MBT - ELF: Best practices for e-file attachments

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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 state of Michigan accepts PDF attachments with MBT e-filed returns. Due to state requirements, attachments to the MBT e-file must meet very specific naming conventions. As a result, UltraTax/MBT uses the following conventions:

For more detailed information regarding the naming convention of e-file attachments, refer to the Michigan Tax Preparer Handbook for Alternative Filing Programs available from the Michigan Treasury Department’s website.

Internal notes


Support: The following forms will be automatically attached to UBG efiles: The 4700, 4746, any affilate forms (beginning ith "u"), and the 4581 (it's non-calculating, and must have data)

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