: 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. nys-dtf-ct
: Provides specific procedures for e-filers and software developers participating in the NYSDTF program. Important Filing Note : This is the standard return for most
: Used by corporations to report changes to unrelated business income or claim overpayments. Key Publications and Guidelines nys-dtf-ct
If you are looking for a deep dive (a "paper") on how these taxes work, these official handbooks are the best resources: