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.
Calculate Credit
Determine Calculation
Unadjusted Credit
To claim the Research and Development (R&D) Tax Credit, eligible businesses must first calculate the unadjusted credit when submitting an R&D Credit Application.
Adjusted Credit
If the annual Proration Notice includes a proration percentage, eligible businesses will use this percentage to adjust the R&D Tax Credit amount they can claim.