How do I send magnetic media to the State of Michigan?

Magnetic media requirements for tax years 2017 and beyond have been updated to allow for the upload of wage statements through Michigan Treasury Online (MTO).  Employers with 250 or more Michigan employees must submit wage statements electronically using Michigan Treasury Online (MTO).  For more information visit https://www.michigan.gov/taxes/0,4676,7-238-43519_67656_74956---,00.html.   Magnetic media may also be mailed.  For more information and requirements see Transmittal for Magnetic Media Reporting of W-2, W-2G & 1099s (Form 447)