Maryland

State of Maryland Business Income Tax Extensions

E-file an IRS business tax extension with TaxExtension.com

General Instructions

Corporations

Maryland corporation tax returns are due by the 15th day of the 3rd month after the end of the tax year. For calendar year filers, this date is March 15. If you cannot file on time, you can get a Maryland tax extension.

A Maryland extension will give you 7 extra months to file the corporation tax return. However, an extension of time to file is not an extension of time to pay. Your Maryland tax balance must be fully paid by the original deadline (March 15 for calendar year taxpayers) to avoid penalties.

If you owe zero Maryland tax, your tax extension must be filed electronically. This can be done online via Maryland’s Internet Business Filing system, or by calling one of the following phone numbers:

• 410-260-7829 (from Central Maryland)

• 1-800-260-3664 (from elsewhere)

To request a Maryland business extension and make a tax payment, use Form 500E (Application for Extension to File Corporation Income Tax Return). Form 500E must be submitted if this is a corporation’s first filing, whether or not tax is due. On the other hand, if your Maryland tax balance is zero and you aren’t a first-time filer, you can request an extension online using Maryland’s Internet Filing system: interactive.marylandtaxes.com/business/Extension

 

Pass-Through Entities (Partnerships, LLCs, Business Trusts)

A pass-through entity must file its Maryland tax return by the 15th day of the 4th month following the close of the tax year (April 15 for calendar year filers). If you cannot file on time, you can get a Maryland tax extension.

A Maryland extension will give you 6 extra months to file your pass-through entity tax return. However, an extension of time to file is not an extension of time to pay. Your Maryland tax balance must be fully paid by the original deadline (April 15 for calendar year taxpayers) to avoid penalties.

If you owe zero Maryland tax, your tax extension must be filed electronically. This can be done online via Maryland’s Internet Business Filing system, or by calling one of the following phone numbers:

• 410-260-7829 (from Central Maryland)

• 1-800-260-3664 (from elsewhere)

To request a Maryland business extension and make a tax payment, use Form 510E (Application for Extension to File Pass-Through Entity Income Tax Return). Form 510E must be submitted if this is an entity’s first filing, whether or not tax is due. On the other hand, if your Maryland tax balance is zero and you aren’t a first-time filer, you can request an extension online via the Maryland Internet Filing system: interactive.marylandtaxes.com/business/Extension

 

NOTE: S corporations can receive a 7-month Maryland tax extension by filing Form 510E.

For more information, please visit the Comptroller of Maryland Taxes website: taxes.marylandtaxes.com

Maryland State Income Tax Extension Forms

 

Form 500E (Application for Extension to File Corporation Income Tax Return): forms.marylandtaxes.com/current_forms/500E.pdf

Mail Form 500E with payment to the following address:

Comptroller of Maryland

Revenue Administration Division

110 Carroll Street

Annapolis, Maryland  21411-0001

 

Form 510E (Application for Extension to File Pass-Through Entity Income Tax Return): forms.marylandtaxes.com/current_forms/510E.pdf

Mail Form 510E with payment to the following address:

Comptroller of Maryland

Revenue Administration Division

110 Carroll Street

Annapolis, Maryland  21411-0001