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.