Internal Revenue Bulletin

Views Updated: Dec 15, 2025

Key Facts

Abbreviation

IRB

Pronunciation

/ˌɪnˈtərnəl ˈrɛvəˌnu ˈbʊlɪtən/

Category

Business

Related Field

Accounting

Other meanings of IRB

International Rugby Board Sports

Institutional Review Board Business

Internal Review Board Gov

Institutional Review Board (approves research protocols at h Medical

Investigational Review Board Gov

Internal Ratings Based Business

Immigration and Refugee Board (of Canada) Gov

Incident Report Book Gov

Independent Reading Book Community

Independent Reading Books Misc