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Every plan includes access to the complete U.S. Tax Code, IRS publications, Treasury regulations, court cases, and private rulings.

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  • 10 queries per day
  • Complete U.S. Tax Code access
  • All IRS Publications & Regulations
  • Tax Court Cases & Rulings
  • Private Letter Rulings
  • Conversation history
  • Source-cited responses
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Extended

$15
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  • Unlimited queries
  • Complete U.S. Tax Code access
  • All IRS Publications & Regulations
  • Tax Court Cases & Rulings
  • Private Letter Rulings
  • Conversation history
  • Advanced tax research
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The Most Comprehensive Tax Database Available

Every plan gives you access to the entire U.S. federal tax law library. This isn't a summary or simplified version—it's the complete, authoritative source material.

1,000+
IRS Publications
Complete official IRS guidance on every tax topic
Thousands
Treasury Regulations
The binding rules that implement the tax code
10,000+
Court Cases & Rulings
Tax Court decisions, Revenue Rulings, and PLRs
Complete
Arizona State Tax
Full Arizona state tax code and regulations

What's Actually Included

This is the real deal. Every authoritative source a tax professional uses.

Federal Tax Law

  • Internal Revenue Code (Complete U.S. Tax Code)
  • Treasury Regulations (Title 26 CFR)
  • IRS Publications (Pub 1 through 5000+)
  • Revenue Rulings & Revenue Procedures
  • Private Letter Rulings (PLRs)

Case Law & State Tax

  • U.S. Tax Court Cases & Memorandum Decisions
  • Federal Circuit Court Tax Decisions
  • Technical Advice Memoranda (TAMs)
  • Arizona Revised Statutes (Title 43 - Taxation)
  • Arizona Administrative Code & Revenue Rulings

All plans are exclusive to Shah Tax Advisory clients with active TaxDome accounts. Not a client yet? Visit shahtaxadvisory.com to get started.