S and C corporations: reminder to file
If your clients requested a six-month extension of time to file, their returns are due soon.
S corporations: you must file your clients' returns by September 15, 2017.
C corporations: you must file your clients' returns, or file Form CT-5.1, Request for Additional Extension of Time to File, by October 16, 2017.
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- Do you file sales tax returns? Learn about the Prepaid Wireless Communications Surcharge
- File Form POA-1, Power of Attorney, online!
- Scams targeting tax professionals
- Guidance for Form CT-300, Mandatory First Installment (MFI) of Estimated Tax for Corporations