2021 Information for Software Developers

New application and distribution process for the New York City Business Tax e-File Program

Beginning Tax Year 2019, New York City is incorporating the Federation of Tax Administrators National Letter of Intent process and migrating New York City e-File tax form specifications FTA State Exchange System (SES) website. The SES website is a secure way to provide files to those that reproduce our forms. New York City will continue to send broadcast emails informing software providers when the letter of intent, e-File schema, and business rule releases are available.

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

Frequently Asked Questions

Letter of Intent to Participate in NYC's Business Tax e-File Program
2021 Letter of Intent

Software Developer’s Guide
Coming Soon

NYC-Specific Schemas
Now available on the State Exchange System

Business Rules
Download TY2021 Business Rules

Naming Conventions
Download TY2021 Naming Conventions

Error Codes
Download TY2021 Error Codes

Test Packages
Now available on the State Exchange System

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