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Corporation tax
Start, expand, or end a business
Start or buy a business
(Español)
Expand a business
End a business
Forms and instructions
New for January 2009 -
e-file and e-payment is required for certain filers
Forms and instructions (current year)
- corporation tax
Forms and instructions (prior years)
- corporation tax
LLC/LLP/Partnership forms (current year)
Publications
Publications
- corporation tax
Advisory Opinions (TSB-A)
Guidances (NYT-G)
Memos (TSB-M)
Online services
Penalty and interest calculator
NAICS Code Lookup
Corporation Tax Issuer's Allocation Percentages (IAP)
Online permit assistance and licensing
View and pay a bill through the
Online Tax Center
Sign up for the
Tax Department’s subscription service
Business Answer Center
Other information
Underpayment of estimated tax by a corporation
Empire Zones Program information
LLC, LLP & partnership information
Tax calendar
Outreach events
Corporation tax statistical reports
Last Modified: December 9, 2008
