Skip to content
ChatProjectCodes

Notice 2021-01

SECTION 5. EFFECTIVE DATE

Internal Revenue Bulletin 2021-2 · 2026-10-03 edition · updated 2026-10-04 · United States

This notice is effective on January 11, 2021, the publication date of IRB 2021-2.

Get a plain-English answer with a citation back to this text.

Ask AI about this code
Export this section
▸Contents — Internal Revenue Bulletin 2021-2
Internal Revenue Bulletin 2021-2

GoCodebook provides public access, search, citation, multilingual explanation, and practical interpretation of legally adopted building regulations. It is not a substitute for the official ICC or California code publications.