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Online Services

GAD's Online Service Center

If you are a vendor who does business with a participating agency of the State of Maryland, you may access the GAD Online Services including:

  • One Stop Vendor Payment Inquiry
  • Federal Liability Offset Letters
  • 1099 Inquiry
To access please register or login below.

 Register to Access GAD's Online Service Center
If you are a new user please click here to register.

 Log On to GAD's Online Service Center
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System Availability - The GAD Online Service center is available 24 hours a day, 7 days a week from any home, office, or public access point. However, information may not be available during times of system maintenance.
For assistance - contact the General Accounting Division:

  • By phone Monday through Friday between 8:30 a.m. and 4:30 p.m. EST. at 410-260-7813 or
    toll-free at 410-260-7813
  • By email at gadchecks@marylandtaxes.gov



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