2013 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.

Software Developer's Guide

Download TY2013 Guide

NYC-Specific Schemas
Download TY2013 Schemas (v4.0)
Download TY2013 Schemas (v4.1)
Embedded TY2013 Generic Schedules
Attached TY2013 XML Schedules

Business Rules
Download TY2013 Business Rules
2013 Naming Conventions 

Error Codes
Error Categories and Messages

Test Packages
2013 GCT Test Package
2013 BCT Test Package
2013 UBTP Test Package
2013 UBTEIN Test Package
2013 UBTISSN Test Package
2013 1127 Test Package

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