs-pdf/p5346.pdf
Frequently Asked Questions (FAQs)
- Can I modify an imputed underpayment after the FPA is issued?
No. Modifications are available only during the 270-day period after the NOPPA (or when filing an AAR). - Is Form 8980 required for the push-out election?
No—use Form 8988 for the Section 6226 push-out election after the FPA. - Can a partnership representative delegate signing authority?
Yes, a valid Form 2848 POA can sign using the POA’s own PIN. - What if the IRS rejects my electronic submission?
You will receive a Receipt ID and specific rejection reasons. Correct and resubmit before the deadline.
Final Advice
Form 8980 is a powerful tool to reduce or eliminate an imputed underpayment, but it demands meticulous documentation and strict compliance with electronic filing rules. Always work closely with the partnership’s tax advisor or BBA specialist.
For the most current information, visit the official IRS pages:
- About Form 8980 → irs.gov/forms-pubs/about-form-8980
- BBA Partnership Audit Process → irs.gov/businesses/partnerships/bba-partnership-audit-process
- Electronic Submission → IRS.gov/bbaesubmit
Disclaimer: This article is for informational purposes only and is not tax or legal advice. Tax rules are complex and subject to change. Consult a qualified tax professional and refer directly to the latest IRS forms and instructions before filing.
Last updated: February 2026. All references are to the December 2024 revisions of Form 8980 and Publication 5346.