Guide for Affordable Care Act (ACA) Information Returns (AIR) Submission Composition…

Publication 5258 — Guide for Affordable Care Act (ACA) Information Returns (AIR) Submission Composition and Reference Guide · 2026-10-03 edition · updated 2026-10-04 · United States

PROCESSING YEAR 2027 PUBLICATION 5258

Publication 5258 (Rev. 9-2026) Catalog Number 69127G Department of the Treasury Internal Revenue Service www.irs.gov

Last Updated 08/04/2026

Change/Document History

It will be assured that this document is current. Printed documents and locally copied files may become obsolete due to changes to the master document.

Date Summary of Changes Changes Marked

Corrected formatting issues and grammar throughout 08/04/2026 publication

08/04/2026 Remove reference for TY2016 throughout

Guide for ACA Information Returns Submission Composition and Reference Guide I

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▸Contents — Publication 5258 — Guide for Affordable Care Act (ACA) Information Returns (AIR) Submission Composition and Reference Guide

Publication 5258 — Guide for Affordable Care Act (ACA) Information Returns (AIR) Submission Composition and Reference Guide

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