1040-X
Amended U.S. Individual Income Tax Return
Directory entry. Title and current location confirmed on irs.gov on 18 August 2026; the linked page is authoritative for the current revision and instructions.
Topics that use this
- Statute of limitations
- Omission or error on return, document, or affidavit
- Post-filing correspondence (e.g., math error notices, under-reporting notices)
- Interpretation and analysis of CP-2000 notice and correspondence audits
- Amended returns and claims for refund (e.g., Form 1040X, Form 843, effect on statute of limitations)
- Requesting an audit reconsideration (e.g., documents and forms)