2016 Information for Software Developers

All participants in the NYC program must comply with the procedures, requirements, and specifications as detailed in IRS Publication 3112: IRS e-File Application and Participation and IRS Publication 4164: Modernized e-File Guide for Software Developers and Transmitters.

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Additional IRS Publications

Software Developer's Guide
Download TY2016 Guide
NYC-Specific Schemas
Download TY2016 Schemas (v3.0)
Download TY2016 Schemas (v3.1)
Download TY2016 Schemas (v3.2)
Business Rules

Download TY2016 Business Rules
2016 Naming Conventions
Error Codes
Error Categories and Messages
Test Packages

2016 GCT Test Package
2016 UBTP Test Package
2016 UBTEIN Test Package
2016 UBTISSN Test Package
2016 1127 Test Package
2016 COR Test Package
2016 COR NYC-2A Test Package – revised 2/13/17
Other Links
Business Tax Services
Frequently Asked Questions
Email Business Tax e-File (BTeF)