Editorial Standards
How we research, review, and update this guide
Every Accountably guide is researched against primary IRS sources, reviewed by a U.S. CPA, and refreshed as guidance evolves. Read our Editorial Guidelines to see how we source, fact-check, and update our content.
A tax-exempt limited partner sits inside a BBA partnership that just drew an imputed underpayment, and on paper that partner is being asked to fund tax it would never owe. Form 8983 is how the source partnership certifies that status so the IRS can carve those amounts out of the modification request under IRC §6225(c)(3).
The scope is tighter than it looks. The form covers §168(h)(2)(A) domestic tax-exempt entities and §501(a) foreign partners, and nothing else. Treaty relief, §892 foreign governments, and §881(c) portfolio interest all belong on Form 8980, Part VIII instead. The signed certification attaches to Form 8980 and is due within 270 calendar days of the NOPPA mailing date, signed under penalties of perjury.
Key Takeaways
- What it does: Form 8983 certifies a relevant partner’s tax-exempt status under IRC §168(h)(2)(A) (domestic) or IRC §501(a) (foreign) to support a source partnership’s modification of an imputed underpayment under IRC §6225(c)(3).
- Who files it: The tax-exempt partner completes and signs Part IV; the partnership representative then submits it as a related form attached to Form 8980 via the IRS BBA partnerships portal.
- Scope of certification: Signed under penalties of perjury, the certification confirms the partner’s §168(h)(2)(A) or §501(a) tax-exempt status and that Part III Column 6 amounts are not UBTI (IRC §§512 and 513), not §514 debt-financed income, and not subject to tax under any other IRC section.
- Foreign partner scope: Only foreign partners exempt under IRC §501(a) use Form 8983. Treaty-based modifications, IRC §892 (foreign governments), and IRC §881(c) (portfolio interest) go on Form 8980, Part VIII instead.
- 270-day deadline: Form 8983 must be submitted with Form 8980 within the source partnership’s modification submission period under IRC §6225(c)(7) – 270 calendar days from the NOPPA mailing date, unless formally extended.
- SOP tip: Prepare a separate Form 8983 for each (source partnership × reviewed year) combination and retain both the completed fillable PDF and the scanned signature page in the engagement file alongside the BBA portal Receipt ID.
What Form 8983 Is and When to Use It
Form 8983 is the Certification of Partner Tax-Exempt Status for Modification Under IRC §6225(c)(3). A relevant partner in a source partnership requesting modification of an imputed underpayment completes Form 8983 to certify that, in the reviewed year, the partner is a §168(h)(2)(A) domestic tax-exempt entity or a §501(a) foreign tax-exempt partner, and that all or a portion of the partner’s distributive share of the partnership adjustment is not subject to tax.
The source partnership’s partnership representative must provide each relevant tax-exempt partner with the NOPPA adjustment information needed to complete Form 8983. The signed form is then submitted by the PR as a related form attached to Form 8980 within 270 calendar days from the NOPPA mailing date, per IRC §6225(c)(7). Failure of the source partnership to provide sufficient information may cause the IRS to deny the §6225(c)(3) modification request.
The Link Between Form 8983 and Form 8980
Form 8983 always accompanies Form 8980 (Partnership Request for Modification of Imputed Underpayments Under IRC §6225(c)). Form 8980 is the source partnership’s modification request; Form 8983 is the certification from each relevant tax-exempt partner that supports the §6225(c)(3) basis of the modification. The partnership representative collects Form 8983 from each tax-exempt partner and submits both forms electronically through the IRS BBA partnerships portal.
Who Needs to Complete Form 8983
The relevant tax-exempt partner completes and signs Form 8983. For an entity partner, that is a current authorized officer (president, vice president, treasurer, assistant treasurer, chief accounting officer, or other corporate officer such as a tax officer authorized to sign the entity’s return). For a trust, an authorized trustee signs and Form 56 must be attached. Form 8983 cannot be signed by the source partnership’s partnership representative or by an authorized representative (POA holder) of the tax-exempt partner.
How to Complete Form 8983
Form 8983 has four numbered Parts: Part I (Partner Information, Lines 1-9), Part II (Partnership Information, Lines 1-3), Part III (Summary of Tax-Exempt Partner’s Adjustments and Tax-Exempt Amounts – a six-column table), and Part IV (Tax-Exempt Partner’s Certification). Mandatory fields are outlined in red and missing any of them may cause the form to be rejected on upload.
| Section / Field | What to Complete | Practitioner Notes |
|---|---|---|
| Part I – Partner Information (Lines 1-9) | Tax-exempt partner’s full name (Line 1), TIN/EIN (Line 2), address type (Line 3), domestic address Lines 4a-4d or foreign address Lines 4a-4e, tax year ended (Line 5, MM/DD/YYYY – the “first affected year”), Line 6a (domestic IRC section) or Line 6b (foreign §501(a) Yes/No), Line 7 determination letter Yes/No with Reason Code A-F if No, Lines 8 and 9 dates. | Lines 6a and 6b are mutually exclusive – answer exactly one. If Line 7 is “No,” key a Reason Code A-F and attach the supporting statement. |
| Part II – Partnership Information (Lines 1-3) | Source partnership name (Line 1), source partnership TIN (Line 2), and reviewed year end / AAR year end (Line 3, MM/DD/YYYY). Enter the source partnership’s 10-digit audit control number from the NOPPA – leave blank if Form 8983 is being filed with an AAR. | Each Form 8983 covers exactly one source partnership and one reviewed year. Multi-year or multi-source-partnership modifications require multiple Form 8983s. |
| Part III – Adjustments and Tax-Exempt Amounts (6-column table) | Column (1) Description of Adjustment; Column (2) Net positive reallocation/residual grouping (split General/Specific); Column (3) Net positive creditable expenditure decreases; Column (4) Credit adjustments (positive and negative); Column (5) Other net negative adjustments; Column (6) Tax-exempt portion of Columns (2)-(4). | Pair every Column 5 entry with a zero in Column 2 on the same row. Exclude UBTI (IRC §§512 and 513) and §514 debt-financed income from Column 6. The table prompts a “See attached” overflow row after 100 adjustment rows. |
| Part IV – Tax-Exempt Partner’s Certification | Signer’s name and title, signature, date (MM/DD/YYYY), and daytime telephone number. The certification states that the partner is a §168(h)(2)(A) domestic or §501(a) foreign tax-exempt partner, and that the Column 6 amounts are not UBTI, not §514 debt-financed income, and not subject to tax under any other IRC section. | Signed under penalties of perjury. The PR cannot sign. An authorized representative (POA holder) cannot sign. For trusts, the authorized trustee signs and Form 56 must be attached. |
| Electronic submission | Upload the completed fillable PDF AND a separately scanned PDF of the manually signed Part IV signature page via the IRS BBA partnerships portal (irs.gov/bbapartnerships), attached to Form 8980. | Filenames: A-Z, 0-9, hyphens, underscores only; 50 characters max including extension. Allowed extensions: .doc, .docx, .pdf, .xls, .xlsx, .zip. Capture the Receipt ID Number on successful submission. |
Where to Submit Form 8983
Form 8983 must be submitted electronically together with Form 8980 via the IRS BBA partnerships portal at irs.gov/bbapartnerships, pursuant to IRC §6241(10). Only the latest fillable version downloaded from www.irs.gov/forms-instructions is accepted; earlier saved versions are rejected. On successful submission the portal displays a Receipt ID Number – print and retain the Receipt ID page, as it is required to check submission status.
The §501(a) vs Treaty / §892 / §881(c) Split
Form 8983 only covers a narrow slice of foreign-partner exemptions. Only foreign partners exempt under IRC §501(a) may certify on Form 8983, and Line 6b “Yes” requires an attached statement specifying the basis (§401(a) qualified trust, §501(d) religious or apostolic, or the specific §501(c) subsection other than §501(c)(3), with a determination letter or U.S. counsel opinion identified).
- Treaty-based reduced rate or exemption – not Form 8983; the PR uses Form 8980, Item E, Part VIII.
- Foreign-government or international-organization income excluded under IRC §892 – not Form 8983; PR uses Form 8980, Part VIII.
- Portfolio interest exempt under IRC §881(c) – not Form 8983; PR uses Form 8980, Part VIII.
- Foreign §501(a)-exempt organization – Form 8983 (Line 6b “Yes” with attached statement).
Triage every foreign partner against this list before opening Form 8983; routing a treaty-exempt partner onto Form 8983 is a top rejection cause.
Filing Timing, Requirements, and Consequences
Form 8983 is an event-driven form tied to the source partnership’s §6225(c)(3) modification request. There is no annual due date. The deadline runs 270 calendar days from the NOPPA mailing date under IRC §6225(c)(7), unless the modification submission period has been formally extended.
| Event | Timing | Consequence of Non-Compliance |
|---|---|---|
| Modification request under IRC §6225(c)(3) | Submit Form 8983 with Form 8980 within 270 calendar days from the NOPPA mailing date under IRC §6225(c)(7) | If the source partnership fails to provide sufficient information for the partner to complete Form 8983, the IRS may deny the §6225(c)(3) modification request |
| Multi-year or multi-source modification | File a separate Form 8983 for each (source partnership × reviewed year) combination | Using one Form 8983 to cover multiple reviewed years undermines the modification for years not properly certified |
| False certification under Part IV | Part IV is signed under penalties of perjury at the time of submission | The signer certifies the partner is §168(h)(2)(A) or §501(a) tax-exempt and that Column 6 excludes UBTI and §514 debt-financed income. A false certification carries perjury exposure. |
| Missing scanned signature page or fillable PDF | Upload BOTH the completed fillable form AND a separately scanned PDF of the manually signed Part IV page | Uploading only the fillable PDF is treated as incomplete and may trigger rejection on the BBA portal |
Form 8983 in the Broader BBA Audit Infrastructure
Form 8983 is one piece of a larger system of forms that together govern BBA partnership audit administration. Practitioners advising partnership clients through audits need to understand how these pieces connect.
The Form 8980 – Form 8983 Pairing
Form 8980 is the source partnership’s modification request under IRC §6225(c). Form 8983 is the certification from each relevant tax-exempt partner that supports the §6225(c)(3) basis of the modification. Both forms are uploaded together through the BBA partnerships portal by the partnership representative. Form 8983 has no standalone filing path – it is always submitted as a related form to Form 8980. Filing Form 8980 without the supporting Form 8983s undermines the §6225(c)(3) modification basis.
CPA Firms Supporting Tax-Exempt Partners
CPA firms are frequently engaged on the partner side – preparing Form 8983 for a tax-exempt LP, pension trust, or §501(c) organization that received NOPPA-adjustment information from a source partnership. The firm prepares the form and routes Part IV to the partner’s authorized officer (or trustee, for a trust) for signature; the CPA cannot sign as an authorized representative under any POA.
From my side of the desk, the lift is in three places: confirming the partner qualifies under §168(h)(2)(A) or §501(a) (and rerouting to Form 8980 Part VIII if the basis is treaty, §892, or §881(c)); building Part III Column 6 off the partner’s UBTI workpaper so §§512, 513, and 514 amounts stay out; and packaging the scanned signature page with the fillable PDF for the PR’s upload to the BBA portal.
One Form Per Source Partnership × Reviewed Year
Each Form 8983 covers exactly one source partnership and one reviewed year. If the partner is a tax-exempt partner of multiple source partnerships for the same taxable year, a separate Form 8983 is required for each. If a single source partnership requests modification across multiple reviewed years and the partner qualifies in more than one of those years, a separate Form 8983 is required for each reviewed year. Drive the form count off the NOPPA matrix (source partnerships × reviewed years × tax-exempt partners), not off partner headcount alone.
Practical Guidance for CPAs Supporting §6225(c)(3) Modifications
Whether you are on the PR side packaging Form 8980 + every partner’s Form 8983, or on the partner side preparing a single Form 8983 for a tax-exempt LP, the work has three pressure points: NOPPA-data intake, Part III column placement, and the manually signed Part IV signature page. Here is how to handle each before the 270-day clock runs out.
NOPPA Intake and the Audit Control Number
Start every engagement at the NOPPA. Capture the source partnership’s 10-digit audit control number, the reviewed year, and the NOPPA mailing date the day the partner receives the package. The audit control number goes on Form 8983 (leave it blank only if Form 8983/Form 8980 is being attached to an AAR). The mailing date drives the 270-day §6225(c)(7) deadline. Without this trio captured at intake, every downstream step runs without a clock.
Part III Column Discipline
Part III is where most preparers stumble. Negative credit adjustments belong in Column 4 (which holds both positive and negative credit adjustments), not Column 5. Column 5 captures all other net negative adjustments – including net increases to creditable expenditures – and every Column 5 entry must be paired with a zero in Column 2 on the same row. Column 6 holds only the tax-exempt portion of Columns (2)-(4); UBTI under IRC §§512 and 513 and debt-financed income under IRC §514 stay out.
Determination Letter Validation Before Line 7 “Yes”
Checking Line 7 “Yes” relies on a determination letter that is still in effect. If the letter has been revoked, automatically revoked without retroactive reinstatement, or the organization’s exempt status has been suspended under IRC §501(p) (terrorist organizations), the Line 7 “Yes” is invalid even with Lines 8 and 9 keyed correctly. When status cannot be confirmed, key Line 7 “No,” enter a Reason Code A-F, and attach the explanation statement – all required fields.
Common Mistakes That Slow Things Down
Most Form 8983 rejections we see trace back to the same handful of certification slip-ups, and they tend to surface late – usually when the source partnership's 270-day modification window is already half spent. Each one gives the IRS grounds to deny the modification under IRC §6225(c)(3), so they belong on the preparer's intake checklist, not the reviewer's catch list.
Practical Checklists You Can Reuse
Three checklists below cover the three pressure points in a Form 8983 cycle: NOPPA-day intake, Part III adjustment-grid construction, and the electronic submission pack. Each list is copy-paste ready into a firm SOP.
NOPPA-day intake packet
- Capture the 10-digit audit control number from the NOPPA and key it to the partner file.
- Confirm the source partnership name and TIN for Part II Lines 1 and 2.
- Set the Part II Line 3 reviewed-year end and the Part I Line 5 partner first-affected-year end in MM/DD/YYYY format.
- Confirm the partner qualifies under IRC §168(h)(2)(A) (domestic) or IRC §501(a) (foreign); reroute the engagement to Form 8980 Part VIII if foreign and treaty- or §892-based.
- Calendar the 270-day IRC §6225(c)(7) deadline from the NOPPA mailing date, plus a 30-day internal buffer for review and partner sign-off.
- For each tax-exempt partner, log whether Line 7 will be 'Yes' (determination letter on file) or 'No' (Reason Code A through F with attached statement).
Part III adjustment-grid prep
- Pull the full partnership adjustment schedule from the NOPPA and bucket each adjustment by description for Column 1.
- Post net positive reallocation and residual grouping adjustments to Column 2, split General vs Specific subcolumns.
- Post net positive creditable expenditure decreases to Column 3.
- Post credit adjustments (both positive and negative) to Column 4, split General vs Specific.
- Post all other net negative adjustments (including net increases to creditable expenditures) to Column 5; pair every Column 5 row with a zero in Column 2.
- Compute Column 6 tax-exempt amounts from the partner's UBTI workpaper, excluding IRC §§512 and 513 UBTI and §514 debt-financed income.
- If the adjustment row count exceeds 100, prepare the 'See attached' overflow statement before the Part III table locks.
Electronic submission pack
- Download the current fillable Form 8983 from IRS.gov before completion; reject any cached prior-version PDF.
- Fill every red-outlined mandatory field; missing-field pop-up warnings cause upload rejection.
- Obtain partner signature on Part IV (an authorized officer for an entity, an authorized trustee plus Form 56 for a trust); the PR cannot sign on the partner's behalf.
- Scan the signed Part IV page as a separate PDF in addition to the fillable form.
- Name each file with a unique meaningful name using only A-Z, 0-9, hyphens, and underscores, within the 50-character filename limit including extension.
- Upload both PDFs together through the IRS BBA partnerships portal under the parent Form 8980 submission.
- Capture the Receipt ID Number page on upload success; the Receipt ID is required for any later status check.
Keep 8983 Season From Stalling
BBA partnership audits run on a fixed clock. The IRS mails a Notice of Proposed Partnership Adjustment (NOPPA), and the source partnership has 270 calendar days under IRC §6225(c)(7) to assemble a Form 8983 from every relevant tax-exempt partner and submit them with Form 8980 (per IRS Form 8983 Instructions, Rev. October 2020). For partnerships with feeder funds, charity LPs, or pension-trust investors, that window starts compressed and tightens fast.
What stalls the cycle is rarely the math. It is the chase: getting an officer-signed signature page back from each partner, confirming determination letters are still in effect, and rebuilding the Part III six-column adjustment grid when the NOPPA lands with hundreds of allocated line items. By the time those pieces arrive, the 100-row Part III ceiling has often already triggered an overflow attachment, and the small mechanical rules – audit control number, ZIP-code formatting, filename character set – become the difference between a clean upload and a rejected one.
- Build a NOPPA-day intake packet that pins the 10-digit audit control number, the reviewed year, and the 270-day calendar trigger before any Form 8983 leaves the preparer's queue.
- Run Part I Lines 6a and 6b as a forced-choice gate (domestic IRC section under 6a; §501(a) Yes or No under 6b) so the dual-status error is caught at intake, not at upload.
- Validate every Line 7 'Yes' against the partner's current determination letter status (not revoked, not suspended under §501(p)) before Lines 8 and 9 are keyed.
- Separate negative credit adjustments (Column 4) from net negative adjustments (Column 5) at intake, and pair every Column 5 entry with a zero in Column 2 on the same row.
- Stage two PDFs per partner (completed fillable form and separately scanned signature page) and validate filenames against the 50-character A-Z, 0-9, hyphen, underscore rule before upload.
That entire intake-to-upload cycle sits inside our tax delivery team: preparers staff the NOPPA-day pack, seniors clear Part III column placement, and the final reviewer holds the Receipt ID retention step. The 270-day clock keeps moving regardless of staffing capacity; the discipline is what keeps it from running out before the modification ships.
FAQs
What is Form 8983 used for?
Form 8983 is the Certification of Partner Tax-Exempt Status for Modification Under IRC §6225(c)(3). It is completed by a relevant tax-exempt partner to certify that the partner is a domestic tax-exempt entity within the meaning of IRC §168(h)(2)(A) or a foreign partner exempt from tax under IRC §501(a), and that all or a portion of the partner’s distributive share of the source partnership’s adjustment is not subject to tax. The signed form is provided to the partnership representative, who submits it as a related form with Form 8980.
When is Form 8983 filed?
Form 8983 must be submitted electronically with Form 8980 within the source partnership’s modification submission period under IRC §6225(c)(7) – 270 calendar days from the date the partnership’s notice of proposed partnership adjustment (NOPPA) is mailed, unless the period has been formally extended. It is not an annual filing.
Who must sign Form 8983?
The tax-exempt partner must sign Part IV. For an entity, a current authorized officer (president, vice president, treasurer, assistant treasurer, chief accounting officer, or other authorized corporate officer such as a tax officer) signs. For a trust, an authorized trustee signs and Form 56 must be attached. Form 8983 cannot be signed by the source partnership’s partnership representative or by an authorized representative (POA holder) of the tax-exempt partner.
Can a foreign partner claiming a treaty exemption file Form 8983?
No. Form 8983 only covers foreign partners exempt from tax under IRC §501(a). Foreign partners claiming exemption under a tax treaty, IRC §892 (foreign governments), or IRC §881(c) (portfolio interest) must not use Form 8983 – those modifications are requested by the partnership representative on Form 8980, Part VIII.
Can one Form 8983 cover multiple reviewed years?
No. Each Form 8983 pertains to a single source partnership and a single reviewed year. If a modification request spans multiple reviewed years, or if the partner is a tax-exempt partner of more than one source partnership for the same taxable year, a separate Form 8983 must be completed for each source partnership and reviewed year combination.