: Provides specific procedures for e-filers and software developers participating in the NYSDTF program. Important Filing Note
If you are looking for a deep dive (a "paper") on how these taxes work, these official handbooks are the best resources: nys-dtf-ct
: Previously used for certain tax payments, these are no longer supported for paper processing as of recent tax years. : Provides specific procedures for e-filers and software
: For forms that still allow manual entry, the NYS DTF website provides enhanced fill-in versions that automate basic math to reduce errors. : Used by corporations to report changes to
: Used by corporations to report changes to unrelated business income or claim overpayments. Key Publications and Guidelines
: This is the standard return for most general business corporations in New York.
: Most corporation tax extensions and estimated tax payments must be filed electronically . Paper versions of these extensions (except Form CT-5.1) are generally no longer accepted for processing.