Table of Contents

1099 E-Filing: Maryland

Nina Tchistiakova Updated by Nina Tchistiakova

Due date

January 31

E-filing threshold

Must E-file if 25 or more

Filing options


Forms to file

State requires W2G, 1099-R, 1099-S regardless of state tax. 1099-MISC and 1099-NEC if state tax withheld

Transmittal form

Form MW508, located in CFS Payroll System under “W-2/1099 Information Returns”.

Required file name


E-filing website

State does not support 1099 electronic filing

Submitting files

The MW508 must be transmitted with the 1099 file.

What if I file both paper returns and magnetic media?All paper 1099s not included on media must be submitted together in one package with the media. Also, include Form MW508 showing the totals of only paper 1099Rs and payment of balance due, if applicable. Do not duplicate information between media and paper. Please be sure your name, Federal Employer Identification Number, and Maryland Central Registration number are on all documents.

Corrections must be submitted on a paper form.

Send media to:

Revenue Administration Division

Attn: Magnetic Media Unit, Room 214

110 Carroll Street

Annapolis, MD 21411-0001

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