Tax Professionals
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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Popular links
Programs and services
- Offer in Compromise Program
- Voluntary Disclosure Program
- Request an installment payment agreement (POA required)
- Office of the Taxpayer Rights Advocate
- Request a Conciliation Conference
- File a petition for a hearing with the Division of Tax Appeals
E-file bookshelf
Modernized e-file guides
- Publication 93—personal income tax
- Publication 90—fiduciary income tax
- Publication 116—corporation tax (DRAFT)
- Publication 96—partnership tax
- Other e-file resources
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