Michigan EIN Number: Treasury Taxes, MiUI and Detroit

Last updated November 1, 2026 · Written by the EIN Registration filing team

There is no Michigan EIN. The IRS issues it on Form SS-4. What Michigan adds comes after it: income tax withholding with the Michigan Department of Treasury, keyed to the EIN itself, an unemployment insurance account with the Michigan Unemployment Insurance Agency, and a sales tax license from the Michigan Department of Treasury if you sell taxable goods or services.

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LLC →Corporation →Sole Proprietor →Partnership →Trust →Estate →

After your EIN in Michigan

Account	Agency	Number you get	Register
State income tax withholding	Michigan Department of Treasury	Your federal EIN (Treasury business account number)	Michigan Treasury Online
Unemployment insurance	Michigan Unemployment Insurance Agency	Employer Account Number (EAN)	MiUI
Sales tax	Michigan Department of Treasury	Sales tax license	Michigan Treasury Online

Michigan's online e-Registration runs on the Unemployment Insurance Agency's platform. Treasury's e-Registration for Michigan Taxes link leads to UIA, and UIA's employer page tells employers to register for most Michigan business taxes and a sales tax license through that online application, which requires the FEIN. The paper alternative for Treasury taxes is Form 518.

Detroit's city income tax withholding is administered by Michigan Treasury. A business already registered for State of Michigan taxes needs no separate registration for City of Detroit withholding and files those returns under its Federal Employer Identification Number.

Michigan Treasury's business registration requires the Social Security number of at least one officer or owner, or of at least two partners, to verify the principal parties. Foreign owners who have no SSN can enter an ITIN instead.

Also on the Michigan list

Register with the Michigan Department of Treasury through Michigan Treasury Online for sales, use and withholding. The EIN is required to register.
File your annual statement with LARA by the middle of February each year after formation.

Agency sites checked November 1, 2026 · All 50 states

What is different about Michigan

Michigan does not run business filings through its Secretary of State. They sit with the Department of Licensing and Regulatory Affairs, which is why searches for a Michigan Secretary of State business lookup lead to the wrong agency and why the paperwork arrives under a name owners do not recognise.
Michigan sets one fixed annual statement date in February for every LLC rather than an anniversary date, so a company formed in December files its first statement within weeks of forming.
LARA issues a customer ID number for the entity, which is the number Michigan uses to index the company. It is not a tax ID and Treasury will still ask for the federal EIN separately.

Before you apply

The SS-4 must match the Michigan Department of Licensing and Regulatory Affairs (LARA), Corporations Division filing; its customer ID number is a state index, not a tax ID.

Michigan EIN questions

How do I get an EIN number in Michigan?

File IRS Form SS-4 after the Michigan Department of Licensing and Regulatory Affairs (LARA), Corporations Division approves any formation filing; there is no Michigan EIN application. Michigan's online e-Registration runs on the Unemployment Insurance Agency's platform. Treasury's e-Registration for Michigan Taxes link leads to UIA, and UIA's employer page tells employers to register for most Michigan business taxes and a sales tax license through that online application, which requires the FEIN. The paper alternative for Treasury taxes is Form 518.

Does Michigan give employers a separate withholding number?

No. The Michigan Department of Treasury identifies withholding accounts by the federal EIN (the Treasury business account number), so the account you open in Michigan Treasury Online is keyed to the nine digits the IRS issued. That makes the EIN the thing to have before the first Michigan payroll.

Where do I register for Michigan unemployment insurance?

With the Michigan Unemployment Insurance Agency, online through MiUI. It assigns an Employer Account Number (EAN), a separate number from the EIN.

Do I need a Michigan sales tax license?

Only if you sell what Michigan taxes. The Michigan Department of Treasury issues it through Michigan Treasury Online, and your returns are filed under its number, not the EIN.

Is there a Michigan EIN or Michigan tax ID number?

No separate one. Michigan Treasury uses your federal EIN as the account number for sales, use and withholding tax; only a business without an EIN gets a Treasury-assigned TR number instead. LARA gives the LLC its own identification number on the formation filing, and the Unemployment Insurance Agency assigns a separate employer account number. None of them replaces the EIN.

Why can't I find my LLC with the Michigan Secretary of State?

Because Michigan does not file businesses there. LLCs, corporations and partnerships are filed with the Department of Licensing and Regulatory Affairs (LARA), Corporations Division, and its business entity search is where your company appears. The Secretary of State in Michigan handles vehicles and elections, which is why searches for a Secretary of State business lookup go nowhere.

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Sources

You can also apply for an EIN directly with the IRS at irs.gov at no cost.