Current Standards

NACHA State Tax Change Portal

XML Tax Standards
 -  Glossary of XML Terms

2-D Bar Code Standards Including Vendor ID Codes - 2010 Final
 updated October 31, 2010
 [more on 2-d bar code standards]

Electronic Funds Transfer (EFT)

- NEW Third Party Payment Banking Convention (TPP) - Format and Explanation
      [November 21, 2012]
- Tax Payment Convention (TXP)
- Tax Type Codes and Amount Type Codes

Wireless Communications Sourcing Standards

Standards Development

Fed-State E-File Modernization - StateMeF.com

2-D Barcode Standards Development

[Latest Standards Development Meetings]

Other Information

Electronic Commerce Best Practices [Sept 2000]

Tax Information Group for EC Requirements Standardization [TIGERS]