Table of Contents

1099 E-Filing: Maryland

Nina Tchistiakova Updated by Nina Tchistiakova

Due date

January 31

If the due date falls on a Saturday, Sunday or legal holiday, it must be filed by the next business day.

E-filing threshold

25 or more

Filing options

Electronic filing

Forms to file

1099-R, 1099-S and W-2G regardless of withholding

1099-MISC and 1099-NEC when there is withholding

E-filing website

1099-S https://interactive.marylandtaxes.gov/Business/bFile/OSC/SelectApp.aspx

1099-MISC, 1099-NEC, 1099-R, and W-2G files

https://www.mdtaxconnect.gov/

Contact

Erica Corbin

410 260 7262

Email: ecorbin@marylandtaxes.gov

Transmittal form

No Transmittal Form required

Required file name

must have “.txt” at the end

E-filing website

Electronic Filing

Submitting files

Maryland accepts electronic filing for Prior Years 203 and later.
Maryland accepts electronic filing for Corrections
Maryland will NOT be processing any 1099’s from the Combined Federal/State Filing Program.

Maryland is no longer accepting CD/Diskettes.

The SFTP Filing option will continue to be available only for 1099-K and 1099-S.

It is the user’s responsibility to know their state’s rules, requirements and how to navigate their website(s). 

There is no need to file a separate MW508 as the system will automatically generate a MW508 when the 1099 electronic file is submitted.

There are three options for filing electronically W2/MW508 to Maryland Revenue Administration.

Option 1: Maryland Tax Connect User 

As a Maryland Tax Connect User with a withholding account you may upload a properly formatted .txt file (Payroll System supports by properly formatting when you create your file in Step 4 of 1099 E-filing module).

All Maryland Tax Connect User who have a withholding account, can bulk file properly formatted 1099 .txt file (prepared by Payroll System in Step 4 of 1099 E-filing module). Your file should only contain the employers of withholding accounts that the Maryland Tax Connect user has access.

If you have zero wages for the tax year, see ‘Option 3’ below

Option 2: Transmitter Bulk Filer 

Register as a Transmitter Bulk Filer at the web portal “Maryland Tax Connect” to upload a properly formatted text file (prepared by Payroll System in Step 4 of 1099 E-fling module).

If a payroll provider or a third party filing on behalf of employer(s) in which you do not have a Maryland Tax Connect User account, you will need to first register as a Transmitter user creating a new Transmitter user-id and password.

Register as a Transmitter user. The Transmitter User Registration instructions are available online at MDTaxConnect web portal under Quick Links\User Guides and Tutorials.

The Transmitter bulk filing Production and TEST instructions are available online at MDTaxConnect web portal under Quick Links\User Guides and Tutorials.

If you have zero wages for the tax year, see ‘Option 3’ below

Option 3: Key-in 1099s and MW508.

1099s/MW508 can be keyed manually via our new web portal “Maryland Tax Connect” if less than 25 1099s.

Register as a Maryland Tax Connect User.

If you already have a Maryland Tax Connect user-id to file Maryland withholding taxes (MD Form 506), then this same Maryland Tax Connect user-id can be used to login and Key in your 1099(s) and MW508 Annual Reconciliation.

If you do not have an existing Maryland Tax Connect user-id, you will need to register.

If you are responsible for keying 1099/MW508 and are not the primary “Maryland Tax Connect” user for filing the withholding taxes, it will require an additional authorization from the primary “Maryland Tax Connect” user to grant you access to their business entity withholding account info.

The Maryland Tax Connect User Registration instruction is located online at MDTaxConnect under Quick Links\User Guides and Tutorials.

When keying in 1099(s)/MW508, user(s) need only have the 1099/MW508/payroll information at their fingertips. This is ideal for companies that have less than 25 1099s to report. After submission, a confirmation number will be assigned, and your submission is complete.

The ability to report $0 wage and/or zero MD withholding will only be supported via Md Tax Connect portal Key-in application. You will be able to manually key in a zero MW508 for tax year 2025.

The ability to report $0 wage and/or zero MD withholding via Md Tax Connect portal Bulk Filing will be available for Tax Year 2026 filing in calendar year 2027.

Additional Assistance

For additional assistance, you may email: efileW21099help@marylandtaxes.gov

For more information: https://www.marylandtaxes.gov/MDTaxConnect/index.php

You may find this Maryland guide helpful, especially for navigating the Maryland Tax Connect website to upload your file: https://www.marylandtaxes.gov/mdtaxconnect/docs/W2-1099-Bulk-Upload-Guide.pdf

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