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.
Unitary Business Groups (UBGs)
Unitary Business Groups
For all Corporate Income Tax (CIT) purposes, all members of a Unitary Business Group (UBG) are defined as a single taxpayer, and for Research and Development (R&D) Tax Credit purposes, cannot file or claim the credit as separate entities.
Eligible CIT UBGs must base their credit calculations on the group’s combined values.