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  GAD Online Service Center

If you are a vendor who does business with the state of Maryland, you may access these online services when you become a registered user. If you are a new user please submit your registration information or Log On or change your password.

One Stop Vendor Payment Inquiry
Retrieve detailed information from participating agencies concerning paid and unpaid invoices.

Federal Liability Offset Letters
Letter sent to the taxpayer containing applicable information concerning their federal liability and the state's payment that was offset for the liability.

1099 Inquiry
View payment details for 1099s issued by the State of Maryland.


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 888-784-0144
  • By email at GAD@marylandtaxes.gov




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