Form 1065-X Checklist: Tax Year 2017
Why 2017 Form 1065-X Is Distinct
For tax year 2017, Form 1065-X follows TEFRA consolidated partnership audit procedures (applicable to partnerships beginning before 2018). The centralized partnership audit regime, as established under the Bipartisan Budget Act, starts in 2018; therefore, 2017 filings under TEFRA require a Tax Matters Partner (TMP) designation and the consolidated audit treatment of all partnership-related items across all partners in a unified proceeding.
Year-Specific Programs Applicable to 2017
Partnerships for 2017 under Form 1065-X are not subject to Economic Impact Payment reconciliation, Alternative Minimum Tax adjustments, or Section 199 domestic production activity deduction. Partnerships filing for 2017 remain subject to TEFRA partnership procedures unless they elected into the Bipartisan Budget Act framework for an earlier tax year beginning after November 2, 2015.
Ten-Step Compliance Checklist for 2017 Form 1065-X
Step 1: Determine TEFRA Status
Answer Form 1065-X Part I, Section 1, items A through D to establish whether the partnership is subject to consolidated audit proceedings (TEFRA proceedings) under sections 6221–6234. A collaboration with ten or fewer partners, all U.S. citizens or resident aliens (or C corporations or estates of deceased partners), and without electing TEFRA treatment, is not subject to TEFRA and cannot file an AAR under 2017 rules.
Step 2: Confirm Filing Method and Form Selection
For paper filing of amended returns or AARs for 2017 tax-year returns, use Form 1065-X. Do not use Form 1065-X for electronic filing. Attach Form 1065 with the “Amended Return” box checked if filing electronically; use Form 1065-X only for paper submissions.
Step 3: Complete Part I Determination
Check exactly one box in Part I: TEFRA AAR, NonTEFRA (Amended Return or AAR), or ELP/REMIC AAR. The 2017 form does not contain a separate BBA AAR box because the centralized partnership audit regime applies only to tax years beginning after December 31, 2017.
Step 4: Gather and Label Original Return Documentation
Collect the original Form 1065 (or Form 1065-B or 1066), all Schedules K-1 issued to partners for 2017, prior-year balance sheets, and all supporting schedules. Write “Copy Only—Do Not Process” at the top of any previously filed forms or schedules attached to Form 1065-X as reference material.
Step 5: Complete Part II or Part III with Amended Items
Part II (for partnerships and electing large partnerships): Enter the line number, original amount from Schedule K column (a), net change increase or decrease in column (b), and corrected amount in column ©.
Part III (for ELPs and REMICs only): Describe the item being amended or adjusted in column (a), enter original amount in column (b), enter net change in column ©, and corrected amount in column (d).
Step 6: Attach Required Schedules K-1
Prepare and attach amended Schedules K-1 for any partner whose distributive share has changed. For 2017, the K-1 format includes box 11 for other income (loss), box 13 for other deductions (with codes A through W), and box 20 for other information (with codes A through AH). Refrain from attaching amended K-1s if filing a TEFRA AAR as the Tax Matters Partner; instead, kindly inform partners receiving amended K-1s that an AAR has been filed.
Step 7: Explain All Line-Item Changes in Part III (or Part V)
For each line being changed, enter the line number and provide a detailed reason. Show all computations. If the adjustment involves an allocation change among partners, state the box number and code used to report the item on Schedule K-1 and reference the applicable limitation or rule. For non-TEFRA partnerships, explanations are provided in Part III; for other entity types, refer to Part V.
Step 8: Support Adjustments with Attachments
If a corrected amount requires supporting schedules, forms, or statements (for example, Form 4797 for gain/loss, Schedule D for capital gains, Form 4562 for depreciation), attach the appropriate schedule to Form 1065-X. Include the partnership name and EIN on all attachments. Provide sufficient detail to justify each adjustment.
Step 9: Designate Tax Matters Partner and Obtain Signature
For TEFRA partnerships: The Tax Matters Partner (a general partner who is a U.S. person) must sign Form 1065-X. For non-TEFRA partnerships and non-TEFRA AARs, any partner or LLC member is eligible to sign the form. Sign the return in the space provided, include the date, print or type the signatory’s name and title, and if a receiver, trustee, or assignee is acting for the partnership, sign in that capacity and attach court authorization.
Step 10: File with the Correct Service Center within three years
Mail Form 1065-X to the IRS service center where the original Form 1065 was filed. File within three years after the later of (1) the date on which the partnership return was filed, or (2) the last day for filing the partnership return (excluding extensions). For a TEFRA partnership AAR, file before the notice of final partnership administrative adjustment is mailed to the Tax Matters Partner.
Line Changes and Redesigns for 2017 Form 1065-X
Schedule K-1, Line 13 (Other Deductions): For the 2017 Schedule K-1 (Form 1065), Line 13 “Other deductions” uses a single-line structure with multiple codes (A through W) to distinguish item types, including: Code A (Cash contributions 60%), Code B (Cash contributions 30%), Code C (Noncash contributions 50%), Code D (Noncash contributions 30%), Code E (Capital gain property to 50% organization 30%), Code F (Capital gain property 20%), Code G (Contributions 100%), Code H (Investment interest expense), Code I (Deductions—royalty income), and Code J (Section 59(e)(2) expenditures).
The prior year's wording did not clearly distinguish between cash and non-cash contributions within the reporting structure. The 2017 instruction redesign clarifies the treatment of partnership contributions and deductions by type through specific code assignments within Line 13, rather than using separate line items. This represents a redesigned provision.
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This checklist is for educational purposes only and does not constitute tax or legal advice. Always review official IRS instructions and consult a qualified professional for guidance.

