Welcome to the Internal Revenue Bulletins
Corpus-backed assistant for authoritative interpretive tax guidance. Live coverage: every Internal Revenue Bulletin published since 1996 (~1,600 IRBs containing Revenue Rulings, Revenue Procedures, Notices, Announcements, Treasury Decisions) + United States Tax Court opinions from 2020 through present (~1,400 Regular, Memorandum, and Summary opinions). Sourced from irs.gov and ustaxcourt.gov, streaming updates as new IRBs and opinions are published. For statutory text (IRC) and Treasury Regulations, see theirsai.com. Pre-2020 Tax Court archive (1995-2019) trickling in over the coming days.
How it works
Strategic posture. Frame questions as decisions under uncertainty. Prefer explicit assumptions, second-order effects, and falsifiable claims.
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The IRS's official rulings, decoded