About Form 1065-X, Amended Return or Administrative Adjustment Request (AAR)

Information about Form 1065-X, Amended Return or Administrative Adjustment Request (AAR), including recent updates, related forms, and instructions on how to file. Form 1065-X is used (non-electronically) to correct items on a previously filed Form 1065, Form 1065-B, or Form 1066.
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Partnerships

Employee Plans News - Sample plan amendment on benefit limits for underfunded plans

Sample Plan Amendment on Benefit Limits for Underfunded Plans
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Administrators

Fixing common plan mistakes - Using a plan amendment for correction in the self-correction program

Fixing Common Plan Mistakes - Using a Plan Amendment for Correction in the Self-Correction Program
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Administrators

Form 720-X, Amended Quarterly Federal Excise Tax Return

Use Form 720-X, Amended Quarterly Federal Excise Tax Return, to make adjustments to liability reported on Forms 720 you have filed for previous quarters.
Forms and Instructions

Form 1065-X, Amended Return or Administrative Adjustment Request (AAR)

Use Form 1065-X, Amended Return or Administrative Adjustment Request (AAR), if you are not filing electronically, to correct items on a previously filed Form 1065, Form 1065-B, or Form 1066, make an AAR for a previously filed Form 1065, Form 1065-B, or Form 1066, or file an amended return by a partnership-partner of a BBA partnership as part of the modification process of a BBA proceeding with respect to that BBA partnership.
Forms and Instructions

About Form 1120-X, Amended U.S. Corporation Income Tax Return

Information about Form 1120-X, Amended U.S. Corporation Income Tax Return, including recent updates, related forms, and instructions on how to file. Corporations use Form 1120-X to correct a previously filed Form 1120 or 1120-A or to make certain elections after the prescribed deadline.
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Corporations

Instructions for Form 1065-X, Amended Return or Administrative Adjustment Request (AAR)

Use Form 1065-X, Amended Return or Administrative Adjustment Request (AAR), if you are not filing electronically, to correct items on a previously filed Form 1065, Form 1065-B, or Form 1066, make an AAR for a previously filed Form 1065, Form 1065-B, or Form 1066, or file an amended return by a partnership-partner of a BBA partnership as part of the modification process of a BBA proceeding with respect to that BBA partnership.
Forms and Instructions

Form 1120-X, Amended U.S. Corporation Income Tax Return

Use Form 1120-X, Amended U.S. Corporation Income Tax Return, Form 1120X to correct a Form 1120 as originally filed, or as later adjusted by an amended return, a claim for refund, or an examination, or make certain elections after the prescribed deadline (see Regulations sections 301.9100-1 through 3).
Forms and Instructions

Amended returns/refund claims containing invalid IRC 280C(c)(3) elections

LMSB directive on amended returns/refund claims containing invalid IRC 280(C)(3) elections
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Corporations

2020 unemployment compensation exclusion FAQs — Topic D: Amended return (Form 1040-X)

Frequently asked questions about 2020 Unemployment Compensation Exclusion — Amended Return (Form 1040-X).
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