2008 Information for Software Developers

The New York City Department of Finance would like to partner with the software industry to encourage electronic filing of New York City General Corporate Tax (GCT) returns. This program allows New York City corporations to electronically file both their federal and NYC corporate returns together.   We realize the success of this program depends upon the efforts of both the participating software developers and the Department of Finance.

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, IRS Publication 4164:  Modernized e-File Guide for Software Developers and Transmitters asd set forth in this handbook.
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Additional IRS Publications

Software Developer's Guide
Download 2008 Guide (Updated 05/18/09)

NYC-Specific Schemas, Rules and Error Codes
Download 2008 Schemas
Download 2008 Business Rules
Download 2008 Error Codes

Test Packages
2008 Test Package (Small to Medium Corporations)
2008 Test Package (Large Corporations)



Other Links
Business Tax Services
Information for Business Tax Practitioners
Business Tax Filers (Taxpayer) Corporation
Frequently Asked Questions
Email Business Tax e-File (BTeF)