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

Electronic filing is the fastest way to file your business tax return. Electronic filing also allows you to pay your business taxes by direct debit. There are several ways you can file your business tax returns and reports online.

File Electronically

You may use bfile to file Withholding Reconciliation returns. You may use the Maryland Tax Connect Portal to file Sales & Use Tax and Employer withholding returns. The service applies to filing periods in the current year and back two years. Do not send a paper return if you file using bfile.

To file electronically 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 bfile system requirements, see bFile Online Service Center General Help

Year End Reconciliation Filing

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. More information on the required format of the text file. 1099's cannot be uploaded via this method.


File Electronically Through a Tax Preparer

You can also file the following business returns electronically through approved Maryland Online Business Tax Providers.

The list of participating tax preparers does not imply an endorsement of any particular preparer.

Software Vendor Status: Business eFile Program

The following vendors are offering approved 2023 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 2023