Table of Contents

W-2 E-Filing: Massachusetts

Nina Tchistiakova Updated by Nina Tchistiakova

Due date

January 31

E-filing threshold

Must E-file if 50 or more

Filing options

Electronic filing

Required file name

Any name with “.txt” at the end. 

E-filing website

https://mtc.dor.state.ma.us/mtc/_/

Submitting files

Before you process a file, if your W-2s contain combined Paid Family and Medical Leave Contributions, MAPFML, enter the information on any line in box 14 in the following format: MAPFML1234.56. For more informtaion visit: Paid Family and Medical Leave Contributions.

It is the employer’s responsibility to retain all records pertaining to withholding for at least three years after the date the return was filed or the date it was required to be filed, whichever is later. The EIN on the “RA”, Submitter, record must match the EIN of the MassTaxConnect user.

Any employer who is obligated to file 50 or more W-2 Reports including ALL payroll reporting agents and third party service providers are required to attach and upload an electronic file through Massachusetts Department of Revenues, MassTaxConnect web-based application.

Once logged in to MTC locate and click, “submit reports”/go/ financial reporting/W2/W2 file upload/ select file.

Larger transmitter with files greater than 2MB must use the Massachusetts Department of Revenue’s BULK FILE PORTAL (BFP) environment. To register for BFP: https://secft.dor.state.ma.us/bulkfile). Bulk File Portal enables larger transmitters to establish server to server connectionusing secure file transfer protocol or SFTP.

W-2 corrections may be filed on paper regardless of the number corrected.

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