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Methods of Filing Maryland Tax Returns

File Yourself!

There are several ways you can file your business income tax returns on paper or electronically. Please review the links at the bottom of the page, and choose the filing method that best fits your needs.

...Or You Can Use Independent Computer Software Products

You can file both your Maryland and federal tax returns online using approved software on your personal computer.

...Or You Can Use a Professional Tax Preparer

You can choose among a host of professional tax preparers in Maryland who can file your return electronically for you. While we cannot endorse any specific professional, we offer a list of e-file providers for businesses for your convenience.

IRS Electronic Free File for Federal Returns

You may file your Maryland Corporation or Pass-Through Entity returns electronically using the Modernized e-File method of Federal/State 1120/1065 filing. For more information, contact our e-File Help Desk at 410-260-7753

You can file your Maryland employer withholding tax returns (Form MW506) and sales and use tax returns for free online, using bFile, if you meet the requirements below. The service applies to filing periods in the current year and two back years.

You may use bFile to file employer withholding, sales and use tax, and withholding reconciliation returns. Do not send a paper form if you file using bFile.

To use bFile, you need to have:

  • a valid federal employer identification number (FEIN) or Social Security number, AND
  • a Maryland Central Registration Number (your eight-digit Maryland tax account number).
If you have not registered to file Maryland business taxes or do not have a Maryland Central Registration Number, you may register by completing the Maryland Combined Registration Online Application. You will receive the necessary information to file Maryland business taxes approximately one week after submitting your application online.

For system requirements, see bFile Online Service Center General Help

Employers now have two options to file Form MW508 and W-2 information electronically.

  • W-2 Bulk Upload Application - This application will allow employers and payroll providers to upload income tax withholding statements and W-2s electronically without limitation. Click here for information on the required format of the text file. 1099's cannot be uploaded via this method.
OR
You can also file the following business returns electronically through approved Maryland Online bFile Providers:
  • Sales and use tax returns
  • Employer withholding returns
  • Wage and tax statements (Form W-2)
  • Unemployment insurance reports (Form Maryland Department of Labor/OUI 15/16)
The list of participating tax preparers does not imply an endorsement of any particular preparer.

The following vendors are offering approved 2019 forms for business taxpayers for Maryland's electronic filing (eFile) program. The information is presented in .PDF format for easier printing and saving. The forms are arranged in alphabetical order with no preference of one company or product over another.

Approved Business eFile Vendors for Tax Year 2019