2015 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 TY2015 Guide
NYC-Specific Schemas
Download TY2015 Schemas (v3.7)
Download TY2015 Schemas (v3.3)
Download TY2015 Schemas (v3.4)
Download TY2015 Generic and Attached Schedules (v1.0)
Business Rules

Download TY2015 Business Rules

2015 Naming Conventions
Error Codes

Error Categories and Messages
Test Packages

2015 GCT Test Package
2015 UBTP Test Package (v2.0)
2015 UBTEIN Test Package
2015 UBTISSN Test Package
2015 1127 Test Package
2015 COR Test Package (v2.0)
2015 COR NYC-2A Test Package (v2.0)
Other Links
Business Tax Services
Frequently Asked Questions
Email Business Tax e-File (BTeF)