Comptroller of Maryland. Serving the People. Peter Franchot, Comptroller
Maryland Taxes
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Contact Information for Vendors and Developers

Email Security Warning!

When sending an email to the Comptroller of Maryland, do not include information such as your full social security number (use only the last 4 digits), bank account numbers, routing numbers, or any other sensitive information.

If you wish to send sensitive information, email a description of the issue (without the sensitive data), and let us know you have confidential information to send. We will reply back via an encrypted email account, which will have "#secure#" in the email subject. In reply to the secured email, you may then provide the additional detail, including the sensitive information.

Submitting Software Vendor Contact Forms

Prior to submitting paper forms for approval please complete the Comptroller of Maryland Substitute Paper Vendor Contact Information Form and return it to us at: or fax it to 410-260-7157.

eFile Program and Record Specifications

Contact the eFile Help Desk at 410-260-7753 or by email at

W-2/1099 Electronic & Magnetic Media Specifications

Contact the Magnetic Media Unit at 410-260-7150

For additional information concerning W-2/1099 electronic and magnetic media see the section on magnetic media specifications.

Paper Forms, Barcodes & Substitute Forms

Contact the Forms Manager at 410-260-7605 or email

Links for Vendors and Developers
Tax Forms and Instructions
Vendors and Developers
  E-file for Providers
  Substitute Paper Forms
  Approved Vendors
  Contacts for Vendors and Developers
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