This series has a free web version available online.
26 CFR - Internal Revenue
Treasury Regulations are the tax regulations issued by the United States Internal Revenue Service (IRS), a bureau of the United States Department of the Treasury. These regulations are the Treasury Department's official interpretations of the Internal Revenue Code and are one source of U.S. federal income tax law.
This content series is available through the LawStack mobile app.
Most recent content release.
26 CFR – Internal Revenue
May 22, 2026
This reflects the latest content available for download from LawStack servers. Users must have an active subscription to access downloads.
Choose how you want 26 CFR - Internal Revenue.
- Full-text search
- Self-contained in the app
- Download and take it offline
- Bookmarks and highlighting
- Everything in Free
- Latest up-to-date versions
- Regular updates
- Notifications when the law changes
- Volume discounts
- Single invoice
- MDM-compatible web interface
- Phone and chat support
You use LawStack. Why not your business?
We've worked with organizations large and small — federal agencies (FAA, DOJ), private organizations (LifeFlight), local police departments, universities, and more.
For details, see our For Teams page, email support@lawstack.com , or call (781) 691-3529 .
