IRS Authorized E-file Provider for Tax Extension Forms

Maryland
State Business Tax Extension

Maryland Requires:

  • C-Corporations should file Form 500E to apply for a Seven-Month Extension of time to File Business Income Tax
    Form 500.
  • S-Corporations & partnerships should file Form 510E to Request for an automatic Six-Month Extension of time to File Pass-Through Entity Income Tax Form 510.
  • Fiduciaries should file Form 504E to Request for an automatic Six-Month Extension of time to File Fiduciary Income
    Tax Form 504.
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IRS Authorized E-file Provider for Tax Extension Forms

ExpressExtension supports the filing of
Forms 500-E, 510-E & 504-E
with the
State of Maryland.


  • Choose Your State Extension Form
  • Fill in Form Details
  • Download & Print the Form

An Overview of Maryland State Business Income Tax Extension Forms

- Updated Feb 08, 2024 - 8.00 AM by Admin, ExpressExtension

Does Maryland support tax extension for business income
tax returns?

Yes. Maryland requires a separate tax extension Form to be filed with the state department apart from the federal tax extension Form 7004.

What extension form does the State of Maryland require?

For Corporation

Businesses operating (as a Corporation) in Maryland need to file Form 500E to obtain a 7-month extension of time to file their business income tax return with the state.

  • Form 500E - Request for a 7-Month Extension to File
    (for C Corporations)

For S-Corporation and Partnerships

S Corporation, Partnership Corporation, and Limited Liability Companies should not file a corporation income tax return. These businesses must file as pass-through entities using Form 510 Maryland Pass-Through Entity Income Tax Return. To extend the deadline to file Form 510, they can submit the extension form 510E for an automatic 6 month extension with the state.

Note: Make sure to pay any taxes due along with the extension Form to avoid penalties and interest.

For Fiduciaries

Businesses operating (as Corporation) in Maryland need to file Form 504E with the state to obtain a 6-month extension of time to file their business income tax return with the state.

Form 504E - Request for Six-Month Extension to File (for Fiduciary)

Note: Make sure to pay any taxes due along with the extension Form to avoid penalties and interest.

When is the deadline to file Form 500,and Form 510, Form 504 with the State
of Maryland ?

Maryland General Corporation
Tax Extensions

Maryland State General Business Corporation tax return Form 500 is due within 4 months and 15 days following the end of the corporation reporting period.

For corporations operating on a calendar year, this deadline is on
April 15.

To file an extension for Form 500, apply for an extension using Form 500E on or before the same date the business tax return is due.

Form 500E grants an automatic 7-month extension of time to file
Form 500.

Note: Make sure to pay any taxes due along with the extension Form to avoid penalties and interest.

Maryland S-Corporation & Partnership
Tax Extensions

Maryland State S Corporation, Partnership Corporation, and Limited Liability Companies should not file a corporation income tax return. These businesses must file as pass-through entities using Form 510 Maryland Pass-Through Entity Income To extend their deadline to file Form 510, these businesses can submit Form 510E for an automatic 6-month extension.

Maryland Pass-Through Entity Income Tax Return is due within 4 months and 15 days.

Maryland Fiduciary Tax Extensions

The Maryland State Fiduciary tax return Form 504 is due within 4 months and 15 days following the end of the corporation reporting period.

For corporations operating on a calendar year, this deadline is on
April 15.

To file an extension for Form 504, apply for an extension by filing Form 504E on or before the original deadline that the business tax return is due.

Form 504E grants an automatic 6-month extension of time to file
Form 500.

Note: Make sure to pay any taxes due along with the extension Form to avoid penalties and interest.

How do I pay my balance due along with the extension Form?

You can choose to pay your balance due along with your return by using any one of the following options:

  • If tax is due - Make full payment by electronic funds transfer or by using Form 500E, if paying by check or money order.
  • Online services offered by Maryland State (https://www.marylandtaxes.gov/online-services/business.php)
  • Payment by check or money order – Complete Form 500E and mail to the
    mentioned address
  • Electronic Funds Transfer - If payment is made by electronic funds transfer,
    do not mail

Where do I mail the extension Form 500E, Form 510E & Form 504E?

Mail Form 500E to the following address:

Address Icon
Controller of Maryland Revenue Administration Division,
110 Carroll Street, Annapolis,
MD 21411-0001.

Mail Form 510E to the following address

Address Icon
Controller of Maryland Revenue Administration Division,
110 Carroll Street, Annapolis,
MD 21411-0001.

Mail Form 504E to the following address

Address Icon
Controller of Maryland Revenue Administration Division,
110 Carroll Street, Annapolis,
MD 21411-0001.