Your Takeaways:

Business TypeTax Return Due DateTax Return Due Date if Extension is Approved
S Corporation15th day of the third month after the end of the tax year15th day of the ninth month after the end of the tax year
C Corporation15th day of the fourth month after the end of the tax year15th day of the tenth month after the end of the tax year
Partnership or LLC taxed as a partnershipMarch 15thSeptember 15th
Schedule C, Sole ProprietorshipApril 15thOctober 15th
StateHow to File a State Tax Extension
AlabamaCorporations, S-Corps, & Partnerships: The business must file a 120EXT by the filing deadline to receive a 6-month extension. A federal extension request is also accepted. Fiduciaries: A 5 ½ month extension is granted via the federal extension or by filing the stat Form 141AZ EXT.
ArkansasCorporations & S-Corps: Automatic 6-month extension with the filing of a federal extension.
CaliforniaCorporations: Automatic 7-month extension if the corporation is not suspended. If your business owes taxes, you must file Form FTB 3539 by the filing deadline. LPs, LLPs, and REMICs: Granted an automatic 6-month extension
ColoradoAutomatic 6-month extension
ConnecticutCorporations: Must file a Form CT-1120 to request a 6-month extension. Partnerships and S-Corps: You can request a 6-month extension by filing either Form CT1065 or CT1120SI Fiduciaries: Can request a 5 ½ month extension by filing Form CT-1041.
DelawareCorporations & S-Corps: Automatic extension with federal extension. If the business just wants to file for a state extension, it must file Form 1100-EXT for a corporation or 1100-P-EXT for an S-Corp. Partnerships: Can only be extended by filing for a federal extension. Fiduciaries: File Form 400-EX to receive a 6-month extension
District of ColumbiaCorporations & S-Corps: File Form FR-120 to request a 6-month extension. Partnerships: File Form FR-165 to request a 6-month extension. Fiduciaries: File Form FR-127F to request a 6-month extension.
FloridaBusinesses must file Form F-7004 to request an extension to file taxes.
GeorgiaAutomatic extension with the filing of a federal extension.
HawaiiCheck the state’s tax website for business tax extension forms.
IdahoAny business that does not owe taxes receives an automatic extension. If your business does owe taxes, you must file the corresponding form. ·Corporations: Form 41 S-Corps: Form 41S. Partnerships: Form 65. Fiduciaries: Form 66.
IllinoisAutomatic extension with the filing of a federal extension.
IndianaAutomatic extension with the filing of a federal extension.
IowaAutomatic extension if 90% of total taxes are paid by the due date.
KansasAutomatic extension with the filing of a federal extension.
KentuckyAutomatic extension with the filing of a federal extension. However, businesses looking for an extension only in their state return can file Form 720-EXT.
LouisianaAutomatic extension for corporate income tax with the filing of a federal extension.
MaineAutomatic extension with the filing of a federal extension.
MarylandBusinesses must submit the following forms to request an extension to file their taxes. Corporations: Form 500E. S-Corps: Form 510E. Partnerships: Form 510E. Fiduciaries: Form 504E.
MassachusettsAutomatic extension with payment of 80% of total tax liability by the original return due date.
MichiganAll businesses must file Form 4 to request a state tax extension.
MinnesotaAutomatic 7-month extension for corporations.
MississippiCorporations, S-Corps, & Partnerships: You can apply for a 6-month extension using Form 83-180
MissouriAutomatic extension with the filing of a federal extension. However, businesses looking for an extension only in their state return can file either Form MO-7004 or MO-60.
MontanaAutomatic extension with the filing of a federal extension.
NebraskaAutomatic extension with the filing of a federal extension. However, businesses looking for an extension only in their state return can file Form 7004N.
NevadaThe state of Nevada does not have a corporate income tax.
New HampshireFile Form BT-EXT to receive a business tax extension in the state.
New JerseyCorporations & S-Corps: You can apply for an extension using Form CBT-200-T. Partnerships: Automatic extension with filing of federal extension forms. Fiduciaries: Automatic extension with filing of federal extension forms.
New MexicoAdditional time past the filing deadline can be requested using Form RPD-41096.
New YorkBusinesses must submit the following forms to request an extension to file their taxes. Corporations: Form CT-5 for an initial 6-month extension and Form CT-5.1 for an additional 6-month extension. S-Corps: Form CT-5.4. Partnerships & Fiduciaries: Extension can be requested directly on the state’s website.
North CarolinaAutomatic extension with the filing of a federal extension.
North DakotaAutomatic extension with the filing of a federal extension. Individual state extension can be requested but is not automatic with Form 101.
OhioAutomatic extension with the filing of a federal extension.
OklahomaAutomatic extension with the filing of a federal extension. However, businesses looking for an extension only in their state return can file Form 504-C.
OregonAutomatic extension with the filing of a federal extension.
PennsylvaniaAutomatic extension with the filing of a federal extension. However, businesses looking for an extension only in their state return can file the following: Corporations: RCT-101
Rhode IslandRhode Island does not automatically extend state taxes with the approval of a federal extension. All business types must submit Form RI-7004 to request an extension, with the exception of fiduciaries who are unable to request an extension on their state tax return.
South CarolinaYou can request an extension to file by paying your balance due on the state’s free online tax portal.
South DakotaThe state of South Dakota does not have a separate business income tax.
TennesseeAutomatic extension with the filing of a federal extension. However, businesses looking for an extension only in their state return can file Form FAE173.
TexasThe state of Texas does not have a separate business income tax.
UtahAutomatic extension with the filing of a federal extension.
VermontTo file for a tax extension in the state of Vermont, businesses can file Form BA-403.
VirginiaAutomatic extension for corporation income tax returns.
WashingtonThe state of Washington does not have a corporate income tax.
West VirginiaAutomatic extension with the filing of a federal extension.
WisconsinAutomatic extension with the filing of a federal extension.
WyomingThe state of Wyoming does not require business income taxes.
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