Contact

To inquire with Treasury on behalf of your client regarding their individual or business tax account, use the Tax Professional eService. Specific guides and tutorials for this web service are available on the Tax Professionals eService Help Center.

Tax Professionals eService

The Tax Professionals eService is specific to the following tax types:

• corporate income tax,
• flow-through entity tax,
• individual income tax,
• marihuana retailers excise tax 
• Michigan business tax, and
• sales, use, and withholding (SUW) taxes.

Tax professionals must have a Power of Attorney (Form 151) on file permitting Treasury to disclose protected account information.

If sending account-specific questions without a POA form on file, email the executed Form 151 in PDF format to Treas_PTO@michigan.gov with the service request number of your inquiry in the subject of the email.

To ask general questions or inquire with Treasury on behalf of your business tax account, use the Business Tax eService. Specific guides and tutorials for this service are available on the Business Tax eService Help Center.

Business Tax eService

The Business Tax eService is specific to the following tax types:

• corporate income tax,
• flow-through entity tax,
• marihuana retailers excise tax
• Michigan business tax,
• SUW taxes.

If you have inquiries about bulk e-file, visit MIFastfile.org or email Forms, Documentation and E-File Services at MIFormsEfile@michigan.gov.

Call the Business Taxes Customer Contact Division at 517-636-6925 to inquire about the following tax types and topics:

• business taxes registration,
• corporate income tax,
• flow-through entity tax,
• marihuana retailers excise tax,
• Michigan business tax,
• Michigan Treasury Online (MTO), and
• SUW Taxes.