From the makers of Citation Safe
Citation Safe for Tax: verify every IRC section and Treasury Regulation citation before the IRS does.
The same deterministic, no-LLM-in-the-loop existence check that powers Citation Safe, pointed at tax authority. A misstated citation in a return position or opinion isn't just embarrassing — it's preparer-penalty exposure under IRC section 6694. We check every IRC section and Treasury Regulation citation against the actual public source — live, not from a cached table — before you file, not after an exam starts.
Checked live against Cornell Law's Legal Information Institute.
Checked live against the eCFR's official versioner API.
Checked against CourtListener's Tax Court index, with a case-name cross-check whenever a case name accompanies the cite. Lower-confidence than case law — a citation whose claimed name does not match the record comes back UNCONFIRMED, never VERIFIED.
Citation Safe for Tax pricing
Catching a misstated citation before you file costs a fraction of catching it in an IRC section 6694 preparer-penalty exam.
Get started with Solo — $29/mo verifies briefs across every vertical, including IRC sections and Treasury Regulations. Try free.
Need higher volume? Professional $79/mo at 150 docs/mo. Multi-vertical teams: Argus Verification Suite All-Access $99/mo.
Same refund contract as Citation Safe: if we stamp VERIFIED and we are wrong, that verification is refunded automatically. Full policy at /refund.
Also citing across multiple verticals? Argus Verification Suite All-Access bundles every vertical (Legal, Tax, Medical, Government) for $99/mo.
Accuracy -- measured, not claimed
This is Citation Safe's own measured accuracy for tax citations against real IRC sections, Treasury Regulations, and Tax Court citations -- a separate eval set from Citation Safe's legal case-law numbers at /quality, since this vertical checks different sources (Cornell LII, the eCFR versioner API, and CourtListener's Tax Court index) on the same underlying verification engine. 59 tax-vertical citations authored: 29 real IRC sections (26 U.S.C.), 19 real Treasury Regulations (26 CFR), 5 fabricated/future-dated Tax Court citations, 6 outside-coverage citations (Rev. Rul./Rev. Proc./PLR, recognized by the parser but...
Tax citation coverage is a different data problem than case law, so it ships as its own data adapter on the same verification engine (architecture described at /quality) rather than a bolt-on. Free tier verifications are shared with Citation Safe: 3/month, no card required.
Honest coverage note
Revenue Rulings, Revenue Procedures, IRS Notices, and Private Letter Rulings are recognized by our parser but marked UNCONFIRMED — OUTSIDE COVERAGE today. We have not found a reliable free structured public source for these yet, and we would rather tell you that than fake a check.
Frequently asked questions
What does Citation Safe™ for Tax check?
IRC sections (26 U.S.C.) against Cornell Law's Legal Information Institute, Treasury Regulations (26 CFR) against the eCFR's official versioner API, and Tax Court opinions against CourtListener's Tax Court index, with a case-name cross-check when a case name accompanies the cite.
Does it cover Revenue Rulings, Revenue Procedures, IRS Notices, or Private Letter Rulings?
Not yet. Our parser recognizes them but marks them UNCONFIRMED — OUTSIDE COVERAGE, because we have not found a reliable free structured public source for them. We would rather tell you that than fake a check.
Is this legal or tax advice?
No. Citation Safe for Tax is a verification tool, not tax or legal advice, and does not create an attorney-client or accountant-client relationship. Human review of every citation is always required.
What's free?
3 document verifications per month, shared with Citation Safe's free tier, no card required.
What does it cost after the free tier?
Verifying tax citations is covered by the unified Solo plan at $29/mo (30 docs/mo) or Professional at $79/mo (150 docs/mo) at /pricing. Argus Verification Suite All-Access at $99/mo bundles all four verticals.
Is this a separate product from Citation Safe?
No — it's the same deterministic, no-LLM-in-the-loop verification engine that powers Citation Safe, pointed at a different data adapter for tax authority instead of case law.
Also available
- Citation Safe — Legal case citations — existence, quote-match, and proposition support (built, rolling out in stages)
- Citation Safe for Medical — Medical literature citations — PubMed, Crossref, ClinicalTrials.gov, with retraction flagging
- Citation Safe for Government Contracts — FAR, DFARS, GAO bid-protest, and Federal Circuit/COFC citations
Need more than one? See the Argus Verification Suite All-Access ($99/mo, all four verticals bundled).
Citation Safe for Tax is a citation-verification workflow tool, not tax or legal advice, and no professional relationship is created by using it. Verify every authority against the primary source before filing — see /disclaimer.