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Bizora Knowledge Base

Bizora is an AI tax research platform trained exclusively on primary source tax law, including the Internal Revenue Code, Treasury Regulations, IRS rulings, and state tax authority guidance. Bizora covers all 50 US states for income tax, sales tax, and property tax, along with select international tax codes.
What sources does Bizora's AI train on?
At Bizora, accuracy is foundational. Our AI is trained exclusively on authoritative, primary source tax law and curated guidance from trusted institutions, from federal statutes to state tax codes. This Knowledge Base lists the exact legal and regulatory content that powers Bizora's responses. We review and update this library on a regular cadence so the system stays aligned with current law and IRS positions. Whether you use Bizora for compliance work, transaction structuring, or a custom build through our API, every answer traces back to a verified real world source, not generic web content or crowd sourced summaries.
What federal tax authorities does Bizora cover?
Bizora's AI is trained on the full range of federal tax authority, including the Internal Revenue Code, Treasury Regulations, and every major category of IRS guidance.
• IRC Tax Code and Statutes
• IRS Action on Decision
• IRS Administrative Assistance
• IRS Administrative Assistance Agreements
• IRS Announcement
• IRS Chief Counsel Advice
• IRS Chief Counsel Advisory Memorandum
• IRS Chief Counsel NoticesIRS Definitions
• IRS E-Mail Chief Counsel Advice
• IRS FAQsIRS Field Attorney Advice
• IRS Field Service Advisory Memorandum
• IRS Forms and Instructions
• IRS Internal Revenue Bulletin
• IRS Industry Specialization Program Papers
• IRS Private Letter Ruling
• IRS Program Manager Technical Assistance
• IRS Publication and Bulletins
• IRS Revenue Procedure
• IRS Revenue Ruling
• IRS Service Center Advice
• IRS Technical Advice Memorandum
• IRS Technical Expedited Advice Memorandums
• IRS Written Determination
• Signed Income Tax Treaty
• Tax Court Cases
• Treasury Regulations
• Treasury Department Technical Explanations
• Treaty Protocol and Treaty Technical Explanation
• US Ratification Instruments
Does Bizora cover state income tax, sales tax, and property tax in all 50 states?
Yes. Bizora covers all 50 US states plus US territories for state income tax, and now also covers sales and use tax and property tax across all 50 states.

Full state list: Alabama (AL), Alaska (AK), Arizona (AZ), Arkansas (AR), California (CA), Colorado (CO), Connecticut (CT), Delaware (DE), Florida (FL), Georgia (GA), Hawaii (HI), Idaho (ID), Illinois (IL), Indiana (IN), Iowa (IA), Kansas (KS), Kentucky (KY), Louisiana (LA), Maine (ME), Maryland (MD), Massachusetts (MA), Michigan (MI), Minnesota (MN), Mississippi (MS), Missouri (MO), Montana (MT), Nebraska (NE), Nevada (NV), New Hampshire (NH), New Jersey (NJ), New Mexico (NM), New York (NY), North Carolina (NC), North Dakota (ND), Ohio (OH), Oklahoma (OK), Oregon (OR), Pennsylvania (PA), Rhode Island (RI), South Carolina (SC), South Dakota (SD), Tennessee (TN), Texas (TX), Utah (UT), Vermont (VT), Virginia (VA), Washington (WA), West Virginia (WV), Wisconsin (WI), Wyoming (WY).


Coverage Area

States Covered

State Income Tax

All 50 states plus US territories

Sales and Use Tax

All 50 states

Property Tax

All 50 states

What international tax law does Bizora cover?
Bizora covers a growing set of international tax codes and cross border frameworks, including OECD guidance.
• Canada Tax Code
• India Tax Code
• Netherlands Tax Code
• Singapore Tax Code
• General guidance on all foreign jurisdictions
• OECD Pillar Two Commentary and Guidance
• OECD Pillar Two Model Rules
• OECD Transfer Pricing Guidelines


FAQs

Does Bizora cover state sales tax and property tax in all 50 states?

Yes. As of 2026, Bizora covers sales and use tax and property tax in all 50 US states, in addition to existing state income tax coverage.

What primary sources power Bizora's tax research?

Bizora is trained exclusively on primary source tax law, including the Internal Revenue Code, Treasury Regulations, IRS rulings and guidance, state tax authority publications, and select international tax codes.

Does Bizora cover international tax law?

Yes. Bizora covers select international tax codes including Canada, India, the Netherlands, and Singapore, along with OECD Pillar Two and transfer pricing guidance.

How often is Bizora's tax knowledge base updated?

Bizora reviews and updates its underlying knowledge base on a regular cadence to stay aligned with current law and IRS positions.