Go to the MassTaxConnect website
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Under Quick Links, click Register a New Taxpayer
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Select Register a Business
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Choose “I am registering a business, organization, or other entity”
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Complete all fields to register for both:
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Create a username, password, and PIN
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Save or print your confirmation page

Visit MassTaxConnect
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Enter your username and password
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Complete two-step verification via app, email, or text
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Enter the verification code to gain access

Go to DUA Employer Registration
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Click UI Employer Registration
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Start the application and receive a temporary user ID and password (valid for 30 days)
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Complete the full application to receive your Employer Account Number (EAN)

Use your temporary credentials from registration to log in
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Reset your password, select a security question, and set a 4-digit PIN
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Store this information securely for future use

Sign in at MassTaxConnect
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Click Manage My Profile (top-right corner)
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Select the More… tab
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Under Third Party Access, click Assign Access Rights to a Third Party
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Locate and select Check from the directory or search bar
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Click Next
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Under Give Rights, select your withholding and PFML accounts
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From the Access Rights dropdown, select File and Pay
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Click Next and then Submit

Visit UI Online for Employers
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Log in with your user ID and password
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Navigate to Account Maintenance → TPA Authorization
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Click New, and enter TPA ID: 111213
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Set the Beginning Date to today; leave End Date blank
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Click Add Roles, and select:
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Do NOT select any of the following roles:
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