2017 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 TY2017 Guide

NYC-Specific Schemas
Download TY2017 Schemas v1.0
Download TY2017 Generic and Attached Schedules v1.0

Business Rules
Download TY2017 Business Rules
Download TY2017 Naming Conventions

Error Codes
Error Categories and Messages

Test Packages
2017 GCT Test Package - Coming soon
2017 UBTP Test Package - Coming soon
2017 UBTEIN Test Package - Coming soon
2017 UBTISSN Test Package - Coming soon
2017 1127 Test Package - Coming soon
2017 COR Test Package - Coming soon
2017 COR NYC-2A Test Package - Coming soon


Other Links
Business Tax Services
Frequently Asked Questions
Email Business Tax e-File (BTeF)