What is the Internal Revenue Bulletin?

The Internal Revenue Bulletin (IRB) serves as the primary means by which the Internal Revenue Service (IRS) communicates official tax guidance, including revenue rulings, procedures, and other announcements. Issued weekly, this publication provides critical updates and interpretations that help taxpayers, tax professionals, and the IRS itself understand and apply tax laws consistently.

By including revenue rulings, the bulletin offers guidance on how certain situations will be treated under tax law, which is crucial for compliance and planning. Moreover, procedures outlined in the IRB can involve official IRS procedures for handling specific issues, making it a key resource for ensuring that both taxpayers and practitioners are informed about current IRS positions and practices.

In contrast, other choices highlight publications or documents that do not accurately describe the function or frequency of the IRB. For instance, state tax regulations and annual reports are not the focus of the IRB, and while tax collection reports may be compiled, they do not provide the same level of official guidance or interpretation as the IRB does.