The following tax returns are due on September 16, 2019:
Corporations: Form 1120 for fiscal year filers whose year-end is June 30.
The following extended tax returns are due on September 16, 2019:
Partnerships: Form 1065.
S-corporations: Form 1120S.
Please note that this applies to calendar year filers only. If your year end is not December 31st, you are a fiscal year filer and your extended due date is different.
For partnerships and S-corporations that are fiscal year filers, the extended due date is six months following the original due date.
The following common tax forms are due September 16, 2019:
Individuals: Form 1040-ES, Federal Estimated Tax Voucher (3rd quarter 2019).
Trusts: Form 1041-ES, Federal Estimated Tax Voucher (3rd quarter 2019).
Please note that any state estimated tax payments may be due on a different date, and that filing deadlines may differ for fiscal year filers.