Register Your Business with MassTaxConnect

Register your business online with MassTaxConnect to file and pay taxes to the Massachusetts Department of Revenue (DOR).

Updated: August 9, 2023

Table of Contents

Before you begin

MassTaxConnect is DOR's online application for registering, filing and paying taxes.

Before registering, you should answer the following:

What you need

To register your business with MassTaxConnect, you will need your:

  • Social Security number if registering as a sole proprietor with no employees 
  • EIN/FEIN - Required for all businesses including sole proprietors with employees
  • Start date of your business
  • Legal and mailing addresses.

All businesses except sole proprietorships will need the above information along with: 

  • Contact information for owners/officers including their
  • Titles and Social Security numbers.

Non profit organizations will need an IRS Determination Letter recognizing an organization as a 501(C)(3).

If you don't have a copy of a Determination Letter, you can request a copy with IRS.

Register as a business (including sole proprietorships) who have never filed MA taxes

Businesses are required to register with an EIN/FEIN in MassTaxConnect.

Sole proprietors must register under their Social Security number. A sole proprietor with employees must also provide an EIN/FEIN.

Getting Started

To learn how, view these instructions along with the registration video tutorial.

On the upper right-hand side of MassTaxConnect's home screen:

  • Choose Sign Up.

You may also register by clicking on Register a New Taxpayer under Quick Links.

MassTaxConnect home page Sign Up link
  • Choose Register a New Business.
MassTaxConnect Register a Business link
  • Provide the required registration information.
  • Set up two-step verification.
  • When complete, you will receive a confirmation email.
  • You will receive a mailed registration certificate depending on the tax(es) you register for.

Register as a sole proprietor who has filed MA taxes

You will already be in DOR's system if you (or a third party on your behalf) have previously filed MA taxes such as personal income.

Getting Started 

If you have filed taxes with DOR, there are 2 steps to register your business as a sole proprietorship in MassTaxConnect.

Step 1: Create a MassTaxConnect Logon

To learn how, view these instructions and the logon video tutorial.

On the upper right-hand side of MassTaxConnect's home screen:

  • Choose Sign Up.

 

 

MassTaxConnect home page Sign Up link
  • Choose Create My Logon.
MassTaxConnect Create My Logon link
  • Choose I am an individual who has previously filed taxes in MA. 
MassTaxConnect screenshot: I am an individual who has previously filed taxes in MA.

If you can't find tax information to verify who you are when creating your logon, contact  DOR, and request a Notice of Account ID.

  • Finish the remaining instructions.
  • You will receive a confirmation email with a link to MassTaxConnect. 
  • Select the link which will take you to MassTaxConnect's home screen.
  • Your new user name and password will already be filled in.
  • Select Log in to activate two-step verification
MassTaxConnect homepage Log in with username and password filled in
    • When complete, you will be on your Summary page and ready to register your business.

    Step 2: Register Your Business

    To learn how, view these instructions and the registration video tutorial.

    • From the Summary page, choose More.
    MassTaxConnect register from summary page

     

    • Under Access, choose Add an Account, New Location or New License.
    • Provide the required registration information.
    • When complete, you will receive a confirmation email.
    MassTaxConnect Access screen: Add an account, new location or license

    Activate two-step verification

    DOR uses two-step verification to protect your MassTaxConnect account. When registering, MassTaxConnect will prompt you to set up two-step verification.

    Set up your two-step verification by choosing one of the following:

    • Authentication App (such as Google Authenticator)

    • Text Message

    • Email.

    View the two-step verification video tutorial.

    MassTaxConnect two-step verification screen

    Add an account (tax type), new location, or new license

    If your business is already registered with MassTaxConnect, you can easily add an:

    • Account (tax type) 
    • New location 
    • New license.

    Examples

    • You are registered for sales and use tax and want to register for meals and withholding.
    • You are opening another store where you sell TVs and appliances.
    • You have a convenience store and now want to sell cigarettes.

    Getting Started

    MassTaxConnect Summary page with More option in red

       

      • Under Access, choose Add an Account, New Location or New License.
      • Follow the remaining instructions.
      • When complete, you will receive a confirmation email.
      MassTaxConnect Access section with Add an Account, New Location or License link highlighted

      Registration certificates

      Once approved, you will receive a mailed certificate for each location for the following tax types:

      • Cigarette License
      • Cigars License
      • Electronic Nicotine Delivery Systems License
      • Marijuana Retail
      • Meals
      • Sales and Use
      • Telecommunications
      • Room Occupancy 

      Each certificate must be posted and visible at all times.

      Sample Sales and Use Tax Registration Certificate

      Sample Sales and Use Tax ST-1 Registration certificate

      Contact

      Tax Department: Contact Center hours are 9 a.m. – 4 p.m., Monday through Friday. 

      • (617) 887-6367 or 
      • (800) 392-6089 (toll-free in Massachusetts).

      For more ways to connect, go to Contact DOR.

      Ask your question through a MassTaxConnect e-message

      If registered, log in to your MassTaxConnect account and send DOR a secure e-message. 

      • From the MassTaxConnect Summary page, choose More.
      MassTaxConnect register from summary page
      • Choose Messages.
      • Select Manage Messages.
      • Send message. 

      Do you need to register with MassTaxConnect?

      If you need to register with MassTaxConnect, go to:

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