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10481: MI - Stand-Alone Shared Secrets


What are the Michigan stand-alone "shared secrets"?

"Shared secrets" are taxpayer data used to authorize e-filing for a MI stand-alone e-filing. "Shared secrets" consist of the Social Security number, previous year's adjusted gross income (AGI) or household income (HHI), and the previous year's tax due or refund amount, for both primary and secondary taxpayers. The social security number will flow from the federal return, but the other data must be keyed on the MI EF1. "Shared secrets" are effectively a stand-alone substitute for the federal PIN.

MI stand-alone returns that are filed by a preparer with or without a Michigan income tax return (MI-1040) may be authorized for e-filing

  • using the taxpayer's "shared secrets",


  • using the MI-8453. If "shared secrets" are not keyed on the MI EF1 screen, this will produce automatically.  The MI-8453 should be retained and not mailed in. Michigan Treasury recommends that the preparer retain it for six years.

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