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MiUI Resources for Employers and TPAs

MiUI Resources for Employers and TPAs

This page provides regularly updated helpful information, links, and resources about what employers and third-party administrators (TPAs) need to know about MiUI.

MiUI for tax is now live! Employers and TPAs will use MiUI for tax functions such as filing quarterly wage and tax reports, uploading wage files, registering as a new business, and more. Phase Two of MiUI for Benefits will go live on Nov. 9, 2026, so for a short period of time employers and TPAs will perform tax functions in MiUI and benefits functions in the current MiWAM system.

Note: In MiUI, all employer representatives such as Professional Employer Organizations (PEO), fiscal intermediaries, and those with Power of Attorney (POA) will be classified as a third-party administrator (TPA).

To stay up to date with MiUI, sign up for the UIA’s free Michigan Employer Advisor newsletter. Readers of the Advisor will automatically receive the MiUI Minute newsletter, which provides regular updates about the new system.

Sign up for Michigan Employer Advisor

 

Your MiWAM account is going away Nov. 9

UIA’s final transition to its new unemployment user platform is just around the corner. On November 9, you no longer will be able to access your MiWAM account. All unemployment tax and benefit obligations will be performed in MiUI.

It’s vitally important to activate your MiUI account today to best manage your unemployment duties. Go to your MiWAM homepage and look under the MiUI Account Activation Code tab to retrieve your personalized 8-digit code.

After your account is initiated, you can use the link at Michigan.gov/UIA to access MiUI in the future.

More information about the initiation/registration process can be found on the MiLogin employer training page at MiUI University, or you can view this video for more information.

Please select the Employer or TPA Account initiation option (shown below) when initiating your account.

The "Employer Account Initiation" box is highlighted on the welcome page.

Ready to log in to MiUI? Log in for Employers here and log in for TPAs here.

What's new since my last visit?

In October, the following were updated:

In September, the following were updated:

  • Icon of a checklist.

    Getting Started with MiUI

    Use this list to check your readiness before accessing MiUI.
    Learn more
  • Icon of a book with a pencil and video on it.

    Training and Resources

    Find learning materials for using MiUI listed by topical category.
    Visit the page
  • Icon of documents with data and text.

    MiUI Toolkit

    Everything you need to know about tax functions in MiUI, all in one detailed toolkit.
    Get the Toolkit
  • An icon of a file with upload symbols.

    Quarterly Wage Report File Testing

    Test wage report file formats before uploading to MiUI.
    Test your Quarterly Wage Report File
  • Icon of a book.

    MiUI Minute Newsletter

    Search through short and informative newsletters sent to employers and TPAs.
    Visit the blog
  • Two boxes and a speech bubble icon.

    FAQs

    Search through the most frequently asked questions from employers and TPAs.
    Learn more