MBT - ELF: Form MI-8879-MBT should not be attached

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MFA required for electronic filing

Effective May 3rd, the 2017 version of UltraTax CS requires multi-factor authentication (MFA) to transmit e-files from CS Connect. Find out more.

The Michigan Treasury Department has indicated that the form MI-8879-MBT, MICHIGAN BUSINESS TAX E-FILE AUTHORIZATION, should be retained by the tax preparer in his or her records as part of the taxpayer's printed return. Form MI-8879-MBT should not be attached to the return.

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