Information on how to file business and fiduciary income taxes with the city of Detroit. Learn how to pay your income taxes.Yes, Detroit taxes are efiled. No need to mail them in. Visit the Detroit city tax office in person. Obtain tax forms and assistance from staff. A PDFfillable copy can be found here. After filling it out, download it to your computer, then attach it here. Detroit tax clearance. Most taxpayers may request that their income tax refund be directly deposited into a U.S. financial account of their choice.