January 15	Final estimated tax payment due.
January 30	NY State LLC and LLP filing fee (Form IT-204-LL-I) due
January 31	Employers should have mailed all W-2's and 1099's to their employees.
Feb 28	Deadline for businesses to send 1099 copies and W-2 copies to IRS.
March 15	Deadlines for filing corporate returns.
April 15	Deadline for filing individual and partnership returns and extensions. First estimated tax payment due.
May 15	Deadline for filing returns for non-profit organizations.
June 15	Second  estimated tax payment due.
July 15	Partnership returns on extensions due
September 15	Corporate returns on extension due
September 15	Third estimated tax payment due.
October 15	Personal returns on extension due
January 15	Fourth estimated tax payment due.