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.
Corporate Tax Base 18. The CIT tax base requires an addition for taxes measured on net income, to the extent deducted federally.
The Texas Gross Margins Tax is not a required addition to the CIT tax base.