If you claimed a tax refund and the Department of Treasury (Department) determines that you are not entitled to all or part of this refund, the Department will adjust or deny your claim for refund. If you have been notified that the Department either adjusted or denied the amount of your refund, you have the right to have the matter reviewed through the informal conference process. Taxpayers have 60 days from the date of the notice of denial or adjustment of their refund to request an informal conference.

The Revenue Act, MCL 205.1 et seq, 1941 PA 122 provides the procedures for administration, audit, assessment, appeal and collection of tax liability for all taxes administered under the Revenue Act. Some of the taxes administered under the Revenue Act are sales tax, use tax, Single Business tax, income tax, motor fuel tax and tobacco products tax.