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Register your business with MassTaxConnect

Register your business online with the Massachusetts Department of Revenue (DOR).

DOR Contact

The Details of Register your business with MassTaxConnect

What you need for Register your business with MassTaxConnect

Updated: November 10, 2022

MassTaxConnect is the Department of Revenue's web-based application for filing and paying taxes. To register a business with MassTaxConnect, you will need the following documents and information:

  • Your Social Security number (if registering as a sole proprietor with no employees) - Sole proprietors have the option to register with either their Social Security Number or an Employer Identification number.
  • Your Employer Identification Number (EIN) - If you don't have an EIN, please apply for an EIN with the IRS.
  • Your legal name
  • Business mailing address
  • Starting date of your business

Corporations will need the above information along with:

  • Contact information for business officer(s), including title(s) and social security number(s).

Non Profit Organizations will need: 

  • IRS Determination Letter recognizing an organization as a 501(C)(3) - If you don't have a copy of a Determination Letter, kindly request a copy with IRS

How to register Register your business with MassTaxConnect

To register your business go to MassTaxConnect.

When you register on MassTaxConnect you will immediately receive an email confirming your registration request has been received.

Once your registration has been approved you will receive another email letting you know that you can now log in. This second email will contain a link directly to MassTaxConnect with an authentication code. 

For more information visit:

More info for Register your business with MassTaxConnect

For more information visit:

DOR's Call Center can be reached Monday through Friday at (617) 887-6367 or (800) 392-6089 (toll-free in Massachusetts).


Contact for Register your business with MassTaxConnect

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