Michigan New Business Registration Guide

Tax Agencies

• Michigan Department of Treasury — State Withholding Income Tax

• Michigan Unemployment Insurance Agency (UIA) — State Unemployment Insurance (SUI)

Types of Tax

• State Withholding Income Tax

• State Unemployment Insurance (SUI) Tax

Registration Steps

1. Create a Username and Password with Michigan Treasury Online (MTO)

• Go to the Michigan Treasury Online (MTO)

• Click “Create My User Profile”

• Complete the profile setup, including username, password, and security questions

• Confirm via email

2. Register for Treasury and SUI Account Numbers

• Log in to MTO

• From the dashboard, under Tax Services, click “Start a New Business (E-Registration)”

• You will be redirected to the MiWAM Employer Registration portal

• Click “Start eRegistration”

• Complete the 12-step business questionnaire

• Certify and submit the application

• Print/save the confirmation page

3. Link Your MTO User Profile to the Business Account

• Log back into MTO

• Under Tax Services, click “Manage Business Registration”

• Select “Create a New Relationship”

• Enter your Treasury Account Number

• Select all applicable taxes (Withholding, UI, etc.)

• Complete security questions

• Retrieve and enter the emailed access code to confirm the relationship

4. Register for SUI Access via MiWAM

• Go to the Michigan Web Account Manager (MiWAM)

• Click “Sign Up for an Employer/Service Provider MiWAM Account”

• Select “Employer”

• Complete account setup with employer information

Update Your Check Account

Need Help?

• Withholding (Treasury): Call 517-636-6925

• SUI (UIA): Visit UIA Employer Resources

• Treasury Help Center

• UIA MiWAM Employer Support