The Internal Revenue Bulletin (IRB) is the authoritative instrument of the IRS for announcing all substantive ruling necessary to promote a uniform application of tax law.

IRBs are offered here in Adobe PDF format. The Adobe Acrobat reader is  available for free  and is required to view and print PDF files.

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Comments on Proposed Regs

How to send your public comments on proposed regulations, either by writing to the IRS or through this E-mail option. But remember, comments generally have to be submitted within 90 days after publication.