Corporation tax extension request forms (current year)
| Form number | Instructions | Form title |
|---|---|---|
| CT-5.1 | CT-5.1-I | Request for Additional Extension of Time to File (for franchise/business taxes, MTA surcharge, or both) |
You can file all other extension requests online. Most corporation taxpayers are required to file their extensions electronically. You may file the forms listed below online. If you're e-filing with approved software or using our Web File online service and want to read the form instructions, see the corporation tax extension request instructions.
- Form CT-5, Request for Six-Month Extension to File (for franchise/business taxes, MTA surcharge, or both)
- Form CT-5.3, Request for Six-Month Extension to File (for combined franchise tax return or combined MTA surcharge return, or both)
- Form CT-5.4, Request for Six-Month Extension to File New York S Corporation Franchise Tax Return
- Form CT-5.6, Request for Three-Month Extension to File Form CT-186 (for utility corporation franchise tax return, MTA surcharge return, or both)
- Form CT-5.9, Request for Three-Month Extension to File (for certain Article 9 tax returns, MTA surcharge, or both)
- Form CT-5.9-E, Request for Three-Month Extension to File Form CT-186-E (for telecommunications tax return and utility services tax return)
How to file online
File using our Online Services or your NYS approved e-file software. To use our Online Services, create an account, log in, and select File a corporation tax online extension.
If you are unable to file electronically, call (518) 457-5431 and request a form.
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