The web Browser you are currently using is unsupported, and some features of this site may not work as intended. Please update to a modern browser such as Chrome, Firefox or Edge to experience all features Michigan.gov has to offer.
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.
When Phase One of MiUI for Tax is live, employers and TPAs will use UIA's new unemployment insurance platform 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 later, 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 information about the MiUI implementation, 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
If you want to see what to expect from the new system, sign up for an online Employer or TPA seminar on MiUI. Two seminars are scheduled each week for employers and one for TPAs. Each will provide an overview of key changes and help attendees prepare their organization for Go Live, scheduled for February 23, 2026. Sign up for a session
During the week of February 2, the following was updated:
During the week of January 26, the following was updated:
- Employer Account Number information was added to the Account Maintenance FAQ.
- TPA IDs in MiUI FAQ category was added.