Michigan Business Tax
E6. I have a Michigan-issued TR Number. Am I eligible for e-file?
No. MBT Fed/State e-file is only available to those taxpayers using a Federal Employer Identification Number (FEIN). Information and forms to apply for a FEIN may be obtained at www.irs.gov/businesses/index.html or call the IRS at 1-800-929-4933 and register over the phone.