The Michigan Department of Treasury has been made aware that some "Reminder of Tax Due" letters sent to taxpayers contain an incorrect toll-free (1-800) TTY number, which may connect callers to a potential scam. Taxpayers with questions regarding unpaid individual income taxes are asked to contact the Treasury directly at 517-636-4486. We apologize for any confusion or concern this may have caused.
Contact Treasury for Help with Business Taxes
City of Detroit Business Taxes
By Email
To ask a question or send documentation to City Taxes, email Treas-CityBusinessTax@michigan.gov.
By Phone
Talk to a Customer Service Representative at 517-636-5829.
Hours: 8:00am - 4:00pm (Monday - Friday)