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Rev. Proc. 2025-4

Internal Revenue Bulletin 2025-1 · 2026-10-03 edition · updated 2026-10-04 · United States

TABLE OF CONTENTS

SECTION 1. WHAT IS THE PURPOSE OF THIS REVENUE PROCEDURE?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 .01 Purpose of revenue procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 .02 Organization of revenue procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 .03 Other guidance affecting this revenue procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 .04 Updated annually. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 .05 Possible future updates related to Appeals review. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

SECTION 2. WHAT CHANGES HAVE BEEN MADE TO REVENUE PROCEDURE 2024-4? . . . . . . . . . . . . . . . . . . . . . 171 .01 In general. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 .02 Changes made to Revenue Procedure 2024-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

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▸Contents — Internal Revenue Bulletin 2025-1

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