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:

The most "interesting" aspect for filers currently is the . Primary Corporation Tax Forms nys-dtf-ct

: Previously used for certain tax payments, these are no longer supported for paper processing as of recent tax years. If you are looking for a deep dive

: The Corporation Tax Modernized E-File Handbook , which details the technical requirements for filing and recent changes for the 2025 tax year. nys-dtf-ct