MiUI Minute: Issue 26

The Michigan Unemployment Insurance Agency (UIA) is transitioning to a new tax and benefits system called MiUI, which will replace the current Michigan Web Account Manager (MiWAM). MiUI is being launched in two parts, with Tax functions now live, and Benefits functions scheduled to be available this summer.

The next three issues of the MiUI Minute will feature a series of articles about Quarterly Wage Reporting in MiUI. In this issue of the MiUI Minute, we're providing information about the file formats available for uploading wage report files in MiUI. As a reminder there are various ways to submit quarterly wage reports in MiUI: including file upload, manual entry, copy previous quarter, no employment and no wage report. This issue covers the file upload method. Future issues will cover the other filing options.

---

Wage Report File Formats

All past due and future quarterly wage reports must be submitted in MiUI. The first quarterly wage report for 2026 is due on Monday April 27.
When filing quarterly wage reports using the file upload filing method in MiUI, only the following four file formats are accepted: MiUI Delimited, ICESA, EFW2, or XML. The MiWAM file format (Form 1028) will no longer be accepted and employers and TPAs will need to update existing processes to reflect acceptable file formats.

On the Quarterly Wage Report Testing page on MiUI University, you can learn more about file format specifications and test your wage file format using the Wage Report File Validation Tool. It is recommended that you use the tool to test your file format prior to submitting your wage report in MiUI.

Note: Do not upload actual employer information or personally identifiable employee data during the testing process.

• File format overview
• File specifications and submission
• Record tables
• Error messages
• Example of file layout  

MiUI Delimited

ICESA

EFW2

XML

Test Your Wage Report Files 

---

Leverage Resources on MiUI University

Remember that you have access to a library of tools and reference guides at MiUI University! If you’re not sure where to start, check out Getting Started with MiUI for Employers and Third-Party Administrators. Download or bookmark the MiUI Toolkit, a comprehensive reference tool for using MiUI for Tax functions.

If you need help using the Wage Report Validator Tool, refer to Wage Report File Validation Tool Quick Reference Guide for more information. You can also find more information about each of the four file formats accepted in MiUI on the Quarterly Wage Reporting webpage under File Format Specifications.

---

Hot Tip!

Based on recent conversations with TPAs and Employers, here is a reminder based on common errors when submitting a MiUI Delimited wage report format.

MiUI Delimited wage report format: Be sure to include commas (,) for any blank fields in your employer record. For instance, if there is no second line in the mailing address, add a comma in that location.   

Example Address:

Correct MiUI Delimited format: 
“1000 MAIN ST,,CHELSEA,MI,48818,,”

Example Address with a second address line:

Correct MiUI Delimited format: 

---

Quarterly Wage Report Learning Resources

For more information on file formats, visit the Quarterly Reports in MiUI page on MiUI University. You can find various guides that will walk through the file format requirements and wage report submission process. There is also a wage report submission job aid, a Quarterly Reports YouTube playlist, and FAQs available.

To further understand MiUI and explore its features in-depth, review the MiUI Toolkit available on MiUI University. The toolkit includes step-by-step instructions for file upload, manual entry, and no employment and no wage report.

The next issue of the MiUI Minute will focus on the other methods to submit quarterly wage reports in MiUI.

---

Note on Go Green preferences for Benefit-related notices

During the transition from MiWAM to MiUI, the Go Green/electronic mailing preference for Benefits-related notices was disabled in MiWAM, and some employers may receive Benefits mailings by paper. 

We are actively evaluating options to restore electronic delivery during this interim period; if a fix is not feasible, paper delivery will continue until MiUI R2 for Benefits goes live later this summer, when Benefits mailing preferences will be available in MiUI. Tax-related notices sent through MiUI are not impacted—employers and third-party administrators (TPAs) will continue to receive Tax communications according to their selected delivery preferences.

---

Where to find ongoing support and learning resources

• MiUI for Employers
• MiUI for TPAs

If you need assistance:

• For MiLogin general questions, visit the MiLogin Help Page.
• For MiUI and adding MiUI as a service in MiLogin technical questions, email UIA-MiUIEmployerSupport@Michigan.gov.
• For MiWAM technical questions, email MiWAMSupport@Michigan.gov.
• For all other general unemployment questions, call the Office of Employer Ombudsman at 1-855-484-2636, Option 4.

We're here to help every step of the way!

Michigan Unemployment Insurance Agency