⚠ Important Notice: Michigan State Tax Refund Delays. Many Michigan taxpayers are experiencing delays in receiving their state tax refunds this season. We want to reassure you — this is not your fault, and nothing is wrong with your return. If your status shows "Under Review" or "Pending Review," this simply means the State of Michigan has not yet released your refund. It does not mean there is an error, an audit, or any problem with how your return was filed. It is purely a processing delay on the state's end. E-filed returns can take 4–6 weeks from your acceptance confirmation, and paper returns 6–8 weeks from the mailing date. Once processed, allow an additional 5–7 business days for the refund to be issued. You can check your status at any time or call the Treasury at 517-636-4486, Mon–Fri, 8 a.m. – 4:30 p.m.